)]}' { "log": [ { "commit": "6eee052d52d555f00d6b72e35bd752942221afa1", "tree": "6d0b2e30f0363d254e04c1c54163a25d99e48a8f", "parents": [ "db610f7571f287db43c153ce26dd20dbd44d5173" ], "author": { "name": "Ethan Chen", "email": "intervigil@gmail.com", "time": "Fri Aug 01 14:47:13 2014 -0700" }, "committer": { "name": "Ethan Chen", "email": "intervigil@gmail.com", "time": "Fri Aug 01 14:54:03 2014 -0700" }, "message": "msm: perf: Fix standalone compilation\n\nInclude perf_trace_counters header file in trace directory to\navoid compile errors when compiling standalone kernel image.\n\nChange-Id: I4cb2928e37357eb6bf5f4118858f558dbe2f7f96\n" }, { "commit": "bb32d268211f1c70858a32e1402ecc09af173205", "tree": "d8f191500ea1020ed0028fadc23ece0d7c3ee973", "parents": [ "ceced05d7f2bedf5da09f4eb48075339cc23876e" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Tue Apr 09 09:33:34 2013 +0200" }, "committer": { "name": "Ethan Chen", "email": "intervigil@gmail.com", "time": "Sat Mar 29 00:49:56 2014 -0700" }, "message": "kthread: Prevent unpark race which puts threads on the wrong cpu\n\nThe smpboot threads rely on the park/unpark mechanism which binds per\ncpu threads on a particular core. Though the functionality is racy:\n\nCPU0\t \t \tCPU1 \t \t CPU2\nunpark(T)\t\t\t\t wake_up_process(T)\n clear(SHOULD_PARK)\tT runs\n\t\t\tleave parkme() due to !SHOULD_PARK\n bind_to(CPU2)\t\tBUG_ON(wrong CPU)\n\nWe cannot let the tasks move themself to the target CPU as one of\nthose tasks is actually the migration thread itself, which requires\nthat it starts running on the target cpu right away.\n\nThe solution to this problem is to prevent wakeups in park mode which\nare not from unpark(). That way we can guarantee that the association\nof the task to the target cpu is working correctly.\n\nAdd a new task state (TASK_PARKED) which prevents other wakeups and\nuse this state explicitly for the unpark wakeup.\n\nPeter noticed: Also, since the task state is visible to userspace and\nall the parked tasks are still in the PID space, its a good hint in ps\nand friends that these tasks aren\u0027t really there for the moment.\n\nThe migration thread has another related issue.\n\nCPU0\t \t \t CPU1\nBring up CPU2\ncreate_thread(T)\npark(T)\n wait_for_completion()\n\t\t\t parkme()\n\t\t\t complete()\nsched_set_stop_task()\n\t\t\t schedule(TASK_PARKED)\n\nThe sched_set_stop_task() call is issued while the task is on the\nrunqueue of CPU1 and that confuses the hell out of the stop_task class\non that cpu. So we need the same synchronizaion before\nsched_set_stop_task().\n\nReported-by: Dave Jones \u003cdavej@redhat.com\u003e\nReported-and-tested-by: Dave Hansen \u003cdave@sr71.net\u003e\nReported-and-tested-by: Borislav Petkov \u003cbp@alien8.de\u003e\nAcked-by: Peter Ziljstra \u003cpeterz@infradead.org\u003e\nCc: Srivatsa S. Bhat \u003csrivatsa.bhat@linux.vnet.ibm.com\u003e\nCc: dhillf@gmail.com\nCc: Ingo Molnar \u003cmingo@kernel.org\u003e\nCc: stable@vger.kernel.org\nLink: http://lkml.kernel.org/r/alpine.LFD.2.02.1304091635430.21884@ionos\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n\nChange-Id: If1e9993951c4ad1f6f35ad0698f6ccd05a67e81f\n" }, { "commit": "64792243b4e08d344244511bf10b193967f988be", "tree": "60ef46475b0ccb49b104e7deb7944ba22e05d467", "parents": [ "e3552d062b6b6b59803875b13e93dc4eb65ecfb0" ], "author": { "name": "Rohit Gupta", "email": "rohgup@codeaurora.org", "time": "Mon Dec 09 17:25:07 2013 -0800" }, "committer": { "name": "Ethan Chen", "email": "intervigil@gmail.com", "time": "Fri Jan 17 22:12:30 2014 -0800" }, "message": "cpufreq: interactive: Remove trace event from idle_start handler\n\nRemoved the trace_cpufreq_interactive_idle_start.\nAlso fix a crash resulting from accessing NULL policy before taking\nthe pcpu-\u003eenable_sem lock. The policy can be NULL if the core is\nhotplugged out before the enable_sem lock is taken.\n\nChange-Id: I7e2809cc016b3b383a44cdf3c697013e2d2b5417\nSigned-off-by: Rohit Gupta \u003crohgup@codeaurora.org\u003e\n" }, { "commit": "e3552d062b6b6b59803875b13e93dc4eb65ecfb0", "tree": "2b12132ee60e444277f1bd2131d3185ecf130e75", "parents": [ "0a03df2143535d9f09cd629334d7b56c01bada9f" ], "author": { "name": "Rohit Gupta", "email": "rohgup@codeaurora.org", "time": "Wed Nov 27 17:08:55 2013 -0800" }, "committer": { "name": "Ethan Chen", "email": "intervigil@gmail.com", "time": "Fri Jan 17 22:12:30 2014 -0800" }, "message": "cpufreq: interactive: Reset floor_validate_time if busy at max for 100ms\n\nWhen the interactive governor selects to run at max frequency it doesn\u0027t\nre-schedule the timer until it hits an idle. This change checks if the CPU\nhas been continuously busy for last 100ms on hitting an idle start. If yes,\nthen floor_validate_time is reset so that the CPU stays at max frequency\nfor at least another 100 ms before stepping down.\nThis is an important feature for detecting CPU intensive workloads which\nrequire high frequencies for achieving better performance.\n\nChange-Id: I7d48ffbc3d50a80af9be3bf94667ee3d0120b763\nSigned-off-by: Rohit Gupta \u003crohgup@codeaurora.org\u003e\n" }, { "commit": "eaf001971e9feaecfb88c7905666d74800e25b78", "tree": "580b0ae4877d5012e29a3536fdbda8490afcbe94", "parents": [ "2dcea87b2a1ba331711661e34c3ce0a4c54c6ca8" ], "author": { "name": "Steve Muckle", "email": "smuckle@codeaurora.org", "time": "Tue Nov 19 14:16:53 2013 -0800" }, "committer": { "name": "Ethan Chen", "email": "intervigil@gmail.com", "time": "Fri Jan 17 22:12:27 2014 -0800" }, "message": "tracing/sched: add load balancer tracepoint\n\nWhen doing performance analysis it can be useful to see exactly\nwhat is going on with the load balancer - when it runs and why\nexactly it may not be redistributing load.\n\nThis additional tracepoint will show the idle context of the\nload balance operation (idle, not idle, newly idle), various\nvalues from the load balancing operation, the final result,\nand the new balance interval.\n\nChange-Id: I9e5c97ae3878bea44e60d189ff3cec2275f2c75e\nCRs-Fixed: 583754\nSigned-off-by: Steve Muckle \u003csmuckle@codeaurora.org\u003e\n" }, { "commit": "069398a80c823aa99fa8861bb64289fa268f73fc", "tree": "3e7d7c1edce6ecd0d68220b1fb3e907e053b922d", "parents": [ "9992089db7d070adf6950517cbbf21e7e75e954e" ], "author": { "name": "Liam Mark", "email": "lmark@codeaurora.org", "time": "Wed Jan 16 10:14:40 2013 -0800" }, "committer": { "name": "Ethan Chen", "email": "intervigil@gmail.com", "time": "Fri Jan 17 22:12:21 2014 -0800" }, "message": "ion: tracing: add ftrace events for ion allocations\n\nAdd ftrace events for ion allocations to make it easier to profile\ntheir performance.\n\nChange-Id: I9f32e076cd50d7d3a145353dfcef74f0f6cdf8a0\nSigned-off-by: Liam Mark \u003clmark@codeaurora.org\u003e\n" }, { "commit": "60392bf640798e5227ef58ef17d2abcc534f6eb0", "tree": "501d0bf3bbea2ed258770b8a72b83ceb54818a8c", "parents": [ "734f1f8f6ff7f0e007b8f73b14f7129cf28e23d1" ], "author": { "name": "Rohit Gupta", "email": "rohgup@codeaurora.org", "time": "Wed Aug 14 14:27:41 2013 -0700" }, "committer": { "name": "Ethan Chen", "email": "intervigil@gmail.com", "time": "Fri Jan 17 22:12:21 2014 -0800" }, "message": "trace: power: Adding trace events for cpufreq\n\nAdded two events to help debugging cpufreq:\n1) cpufreq_sampling_event: To capture governor sampling instants\n when cpu load is evaluated and an appropriate frequency is\n selected.\n2) cpufreq_freq_synced: to capture frequency synchronization of\n destination cpu with the source cpu triggered by foreground\n thread migrations.\n\nChange-Id: I75bc7c3104b6e0750d9ede95602098d335f4f533\nSigned-off-by: Rohit Gupta \u003crohgup@codeaurora.org\u003e\n" }, { "commit": "0fad1d27a9c0ca97d4ceff8ccf3db2f2d8b52699", "tree": "f2cb4e1f5cfacdba000d991adbbe5b40c669e516", "parents": [ "c60245b334fed7c7a4c5b09fa88a5f8d7c0a2c9a" ], "author": { "name": "Rik van Riel", "email": "riel@redhat.com", "time": "Tue May 29 15:06:18 2012 -0700" }, "committer": { "name": "Ethan Chen", "email": "intervigil@gmail.com", "time": "Fri Jan 17 22:12:15 2014 -0800" }, "message": "mm: remove swap token code\n\nThe swap token code no longer fits in with the current VM model. It\ndoes not play well with cgroups or the better NUMA placement code in\ndevelopment, since we have only one swap token globally.\n\nIt also has the potential to mess with scalability of the system, by\nincreasing the number of non-reclaimable pages on the active and\ninactive anon LRU lists.\n\nLast but not least, the swap token code has been broken for a year\nwithout complaints, as reported by Konstantin Khlebnikov. This suggests\nwe no longer have much use for it.\n\nThe days of sub-1G memory systems with heavy use of swap are over. If\nwe ever need thrashing reducing code in the future, we will have to\nimplement something that does scale.\n\nChange-Id: I6d287cfc3c3206ca24da2de0c1392e5fdfcfabe8\nSigned-off-by: Rik van Riel \u003criel@redhat.com\u003e\nCc: Konstantin Khlebnikov \u003ckhlebnikov@openvz.org\u003e\nAcked-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nAcked-by: Bob Picco \u003cbpicco@meloft.net\u003e\nAcked-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\nGit-commit: e709ffd6169ccd259eb5874e853303e91e94e829\nGit-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git\nSigned-off-by: Laura Abbott \u003clauraa@codeaurora.org\u003e\n" }, { "commit": "52878acb96a36fd11d45cc0ab6735e1b6a4e8e24", "tree": "966be1da1453b6d439d5b492aee5ad69424b85e1", "parents": [ "753d7e77b2467193b5dbf926abe80cdd90d4961a" ], "author": { "name": "Mel Gorman", "email": "mgorman@suse.de", "time": "Tue May 29 15:06:20 2012 -0700" }, "committer": { "name": "Ethan Chen", "email": "intervigil@gmail.com", "time": "Fri Jan 17 22:12:14 2014 -0800" }, "message": "mm: vmscan: remove reclaim_mode_t\n\nThere is little motiviation for reclaim_mode_t once RECLAIM_MODE_[A]SYNC\nand lumpy reclaim have been removed. This patch gets rid of\nreclaim_mode_t as well and improves the documentation about what\nreclaim/compaction is and when it is triggered.\n\nChange-Id: If95bc163647b1cfb93d7f3b8435060fed1e2aabf\nSigned-off-by: Mel Gorman \u003cmgorman@suse.de\u003e\nAcked-by: Rik van Riel \u003criel@redhat.com\u003e\nAcked-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Konstantin Khlebnikov \u003ckhlebnikov@openvz.org\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nCc: Ying Han \u003cyinghan@google.com\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\nGit-commit: 23b9da55c5b0feb484bd5e8615f4eb1ce4169453\nGit-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git\nSigned-off-by: Laura Abbott \u003clauraa@codeaurora.org\u003e\n" }, { "commit": "753d7e77b2467193b5dbf926abe80cdd90d4961a", "tree": "59b7bd098f51e8c514800c49c4c0da70072c5743", "parents": [ "2c27524035cc79a31e941ddc8c24d93aae57e1ff" ], "author": { "name": "Mel Gorman", "email": "mgorman@suse.de", "time": "Tue May 29 15:06:19 2012 -0700" }, "committer": { "name": "Ethan Chen", "email": "intervigil@gmail.com", "time": "Fri Jan 17 22:12:14 2014 -0800" }, "message": "mm: vmscan: do not stall on writeback during memory compaction\n\nThis patch stops reclaim/compaction entering sync reclaim as this was\nonly intended for lumpy reclaim and an oversight. Page migration has\nits own logic for stalling on writeback pages if necessary and memory\ncompaction is already using it.\n\nWaiting on page writeback is bad for a number of reasons but the primary\none is that waiting on writeback to a slow device like USB can take a\nconsiderable length of time. Page reclaim instead uses\nwait_iff_congested() to throttle if too many dirty pages are being\nscanned.\n\nChange-Id: I14f312b1a51ee093d9d4adda5c87e57f1b83e03d\nSigned-off-by: Mel Gorman \u003cmgorman@suse.de\u003e\nAcked-by: Rik van Riel \u003criel@redhat.com\u003e\nAcked-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Konstantin Khlebnikov \u003ckhlebnikov@openvz.org\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nCc: Ying Han \u003cyinghan@google.com\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\nGit-commit: 41ac1999c3e3563e1810b14878a869c79c9368bb\nGit-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git\nSigned-off-by: Laura Abbott \u003clauraa@codeaurora.org\u003e\n" }, { "commit": "2c27524035cc79a31e941ddc8c24d93aae57e1ff", "tree": "ba9dd877223ffb018a47d857ee19c1fa9f7751b6", "parents": [ "09f85957b233256ae7f7e407c7e86a0ae55ffb7e" ], "author": { "name": "Mel Gorman", "email": "mgorman@suse.de", "time": "Tue May 29 15:06:19 2012 -0700" }, "committer": { "name": "Ethan Chen", "email": "intervigil@gmail.com", "time": "Fri Jan 17 22:12:14 2014 -0800" }, "message": "mm: vmscan: remove lumpy reclaim\n\nThis series removes lumpy reclaim and some stalling logic that was\nunintentionally being used by memory compaction. The end result is that\nstalling on dirty pages during page reclaim now depends on\nwait_iff_congested().\n\nFour kernels were compared\n\n 3.3.0 vanilla\n 3.4.0-rc2 vanilla\n 3.4.0-rc2 lumpyremove-v2 is patch one from this series\n 3.4.0-rc2 nosync-v2r3 is the full series\n\nRemoving lumpy reclaim saves almost 900 bytes of text whereas the full\nseries removes 1200 bytes.\n\n text data bss dec hex filename\n 6740375 1927944 2260992 10929311 a6c49f vmlinux-3.4.0-rc2-vanilla\n 6739479 1927944 2260992 10928415 a6c11f vmlinux-3.4.0-rc2-lumpyremove-v2\n 6739159 1927944 2260992 10928095 a6bfdf vmlinux-3.4.0-rc2-nosync-v2\n\nThere are behaviour changes in the series and so tests were run with\nmonitoring of ftrace events. This disrupts results so the performance\nresults are distorted but the new behaviour should be clearer.\n\nfs-mark running in a threaded configuration showed little of interest as\nit did not push reclaim aggressively\n\n FS-Mark Multi Threaded\n 3.3.0-vanilla rc2-vanilla lumpyremove-v2r3 nosync-v2r3\n Files/s min 3.20 ( 0.00%) 3.20 ( 0.00%) 3.20 ( 0.00%) 3.20 ( 0.00%)\n Files/s mean 3.20 ( 0.00%) 3.20 ( 0.00%) 3.20 ( 0.00%) 3.20 ( 0.00%)\n Files/s stddev 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%)\n Files/s max 3.20 ( 0.00%) 3.20 ( 0.00%) 3.20 ( 0.00%) 3.20 ( 0.00%)\n Overhead min 508667.00 ( 0.00%) 521350.00 (-2.49%) 544292.00 (-7.00%) 547168.00 (-7.57%)\n Overhead mean 551185.00 ( 0.00%) 652690.73 (-18.42%) 991208.40 (-79.83%) 570130.53 (-3.44%)\n Overhead stddev 18200.69 ( 0.00%) 331958.29 (-1723.88%) 1579579.43 (-8578.68%) 9576.81 (47.38%)\n Overhead max 576775.00 ( 0.00%) 1846634.00 (-220.17%) 6901055.00 (-1096.49%) 585675.00 (-1.54%)\n MMTests Statistics: duration\n Sys Time Running Test (seconds) 309.90 300.95 307.33 298.95\n User+Sys Time Running Test (seconds) 319.32 309.67 315.69 307.51\n Total Elapsed Time (seconds) 1187.85 1193.09 1191.98 1193.73\n\n MMTests Statistics: vmstat\n Page Ins 80532 82212 81420 79480\n Page Outs 111434984 111456240 111437376 111582628\n Swap Ins 0 0 0 0\n Swap Outs 0 0 0 0\n Direct pages scanned 44881 27889 27453 34843\n Kswapd pages scanned 25841428 25860774 25861233 25843212\n Kswapd pages reclaimed 25841393 25860741 25861199 25843179\n Direct pages reclaimed 44881 27889 27453 34843\n Kswapd efficiency 99% 99% 99% 99%\n Kswapd velocity 21754.791 21675.460 21696.029 21649.127\n Direct efficiency 100% 100% 100% 100%\n Direct velocity 37.783 23.375 23.031 29.188\n Percentage direct scans 0% 0% 0% 0%\n\nftrace showed that there was no stalling on writeback or pages submitted\nfor IO from reclaim context.\n\npostmark was similar and while it was more interesting, it also did not\npush reclaim heavily.\n\n POSTMARK\n 3.3.0-vanilla rc2-vanilla lumpyremove-v2r3 nosync-v2r3\n Transactions per second: 16.00 ( 0.00%) 20.00 (25.00%) 18.00 (12.50%) 17.00 ( 6.25%)\n Data megabytes read per second: 18.80 ( 0.00%) 24.27 (29.10%) 22.26 (18.40%) 20.54 ( 9.26%)\n Data megabytes written per second: 35.83 ( 0.00%) 46.25 (29.08%) 42.42 (18.39%) 39.14 ( 9.24%)\n Files created alone per second: 28.00 ( 0.00%) 38.00 (35.71%) 34.00 (21.43%) 30.00 ( 7.14%)\n Files create/transact per second: 8.00 ( 0.00%) 10.00 (25.00%) 9.00 (12.50%) 8.00 ( 0.00%)\n Files deleted alone per second: 556.00 ( 0.00%) 1224.00 (120.14%) 3062.00 (450.72%) 6124.00 (1001.44%)\n Files delete/transact per second: 8.00 ( 0.00%) 10.00 (25.00%) 9.00 (12.50%) 8.00 ( 0.00%)\n\n MMTests Statistics: duration\n Sys Time Running Test (seconds) 113.34 107.99 109.73 108.72\n User+Sys Time Running Test (seconds) 145.51 139.81 143.32 143.55\n Total Elapsed Time (seconds) 1159.16 899.23 980.17 1062.27\n\n MMTests Statistics: vmstat\n Page Ins 13710192 13729032 13727944 13760136\n Page Outs 43071140 42987228 42733684 42931624\n Swap Ins 0 0 0 0\n Swap Outs 0 0 0 0\n Direct pages scanned 0 0 0 0\n Kswapd pages scanned 9941613 9937443 9939085 9929154\n Kswapd pages reclaimed 9940926 9936751 9938397 9928465\n Direct pages reclaimed 0 0 0 0\n Kswapd efficiency 99% 99% 99% 99%\n Kswapd velocity 8576.567 11051.058 10140.164 9347.109\n Direct efficiency 100% 100% 100% 100%\n Direct velocity 0.000 0.000 0.000 0.000\n\nIt looks like here that the full series regresses performance but as\nftrace showed no usage of wait_iff_congested() or sync reclaim I am\nassuming it\u0027s a disruption due to monitoring. Other data such as memory\nusage, page IO, swap IO all looked similar.\n\nRunning a benchmark with a plain DD showed nothing very interesting.\nThe full series stalled in wait_iff_congested() slightly less but stall\ntimes on vanilla kernels were marginal.\n\nRunning a benchmark that hammered on file-backed mappings showed stalls\ndue to congestion but not in sync writebacks\n\n MICRO\n 3.3.0-vanilla rc2-vanilla lumpyremove-v2r3 nosync-v2r3\n MMTests Statistics: duration\n Sys Time Running Test (seconds) 308.13 294.50 298.75 299.53\n User+Sys Time Running Test (seconds) 330.45 316.28 318.93 320.79\n Total Elapsed Time (seconds) 1814.90 1833.88 1821.14 1832.91\n\n MMTests Statistics: vmstat\n Page Ins 108712 120708 97224 110344\n Page Outs 155514576 156017404 155813676 156193256\n Swap Ins 0 0 0 0\n Swap Outs 0 0 0 0\n Direct pages scanned 2599253 1550480 2512822 2414760\n Kswapd pages scanned 69742364 71150694 68839041 69692533\n Kswapd pages reclaimed 34824488 34773341 34796602 34799396\n Direct pages reclaimed 53693 94750 61792 75205\n Kswapd efficiency 49% 48% 50% 49%\n Kswapd velocity 38427.662 38797.901 37799.972 38022.889\n Direct efficiency 2% 6% 2% 3%\n Direct velocity 1432.174 845.464 1379.807 1317.446\n Percentage direct scans 3% 2% 3% 3%\n Page writes by reclaim 0 0 0 0\n Page writes file 0 0 0 0\n Page writes anon 0 0 0 0\n Page reclaim immediate 0 0 0 1218\n Page rescued immediate 0 0 0 0\n Slabs scanned 15360 16384 13312 16384\n Direct inode steals 0 0 0 0\n Kswapd inode steals 4340 4327 1630 4323\n\n FTrace Reclaim Statistics: congestion_wait\n Direct number congest waited 0 0 0 0\n Direct time congest waited 0ms 0ms 0ms 0ms\n Direct full congest waited 0 0 0 0\n Direct number conditional waited 900 870 754 789\n Direct time conditional waited 0ms 0ms 0ms 20ms\n Direct full conditional waited 0 0 0 0\n KSwapd number congest waited 2106 2308 2116 1915\n KSwapd time congest waited 139924ms 157832ms 125652ms 132516ms\n KSwapd full congest waited 1346 1530 1202 1278\n KSwapd number conditional waited 12922 16320 10943 14670\n KSwapd time conditional waited 0ms 0ms 0ms 0ms\n KSwapd full conditional waited 0 0 0 0\n\nReclaim statistics are not radically changed. The stall times in kswapd\nare massive but it is clear that it is due to calls to congestion_wait()\nand that is almost certainly the call in balance_pgdat(). Otherwise\nstalls due to dirty pages are non-existant.\n\nI ran a benchmark that stressed high-order allocation. This is very\nartifical load but was used in the past to evaluate lumpy reclaim and\ncompaction. Generally I look at allocation success rates and latency\nfigures.\n\n STRESS-HIGHALLOC\n 3.3.0-vanilla rc2-vanilla lumpyremove-v2r3 nosync-v2r3\n Pass 1 81.00 ( 0.00%) 28.00 (-53.00%) 24.00 (-57.00%) 28.00 (-53.00%)\n Pass 2 82.00 ( 0.00%) 39.00 (-43.00%) 38.00 (-44.00%) 43.00 (-39.00%)\n while Rested 88.00 ( 0.00%) 87.00 (-1.00%) 88.00 ( 0.00%) 88.00 ( 0.00%)\n\n MMTests Statistics: duration\n Sys Time Running Test (seconds) 740.93 681.42 685.14 684.87\n User+Sys Time Running Test (seconds) 2922.65 3269.52 3281.35 3279.44\n Total Elapsed Time (seconds) 1161.73 1152.49 1159.55 1161.44\n\n MMTests Statistics: vmstat\n Page Ins 4486020 2807256 2855944 2876244\n Page Outs 7261600 7973688 7975320 7986120\n Swap Ins 31694 0 0 0\n Swap Outs 98179 0 0 0\n Direct pages scanned 53494 57731 34406 113015\n Kswapd pages scanned 6271173 1287481 1278174 1219095\n Kswapd pages reclaimed 2029240 1281025 1260708 1201583\n Direct pages reclaimed 1468 14564 16649 92456\n Kswapd efficiency 32% 99% 98% 98%\n Kswapd velocity 5398.133 1117.130 1102.302 1049.641\n Direct efficiency 2% 25% 48% 81%\n Direct velocity 46.047 50.092 29.672 97.306\n Percentage direct scans 0% 4% 2% 8%\n Page writes by reclaim 1616049 0 0 0\n Page writes file 1517870 0 0 0\n Page writes anon 98179 0 0 0\n Page reclaim immediate 103778 27339 9796 17831\n Page rescued immediate 0 0 0 0\n Slabs scanned 1096704 986112 980992 998400\n Direct inode steals 223 215040 216736 247881\n Kswapd inode steals 175331 61548 68444 63066\n Kswapd skipped wait 21991 0 1 0\n THP fault alloc 1 135 125 134\n THP collapse alloc 393 311 228 236\n THP splits 25 13 7 8\n THP fault fallback 0 0 0 0\n THP collapse fail 3 5 7 7\n Compaction stalls 865 1270 1422 1518\n Compaction success 370 401 353 383\n Compaction failures 495 869 1069 1135\n Compaction pages moved 870155 3828868 4036106 4423626\n Compaction move failure 26429 23865 29742 27514\n\nSuccess rates are completely hosed for 3.4-rc2 which is almost certainly\ndue to commit fe2c2a106663 (\"vmscan: reclaim at order 0 when compaction\nis enabled\"). I expected this would happen for kswapd and impair\nallocation success rates (https://lkml.org/lkml/2012/1/25/166) but I did\nnot anticipate this much a difference: 80% less scanning, 37% less\nreclaim by kswapd\n\nIn comparison, reclaim/compaction is not aggressive and gives up easily\nwhich is the intended behaviour. hugetlbfs uses __GFP_REPEAT and would\nbe much more aggressive about reclaim/compaction than THP allocations\nare. The stress test above is allocating like neither THP or hugetlbfs\nbut is much closer to THP.\n\nMainline is now impaired in terms of high order allocation under heavy\nload although I do not know to what degree as I did not test with\n__GFP_REPEAT. Keep this in mind for bugs related to hugepage pool\nresizing, THP allocation and high order atomic allocation failures from\nnetwork devices.\n\nIn terms of congestion throttling, I see the following for this test\n\n FTrace Reclaim Statistics: congestion_wait\n Direct number congest waited 3 0 0 0\n Direct time congest waited 0ms 0ms 0ms 0ms\n Direct full congest waited 0 0 0 0\n Direct number conditional waited 957 512 1081 1075\n Direct time conditional waited 0ms 0ms 0ms 0ms\n Direct full conditional waited 0 0 0 0\n KSwapd number congest waited 36 4 3 5\n KSwapd time congest waited 3148ms 400ms 300ms 500ms\n KSwapd full congest waited 30 4 3 5\n KSwapd number conditional waited 88514 197 332 542\n KSwapd time conditional waited 4980ms 0ms 0ms 0ms\n KSwapd full conditional waited 49 0 0 0\n\nThe \"conditional waited\" times are the most interesting as this is\ndirectly impacted by the number of dirty pages encountered during scan.\nAs lumpy reclaim is no longer scanning contiguous ranges, it is finding\nfewer dirty pages. This brings wait times from about 5 seconds to 0.\nkswapd itself is still calling congestion_wait() so it\u0027ll still stall but\nit\u0027s a lot less.\n\nIn terms of the type of IO we were doing, I see this\n\n FTrace Reclaim Statistics: mm_vmscan_writepage\n Direct writes anon sync 0 0 0 0\n Direct writes anon async 0 0 0 0\n Direct writes file sync 0 0 0 0\n Direct writes file async 0 0 0 0\n Direct writes mixed sync 0 0 0 0\n Direct writes mixed async 0 0 0 0\n KSwapd writes anon sync 0 0 0 0\n KSwapd writes anon async 91682 0 0 0\n KSwapd writes file sync 0 0 0 0\n KSwapd writes file async 822629 0 0 0\n KSwapd writes mixed sync 0 0 0 0\n KSwapd writes mixed async 0 0 0 0\n\nIn 3.2, kswapd was doing a bunch of async writes of pages but\nreclaim/compaction was never reaching a point where it was doing sync\nIO. This does not guarantee that reclaim/compaction was not calling\nwait_on_page_writeback() but I would consider it unlikely. It indicates\nthat merging patches 2 and 3 to stop reclaim/compaction calling\nwait_on_page_writeback() should be safe.\n\nThis patch:\n\nLumpy reclaim had a purpose but in the mind of some, it was to kick the\nsystem so hard it trashed. For others the purpose was to complicate\nvmscan.c. Over time it was giving softer shoes and a nicer attitude but\nmemory compaction needs to step up and replace it so this patch sends\nlumpy reclaim to the farm.\n\nThe tracepoint format changes for isolating LRU pages with this patch\napplied. Furthermore reclaim/compaction can no longer queue dirty pages\nin pageout() if the underlying BDI is congested. Lumpy reclaim used\nthis logic and reclaim/compaction was using it in error.\n\nChange-Id: Ib2992962c9e99cf250a7f859bb2a67034051e4d4\nSigned-off-by: Mel Gorman \u003cmgorman@suse.de\u003e\nAcked-by: Rik van Riel \u003criel@redhat.com\u003e\nAcked-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Konstantin Khlebnikov \u003ckhlebnikov@openvz.org\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nCc: Ying Han \u003cyinghan@google.com\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\nGit-commit: c53919adc045bf803252e912f23028a68525753d\nGit-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git\nSigned-off-by: Laura Abbott \u003clauraa@codeaurora.org\u003e\n" }, { "commit": "67bed6808090539cefdc0ecd2738e12ba8bc037e", "tree": "554f4cf1f7d9ec8997ffbbf74d0a5284f98cd17c", "parents": [ "1bee7b9b43a3b5530c62523d582aef7c3f7028ca" ], "author": { "name": "Arun Bharadwaj", "email": "abharadw@codeaurora.org", "time": "Wed Jul 03 10:35:02 2013 -0700" }, "committer": { "name": "Ethan Chen", "email": "intervigil@gmail.com", "time": "Fri Jan 17 22:12:13 2014 -0800" }, "message": "tracing/sched: Add trace events to track cpu hotplug.\n\nAdd ftrace event trace_sched_cpu_hotplug to track cpu\nhot-add and hot-remove events.\n\nThis is useful in a variety of power, performance and\ndebug analysis scenarios.\n\nChange-Id: I5d202c7a229ffacc3aafb7cf9afee0b0ee7b0931\nSigned-off-by: Arun Bharadwaj \u003cabharadw@codeaurora.org\u003e\n" }, { "commit": "5865888f1a4adc6a5937a5a2c4de57b353825c9f", "tree": "06f9f0a7fd7edd04e6b7c47495740815645a203d", "parents": [ "b7b5c68565878a95eb08514f8140df16cf82882e" ], "author": { "name": "Tejun Heo", "email": "tj@kernel.org", "time": "Thu Jul 12 14:46:37 2012 -0700" }, "committer": { "name": "Ethan Chen", "email": "intervigil@gmail.com", "time": "Fri Jan 17 22:12:10 2014 -0800" }, "message": "workqueue: factor out worker_pool from global_cwq\n\nMove worklist and all worker management fields from global_cwq into\nthe new struct worker_pool. worker_pool points back to the containing\ngcwq. worker and cpu_workqueue_struct are updated to point to\nworker_pool instead of gcwq too.\n\nThis change is mechanical and doesn\u0027t introduce any functional\ndifference other than rearranging of fields and an added level of\nindirection in some places. This is to prepare for multiple pools per\ngcwq.\n\nv2: Comment typo fixes as suggested by Namhyung.\n\nChange-Id: Iefae84798c2af580f425b92ed79117935d99f21f\nSigned-off-by: Tejun Heo \u003ctj@kernel.org\u003e\nCc: Namhyung Kim \u003cnamhyung@kernel.org\u003e\nGit-commit: bd7bdd43dcb81bb08240b9401b36a104f77dc135\nGit-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git\nSigned-off-by: Matt Wagantall \u003cmattw@codeaurora.org\u003e\n" }, { "commit": "2a38ada0f1ab9f894eea4428731ebc811b51c3f3", "tree": "759c765808a23a3a35e4ba10d8306c847c0205b7", "parents": [ "19218e895cefdd389c96af12c93c89e7276bbaad", "44d19f5a04ae4e433548ba2f25e4d2ccfcac765e" ], "author": { "name": "Ethan Chen", "email": "intervigil@gmail.com", "time": "Sun Dec 08 12:50:38 2013 -0800" }, "committer": { "name": "Ethan Chen", "email": "intervigil@gmail.com", "time": "Sun Dec 08 12:50:38 2013 -0800" }, "message": "Merge tag \u0027v3.4.72\u0027 into tmp\n\nThis is the 3.4.72 stable release\n\nConflicts:\n\tarch/arm/Kconfig\n\tarch/arm/include/asm/mutex.h\n\tarch/arm/kernel/perf_event.c\n\tarch/arm/kernel/traps.c\n\tarch/arm/mm/dma-mapping.c\n\tdrivers/base/power/main.c\n\tdrivers/bluetooth/ath3k.c\n\tdrivers/bluetooth/btusb.c\n\tdrivers/gpu/drm/radeon/radeon_mode.h\n\tdrivers/mmc/card/block.c\n\tdrivers/mmc/host/sdhci.c\n\tdrivers/usb/core/message.c\n\tdrivers/usb/host/xhci-plat.c\n\tdrivers/usb/host/xhci.h\n\tdrivers/virtio/virtio_ring.c\n\tfs/ubifs/dir.c\n\tinclude/linux/freezer.h\n\tinclude/linux/virtio.h\n\tinclude/media/v4l2-ctrls.h\n\tinclude/net/bluetooth/hci_core.h\n\tinclude/net/bluetooth/mgmt.h\n\tkernel/cgroup.c\n\tkernel/futex.c\n\tkernel/signal.c\n\tnet/bluetooth/hci_conn.c\n\tnet/bluetooth/hci_core.c\n\tnet/bluetooth/hci_event.c\n\tnet/bluetooth/l2cap_core.c\n\tnet/bluetooth/mgmt.c\n\tnet/bluetooth/rfcomm/sock.c\n\tnet/bluetooth/smp.c\n\nChange-Id: I4fb0d5de74ca76f933d95d98e1a9c2c859402f34\n" }, { "commit": "4d815b62becdae153d9541b49ba323cd58459a97", "tree": "8c24b8043089de504e8c6d6af9c0f6271d112920", "parents": [ "1d78aecdc9eb045e8c6b90050911324d3d0fc51f" ], "author": { "name": "Steven Rostedt (Red Hat)", "email": "rostedt@goodmis.org", "time": "Tue Nov 26 09:22:54 2013 -0500" }, "committer": { "name": "Greg Kroah-Hartman", "email": "gregkh@linuxfoundation.org", "time": "Wed Dec 04 10:50:34 2013 -0800" }, "message": "tracing: Allow events to have NULL strings\n\ncommit 4e58e54754dc1fec21c3a9e824bc108b05fdf46e upstream.\n\nIf an TRACE_EVENT() uses __assign_str() or __get_str on a NULL pointer\nthen the following oops will happen:\n\nBUG: unable to handle kernel NULL pointer dereference at (null)\nIP: [\u003cc127a17b\u003e] strlen+0x10/0x1a\n*pde \u003d 00000000 ^M\nOops: 0000 [#1] PREEMPT SMP\nModules linked in:\nCPU: 1 PID: 0 Comm: swapper/1 Not tainted 3.13.0-rc1-test+ #2\nHardware name: /DG965MQ, BIOS MQ96510J.86A.0372.2006.0605.1717 06/05/2006^M\ntask: f5cde9f0 ti: f5e5e000 task.ti: f5e5e000\nEIP: 0060:[\u003cc127a17b\u003e] EFLAGS: 00210046 CPU: 1\nEIP is at strlen+0x10/0x1a\nEAX: 00000000 EBX: c2472da8 ECX: ffffffff EDX: c2472da8\nESI: c1c5e5fc EDI: 00000000 EBP: f5e5fe84 ESP: f5e5fe80\n DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068\nCR0: 8005003b CR2: 00000000 CR3: 01f32000 CR4: 000007d0\nStack:\n f5f18b90 f5e5feb8 c10687a8 0759004f 00000005 00000005 00000005 00200046\n 00000002 00000000 c1082a93 f56c7e28 c2472da8 c1082a93 f5e5fee4 c106bc61^M\n 00000000 c1082a93 00000000 00000000 00000001 00200046 00200082 00000000\nCall Trace:\n [\u003cc10687a8\u003e] ftrace_raw_event_lock+0x39/0xc0\n [\u003cc1082a93\u003e] ? ktime_get+0x29/0x69\n [\u003cc1082a93\u003e] ? ktime_get+0x29/0x69\n [\u003cc106bc61\u003e] lock_release+0x57/0x1a5\n [\u003cc1082a93\u003e] ? ktime_get+0x29/0x69\n [\u003cc10824dd\u003e] read_seqcount_begin.constprop.7+0x4d/0x75\n [\u003cc1082a93\u003e] ? ktime_get+0x29/0x69^M\n [\u003cc1082a93\u003e] ktime_get+0x29/0x69\n [\u003cc108a46a\u003e] __tick_nohz_idle_enter+0x1e/0x426\n [\u003cc10690e8\u003e] ? lock_release_holdtime.part.19+0x48/0x4d\n [\u003cc10bc184\u003e] ? time_hardirqs_off+0xe/0x28\n [\u003cc1068c82\u003e] ? trace_hardirqs_off_caller+0x3f/0xaf\n [\u003cc108a8cb\u003e] tick_nohz_idle_enter+0x59/0x62\n [\u003cc1079242\u003e] cpu_startup_entry+0x64/0x192\n [\u003cc102299c\u003e] start_secondary+0x277/0x27c\nCode: 90 89 c6 89 d0 88 c4 ac 38 e0 74 09 84 c0 75 f7 be 01 00 00 00 89 f0 48 5e 5d c3 55 89 e5 57 66 66 66 66 90 83 c9 ff 89 c7 31 c0 \u003cf2\u003e ae f7 d1 8d 41 ff 5f 5d c3 55 89 e5 57 66 66 66 66 90 31 ff\nEIP: [\u003cc127a17b\u003e] strlen+0x10/0x1a SS:ESP 0068:f5e5fe80\nCR2: 0000000000000000\n---[ end trace 01bc47bf519ec1b2 ]---\n\nNew tracepoints have been added that have allowed for NULL pointers\nbeing assigned to strings. To fix this, change the TRACE_EVENT() code\nto check for NULL and if it is, it will assign \"(null)\" to it instead\n(similar to what glibc printf does).\n\nReported-by: Shuah Khan \u003cshuah.kh@samsung.com\u003e\nReported-by: Jovi Zhangwei \u003cjovi.zhangwei@gmail.com\u003e\nLink: http://lkml.kernel.org/r/CAGdX0WFeEuy+DtpsJzyzn0343qEEjLX97+o1VREFkUEhndC+5Q@mail.gmail.com\nLink: http://lkml.kernel.org/r/528D6972.9010702@samsung.com\nFixes: 9cbf117662e2 (\"tracing/events: provide string with undefined size support\")\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\nSigned-off-by: Greg Kroah-Hartman \u003cgregkh@linuxfoundation.org\u003e\n\n" }, { "commit": "dde448d95d8698ee4c8373bb48fe08a22f41052f", "tree": "7fe87fa93bfa5b81e6f87b147e32512d2e8198e3", "parents": [ "ac4f6190fae02a3dc30133f90488b996f726bf7a", "f95b978981a7d154ba40d14c18e8ed5c694e6124" ], "author": { "name": "Ethan Chen", "email": "intervigil@gmail.com", "time": "Thu Jun 20 11:32:42 2013 -0700" }, "committer": { "name": "Ethan Chen", "email": "intervigil@gmail.com", "time": "Thu Jun 20 11:32:42 2013 -0700" }, "message": "Merge tag \u0027v3.4.10\u0027 into cm-10.1\n\nThis is the 3.4.10 stable release\n\nConflicts:\n\tarch/arm/mm/tlb-v7.S\n\tarch/arm/vfp/entry.S\n\tdrivers/base/power/main.c\n\tdrivers/mmc/host/sdhci.c\n\tdrivers/net/tun.c\n\tdrivers/usb/core/hub.c\n\tdrivers/usb/host/xhci.h\n\tinclude/linux/sched.h\n\tkernel/power/suspend.c\n\nChange-Id: Ia2477ec93ceb64b13dd1a2d8aa646cb233387d14\n" }, { "commit": "27f7b8e4f7c64ad67c05d48c8ba66a579325310d", "tree": "86db995c3eea9691ab6347862f0511942c020c28", "parents": [ "ae7f28c9fd4983d1cb2d5dfc1a8a288609380a8e" ], "author": { "name": "Todd Poynor", "email": "toddpoynor@google.com", "time": "Wed Nov 28 17:56:09 2012 -0800" }, "committer": { "name": "Ethan Chen", "email": "intervigil@gmail.com", "time": "Fri Jun 07 13:40:37 2013 -0700" }, "message": "cpufreq: interactive: trace actual speed in target speed decisions\n\nTracing adds actual speed since this is expected to be key to the\nchoice of target speed.\n\nChange-Id: Iec936102d0010c4e9dfa143c38a9fd0d551189c3\nSigned-off-by: Todd Poynor \u003ctoddpoynor@google.com\u003e\n" }, { "commit": "02442cfffdf244cf4de85e49284418cb3ec9d136", "tree": "03d174e9a1b54c40147291234c59ccd71fd910c1", "parents": [ "a13f415409631980f8dcf26a16a61c0c5cde12d1" ], "author": { "name": "Todd Poynor", "email": "toddpoynor@google.com", "time": "Mon Jul 16 17:07:15 2012 -0700" }, "committer": { "name": "Ethan Chen", "email": "intervigil@gmail.com", "time": "Fri Jun 07 13:40:36 2013 -0700" }, "message": "cpufreq: interactive: handle speed up and down in the realtime task\n\nNot useful to have a separate, non-realtime workqueue for speed down\nevents, avoid priority inversion for speed up events.\n\nChange-Id: Iddcd05545245c847aa1bbe0b8790092914c813d2\nSigned-off-by: Todd Poynor \u003ctoddpoynor@google.com\u003e\n" }, { "commit": "71702f9133a19decfb78791b51066027775ce245", "tree": "9c7eec9115bb839b13e181a4befb13ccf407bd1a", "parents": [ "a62469141760f07555f32087ba009f87bc63dc7b" ], "author": { "name": "Sujit Reddy Thumma", "email": "sthumma@codeaurora.org", "time": "Thu Feb 14 08:13:52 2013 +0530" }, "committer": { "name": "Sujit Reddy Thumma", "email": "sthumma@codeaurora.org", "time": "Mon Apr 29 10:24:57 2013 +0530" }, "message": "mmc: core: Log MMC clock frequency transitions\n\nUse kernel\u0027s ftrace support to capture MMC clock frequency\ntransitions which can be useful for debugging issues related\nto power consumption.\n\nUsage:\nmount -t debugfs none /sys/kernel/debug\necho 1 \u003e /sys/kernel/debug/tracing/events/mmc/mmc_clk/enable\ncat /sys/kernel/debug/tracing/trace_pipe\n\nChange-Id: I25c4ee39dcbe30e7665902a9f723a5a421b55ca3\nSigned-off-by: Sujit Reddy Thumma \u003csthumma@codeaurora.org\u003e\n" }, { "commit": "da3ee189b71515c15fa742f4f6675d7560fbe2e4", "tree": "18241487721834b418897b2f73586e1b2b1ad10e", "parents": [ "f32402f621c04cd1a8584487fb90640cad6af971" ], "author": { "name": "Pushkar Joshi", "email": "pushkarj@codeaurora.org", "time": "Fri Sep 07 14:22:58 2012 -0700" }, "committer": { "name": "Pratik Patel", "email": "pratikp@codeaurora.org", "time": "Wed Jan 30 16:09:26 2013 -0800" }, "message": "tracing: ftrace events for user faults and undefined instructions\n\nNew ftrace events (user_fault and undef_instr) for data, prefetch\nor undefined instruction aborts. The new ftrace events are under\nevents/exception.\n\nChange-Id: Iea328b71a1f623861cac9b45d858c3bbe09e1b82\nSigned-off-by: Pushkar Joshi \u003cpushkarj@codeaurora.org\u003e\n" }, { "commit": "da205c80275a7f7a90c2baab423783c55c406878", "tree": "ca82d03015baada1f76432e5fc4f4a0777ec00e4", "parents": [ "ccd37ab3230af7b32db1a139d9fe95918813bc23" ], "author": { "name": "Konrad Rzeszutek Wilk", "email": "konrad.wilk@oracle.com", "time": "Wed Oct 31 12:38:31 2012 -0400" }, "committer": { "name": "Greg Kroah-Hartman", "email": "gregkh@linuxfoundation.org", "time": "Sat Nov 17 13:15:54 2012 -0800" }, "message": "xen/mmu: Use Xen specific TLB flush instead of the generic one.\n\ncommit 95a7d76897c1e7243d4137037c66d15cbf2cce76 upstream.\n\nAs Mukesh explained it, the MMUEXT_TLB_FLUSH_ALL allows the\nhypervisor to do a TLB flush on all active vCPUs. If instead\nwe were using the generic one (which ends up being xen_flush_tlb)\nwe end up making the MMUEXT_TLB_FLUSH_LOCAL hypercall. But\nbefore we make that hypercall the kernel will IPI all of the\nvCPUs (even those that were asleep from the hypervisor\nperspective). The end result is that we needlessly wake them\nup and do a TLB flush when we can just let the hypervisor\ndo it correctly.\n\nThis patch gives around 50% speed improvement when migrating\nidle guest\u0027s from one host to another.\n\nOracle-bug: 14630170\n\nTested-by: Jingjie Jiang \u003cjingjie.jiang@oracle.com\u003e\nSuggested-by: Mukesh Rathor \u003cmukesh.rathor@oracle.com\u003e\nSigned-off-by: Konrad Rzeszutek Wilk \u003ckonrad.wilk@oracle.com\u003e\nSigned-off-by: Greg Kroah-Hartman \u003cgregkh@linuxfoundation.org\u003e\n\n" }, { "commit": "f9174f7ba336e90855768dba6a0f3caf535129e2", "tree": "1dc0966618e834aa4b89fa7eb844376fb031f4d1", "parents": [ "807ec598f2ea098ab740b5126169d550a2abe090" ], "author": { "name": "Matt Wagantall", "email": "mattw@codeaurora.org", "time": "Mon Jul 30 19:47:52 2012 -0700" }, "committer": { "name": "Sudhir Sharma", "email": "sudsha@codeaurora.org", "time": "Mon Nov 12 01:25:25 2012 -0800" }, "message": "trace: power: add cpu_frequency_switch_{start, end}\n\nIt is sometimes useful to profile how long CPU frequency switches\ntake, since they often involve variable overhead (PLL lock times,\nvoltage increase time, etc.). Add additional traces to to make this\npossible.\n\nSince the overhead involved may differ based on the frequencies\nbeing switched between, record both the start and the end frequencies\nas part of the trace.\n\nChange-Id: I2de743fc357dad3590fd4980f65f38f6073d426e\nSigned-off-by: Matt Wagantall \u003cmattw@codeaurora.org\u003e\n(cherry picked from commit 0fe22de09613ce497561f51151b2c50b6c4a1c3e)\n(cherry picked from commit 9ab0adbcac4df4d681617a8368329d2f4cad4171)\n" }, { "commit": "07cf2ff9dab0af84c1eff39bdc090604c0c7c193", "tree": "3e20260ef24582e39500d861b57dffbf294d642f", "parents": [ "8d843b3248242976e9aa17976f9ccd17aec27967" ], "author": { "name": "Abhijeet Dharmapurikar", "email": "adharmap@codeaurora.org", "time": "Thu Sep 13 19:05:13 2012 -0700" }, "committer": { "name": "Sudhir Sharma", "email": "sudsha@codeaurora.org", "time": "Wed Oct 31 01:28:09 2012 -0700" }, "message": "msm: mpdcvs: add ftrace events.\n\nAdd ftrace events at interesting points in the dcvs and mpdecision code.\n\nSigned-off-by: Abhijeet Dharmapurikar \u003cadharmap@codeaurora.org\u003e\n(cherry picked from commit f17f2d347acf17097ab5c6907bdc5a4c9e631a6d)\n\nSigned-off-by: Ram Kumar Chakravarthy Chebathini \u003crcheba@codeaurora.org\u003e\n(cherry picked from commit 950f6a4af8454ffff69b84bd3830c7091bc53c0c)\n\nChange-Id: Ic5cc00539b837090010627f364428c157137f052\nSigned-off-by: Sudhir Sharma \u003csudsha@codeaurora.org\u003e\n" }, { "commit": "8e0b3254cd4cc41d23364f36a88f9223761d9fff", "tree": "180dcb6f694294d67b213426dbf251e68ee03328", "parents": [ "bf7a56a7b36c5bf896b1a864a82ca28331689298" ], "author": { "name": "Ajay Dudani", "email": "adudani@codeaurora.org", "time": "Tue Oct 16 16:14:48 2012 -0700" }, "committer": { "name": "Android Partner Code Review", "email": "android-gerrit-partner@google.com", "time": "Wed Oct 17 17:29:27 2012 -0700" }, "message": "sync: add tracepoint support\n\nChange-Id: I181326db4247009161557e45444c9b3548b83d25\nSigned-off-by: Erik Gilling \u003ckonkers@android.com\u003e\n" }, { "commit": "c648535596087f7d17458c293d69829ff6e60a6c", "tree": "e53d6a8026ad35a0cadda0e812faa95c8ef054c4", "parents": [ "dca2dd18c62e3b90cb71534e0a715d246ce7196d" ], "author": { "name": "Wen Congyang", "email": "wency@cn.fujitsu.com", "time": "Thu Sep 20 14:04:47 2012 +0800" }, "committer": { "name": "Greg Kroah-Hartman", "email": "gregkh@linuxfoundation.org", "time": "Tue Oct 02 10:30:08 2012 -0700" }, "message": "tracing: Don\u0027t call page_to_pfn() if page is NULL\n\ncommit 85f2a2ef1d0ab99523e0b947a2b723f5650ed6aa upstream.\n\nWhen allocating memory fails, page is NULL. page_to_pfn() will\ncause the kernel panicked if we don\u0027t use sparsemem vmemmap.\n\nLink: http://lkml.kernel.org/r/505AB1FF.8020104@cn.fujitsu.com\n\nAcked-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Ingo Molnar \u003cmingo@redhat.com\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nReviewed-by: Minchan Kim \u003cminchan@kernel.org\u003e\nSigned-off-by: Wen Congyang \u003cwency@cn.fujitsu.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\nSigned-off-by: Greg Kroah-Hartman \u003cgregkh@linuxfoundation.org\u003e\n\n" }, { "commit": "38e16fc638792ddc12da853c4836602a8708e166", "tree": "1fee9674e85a885501c4905cdf017cd5d6e15089", "parents": [ "29aef9dee78ac45c5bd7f91434b05144ec220abd" ], "author": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Wed Jul 04 16:19:30 2012 -0400" }, "committer": { "name": "Greg Kroah-Hartman", "email": "gregkh@linuxfoundation.org", "time": "Wed Aug 15 08:10:28 2012 -0700" }, "message": "random: add tracepoints for easier debugging and verification\n\ncommit 00ce1db1a634746040ace24c09a4e3a7949a3145 upstream.\n\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\nSigned-off-by: Greg Kroah-Hartman \u003cgregkh@linuxfoundation.org\u003e\n\n" }, { "commit": "8e1e6b65fe92a0fa7bdb787fc7d9c5c0eae3d654", "tree": "6c33e4563cfedb58255520fe5b0142c861638a17", "parents": [ "cf7d045799f928ac338dbc9fea42538567a513e9" ], "author": { "name": "Pratik Patel", "email": "pratikp@codeaurora.org", "time": "Fri Jun 29 12:24:49 2012 -0700" }, "committer": { "name": "Pratik Patel", "email": "pratikp@codeaurora.org", "time": "Sat Aug 11 16:40:46 2012 -0700" }, "message": "coresight: enable stm logging for ftrace events and printk\n\nDup ftrace event traffic (including writes to trace_marker file from\nuserspace) to STM. Also dup printk traffic to STM. This allows Linux\ntracing and log data to be correlated with other data transported over\nSTM.\n\nChange-Id: Ieb0b856447f7667eb0005a6a884211dc46f50217\nSigned-off-by: Pratik Patel \u003cpratikp@codeaurora.org\u003e\n" }, { "commit": "a2cd6eaf5deaa40098eb6b692797519bc173381e", "tree": "394c41fd81c621ae5b1058789a19d5dfbc063a23", "parents": [ "f330512d2f143a667aeba4438b5a7b95cb82e470" ], "author": { "name": "Badhri Jagan Sridharan", "email": "badhris@codeaurora.org", "time": "Wed Jul 18 15:46:01 2012 -0700" }, "committer": { "name": "Badhri Jagan Sridharan", "email": "badhris@codeaurora.org", "time": "Thu Jul 26 18:49:05 2012 -0700" }, "message": "trace: Modify timer_start and irq_handler_entry trace events.\n\nThe timer_start event now shows whether the timer is\ndeferrable in case of a low-res timer. The debug_activate\nfunction now includes deferrable flag while calling\ntrace_timer_start event. irq_handler_entry\nevent includes the ISR function in the trace event.\n\nChange-Id: Ia2eeb4fa0fae34b301964144dad8bcef7632487c\nSigned-off-by: Badhri Jagan Sridharan \u003cbadhris@codeaurora.org\u003e\n" }, { "commit": "af120e1797e3ab6a748abee53e8f9d3cd4a30322", "tree": "49e953fb136ae1abd6c18b95fbcf75051de52c8c", "parents": [ "5a5aa70d89f53efed39945d1dd964843a3bac494" ], "author": { "name": "Todd Poynor", "email": "toddpoynor@google.com", "time": "Fri May 11 11:06:09 2012 -0700" }, "committer": { "name": "Todd Poynor", "email": "toddpoynor@google.com", "time": "Tue May 22 18:50:10 2012 -0700" }, "message": "cpufreq: interactive: fixup trace of string params\n\nChange-Id: Iac47f62437e61b13724afbbf9df1a0729f58f236\nSigned-off-by: Todd Poynor \u003ctoddpoynor@google.com\u003e\n" }, { "commit": "56afe26f4bf74f81904671ba416bac7e78c18602", "tree": "5c5f9b39c8c5a7c07c21d176172a7dda40e214cb", "parents": [ "420a95f37b73ecfdd89cd63f83d3369dbc4cb2ab" ], "author": { "name": "Colin Cross", "email": "ccross@android.com", "time": "Wed May 09 16:09:50 2012 -0700" }, "committer": { "name": "Colin Cross", "email": "ccross@android.com", "time": "Thu May 10 15:38:14 2012 -0700" }, "message": "trace: power: add trace_clock_set_parent\n\nAdds a new trace event to be called from clk_set_parent. Some\ncpufreq drivers, including Tegra, reparent the cpu clock to a\nslower clock while the main pll is relocking, tracing\nclk_set_parent allows traces to show how for long the cpu is\nrunning slower.\n\nUses a separate TRACE_EVENT instead of the clock event class to\nallow the event to contain string names for the child and the\nparent.\n\nSigned-off-by: Colin Cross \u003cccross@android.com\u003e\n" }, { "commit": "2e739a07915b74ed4bc106a228b552fa807ed24c", "tree": "14a3216f7cdf00d23b6e8985381060ada6fcec13", "parents": [ "aadf030d84352a91cdadf50f947da739c5611450" ], "author": { "name": "Todd Poynor", "email": "toddpoynor@google.com", "time": "Thu May 03 00:16:55 2012 -0700" }, "committer": { "name": "Todd Poynor", "email": "toddpoynor@google.com", "time": "Thu May 03 17:41:51 2012 -0700" }, "message": "cpufreq: interactive: add boost pulse interface\n\nChange-Id: Icf1e86d2065cc8f0816ba9c6b065eb056d4e8249\nSigned-off-by: Todd Poynor \u003ctoddpoynor@google.com\u003e\n" }, { "commit": "9fb153153b508b260d62746e18a523d43acba180", "tree": "30e5c791d59571b0c556c1e05bdb2d5a5dae2860", "parents": [ "96aa0fc5ecfad49f891ed2085d16ee785500b49a" ], "author": { "name": "Todd Poynor", "email": "toddpoynor@google.com", "time": "Mon Apr 23 20:42:41 2012 -0700" }, "committer": { "name": "Todd Poynor", "email": "toddpoynor@google.com", "time": "Thu Apr 26 17:06:14 2012 -0700" }, "message": "cpufreq: interactive: Add sysfs boost interface for hints from userspace\n\nThe explicit hint on/off version.\n\nChange-Id: Ibf62b6d45bf6fb8c9c055b9bdaf074ce9374c04f\nSigned-off-by: Todd Poynor \u003ctoddpoynor@google.com\u003e\n" }, { "commit": "7820a652885153a6f7062df100914adeccab9eef", "tree": "5f021d0bf3a3741508b7fb23eab9af90e7cf982c", "parents": [ "bc699d87bc79fd1cf1ec6f8e9616f8adeece24a0" ], "author": { "name": "Todd Poynor", "email": "toddpoynor@google.com", "time": "Mon Apr 02 17:17:14 2012 -0700" }, "committer": { "name": "Todd Poynor", "email": "toddpoynor@google.com", "time": "Thu Apr 26 17:05:01 2012 -0700" }, "message": "cpufreq: interactive: Boost frequency on touchscreen input\n\nBased on previous patches by Tero Kristo \u003ctero.kristo@nokia.com\u003e,\nBrian Steuer \u003cbsteuer@codeaurora.org\u003e,\nDavid Ng \u003cdave@codeaurora.org\u003e,\nAntti P Miettinen \u003camiettinen@nvidia.com\u003e, and\nThomas Renninger \u003ctrenn@suse.de\u003e\n\nChange-Id: Ic55fedcf6f9310f43a7022fb88e23b0392122769\nSigned-off-by: Todd Poynor \u003ctoddpoynor@google.com\u003e\n" }, { "commit": "a1e1951420229c30415b800660ca3de07f148c8d", "tree": "2051952f24887ddffe9184c6f2c75414fd9aec0d", "parents": [ "b8e586dd5954841c39be70f185bb391fd5dcb29d" ], "author": { "name": "Todd Poynor", "email": "toddpoynor@google.com", "time": "Thu Feb 16 16:27:59 2012 -0800" }, "committer": { "name": "Todd Poynor", "email": "toddpoynor@google.com", "time": "Wed Apr 18 22:49:58 2012 -0700" }, "message": "cpufreq interactive governor: event tracing\n\nChange-Id: Ic13614a3da2faa2d4bd215ca3eb7191614f0cf66\nSigned-off-by: Todd Poynor \u003ctoddpoynor@google.com\u003e\n" }, { "commit": "66cfb32772495068fbb5627b2dc88649ad66c3e5", "tree": "4ce3537afdbd9be92a7a3e6ef4e8e8519ee11543", "parents": [ "6742259866d03d5bc19815441ba928e8378343dc", "7b8e6da46b921d30ac1553cac56d8fb74f0b431d" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Apr 04 10:04:42 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Apr 04 10:04:42 2012 -0700" }, "message": "Merge branch \u0027perf-urgent-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip\n\nPull perf fixes from Ingo Molnar.\n\n* \u0027perf-urgent-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:\n perf/x86/p4: Add format attributes\n tracing, sched, vfs: Fix \u0027old_pid\u0027 usage in trace_sched_process_exec()\n" }, { "commit": "6308191f6f55d3629c7dbe72dfb856ad9fa560fd", "tree": "d3f073b0e522fc7dbee52ca6c25d92f28059f2fd", "parents": [ "8ebfdf2babcda5a3b06cc67523bca1f9aed46009" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Fri Mar 30 18:26:36 2012 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@kernel.org", "time": "Sat Mar 31 11:53:22 2012 +0200" }, "message": "tracing, sched, vfs: Fix \u0027old_pid\u0027 usage in trace_sched_process_exec()\n\n1. TRACE_EVENT(sched_process_exec) forgets to actually use the\n old pid argument, it sets -\u003eold_pid \u003d p-\u003epid.\n\n2. search_binary_handler() uses the wrong pid number. tracepoint\n needs the global pid_t from the root namespace, while old_pid\n is the virtual pid number as it seen by the tracer/parent.\n\nWith this patch we have two pid_t\u0027s in search_binary_handler(),\nnot really nice. Perhaps we should switch to \"struct pid*\", but\nin this case it would be better to cleanup the current code\nfirst and move the \"depth \u003d\u003d 0\" code outside.\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: David Smith \u003cdsmith@redhat.com\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Denys Vlasenko \u003cdvlasenk@redhat.com\u003e\nLink: http://lkml.kernel.org/r/20120330162636.GA4857@redhat.com\nSigned-off-by: Ingo Molnar \u003cmingo@kernel.org\u003e\n" }, { "commit": "9613bebb223dea3179c265dc31e1bb41ae39f321", "tree": "39bf883573d23775a53be3172323c0237fef5630", "parents": [ "40380f1c7841a5dcbf0b20f0b6da11969211ef77", "bc3f116fec194f1d7329b160c266fe16b9266a1e" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 30 12:44:29 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 30 12:44:29 2012 -0700" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs\n\nPull btrfs fixes and features from Chris Mason:\n \"We\u0027ve merged in the error handling patches from SuSE. These are\n already shipping in the sles kernel, and they give btrfs the ability\n to abort transactions and go readonly on errors. It involves a lot of\n churn as they clarify BUG_ONs, and remove the ones we now properly\n deal with.\n\n Josef reworked the way our metadata interacts with the page cache.\n page-\u003eprivate now points to the btrfs extent_buffer object, which\n makes everything faster. He changed it so we write an whole extent\n buffer at a time instead of allowing individual pages to go down,,\n which will be important for the raid5/6 code (for the 3.5 merge\n window ;)\n\n Josef also made us more aggressive about dropping pages for metadata\n blocks that were freed due to COW. Overall, our metadata caching is\n much faster now.\n\n We\u0027ve integrated my patch for metadata bigger than the page size.\n This allows metadata blocks up to 64KB in size. In practice 16K and\n 32K seem to work best. For workloads with lots of metadata, this cuts\n down the size of the extent allocation tree dramatically and fragments\n much less.\n\n Scrub was updated to support the larger block sizes, which ended up\n being a fairly large change (thanks Stefan Behrens).\n\n We also have an assortment of fixes and updates, especially to the\n balancing code (Ilya Dryomov), the back ref walker (Jan Schmidt) and\n the defragging code (Liu Bo).\"\n\nFixed up trivial conflicts in fs/btrfs/scrub.c that were just due to\nremoval of the second argument to k[un]map_atomic() in commit\n7ac687d9e047.\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: (75 commits)\n Btrfs: update the checks for mixed block groups with big metadata blocks\n Btrfs: update to the right index of defragment\n Btrfs: do not bother to defrag an extent if it is a big real extent\n Btrfs: add a check to decide if we should defrag the range\n Btrfs: fix recursive defragment with autodefrag option\n Btrfs: fix the mismatch of page-\u003emapping\n Btrfs: fix race between direct io and autodefrag\n Btrfs: fix deadlock during allocating chunks\n Btrfs: show useful info in space reservation tracepoint\n Btrfs: don\u0027t use crc items bigger than 4KB\n Btrfs: flush out and clean up any block device pages during mount\n btrfs: disallow unequal data/metadata blocksize for mixed block groups\n Btrfs: enhance superblock sanity checks\n Btrfs: change scrub to support big blocks\n Btrfs: minor cleanup in scrub\n Btrfs: introduce common define for max number of mirrors\n Btrfs: fix infinite loop in btrfs_shrink_device()\n Btrfs: fix memory leak in resolver code\n Btrfs: allow dup for data chunks in mixed mode\n Btrfs: validate target profiles only if we are going to use them\n ...\n" }, { "commit": "69e1aaddd63104f37021d0b0f6abfd9623c9134c", "tree": "14ad49741b428d270b681694bb2df349465455b9", "parents": [ "56b59b429b4c26e5e730bc8c3d837de9f7d0a966", "9d547c35799a4ddd235f1565cec2fff6c9263504" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Mar 28 10:02:55 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Mar 28 10:02:55 2012 -0700" }, "message": "Merge tag \u0027ext4_for_linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4\n\nPull ext4 updates for 3.4 from Ted Ts\u0027o:\n \"Ext4 commits for 3.3 merge window; mostly cleanups and bug fixes\n\n The changes to export dirty_writeback_interval are from Artem\u0027s s_dirt\n cleanup patch series. The same is true of the change to remove the\n s_dirt helper functions which never got used by anyone in-tree. I\u0027ve\n run these changes by Al Viro, and am carrying them so that Artem can\n more easily fix up the rest of the file systems during the next merge\n window. (Originally we had hopped to remove the use of s_dirt from\n ext4 during this merge window, but his patches had some bugs, so I\n ultimately ended dropping them from the ext4 tree.)\"\n\n* tag \u0027ext4_for_linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (66 commits)\n vfs: remove unused superblock helpers\n mm: export dirty_writeback_interval\n ext4: remove useless s_dirt assignment\n ext4: write superblock only once on unmount\n ext4: do not mark superblock as dirty unnecessarily\n ext4: correct ext4_punch_hole return codes\n ext4: remove restrictive checks for EOFBLOCKS_FL\n ext4: always set then trimmed blocks count into len\n ext4: fix trimmed block count accunting\n ext4: fix start and len arguments handling in ext4_trim_fs()\n ext4: update s_free_{inodes,blocks}_count during online resize\n ext4: change some printk() calls to use ext4_msg() instead\n ext4: avoid output message interleaving in ext4_error_\u003cfoo\u003e()\n ext4: remove trailing newlines from ext4_msg() and ext4_error() messages\n ext4: add no_printk argument validation, fix fallout\n ext4: remove redundant \"EXT4-fs: \" from uses of ext4_msg\n ext4: give more helpful error message in ext4_ext_rm_leaf()\n ext4: remove unused code from ext4_ext_map_blocks()\n ext4: rewrite punch hole to use ext4_ext_remove_space()\n jbd2: cleanup journal tail after transaction commit\n ...\n" }, { "commit": "250f6715a4112d6686670c5a62ceb9305da94616", "tree": "ee1c9b41ed1fed8174efb312421902f19c877e8c", "parents": [ "11bcb32848ddb5ab28f09f142b625e2ba4d55c4c", "313162d0b83836e2f57e51b9b8650fb4b9c396ea" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Mar 24 10:41:37 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Mar 24 10:41:37 2012 -0700" }, "message": "Merge tag \u0027device-for-3.4\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux\n\nPull \u003clinux/device.h\u003e avoidance patches from Paul Gortmaker:\n \"Nearly every subsystem has some kind of header with a proto like:\n\n\tvoid foo(struct device *dev);\n\n and yet there is no reason for most of these guys to care about the\n sub fields within the device struct. This allows us to significantly\n reduce the scope of headers including headers. For this instance, a\n reduction of about 40% is achieved by replacing the include with the\n simple fact that the device is some kind of a struct.\n\n Unlike the much larger module.h cleanup, this one is simply two\n commits. One to fix the implicit \u003clinux/device.h\u003e users, and then one\n to delete the device.h includes from the linux/include/ dir wherever\n possible.\"\n\n* tag \u0027device-for-3.4\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux:\n device.h: audit and cleanup users in main include dir\n device.h: cleanup users outside of linux/include (C files)\n" }, { "commit": "f63d395d47f37a4fe771e6d4b1db9d2cdae5ffc5", "tree": "3448a14ae965802adb963762cadeb9989ce4caa2", "parents": [ "643ac9fc5429e85b8b7f534544b80bcc4f34c367", "5a7c9eec9fde1da0e3adf0a4ddb64ff2a324a492" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 23 08:53:47 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 23 08:53:47 2012 -0700" }, "message": "Merge tag \u0027nfs-for-3.4-1\u0027 of git://git.linux-nfs.org/projects/trondmy/linux-nfs\n\nPull NFS client updates for Linux 3.4 from Trond Myklebust:\n \"New features include:\n - Add NFS client support for containers.\n\n This should enable most of the necessary functionality, including\n lockd support, and support for rpc.statd, NFSv4 idmapper and\n RPCSEC_GSS upcalls into the correct network namespace from which\n the mount system call was issued.\n\n - NFSv4 idmapper scalability improvements\n\n Base the idmapper cache on the keyring interface to allow\n concurrent access to idmapper entries. Start the process of\n migrating users from the single-threaded daemon-based approach to\n the multi-threaded request-key based approach.\n\n - NFSv4.1 implementation id.\n\n Allows the NFSv4.1 client and server to mutually identify each\n other for logging and debugging purposes.\n\n - Support the \u0027vers\u003d4.1\u0027 mount option for mounting NFSv4.1 instead of\n having to use the more counterintuitive \u0027vers\u003d4,minorversion\u003d1\u0027.\n\n - SUNRPC tracepoints.\n\n Start the process of adding tracepoints in order to improve\n debugging of the RPC layer.\n\n - pNFS object layout support for autologin.\n\n Important bugfixes include:\n\n - Fix a bug in rpc_wake_up/rpc_wake_up_status that caused them to\n fail to wake up all tasks when applied to priority waitqueues.\n\n - Ensure that we handle read delegations correctly, when we try to\n truncate a file.\n\n - A number of fixes for NFSv4 state manager loops (mostly to do with\n delegation recovery).\"\n\n* tag \u0027nfs-for-3.4-1\u0027 of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (224 commits)\n NFS: fix sb-\u003es_id in nfs debug prints\n xprtrdma: Remove assumption that each segment is \u003c\u003d PAGE_SIZE\n xprtrdma: The transport should not bug-check when a dup reply is received\n pnfs-obj: autologin: Add support for protocol autologin\n NFS: Remove nfs4_setup_sequence from generic rename code\n NFS: Remove nfs4_setup_sequence from generic unlink code\n NFS: Remove nfs4_setup_sequence from generic read code\n NFS: Remove nfs4_setup_sequence from generic write code\n NFS: Fix more NFS debug related build warnings\n SUNRPC/LOCKD: Fix build warnings when CONFIG_SUNRPC_DEBUG is undefined\n nfs: non void functions must return a value\n SUNRPC: Kill compiler warning when RPC_DEBUG is unset\n SUNRPC/NFS: Add Kbuild dependencies for NFS_DEBUG/RPC_DEBUG\n NFS: Use cond_resched_lock() to reduce latencies in the commit scans\n NFSv4: It is not safe to dereference lsp-\u003els_state in release_lockowner\n NFS: ncommit count is being double decremented\n SUNRPC: We must not use list_for_each_entry_safe() in rpc_wake_up()\n Try using machine credentials for RENEW calls\n NFSv4.1: Fix a few issues in filelayout_commit_pagelist\n NFSv4.1: Clean ups and bugfixes for the pNFS read/writeback/commit code\n ...\n" }, { "commit": "9586c959bfc917695893bef0102433a7d0675691", "tree": "c8b89e40b7a04c3150e50785e7c48b67df360c83", "parents": [ "34699403e9916060af8ae23f5e4705a6c078e79d", "addfd8a09e1f434a73b3d87d36ef050c73511d2b" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Mar 22 20:33:14 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Mar 22 20:33:14 2012 -0700" }, "message": "Merge tag \u0027regmap-3.4\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap\n\nPull regmap updates from Mark Brown:\n \"Things are really quieting down with the regmap API, while we\u0027re still\n seeing a trickle of new features coming in they\u0027re getting much\n smaller than they were. It\u0027s also nice to have some features which\n support other subsystems building infrastructure on top of regmap.\n Highlights include:\n\n - Support for padding between the register and the value when\n interacting with the device, sometimes needed for fast interfaces.\n - Support for applying register updates to the device when restoring\n the register state. This is intended to be used to apply updates\n supplied by manufacturers for tuning the performance of the device\n (many of which are to undocumented registers which aren\u0027t otherwise\n covered).\n - Support for multi-register operations on cached registers.\n - Support for syncing only part of the register cache.\n - Stubs and parameter query functions intended to make it easier for\n other subsystems to build infrastructure on top of the regmap API.\n\n plus a few driver updates making use of the new features which it was\n easier to merge via this tree.\"\n\n* tag \u0027regmap-3.4\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap: (41 commits)\n regmap: Fix future missing prototype of devres_alloc() and friends\n regmap: Rejig struct declarations for stubbed API\n regmap: Fix rbtree block base in sync\n regcache: Make sure we sync register 0 in an rbtree cache\n regmap: delete unused module.h from drivers/base/regmap files\n regmap: Add stub for regcache_sync_region()\n mfd: Improve performance of later WM1811 revisions\n regmap: Fix x86_64 breakage\n regmap: Allow drivers to sync only part of the register cache\n regmap: Supply ranges to the sync operations\n regmap: Add tracepoints for cache only and cache bypass\n regmap: Mark the cache as clean after a successful sync\n regmap: Remove default cache sync implementation\n regmap: Skip hardware defaults for LZO caches\n regmap: Expose the driver name in debugfs\n mfd: wm8400: Convert to devm_regmap_init_i2c()\n mfd: wm831x: Convert to devm_regmap_init()\n mfd: wm8994: Convert to devm_regmap_init()\n mfd/ASoC: Convert WM8994 driver to use regmap patches\n mfd: Add __devinit and __devexit annotations in wm8994\n ...\n" }, { "commit": "143bede527b054a271053f41bfaca2b57baa9408", "tree": "95c71d3705c73bf98e7a1547da35e70a44703c1e", "parents": [ "ffd7b33944f4573a063af7a55f8a5199c8185665" ], "author": { "name": "Jeff Mahoney", "email": "jeffm@suse.com", "time": "Thu Mar 01 14:56:26 2012 +0100" }, "committer": { "name": "David Sterba", "email": "dsterba@suse.cz", "time": "Thu Mar 22 01:45:34 2012 +0100" }, "message": "btrfs: return void in functions without error conditions\n\nSigned-off-by: Jeff Mahoney \u003cjeffm@suse.com\u003e\n" }, { "commit": "69a7aebcf019ab3ff5764525ad6858fbe23bb86d", "tree": "7211df5704b743a7667159748c670a9744164482", "parents": [ "d464c92b5234227c1698862a1906827e2e398ae0", "f1f996b66cc3908a8f5ffccc2ff41840e92f3b10" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Mar 20 21:12:50 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Mar 20 21:12:50 2012 -0700" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial\n\nPull trivial tree from Jiri Kosina:\n \"It\u0027s indeed trivial -- mostly documentation updates and a bunch of\n typo fixes from Masanari.\n\n There are also several linux/version.h include removals from Jesper.\"\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (101 commits)\n kcore: fix spelling in read_kcore() comment\n constify struct pci_dev * in obvious cases\n Revert \"char: Fix typo in viotape.c\"\n init: fix wording error in mm_init comment\n usb: gadget: Kconfig: fix typo for \u0027different\u0027\n Revert \"power, max8998: Include linux/module.h just once in drivers/power/max8998_charger.c\"\n writeback: fix fn name in writeback_inodes_sb_nr_if_idle() comment header\n writeback: fix typo in the writeback_control comment\n Documentation: Fix multiple typo in Documentation\n tpm_tis: fix tis_lock with respect to RCU\n Revert \"media: Fix typo in mixer_drv.c and hdmi_drv.c\"\n Doc: Update numastat.txt\n qla4xxx: Add missing spaces to error messages\n compiler.h: Fix typo\n security: struct security_operations kerneldoc fix\n Documentation: broken URL in libata.tmpl\n Documentation: broken URL in filesystems.tmpl\n mtd: simplify return logic in do_map_probe()\n mm: fix comment typo of truncate_inode_pages_range\n power: bq27x00: Fix typos in comment\n ...\n" }, { "commit": "9c2b957db1772ebf942ae7a9346b14eba6c8ca66", "tree": "0dbb83e57260ea7fc0dc421f214d5f1b26262005", "parents": [ "0bbfcaff9b2a69c71a95e6902253487ab30cb498", "bea95c152dee1791dd02cbc708afbb115bb00f9a" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Mar 20 10:29:15 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Mar 20 10:29:15 2012 -0700" }, "message": "Merge branch \u0027perf-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip\n\nPull perf events changes for v3.4 from Ingo Molnar:\n\n - New \"hardware based branch profiling\" feature both on the kernel and\n the tooling side, on CPUs that support it. (modern x86 Intel CPUs\n with the \u0027LBR\u0027 hardware feature currently.)\n\n This new feature is basically a sophisticated \u0027magnifying glass\u0027 for\n branch execution - something that is pretty difficult to extract from\n regular, function histogram centric profiles.\n\n The simplest mode is activated via \u0027perf record -b\u0027, and the result\n looks like this in perf report:\n\n\t$ perf record -b any_call,u -e cycles:u branchy\n\n\t$ perf report -b --sort\u003dsymbol\n\t 52.34% [.] main [.] f1\n\t 24.04% [.] f1 [.] f3\n\t 23.60% [.] f1 [.] f2\n\t 0.01% [k] _IO_new_file_xsputn [k] _IO_file_overflow\n\t 0.01% [k] _IO_vfprintf_internal [k] _IO_new_file_xsputn\n\t 0.01% [k] _IO_vfprintf_internal [k] strchrnul\n\t 0.01% [k] __printf [k] _IO_vfprintf_internal\n\t 0.01% [k] main [k] __printf\n\n This output shows from/to branch columns and shows the highest\n percentage (from,to) jump combinations - i.e. the most likely taken\n branches in the system. \"branches\" can also include function calls\n and any other synchronous and asynchronous transitions of the\n instruction pointer that are not \u0027next instruction\u0027 - such as system\n calls, traps, interrupts, etc.\n\n This feature comes with (hopefully intuitive) flat ascii and TUI\n support in perf report.\n\n - Various \u0027perf annotate\u0027 visual improvements for us assembly junkies.\n It will now recognize function calls in the TUI and by hitting enter\n you can follow the call (recursively) and back, amongst other\n improvements.\n\n - Multiple threads/processes recording support in perf record, perf\n stat, perf top - which is activated via a comma-list of PIDs:\n\n\tperf top -p 21483,21485\n\tperf stat -p 21483,21485 -ddd\n\tperf record -p 21483,21485\n\n - Support for per UID views, via the --uid paramter to perf top, perf\n report, etc. For example \u0027perf top --uid mingo\u0027 will only show the\n tasks that I am running, excluding other users, root, etc.\n\n - Jump label restructurings and improvements - this includes the\n factoring out of the (hopefully much clearer) include/linux/static_key.h\n generic facility:\n\n\tstruct static_key key \u003d STATIC_KEY_INIT_FALSE;\n\n\t...\n\n\tif (static_key_false(\u0026key))\n\t do unlikely code\n\telse\n\t do likely code\n\n\t...\n\tstatic_key_slow_inc();\n\t...\n\tstatic_key_slow_inc();\n\t...\n\n The static_key_false() branch will be generated into the code with as\n little impact to the likely code path as possible. the\n static_key_slow_*() APIs flip the branch via live kernel code patching.\n\n This facility can now be used more widely within the kernel to\n micro-optimize hot branches whose likelihood matches the static-key\n usage and fast/slow cost patterns.\n\n - SW function tracer improvements: perf support and filtering support.\n\n - Various hardenings of the perf.data ABI, to make older perf.data\u0027s\n smoother on newer tool versions, to make new features integrate more\n smoothly, to support cross-endian recording/analyzing workflows\n better, etc.\n\n - Restructuring of the kprobes code, the splitting out of \u0027optprobes\u0027,\n and a corner case bugfix.\n\n - Allow the tracing of kernel console output (printk).\n\n - Improvements/fixes to user-space RDPMC support, allowing user-space\n self-profiling code to extract PMU counts without performing any\n system calls, while playing nice with the kernel side.\n\n - \u0027perf bench\u0027 improvements\n\n - ... and lots of internal restructurings, cleanups and fixes that made\n these features possible. And, as usual this list is incomplete as\n there were also lots of other improvements\n\n* \u0027perf-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (120 commits)\n perf report: Fix annotate double quit issue in branch view mode\n perf report: Remove duplicate annotate choice in branch view mode\n perf/x86: Prettify pmu config literals\n perf report: Enable TUI in branch view mode\n perf report: Auto-detect branch stack sampling mode\n perf record: Add HEADER_BRANCH_STACK tag\n perf record: Provide default branch stack sampling mode option\n perf tools: Make perf able to read files from older ABIs\n perf tools: Fix ABI compatibility bug in print_event_desc()\n perf tools: Enable reading of perf.data files from different ABI rev\n perf: Add ABI reference sizes\n perf report: Add support for taken branch sampling\n perf record: Add support for sampling taken branch\n perf tools: Add code to support PERF_SAMPLE_BRANCH_STACK\n x86/kprobes: Split out optprobe related code to kprobes-opt.c\n x86/kprobes: Fix a bug which can modify kernel code permanently\n x86/kprobes: Fix instruction recovery on optimized path\n perf: Add callback to flush branch_stack on context switch\n perf: Disable PERF_SAMPLE_BRANCH_* when not supported\n perf/x86: Add LBR software filter support for Intel CPUs\n ...\n" }, { "commit": "313162d0b83836e2f57e51b9b8650fb4b9c396ea", "tree": "8f39f20515a924d392cf9a72db0918fda07a34c7", "parents": [ "51990e825431089747f8896244b5c17d3a6423f1" ], "author": { "name": "Paul Gortmaker", "email": "paul.gortmaker@windriver.com", "time": "Mon Jan 30 11:46:54 2012 -0500" }, "committer": { "name": "Paul Gortmaker", "email": "paul.gortmaker@windriver.com", "time": "Fri Mar 16 10:38:24 2012 -0400" }, "message": "device.h: audit and cleanup users in main include dir\n\nThe \u003clinux/device.h\u003e header includes a lot of stuff, and\nit in turn gets a lot of use just for the basic \"struct device\"\nwhich appears so often.\n\nClean up the users as follows:\n\n1) For those headers only needing \"struct device\" as a pointer\nin fcn args, replace the include with exactly that.\n\n2) For headers not really using anything from device.h, simply\ndelete the include altogether.\n\n3) For headers relying on getting device.h implicitly before\nbeing included themselves, now explicitly include device.h\n\n4) For files in which doing #1 or #2 uncovers an implicit\ndependency on some other header, fix by explicitly adding\nthe required header(s).\n\nAny C files that were implicitly relying on device.h to be\npresent have already been dealt with in advance.\n\nTotal removals from #1 and #2: 51. Total additions coming\nfrom #3: 9. Total other implicit dependencies from #4: 7.\n\nAs of 3.3-rc1, there were 110, so a net removal of 42 gives\nabout a 38% reduction in device.h presence in include/*\n\nSigned-off-by: Paul Gortmaker \u003cpaul.gortmaker@windriver.com\u003e\n" }, { "commit": "7d9aca39dcacd2b3f42e2e287162329f410f93e1", "tree": "2907b680b2b7625226f46d23d74ccc9c58ad0362", "parents": [ "e1c1c69c8fc7656c33460c8e085ac0d0be22ac3b", "a0cc0209abb9fe2b9ab71aa41be70eddd0cbdd61" ], "author": { "name": "Mark Brown", "email": "broonie@opensource.wolfsonmicro.com", "time": "Wed Mar 14 13:13:25 2012 +0000" }, "committer": { "name": "Mark Brown", "email": "broonie@opensource.wolfsonmicro.com", "time": "Wed Mar 14 13:13:25 2012 +0000" }, "message": "Merge remote-tracking branch \u0027regmap/topic/drivers\u0027 into regmap-next\n\nResolved simple add/add conflicts:\n\tdrivers/base/regmap/internal.h\n\tdrivers/base/regmap/regmap.c\n" }, { "commit": "79feb521a44705262d15cc819a4117a447b11ea7", "tree": "a4de6ed084b7a68c0885049d94841ce8334b64a7", "parents": [ "a78bb11d7acd525623c6a0c2ff4e213d527573fa" ], "author": { "name": "Jan Kara", "email": "jack@suse.cz", "time": "Tue Mar 13 22:22:54 2012 -0400" }, "committer": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Tue Mar 13 22:22:54 2012 -0400" }, "message": "jbd2: issue cache flush after checkpointing even with internal journal\n\nWhen we reach jbd2_cleanup_journal_tail(), there is no guarantee that\ncheckpointed buffers are on a stable storage - especially if buffers were\nwritten out by jbd2_log_do_checkpoint(), they are likely to be only in disk\u0027s\ncaches. Thus when we update journal superblock effectively removing old\ntransaction from journal, this write of superblock can get to stable storage\nbefore those checkpointed buffers which can result in filesystem corruption\nafter a crash. Thus we must unconditionally issue a cache flush before we\nupdate journal superblock in these cases.\n\nA similar problem can also occur if journal superblock is written only in\ndisk\u0027s caches, other transaction starts reusing space of the transaction\ncleaned from the log and power failure happens. Subsequent journal replay would\nstill try to replay the old transaction but some of it\u0027s blocks may be already\noverwritten by the new transaction. For this reason we must use WRITE_FUA when\nupdating log tail and we must first write new log tail to disk and update\nin-memory information only after that.\n\nSigned-off-by: Jan Kara \u003cjack@suse.cz\u003e\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n" }, { "commit": "24bcc89c7e7c64982e6192b4952a0a92379fc341", "tree": "0661b6c83fa9bb681f3aa32264323ce96c264958", "parents": [ "31d4f3a2f3c73f279ff96a7135d7202ef6833f12" ], "author": { "name": "Jan Kara", "email": "jack@suse.cz", "time": "Tue Mar 13 15:41:04 2012 -0400" }, "committer": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Tue Mar 13 15:41:04 2012 -0400" }, "message": "jbd2: split updating of journal superblock and marking journal empty\n\nThere are three case of updating journal superblock. In the first case, we want\nto mark journal as empty (setting s_sequence to 0), in the second case we want\nto update log tail, in the third case we want to update s_errno. Split these\ncases into separate functions. It makes the code slightly more straightforward\nand later patches will make the distinction even more important.\n\nSigned-off-by: Jan Kara \u003cjack@suse.cz\u003e\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n" }, { "commit": "737f24bda723fdf89ecaacb99fa2bf5683c32799", "tree": "35495fff3e9956679cb5468e74e6814c8e44ee66", "parents": [ "8eedce996556d7d06522cd3a0e6069141c8dffe0", "b7c924274c456499264d1cfa3d44063bb11eb5db" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Mar 05 09:20:08 2012 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Mar 05 09:20:08 2012 +0100" }, "message": "Merge branch \u0027perf/urgent\u0027 into perf/core\n\nConflicts:\n\ttools/perf/builtin-record.c\n\ttools/perf/builtin-top.c\n\ttools/perf/perf.h\n\ttools/perf/util/top.h\n\nMerge reason: resolve these cherry-picking conflicts.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "bdd4431c8d071491a68a65d9457996f222b5ecd3", "tree": "9de69701cdba1dd28bcb804476bff07806f6d7a3", "parents": [ "586c6e7013c8cbb8c91aaa6568ec349b1dc2c691", "1cc85961e214773cb7d7f2ccbe3bc644dd466df0" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Feb 28 10:16:01 2012 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Feb 28 10:16:10 2012 +0100" }, "message": "Merge branch \u0027rcu/next\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu\n\nThe major features of this series are:\n\n - making RCU more aggressive about entering dyntick-idle mode in order to\n improve energy efficiency\n\n - converting a few more call_rcu()s to kfree_rcu()s\n\n - applying a number of rcutree fixes and cleanups to rcutiny\n\n - removing CONFIG_SMP #ifdefs from treercu\n\n - allowing RCU CPU stall times to be set via sysfs\n\n - adding CPU-stall capability to rcutorture\n\n - adding more RCU-abuse diagnostics\n\n - updating documentation\n\n - fixing yet more issues located by the still-ongoing top-to-bottom\n inspection of RCU, this time with a special focus on the\n CPU-hotplug code path.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "5d5b7d4f80ed6e861c1c220fd57e3dad0912526e", "tree": "40c015040a63379d114b8f33b4d70e248867a9a4", "parents": [ "a3c3774176838bbfa4f6e48133644903818e56dc" ], "author": { "name": "Mark Brown", "email": "broonie@opensource.wolfsonmicro.com", "time": "Thu Feb 23 22:02:57 2012 +0000" }, "committer": { "name": "Mark Brown", "email": "broonie@opensource.wolfsonmicro.com", "time": "Thu Feb 23 22:10:56 2012 +0000" }, "message": "regmap: Add tracepoints for cache only and cache bypass\n\nUseful for figuring out where the hardware interaction went or came from.\n\nSigned-off-by: Mark Brown \u003cbroonie@opensource.wolfsonmicro.com\u003e\n" }, { "commit": "4ff16c25e2cc48cbe6956e356c38a25ac063a64d", "tree": "27ff21500ab5559497126e6a25e65bcf96d44c59", "parents": [ "034d150a44a2b428e273e69889397c01f63eaf14" ], "author": { "name": "David Smith", "email": "dsmith@redhat.com", "time": "Tue Feb 07 10:11:05 2012 -0600" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Feb 23 09:28:06 2012 +0100" }, "message": "tracepoint, vfs, sched: Add exec() tracepoint\n\nAdded a minimal exec tracepoint. Exec is an important major event\nin the life of a task, like fork(), clone() or exit(), all of\nwhich we already trace.\n\n[ We also do scheduling re-balancing during exec() - so it\u0027s useful\n from a scheduler instrumentation POV as well. ]\n\nIf you want to watch a task start up, when it gets exec\u0027ed is a good place\nto start. With the addition of this tracepoint, exec\u0027s can be monitored\nand better picture of general system activity can be obtained. This\ntracepoint will also enable better process life tracking, allowing you to\nanswer questions like \"what process keeps starting up binary X?\".\n\nThis tracepoint can also be useful in ftrace filtering and trigger\nconditions: i.e. starting or stopping filtering when exec is called.\n\nSigned-off-by: David Smith \u003cdsmith@redhat.com\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Christoph Hellwig \u003chch@infradead.org\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\nLink: http://lkml.kernel.org/r/4F314D19.7030504@redhat.com\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "8c79a045fd590a26e81e75f5d8d4ec5c7d23e565", "tree": "8123849709e37dc2394373ad40cf333b2f19ebb5", "parents": [ "719741d9986572d64b47c35c09f5e7bb8d389400" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Mon Jan 30 14:51:37 2012 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Feb 22 12:06:55 2012 +0100" }, "message": "sched/events: Revert trace_sched_stat_sleeptime()\n\nCommit 1ac9bc69 (\"sched/tracing: Add a new tracepoint for sleeptime\")\nadded a new sched:sched_stat_sleeptime tracepoint.\n\nIt\u0027s broken: the first sample we get on a task might be bad because\nof a stale sleep_start value that wasn\u0027t reset at the last task switch\nbecause the tracepoint was not active.\n\nIt also breaks the existing schedstat samples due to the side\neffects of:\n\n- se-\u003estatistics.sleep_start \u003d 0;\n...\n- se-\u003estatistics.block_start \u003d 0;\n\nNor do I see means to fix it without adding overhead to the scheduler\nfast path, which I\u0027m not willing to for the sake of redundant\ninstrumentation.\n\nMost importantly, sleep time information can already be constructed\nby tracing context switches and wakeups, and taking the timestamp\ndifference between the schedule-out, the wakeup and the schedule-in.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Andrew Vagin \u003cavagin@openvz.org\u003e\nCc: Arnaldo Carvalho de Melo \u003cacme@redhat.com\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nLink: http://lkml.kernel.org/n/tip-pc4c9qhl8q6vg3bs4j6k0rbd@git.kernel.org\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "486e259340fc4c60474f2c14703e3b3634bb58ca", "tree": "70a58702194588fa0773463523f72c682785d040", "parents": [ "0bb7b59d6e2b8440cd7097097dd4bbfc4d76ed07" ], "author": { "name": "Paul E. McKenney", "email": "paul.mckenney@linaro.org", "time": "Fri Jan 06 14:11:30 2012 -0800" }, "committer": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Tue Feb 21 09:03:25 2012 -0800" }, "message": "rcu: Avoid waking up CPUs having only kfree_rcu() callbacks\n\nWhen CONFIG_RCU_FAST_NO_HZ is enabled, RCU will allow a given CPU to\nenter dyntick-idle mode even if it still has RCU callbacks queued.\nRCU avoids system hangs in this case by scheduling a timer for several\njiffies in the future. However, if all of the callbacks on that CPU\nare from kfree_rcu(), there is no reason to wake the CPU up, as it is\nnot a problem to defer freeing of memory.\n\nThis commit therefore tracks the number of callbacks on a given CPU\nthat are from kfree_rcu(), and avoids scheduling the timer if all of\na given CPU\u0027s callbacks are from kfree_rcu().\n\nSigned-off-by: Paul E. McKenney \u003cpaul.mckenney@linaro.org\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\n" }, { "commit": "2201c590dd6e802795e21e69e3c152c519f1568e", "tree": "a617a8578dd181bbcb83c0e3c6198a3dc836eef8", "parents": [ "3d2b158262826e8b75bbbfb7b97010838dd92ac7" ], "author": { "name": "Seiji Aguchi", "email": "seiji.aguchi@hds.com", "time": "Mon Feb 20 17:53:01 2012 -0500" }, "committer": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Mon Feb 20 17:53:01 2012 -0500" }, "message": "jbd2: add drop_transaction/update_superblock_end tracepoints\n\nThis patch adds trace_jbd2_drop_transaction and\ntrace_jbd2_update_superblock_end because there are similar tracepoints\nin jbd and they are needed in jbd2 as well.\n\nReviewed-by: Lukas Czerner \u003clczerner@redhat.com\u003e\nSigned-off-by: Seiji Aguchi \u003cseiji.aguchi@hds.com\u003e\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n\n" }, { "commit": "95100358491abaa2e9a5483811370059bbca4645", "tree": "4fc32c4bf2ef4416b4a914f5426f96ba58f29ec1", "parents": [ "cdfb0d30e943f36c8a074a26c3d168a05bdbb372" ], "author": { "name": "Johannes Berg", "email": "johannes.berg@intel.com", "time": "Thu Nov 24 20:03:08 2011 +0100" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Mon Feb 13 13:46:05 2012 -0500" }, "message": "printk/tracing: Add console output tracing\n\nAdd a printk.console trace point to record any printk\nmessages into the trace, regardless of the current\nconsole loglevel. This can help correlate (existing)\nprintk debugging with other tracing.\n\nLink: http://lkml.kernel.org/r/1322161388.5366.54.camel@jlt3.sipsolutions.net\n\nAcked-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Christoph Hellwig \u003chch@infradead.org\u003e\nCc: Ingo Molnar \u003cmingo@redhat.com\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nAcked-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Johannes Berg \u003cjohannes.berg@intel.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "484546509ce5d49d43ec0a6eb2141c6bf3362bfc", "tree": "22145ca23b08aee51d17f335897e035a20a96dcc", "parents": [ "2fbb90db1b8fcc78f43830f1a009f3af243c5f42" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Tue Feb 07 09:40:30 2012 -0500" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Mon Feb 13 09:14:43 2012 -0500" }, "message": "x86/tracing: Denote the power and cpuidle tracepoints as _rcuidle()\n\nThe power and cpuidle tracepoints are called within a rcu_idle_exit()\nsection, and must be denoted with the _rcuidle() version of the tracepoint.\n\nAcked-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nReviewed-by: Josh Triplett \u003cjosh@joshtriplett.org\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "5753cba17611af108995672c4e2d978014e17a56", "tree": "5b0588c60045b155e9dc79e01490b248e19b6c2c", "parents": [ "85c0d24f026ca6935897694be4eb0b5c514b907d" ], "author": { "name": "Steve Dickson", "email": "steved@redhat.com", "time": "Mon Feb 06 10:08:08 2012 -0500" }, "committer": { "name": "Trond Myklebust", "email": "Trond.Myklebust@netapp.com", "time": "Mon Feb 06 10:37:53 2012 -0500" }, "message": "SUNRPC: Adding status trace points\n\nThis patch adds three trace points to the status routines\nin the sunrpc state machine.\n\nThe goal of these trace points is to give an Admin\nthe ability to check on binding status or connection\nstatus to see if there is a potential problem.\n\nSigned-off-by: Steve Dickson \u003csteved@redhat.com\u003e\nSigned-off-by: Trond Myklebust \u003cTrond.Myklebust@netapp.com\u003e\n" }, { "commit": "85c0d24f026ca6935897694be4eb0b5c514b907d", "tree": "1f70f139d093624630c59d1a85054a6a3cc65320", "parents": [ "a4980e7840176b4baa60715c32c5994b084ea9a6" ], "author": { "name": "Trond Myklebust", "email": "Trond.Myklebust@netapp.com", "time": "Mon Feb 06 10:31:35 2012 -0500" }, "committer": { "name": "Trond Myklebust", "email": "Trond.Myklebust@netapp.com", "time": "Mon Feb 06 10:31:35 2012 -0500" }, "message": "SUNRPC: Fix up sunrpc trace events\n\nThe reporting of the RPC queue name needs to use the __string()\nevent interface.\n\nReported-by: Neil Horman \u003cnhorman@redhat.com\u003e\nSigned-off-by: Trond Myklebust \u003cTrond.Myklebust@netapp.com\u003e\n" }, { "commit": "977b7e3a52a7421ad33a393a38ece59f3d41c2fa", "tree": "8ad7bb97c2385c3407c4fb647cc932978057559d", "parents": [ "3310225dfc71a35a2cc9340c15c0e08b14b3c754" ], "author": { "name": "Wu Fengguang", "email": "fengguang.wu@intel.com", "time": "Sat Feb 04 20:54:03 2012 -0600" }, "committer": { "name": "Wu Fengguang", "email": "fengguang.wu@intel.com", "time": "Mon Feb 06 11:17:25 2012 +0800" }, "message": "writeback: fix dereferencing NULL bdi-\u003edev on trace_writeback_queue\n\nWhen a SD card is hot removed without umount, del_gendisk() will call\nbdi_unregister() without destroying/freeing it. This leaves the bdi in\nthe bdi-\u003edev \u003d NULL, bdi-\u003ewb.task \u003d NULL, bdi-\u003ebdi_list removed state.\n\nWhen sync(2) gets the bdi before bdi_unregister() and calls\nbdi_queue_work() after the unregister, trace_writeback_queue will be\ndereferencing the NULL bdi-\u003edev. Fix it with a simple test for NULL.\n\nLKML-reference: http://lkml.org/lkml/2012/1/18/346\nCc: stable@kernel.org\nReported-by: Rabin Vincent \u003crabin@rab.in\u003e\nTested-by: Namjae Jeon \u003clinkinjeon@gmail.com\u003e\nSigned-off-by: Wu Fengguang \u003cfengguang.wu@intel.com\u003e\n" }, { "commit": "42481ba29033b3e692fe81e6536fc8f59b40ce07", "tree": "f9ee3f436e38148d2b5f32a06ba7b3fb3fc11aaa", "parents": [ "241057486646dd42278538218376c79aae2c359f" ], "author": { "name": "Jesper Juhl", "email": "jj@chaosbits.net", "time": "Sat Feb 04 23:29:19 2012 +0100" }, "committer": { "name": "Jiri Kosina", "email": "jkosina@suse.cz", "time": "Sun Feb 05 15:53:02 2012 +0100" }, "message": "Remove incorrect comment from include/trace/events/power.h\n\nThe code is not going to be removed, so remove the comment stating\nthat it will be.\n\nSigned-off-by: Jesper Juhl \u003cjj@chaosbits.net\u003e\nSigned-off-by: Jiri Kosina \u003cjkosina@suse.cz\u003e\n" }, { "commit": "972c5ae961d6e5103e2b33d935cfa4145fd47140", "tree": "350b2a76b979ba8766c09838617df67ff330eca0", "parents": [ "5196d20305d5e30d871111d3a876cf067dd94255", "7c7ed8ec337bf5f62cc5287a6eb6b2f1b7504c2f" ], "author": { "name": "Jiri Kosina", "email": "jkosina@suse.cz", "time": "Fri Feb 03 23:12:42 2012 +0100" }, "committer": { "name": "Jiri Kosina", "email": "jkosina@suse.cz", "time": "Fri Feb 03 23:13:05 2012 +0100" }, "message": "Merge branch \u0027master\u0027 into for-next\n\nSync with Linus\u0027 tree to be able to apply patch to a newer\ncode (namely drivers/gpu/drm/gma500/psb_intel_lvds.c)\n" }, { "commit": "60d3369edb03fb4799c45ac594e2b8a76aa9079c", "tree": "e02a4229fbfa914e4768feb535215c7fc25a80ee", "parents": [ "61c54d20d16f098823058b07b399ac5b716ea5ba" ], "author": { "name": "Jesper Juhl", "email": "jj@chaosbits.net", "time": "Sun Jan 15 21:48:38 2012 +0100" }, "committer": { "name": "Jiri Kosina", "email": "jkosina@suse.cz", "time": "Fri Feb 03 22:41:34 2012 +0100" }, "message": "Fix up version number reference in include/trace/events/power.h\n\nWhat was originally going to be 2.6.41 became 3.1 .\n\nSigned-off-by: Jesper Juhl \u003cjj@chaosbits.net\u003e\nSigned-off-by: Jiri Kosina \u003cjkosina@suse.cz\u003e\n" }, { "commit": "15eb77a07c714ac80201abd0a9568888bcee6276", "tree": "cc43dc8458cb431900fd47990772ffa56b36b4f4", "parents": [ "2673b4cf5d59c3ee5e0c12f6d734d38770324dc4" ], "author": { "name": "Wu Fengguang", "email": "fengguang.wu@intel.com", "time": "Tue Jan 17 11:18:56 2012 -0600" }, "committer": { "name": "Wu Fengguang", "email": "fengguang.wu@intel.com", "time": "Wed Feb 01 16:53:40 2012 +0800" }, "message": "writeback: fix NULL bdi-\u003edev in trace writeback_single_inode\n\nbdi_prune_sb() resets sb-\u003es_bdi to default_backing_dev_info when the\ntearing down the original bdi. Fix trace_writeback_single_inode to\nuse sb-\u003es_bdi\u003ddefault_backing_dev_info rather than bdi-\u003edev\u003dNULL for a\nteared down bdi.\n\nCc: \u003cstable@kernel.org\u003e\nReported-by: Rabin Vincent \u003crabin@rab.in\u003e\nTested-by: Rabin Vincent \u003crabin@rab.in\u003e\nSigned-off-by: Wu Fengguang \u003cfengguang.wu@intel.com\u003e\n" }, { "commit": "82b0a4c3c171b180629696e8d1d5f52516f711e6", "tree": "60aab7bc3a767e3c017a228597eaaeedeffe4c00", "parents": [ "a613fa168afc19179a7547fbba45644c5b6912bf" ], "author": { "name": "Trond Myklebust", "email": "Trond.Myklebust@netapp.com", "time": "Fri Jan 20 14:52:23 2012 -0500" }, "committer": { "name": "Trond Myklebust", "email": "Trond.Myklebust@netapp.com", "time": "Tue Jan 31 19:28:21 2012 -0500" }, "message": "SUNRPC: Add trace events to the sunrpc subsystem\n\nAdd declarations to allow tracing of RPC call creation, running, sleeping,\nand destruction.\n\nSigned-off-by: Trond Myklebust \u003cTrond.Myklebust@netapp.com\u003e\n" }, { "commit": "96070c83b295b31912ad92d3ffb66baec2b86d50", "tree": "9ee346398552b40df1a7c7a80cb366bfd6a07181", "parents": [ "87f71ae2dd7471c1b4c94100be1f218e91dc64c3", "163566f60bfe6a8176650155e2d98649b0dfabf8" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Jan 26 11:09:19 2012 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Jan 26 11:09:19 2012 +0100" }, "message": "Merge branch \u0027sigtrace\u0027 of git://github.com/utrace/linux into perf/core\n" }, { "commit": "f9156c7288e2d11501ded4d7fe6d9a3a41ee4057", "tree": "7bd26fc9a111c6af1601ecd2d1b0ab60da32f3f0", "parents": [ "67175b855bfd6ed95ffeff95532173c07de6432d", "96bdc7dc61fb1b1e8e858dafb13abee8482ba064" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jan 17 15:49:54 2012 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jan 17 15:49:54 2012 -0800" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: (62 commits)\n Btrfs: use larger system chunks\n Btrfs: add a delalloc mutex to inodes for delalloc reservations\n Btrfs: space leak tracepoints\n Btrfs: protect orphan block rsv with spin_lock\n Btrfs: add allocator tracepoints\n Btrfs: don\u0027t call btrfs_throttle in file write\n Btrfs: release space on error in page_mkwrite\n Btrfs: fix btrfsck error 400 when truncating a compressed\n Btrfs: do not use btrfs_end_transaction_throttle everywhere\n Btrfs: add balance progress reporting\n Btrfs: allow for resuming restriper after it was paused\n Btrfs: allow for canceling restriper\n Btrfs: allow for pausing restriper\n Btrfs: add skip_balance mount option\n Btrfs: recover balance on mount\n Btrfs: save balance parameters to disk\n Btrfs: soft profile changing mode (aka soft convert)\n Btrfs: implement online profile changing\n Btrfs: do not reduce profile in do_chunk_alloc()\n Btrfs: virtual address space subset filter\n ...\n\nFix up trivial conflict in fs/btrfs/ioctl.c due to the use of the new\nmnt_drop_write_file() helper.\n" }, { "commit": "8c2a3ca20f6233677ac3222c6506174010eb414f", "tree": "88d1105c665d355b363929557ed0c5489795e348", "parents": [ "90290e19820e3323ce6b9c2888eeb68bf29c278b" ], "author": { "name": "Josef Bacik", "email": "josef@redhat.com", "time": "Tue Jan 10 10:31:31 2012 -0500" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Mon Jan 16 15:29:43 2012 -0500" }, "message": "Btrfs: space leak tracepoints\n\nThis in addition to a script in my btrfs-tracing tree will help track down space\nleaks when we\u0027re getting space left over in block groups on umount. Thanks,\n\nSigned-off-by: Josef Bacik \u003cjosef@redhat.com\u003e\n" }, { "commit": "3f7de037fb3727b20bc27332cdcf2488b702394c", "tree": "7e355b7e60b584ca7aaaf7c8abfa1f2408c15ff2", "parents": [ "45a8090e626ab470c91142954431a93846030b0d" ], "author": { "name": "Josef Bacik", "email": "josef@redhat.com", "time": "Thu Nov 10 08:29:20 2011 -0500" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Mon Jan 16 15:29:42 2012 -0500" }, "message": "Btrfs: add allocator tracepoints\n\nI used these tracepoints when figuring out what the cluster stuff was doing, so\nadd them to mainline in case we need to profile this stuff again. Thanks,\n\nSigned-off-by: Josef Bacik \u003cjosef@redhat.com\u003e\n" }, { "commit": "6c303d3ab39f0dc69546f179c424ee1124f50906", "tree": "40fd551256229f2ac1f931c3f9e650ba67deefc7", "parents": [ "099469502f62fbe0d7e4f0b83a2f22538367f734" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Tue Nov 22 21:13:48 2011 +0100" }, "committer": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Fri Jan 13 18:48:50 2012 +0100" }, "message": "tracing: let trace_signal_generate() report more info, kill overflow_fail/lose_info\n\n__send_signal()-\u003etrace_signal_generate() doesn\u0027t report enough info.\nThe users want to know was the signal actually delivered or not, and\nthey also need the shared/private info.\n\nThe patch moves trace_signal_generate() at the end of __send_signal()\nand adds the 2 additional arguments.\n\nThis also allows us to kill trace_signal_overflow_fail/lose_info, we\ncan simply add the appropriate TRACE_SIGNAL_ \"result\" codes.\n\nReported-by: Seiji Aguchi \u003csaguchi@redhat.com\u003e\nReviewed-by: Seiji Aguchi \u003cseiji.aguchi@hds.com\u003e\nAcked-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\n" }, { "commit": "ea4d349ffa8028c655236497c2ba17c17aaa0d65", "tree": "b983961282dea73db03a1257fa4aaec109aee5cc", "parents": [ "45676885b76237a4c236d26fe20a9b0cfdb2eb22" ], "author": { "name": "Tao Ma", "email": "boyu.mt@taobao.com", "time": "Thu Jan 12 17:19:20 2012 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 12 20:13:08 2012 -0800" }, "message": "vmscan/trace: Add \u0027file\u0027 info to trace_mm_vmscan_lru_isolate()\n\nIn trace_mm_vmscan_lru_isolate(), we don\u0027t output \u0027file\u0027 information to\nthe trace event and it is a bit inconvenient for the user to get the\nreal information(like pasted below). mm_vmscan_lru_isolate:\nisolate_mode\u003d2 order\u003d0 nr_requested\u003d32 nr_scanned\u003d32 nr_taken\u003d32\ncontig_taken\u003d0 contig_dirty\u003d0 contig_failed\u003d0\n\n\u0027active\u0027 can be obtained by analyzing mode(Thanks go to Minchan and\nMel), So this patch adds \u0027file\u0027 to the trace event and it now looks\nlike: mm_vmscan_lru_isolate: isolate_mode\u003d2 order\u003d0 nr_requested\u003d32\nnr_scanned\u003d32 nr_taken\u003d32 contig_taken\u003d0 contig_dirty\u003d0 contig_failed\u003d0\nfile\u003d0\n\nSigned-off-by: Tao Ma \u003cboyu.mt@taobao.com\u003e\nAcked-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nReviewed-by: Minchan Kim \u003cminchan@kernel.org\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nCc: Johannes Weiner \u003channes@cmpxchg.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "001a541ea9163ace5e8243ee0e907ad80a4c0ec2", "tree": "a76225046369c440de93739add9823f5ea060245", "parents": [ "40ba587923ae67090d9f141c1d3c951be5c1420e", "bc31b86a5923fad5f3fbb6192f767f410241ba27" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jan 10 16:59:59 2012 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jan 10 16:59:59 2012 -0800" }, "message": "Merge branch \u0027writeback-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/linux\n\n* \u0027writeback-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/linux:\n writeback: move MIN_WRITEBACK_PAGES to fs-writeback.c\n writeback: balanced_rate cannot exceed write bandwidth\n writeback: do strict bdi dirty_exceeded\n writeback: avoid tiny dirty poll intervals\n writeback: max, min and target dirty pause time\n writeback: dirty ratelimit - think time compensation\n btrfs: fix dirtied pages accounting on sub-page writes\n writeback: fix dirtied pages accounting on redirty\n writeback: fix dirtied pages accounting on sub-page writes\n writeback: charge leaked page dirties to active tasks\n writeback: Include all dirty inodes in background writeback\n" }, { "commit": "40ba587923ae67090d9f141c1d3c951be5c1420e", "tree": "342a72fc0ee13a0d2496ef970b64dfeadf1355d2", "parents": [ "54c2c5761febcca46c8037d3a81612991e6c209a", "6b550f9495947fc279d12c38feaf98500e8d0646" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jan 10 16:42:48 2012 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jan 10 16:42:48 2012 -0800" }, "message": "Merge branch \u0027akpm\u0027 (aka \"Andrew\u0027s patch-bomb\")\n\nAndrew elucidates:\n - First installmeant of MM. We have a HUGE number of MM patches this\n time. It\u0027s crazy.\n - MAINTAINERS updates\n - backlight updates\n - leds\n - checkpatch updates\n - misc ELF stuff\n - rtc updates\n - reiserfs\n - procfs\n - some misc other bits\n\n* akpm: (124 commits)\n user namespace: make signal.c respect user namespaces\n workqueue: make alloc_workqueue() take printf fmt and args for name\n procfs: add hidepid\u003d and gid\u003d mount options\n procfs: parse mount options\n procfs: introduce the /proc/\u003cpid\u003e/map_files/ directory\n procfs: make proc_get_link to use dentry instead of inode\n signal: add block_sigmask() for adding sigmask to current-\u003eblocked\n sparc: make SA_NOMASK a synonym of SA_NODEFER\n reiserfs: don\u0027t lock root inode searching\n reiserfs: don\u0027t lock journal_init()\n reiserfs: delay reiserfs lock until journal initialization\n reiserfs: delete comments referring to the BKL\n drivers/rtc/interface.c: fix alarm rollover when day or month is out-of-range\n drivers/rtc/rtc-twl.c: add DT support for RTC inside twl4030/twl6030\n drivers/rtc/: remove redundant spi driver bus initialization\n drivers/rtc/rtc-jz4740.c: make jz4740_rtc_driver static\n drivers/rtc/rtc-mc13xxx.c: make mc13xxx_rtc_idtable static\n rtc: convert drivers/rtc/* to use module_platform_driver()\n drivers/rtc/rtc-wm831x.c: convert to devm_kzalloc()\n drivers/rtc/rtc-wm831x.c: remove unused period IRQ handler\n ...\n" }, { "commit": "43d2b113241d6797b890318767e0af78e313414b", "tree": "6f25647f2660f8fca63cc8355b70ad643993dab8", "parents": [ "6bd4837de96e7d9f9bf33e59117c24fc230862ac" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Tue Jan 10 15:08:09 2012 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jan 10 16:30:44 2012 -0800" }, "message": "tracepoint: add tracepoints for debugging oom_score_adj\n\noom_score_adj is used for guarding processes from OOM-Killer. One of\nproblem is that it\u0027s inherited at fork(). When a daemon set oom_score_adj\nand make children, it\u0027s hard to know where the value is set.\n\nThis patch adds some tracepoints useful for debugging. This patch adds\n3 trace points.\n - creating new task\n - renaming a task (exec)\n - set oom_score_adj\n\nTo debug, users need to enable some trace pointer. Maybe filtering is useful as\n\n# EVENT\u003d/sys/kernel/debug/tracing/events/task/\n# echo \"oom_score_adj !\u003d 0\" \u003e $EVENT/task_newtask/filter\n# echo \"oom_score_adj !\u003d 0\" \u003e $EVENT/task_rename/filter\n# echo 1 \u003e $EVENT/enable\n# EVENT\u003d/sys/kernel/debug/tracing/events/oom/\n# echo 1 \u003e $EVENT/enable\n\noutput will be like this.\n# grep oom /sys/kernel/debug/tracing/trace\nbash-7699 [007] d..3 5140.744510: oom_score_adj_update: pid\u003d7699 comm\u003dbash oom_score_adj\u003d-1000\nbash-7699 [007] ...1 5151.818022: task_newtask: pid\u003d7729 comm\u003dbash clone_flags\u003d1200011 oom_score_adj\u003d-1000\nls-7729 [003] ...2 5151.818504: task_rename: pid\u003d7729 oldcomm\u003dbash newcomm\u003dls oom_score_adj\u003d-1000\nbash-7699 [002] ...1 5175.701468: task_newtask: pid\u003d7730 comm\u003dbash clone_flags\u003d1200011 oom_score_adj\u003d-1000\ngrep-7730 [007] ...2 5175.701993: task_rename: pid\u003d7730 oldcomm\u003dbash newcomm\u003dgrep oom_score_adj\u003d-1000\n\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nAcked-by: David Rientjes \u003crientjes@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b413d48aa70605701c0b395b2e350ca15f5d643a", "tree": "6aa777c589eedfb9dc498f375d553e561e203506", "parents": [ "da066ad3570b88e7dee82e76a06ee9a7adffcf0d" ], "author": { "name": "Konstantin Khlebnikov", "email": "khlebnikov@openvz.org", "time": "Tue Jan 10 15:07:09 2012 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jan 10 16:30:41 2012 -0800" }, "message": "mm-tracepoint: rename page-free events\n\nRename mm_page_free_direct into mm_page_free and mm_pagevec_free into\nmm_page_free_batched\n\nSince v2.6.33-5426-gc475dab the kernel triggers mm_page_free_direct for\nall freed pages, not only for directly freed. So, let\u0027s name it properly.\n For pages freed via page-list we also trigger mm_page_free_batched event.\n\nSigned-off-by: Konstantin Khlebnikov \u003ckhlebnikov@openvz.org\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nReviewed-by: Minchan Kim \u003cminchan.kim@gmail.com\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ff9cb1c4eead5e4c292e75cd3170a82d66944101", "tree": "cdb132a39e550a9b7b28ea67544cb86cd6ebdb6e", "parents": [ "e4e11180dfa545233e5145919b75b7fac88638df", "d50f2ab6f050311dbf7b8f5501b25f0bf64a439b" ], "author": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Tue Jan 10 11:54:07 2012 -0500" }, "committer": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Tue Jan 10 11:54:07 2012 -0500" }, "message": "Merge branch \u0027for_linus\u0027 into for_linus_merged\n\nConflicts:\n\tfs/ext4/ioctl.c\n" }, { "commit": "b7d845f8825b058b80e76320f573505afbf4a1fc", "tree": "dc66dec44b489723427c9c4a9a92ef6e9f17c55b", "parents": [ "2943c833222ef87c111ee0c6b7b8519ad2983e99", "0a92815db789bd5a922d882826cf710f9b0b9d85" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Jan 08 13:35:24 2012 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Jan 08 13:35:24 2012 -0800" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap: (36 commits)\n mfd: Clearing events requires event registers to be writable for da9052-core\n mfd: Fix annotations in da9052-core\n gpiolib: Mark da9052 driver broken\n mfd: Declare da9052_regmap_config for the bus drivers\n MFD: DA9052/53 MFD core module add SPI support v2\n MFD: DA9052/53 MFD core module\n regmap: Add irq_base accessor to regmap_irq\n regmap: Allow drivers to reinitialise the register cache at runtime\n regmap: Add trace event for successful cache reads\n regmap: Allow regmap_update_bits() users to detect changes\n regmap: Report if we actually handled an interrupt in regmap-irq\n regmap: Fix rbtreee build when not using debugfs\n regmap: Provide debugfs dump of the rbtree cache data\n regmap: Do debugfs init before cache init\n regmap: Suppress noop writes in regmap_update_bits()\n regmap: Remove indexed cache type\n regmap: Drop check whether a register is readable in regcache_read\n regmap: Properly round cache_word_size\n regmap: Add support for 10/14 register formating\n regmap: Try cached read before checking if a hardware read is possible\n ...\n" }, { "commit": "0db49b72bce26341274b74fd968501489a361ae3", "tree": "cdb076827aefb38d719d4c42f8ef291c36072fa8", "parents": [ "35b740e4662ef386f0c60e1b60aaf5b44db9914c", "1ac9bc6943edf7d181b4b1cc734981350d4f6bae" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 06 08:33:28 2012 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 06 08:44:54 2012 -0800" }, "message": "Merge branch \u0027sched-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip\n\n* \u0027sched-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (40 commits)\n sched/tracing: Add a new tracepoint for sleeptime\n sched: Disable scheduler warnings during oopses\n sched: Fix cgroup movement of waking process\n sched: Fix cgroup movement of newly created process\n sched: Fix cgroup movement of forking process\n sched: Remove cfs bandwidth period check in tg_set_cfs_period()\n sched: Fix load-balance lock-breaking\n sched: Replace all_pinned with a generic flags field\n sched: Only queue remote wakeups when crossing cache boundaries\n sched: Add missing rcu_dereference() around -\u003ereal_parent usage\n [S390] fix cputime overflow in uptime_proc_show\n [S390] cputime: add sparse checking and cleanup\n sched: Mark parent and real_parent as __rcu\n sched, nohz: Fix missing RCU read lock\n sched, nohz: Set the NOHZ_BALANCE_KICK flag for idle load balancer\n sched, nohz: Fix the idle cpu check in nohz_idle_balance\n sched: Use jump_labels for sched_feat\n sched/accounting: Fix parameter passing in task_group_account_field\n sched/accounting: Fix user/system tick double accounting\n sched/accounting: Re-use scheduler statistics for the root cgroup\n ...\n\nFix up conflicts in\n - arch/ia64/include/asm/cputime.h, include/asm-generic/cputime.h\n\tusecs_to_cputime64() vs the sparse cleanups\n - kernel/sched/fair.c, kernel/time/tick-sched.c\n\tscheduler changes in multiple branches\n" }, { "commit": "423d091dfe58d3109d84c408810a7cfa82f6f184", "tree": "43c4385d1dc7219582f924d42db1f3e203a577bd", "parents": [ "1483b3823542c9721eddf09a077af1e02ac96b50", "919b83452b2e7c1dbced0456015508b4b9585db3" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 06 08:02:40 2012 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 06 08:02:40 2012 -0800" }, "message": "Merge branch \u0027core-rcu-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip\n\n* \u0027core-rcu-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (64 commits)\n cpu: Export cpu_up()\n rcu: Apply ACCESS_ONCE() to rcu_boost() return value\n Revert \"rcu: Permit rt_mutex_unlock() with irqs disabled\"\n docs: Additional LWN links to RCU API\n rcu: Augment rcu_batch_end tracing for idle and callback state\n rcu: Add rcutorture tests for srcu_read_lock_raw()\n rcu: Make rcutorture test for hotpluggability before offlining CPUs\n driver-core/cpu: Expose hotpluggability to the rest of the kernel\n rcu: Remove redundant rcu_cpu_stall_suppress declaration\n rcu: Adaptive dyntick-idle preparation\n rcu: Keep invoking callbacks if CPU otherwise idle\n rcu: Irq nesting is always 0 on rcu_enter_idle_common\n rcu: Don\u0027t check irq nesting from rcu idle entry/exit\n rcu: Permit dyntick-idle with callbacks pending\n rcu: Document same-context read-side constraints\n rcu: Identify dyntick-idle CPUs on first force_quiescent_state() pass\n rcu: Remove dynticks false positives and RCU failures\n rcu: Reduce latency of rcu_prepare_for_idle()\n rcu: Eliminate RCU_FAST_NO_HZ grace-period hang\n rcu: Avoid needlessly IPIing CPUs at GP end\n ...\n" }, { "commit": "1ac9bc6943edf7d181b4b1cc734981350d4f6bae", "tree": "c7853336d693e4593488c26b8ce27ceca3803a6f", "parents": [ "664dfa65e84429d0b68694483e1de7365c7c56fb" ], "author": { "name": "Arun Sharma", "email": "asharma@fb.com", "time": "Wed Dec 21 16:15:40 2011 -0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Dec 23 17:56:17 2011 +0100" }, "message": "sched/tracing: Add a new tracepoint for sleeptime\n\nIf CONFIG_SCHEDSTATS is defined, the kernel maintains\ninformation about how long the task was sleeping or\nin the case of iowait, blocking in the kernel before\ngetting woken up.\n\nThis will be useful for sleep time profiling.\n\nNote: this information is only provided for sched_fair.\nOther scheduling classes may choose to provide this in\nthe future.\n\nNote: the delay includes the time spent on the runqueue\nas well.\n\nSigned-off-by: Arun Sharma \u003casharma@fb.com\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Mathieu Desnoyers \u003cmathieu.desnoyers@efficios.com\u003e\nCc: Arnaldo Carvalho de Melo \u003cacme@infradead.org\u003e\nCc: Andrew Vagin \u003cavagin@openvz.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nLink: http://lkml.kernel.org/r/1324512940-32060-2-git-send-email-asharma@fb.com\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "60e07cf515e541ea3e13b888d273c9b19a2ad9dd", "tree": "d9c2b3a1f4e306cbdb199c4cae9fd3ed03a528b6", "parents": [ "384703b8e6cd4c8ef08512e596024e028c91c339" ], "author": { "name": "Yongqiang Yang", "email": "xiaoqiangnk@gmail.com", "time": "Sun Dec 18 15:49:54 2011 -0500" }, "committer": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Sun Dec 18 15:49:54 2011 -0500" }, "message": "ext4: do not reference pa_inode from group_pa\n\npa_inode in group_pa is set NULL in ext4_mb_new_group_pa, so\npa_inode should be not referenced.\n\nReported-by: Wu Fengguang \u003cfengguang.wu@intel.com\u003e\nSigned-off-by: Yongqiang Yang \u003cxiaoqiangnk@gmail.com\u003e\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n" }, { "commit": "83712358ba0a1497ce59a4f84ce4dd0f803fe6fc", "tree": "d17ab27a7bff50616e3b63ad137c004d9ccfbcb0", "parents": [ "32c7f202a4801252a0f3578807b75a961f792870" ], "author": { "name": "Wu Fengguang", "email": "fengguang.wu@intel.com", "time": "Sat Jun 11 19:25:42 2011 -0600" }, "committer": { "name": "Wu Fengguang", "email": "fengguang.wu@intel.com", "time": "Sun Dec 18 14:20:27 2011 +0800" }, "message": "writeback: dirty ratelimit - think time compensation\n\nCompensate the task\u0027s think time when computing the final pause time,\nso that -\u003edirty_ratelimit can be executed accurately.\n\n think time :\u003d time spend outside of balance_dirty_pages()\n\nIn the rare case that the task slept longer than the 200ms period time\n(result in negative pause time), the sleep time will be compensated in\nthe following periods, too, if it\u0027s less than 1 second.\n\nAccumulated errors are carefully avoided as long as the max pause area\nis not hitted.\n\nPseudo code:\n\n period \u003d pages_dirtied / task_ratelimit;\n think \u003d jiffies - dirty_paused_when;\n pause \u003d period - think;\n\n1) normal case: period \u003e think\n\n pause \u003d period - think\n dirty_paused_when \u003d jiffies + pause\n nr_dirtied \u003d 0\n\n period time\n |\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003e|\n think time pause time\n |\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003e|\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003e|\n ------|----------------|---------------|------------------------\n dirty_paused_when jiffies\n\n2) no pause case: period \u003c\u003d think\n\n don\u0027t pause; reduce future pause time by:\n dirty_paused_when +\u003d period\n nr_dirtied \u003d 0\n\n period time\n |\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003e|\n think time\n |\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003e|\n ------|--------------------------------+-------------------|----\n dirty_paused_when jiffies\n\nAcked-by: Jan Kara \u003cjack@suse.cz\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Wu Fengguang \u003cfengguang.wu@intel.com\u003e\n" }, { "commit": "b3bba872ddb0320a7ecb54decae53c13ceb2ed4c", "tree": "ed47c72d9193d40173e319663d4e1eb1c60a7d15", "parents": [ "384703b8e6cd4c8ef08512e596024e028c91c339" ], "author": { "name": "Wu Fengguang", "email": "fengguang.wu@intel.com", "time": "Thu Dec 08 16:53:54 2011 -0600" }, "committer": { "name": "Wu Fengguang", "email": "fengguang.wu@intel.com", "time": "Sun Dec 18 14:20:17 2011 +0800" }, "message": "writeback: show writeback reason with __print_symbolic\n\nThis makes the binary trace understandable by trace-cmd.\n\nCC: Dave Chinner \u003cdavid@fromorbit.com\u003e\nCC: Curt Wohlgemuth \u003ccurtw@google.com\u003e\nCC: Steven Rostedt \u003crostedt@goodmis.org\u003e\nSigned-off-by: Wu Fengguang \u003cfengguang.wu@intel.com\u003e\n" }, { "commit": "4968c300e1fa5389fdf1f1ebd8b8e4aec9aa4a9e", "tree": "3424a8c3d2543096acad7319ec57fa8f62813620", "parents": [ "101db7b41d8d6c070278bca1f7bce814ecbf781d" ], "author": { "name": "Paul E. McKenney", "email": "paul.mckenney@linaro.org", "time": "Wed Dec 07 16:32:40 2011 -0800" }, "committer": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Sun Dec 11 10:32:22 2011 -0800" }, "message": "rcu: Augment rcu_batch_end tracing for idle and callback state\n\nThe current rcu_batch_end event trace records only the name of the RCU\nflavor and the total number of callbacks that remain queued on the\ncurrent CPU. This is insufficient for testing and tuning the new\ndyntick-idle RCU_FAST_NO_HZ code, so this commit adds idle state along\nwith whether or not any of the callbacks that were ready to invoke\nat the beginning of rcu_do_batch() are still queued.\n\nSigned-off-by: Paul E. McKenney \u003cpaul.mckenney@linaro.org\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\n" }, { "commit": "7cb92499000e3c86dae653077b1465458a039ef6", "tree": "ebc982a5cc562b4fe0cb8f20541f45a5506a0b5f", "parents": [ "3842a0832a1d6eb0b31421f8810a813135967512" ], "author": { "name": "Paul E. McKenney", "email": "paul.mckenney@linaro.org", "time": "Mon Nov 28 12:28:34 2011 -0800" }, "committer": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Sun Dec 11 10:32:07 2011 -0800" }, "message": "rcu: Permit dyntick-idle with callbacks pending\n\nThe current implementation of RCU_FAST_NO_HZ prevents CPUs from entering\ndyntick-idle state if they have RCU callbacks pending. Unfortunately,\nthis has the side-effect of often preventing them from entering this\nstate, especially if at least one other CPU is not in dyntick-idle state.\nHowever, the resulting per-tick wakeup is wasteful in many cases: if the\nCPU has already fully responded to the current RCU grace period, there\nwill be nothing for it to do until this grace period ends, which will\nfrequently take several jiffies.\n\nThis commit therefore permits a CPU that has done everything that the\ncurrent grace period has asked of it (rcu_pending() \u003d\u003d 0) even if it\nstill as RCU callbacks pending. However, such a CPU posts a timer to\nwake it up several jiffies later (6 jiffies, based on experience with\ngrace-period lengths). This wakeup is required to handle situations\nthat can result in all CPUs being in dyntick-idle mode, thus failing\nto ever complete the current grace period. If a CPU wakes up before\nthe timer goes off, then it cancels that timer, thus avoiding spurious\nwakeups.\n\nSigned-off-by: Paul E. McKenney \u003cpaul.mckenney@linaro.org\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\n" }, { "commit": "f535a607c13c7b674e0788ca5765779aa74a01c3", "tree": "433a07d16ff11d9f67e7991831cebf3cadfd9939", "parents": [ "84ad00cb61f1cb21f0b63bc6f7dc254399eb3830" ], "author": { "name": "Paul E. McKenney", "email": "paul.mckenney@linaro.org", "time": "Tue Nov 22 20:43:02 2011 -0800" }, "committer": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Sun Dec 11 10:32:02 2011 -0800" }, "message": "rcu: Eliminate RCU_FAST_NO_HZ grace-period hang\n\nWith the new implementation of RCU_FAST_NO_HZ, it was possible to hang\nRCU grace periods as follows:\n\no\tCPU 0 attempts to go idle, cycles several times through the\n\trcu_prepare_for_idle() loop, then goes dyntick-idle when\n\tRCU needs nothing more from it, while still having at least\n\ton RCU callback pending.\n\no\tCPU 1 goes idle with no callbacks.\n\nBoth CPUs can then stay in dyntick-idle mode indefinitely, preventing\nthe RCU grace period from ever completing, possibly hanging the system.\n\nThis commit therefore prevents CPUs that have RCU callbacks from entering\ndyntick-idle mode. This approach also eliminates the need for the\nend-of-grace-period IPIs used previously.\n\nSigned-off-by: Paul E. McKenney \u003cpaul.mckenney@linaro.org\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\n" }, { "commit": "433cdddcd9ac5558068edd7f8d4707a70f7710f5", "tree": "7f3686eb64c9ee3a239e5920df588c70837c5637", "parents": [ "045fb9315a2129023d70a0eecf0942e18fca4fcd" ], "author": { "name": "Paul E. McKenney", "email": "paul.mckenney@linaro.org", "time": "Tue Nov 22 14:58:03 2011 -0800" }, "committer": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Sun Dec 11 10:32:00 2011 -0800" }, "message": "rcu: Add tracing for RCU_FAST_NO_HZ\n\nThis commit adds trace_rcu_prep_idle(), which is invoked from\nrcu_prepare_for_idle() and rcu_wake_cpu() to trace attempts on\nthe part of RCU to force CPUs into dyntick-idle mode.\n\nSigned-off-by: Paul E. McKenney \u003cpaul.mckenney@linaro.org\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\n" }, { "commit": "045fb9315a2129023d70a0eecf0942e18fca4fcd", "tree": "ede20a4d4edd1d02362af24131114c93a84b77b1", "parents": [ "182dd4b277177e8465ad11cd9f85f282946b5578" ], "author": { "name": "Paul E. McKenney", "email": "paul.mckenney@linaro.org", "time": "Tue Nov 22 12:13:03 2011 -0800" }, "committer": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Sun Dec 11 10:31:59 2011 -0800" }, "message": "rcu: Update trace_rcu_dyntick() header comment\n\nThis commit updates the trace_rcu_dyntick() header comment to reflect\nevents added by commit 4b4f421.\n\nSigned-off-by: Paul E. McKenney \u003cpaul.mckenney@linaro.org\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\n" }, { "commit": "4145fa7fbee3ec1e61c52825b146192885d9759f", "tree": "58e0767a59bf110acb99da3fb5c1f0f0b5170be8", "parents": [ "9ceae0e248fb553c702d51d5275167d462f4efd2" ], "author": { "name": "Paul E. McKenney", "email": "paul.mckenney@linaro.org", "time": "Mon Oct 31 15:01:54 2011 -0700" }, "committer": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Sun Dec 11 10:31:42 2011 -0800" }, "message": "rcu: Deconfuse dynticks entry-exit tracing\n\nThe trace_rcu_dyntick() trace event did not print both the old and\nthe new value of the nesting level, and furthermore printed only\nthe low-order 32 bits of it. This could result in some confusion\nwhen interpreting trace-event dumps, so this commit prints both\nthe old and the new value, prints the full 64 bits, and also selects\nthe process-entry/exit increment to print nicely in hexadecimal.\n\nSigned-off-by: Paul E. McKenney \u003cpaul.mckenney@linaro.org\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nReviewed-by: Josh Triplett \u003cjosh@joshtriplett.org\u003e\n" }, { "commit": "91afaf300269aa99a4d646969b3258b74294ac4d", "tree": "b4d7dd5f5c9933be7873b206624f7b55eb25d906", "parents": [ "a8eecf2248a45bf69f0625b23c003ad2ccd765ee" ], "author": { "name": "Paul E. McKenney", "email": "paul.mckenney@linaro.org", "time": "Sun Oct 02 07:44:32 2011 -0700" }, "committer": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Sun Dec 11 10:31:26 2011 -0800" }, "message": "rcu: Add failure tracing to rcutorture\n\nTrace the rcutorture RCU accesses and dump the trace buffer when the\nfirst failure is detected.\n\nSigned-off-by: Paul E. McKenney \u003cpaul.mckenney@linaro.org\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nReviewed-by: Josh Triplett \u003cjosh@joshtriplett.org\u003e\n" }, { "commit": "9b2e4f1880b789be1f24f9684f7a54b90310b5c0", "tree": "1fa922e0616e298837a7079cb49118188a58186c", "parents": [ "b804cb9e91c6c304959c69d4f9daeef4ffdba71c" ], "author": { "name": "Paul E. McKenney", "email": "paul.mckenney@linaro.org", "time": "Fri Sep 30 12:10:22 2011 -0700" }, "committer": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Sun Dec 11 10:31:24 2011 -0800" }, "message": "rcu: Track idleness independent of idle tasks\n\nEarlier versions of RCU used the scheduling-clock tick to detect idleness\nby checking for the idle task, but handled idleness differently for\nCONFIG_NO_HZ\u003dy. But there are now a number of uses of RCU read-side\ncritical sections in the idle task, for example, for tracing. A more\nfine-grained detection of idleness is therefore required.\n\nThis commit presses the old dyntick-idle code into full-time service,\nso that rcu_idle_enter(), previously known as rcu_enter_nohz(), is\nalways invoked at the beginning of an idle loop iteration. Similarly,\nrcu_idle_exit(), previously known as rcu_exit_nohz(), is always invoked\nat the end of an idle-loop iteration. This allows the idle task to\nuse RCU everywhere except between consecutive rcu_idle_enter() and\nrcu_idle_exit() calls, in turn allowing architecture maintainers to\nspecify exactly where in the idle loop that RCU may be used.\n\nBecause some of the userspace upcall uses can result in what looks\nto RCU like half of an interrupt, it is not possible to expect that\nthe irq_enter() and irq_exit() hooks will give exact counts. This\npatch therefore expands the -\u003edynticks_nesting counter to 64 bits\nand uses two separate bitfields to count process/idle transitions\nand interrupt entry/exit transitions. It is presumed that userspace\nupcalls do not happen in the idle loop or from usermode execution\n(though usermode might do a system call that results in an upcall).\nThe counter is hard-reset on each process/idle transition, which\navoids the interrupt entry/exit error from accumulating. Overflow\nis avoided by the 64-bitness of the -\u003edyntick_nesting counter.\n\nThis commit also adds warnings if a non-idle task asks RCU to enter\nidle state (and these checks will need some adjustment before applying\nFrederic\u0027s OS-jitter patches (http://lkml.org/lkml/2011/10/7/246).\nIn addition, validation of -\u003edynticks and -\u003edynticks_nesting is added.\n\nSigned-off-by: Paul E. McKenney \u003cpaul.mckenney@linaro.org\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nReviewed-by: Josh Triplett \u003cjosh@joshtriplett.org\u003e\n" }, { "commit": "b781a602ac745ee3d5d745276f1e1905a2c101f9", "tree": "bae4134842fba8c0e8ab22a205b73f21eba6c1d4", "parents": [ "391e43da797a96aeb65410281891f6d0b0e9611c" ], "author": { "name": "Andrew Vagin", "email": "avagin@openvz.org", "time": "Mon Nov 28 12:03:35 2011 +0300" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Dec 06 08:51:23 2011 +0100" }, "message": "events, sched: Add tracepoint for accounting blocked time\n\nThis tracepoint shows how long a task is sleeping in uninterruptible state.\n\nE.g. it may show how long and where a mutex is waited for.\n\nSigned-off-by: Andrew Vagin \u003cavagin@openvz.org\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLink: http://lkml.kernel.org/r/1322471015-107825-8-git-send-email-avagin@openvz.org\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "bc7ee55633867909bb05e71f957a4d3c1aa1b488", "tree": "b8465a2ee229fed3a7ea133a983236ffe7f657d7", "parents": [ "018690d33ecf4aa1eb1415e38c40e2b0b6c7808e" ], "author": { "name": "Mark Brown", "email": "broonie@opensource.wolfsonmicro.com", "time": "Wed Nov 30 14:27:08 2011 +0000" }, "committer": { "name": "Mark Brown", "email": "broonie@opensource.wolfsonmicro.com", "time": "Wed Nov 30 20:51:09 2011 +0000" }, "message": "regmap: Add trace event for successful cache reads\n\nCurrently we only trace physical reads, there\u0027s no instrumentation if\nthe read is satisfied from cache.\n\nSigned-off-by: Mark Brown \u003cbroonie@opensource.wolfsonmicro.com\u003e\n" }, { "commit": "32aaeffbd4a7457bf2f7448b33b5946ff2a960eb", "tree": "faf7ad871d87176423ff9ed1d1ba4d9c688fc23f", "parents": [ "208bca0860406d16398145ddd950036a737c3c9d", "67b84999b1a8b1af5625b1eabe92146c5eb42932" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Nov 06 19:44:47 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Nov 06 19:44:47 2011 -0800" }, "message": "Merge branch \u0027modsplit-Oct31_2011\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux\n\n* \u0027modsplit-Oct31_2011\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux: (230 commits)\n Revert \"tracing: Include module.h in define_trace.h\"\n irq: don\u0027t put module.h into irq.h for tracking irqgen modules.\n bluetooth: macroize two small inlines to avoid module.h\n ip_vs.h: fix implicit use of module_get/module_put from module.h\n nf_conntrack.h: fix up fallout from implicit moduleparam.h presence\n include: replace linux/module.h with \"struct module\" wherever possible\n include: convert various register fcns to macros to avoid include chaining\n crypto.h: remove unused crypto_tfm_alg_modname() inline\n uwb.h: fix implicit use of asm/page.h for PAGE_SIZE\n pm_runtime.h: explicitly requires notifier.h\n linux/dmaengine.h: fix implicit use of bitmap.h and asm/page.h\n miscdevice.h: fix up implicit use of lists and types\n stop_machine.h: fix implicit use of smp.h for smp_processor_id\n of: fix implicit use of errno.h in include/linux/of.h\n of_platform.h: delete needless include \u003clinux/module.h\u003e\n acpi: remove module.h include from platform/aclinux.h\n miscdevice.h: delete unnecessary inclusion of module.h\n device_cgroup.h: delete needless include \u003clinux/module.h\u003e\n net: sch_generic remove redundant use of \u003clinux/module.h\u003e\n net: inet_timewait_sock doesnt need \u003clinux/module.h\u003e\n ...\n\nFix up trivial conflicts (other header files, and removal of the ab3550 mfd driver) in\n - drivers/media/dvb/frontends/dibx000_common.c\n - drivers/media/video/{mt9m111.c,ov6650.c}\n - drivers/mfd/ab3550-core.c\n - include/linux/dmaengine.h\n" }, { "commit": "208bca0860406d16398145ddd950036a737c3c9d", "tree": "7797a16c17d8bd155120126fa7976727fc6de013", "parents": [ "6aad3738f6a79fd0ca480eaceefe064cc471f6eb", "0e175a1835ffc979e55787774e58ec79e41957d7" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Nov 06 19:02:23 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Nov 06 19:02:23 2011 -0800" }, "message": "Merge branch \u0027writeback-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/linux\n\n* \u0027writeback-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/linux:\n writeback: Add a \u0027reason\u0027 to wb_writeback_work\n writeback: send work item to queue_io, move_expired_inodes\n writeback: trace event balance_dirty_pages\n writeback: trace event bdi_dirty_ratelimit\n writeback: fix ppc compile warnings on do_div(long long, unsigned long)\n writeback: per-bdi background threshold\n writeback: dirty position control - bdi reserve area\n writeback: control dirty pause time\n writeback: limit max dirty pause time\n writeback: IO-less balance_dirty_pages()\n writeback: per task dirty rate limit\n writeback: stabilize bdi-\u003edirty_ratelimit\n writeback: dirty rate control\n writeback: add bg_threshold parameter to __bdi_update_bandwidth()\n writeback: dirty position control\n writeback: account per-bdi accumulated dirtied pages\n" }, { "commit": "f1f8935a5c38a2c61e86a42bc971a2539eef2211", "tree": "694950045f2f5d89507d7206cf6595e09cdfbd2c", "parents": [ "34116645d912f65d7eb4508a1db3c9d0e45facb1", "f2a44523b20f323e4aef7c16261d34d6f0a4bf06" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Nov 02 10:06:20 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Nov 02 10:06:20 2011 -0700" }, "message": "Merge branch \u0027for_linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4\n\n* \u0027for_linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (97 commits)\n jbd2: Unify log messages in jbd2 code\n jbd/jbd2: validate sb-\u003es_first in journal_get_superblock()\n ext4: let ext4_ext_rm_leaf work with EXT_DEBUG defined\n ext4: fix a syntax error in ext4_ext_insert_extent when debugging enabled\n ext4: fix a typo in struct ext4_allocation_context\n ext4: Don\u0027t normalize an falloc request if it can fit in 1 extent.\n ext4: remove comments about extent mount option in ext4_new_inode()\n ext4: let ext4_discard_partial_buffers handle unaligned range correctly\n ext4: return ENOMEM if find_or_create_pages fails\n ext4: move vars to local scope in ext4_discard_partial_page_buffers_no_lock()\n ext4: Create helper function for EXT4_IO_END_UNWRITTEN and i_aiodio_unwritten\n ext4: optimize locking for end_io extent conversion\n ext4: remove unnecessary call to waitqueue_active()\n ext4: Use correct locking for ext4_end_io_nolock()\n ext4: fix race in xattr block allocation path\n ext4: trace punch_hole correctly in ext4_ext_map_blocks\n ext4: clean up AGGRESSIVE_TEST code\n ext4: move variables to their scope\n ext4: fix quota accounting during migration\n ext4: migrate cleanup\n ...\n" }, { "commit": "4356f21d09283dc6d39a6f7287a65ddab61e2808", "tree": "34822a1662ea83291455834556a4fb5bf98ecd72", "parents": [ "b9e84ac1536d35aee03b2601f19694949f0bd506" ], "author": { "name": "Minchan Kim", "email": "minchan.kim@gmail.com", "time": "Mon Oct 31 17:06:47 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Oct 31 17:30:44 2011 -0700" }, "message": "mm: change isolate mode from #define to bitwise type\n\nChange ISOLATE_XXX macro with bitwise isolate_mode_t type. Normally,\nmacro isn\u0027t recommended as it\u0027s type-unsafe and making debugging harder as\nsymbol cannot be passed throught to the debugger.\n\nQuote from Johannes\n\" Hmm, it would probably be cleaner to fully convert the isolation mode\ninto independent flags. INACTIVE, ACTIVE, BOTH is currently a\ntri-state among flags, which is a bit ugly.\"\n\nThis patch moves isolate mode from swap.h to mmzone.h by memcontrol.h\n\nSigned-off-by: Minchan Kim \u003cminchan.kim@gmail.com\u003e\nCc: Johannes Weiner \u003channes@cmpxchg.org\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Mel Gorman \u003cmgorman@suse.de\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nCc: Michal Hocko \u003cmhocko@suse.cz\u003e\nCc: Andrea Arcangeli \u003caarcange@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "67b84999b1a8b1af5625b1eabe92146c5eb42932", "tree": "5e746daf684ba699b02a489c75a8d501dddbc6b0", "parents": [ "ec53cf23c0ddb0c29950b9a4ac46964c4c6c6c2f" ], "author": { "name": "Paul Gortmaker", "email": "paul.gortmaker@windriver.com", "time": "Sun Sep 18 13:36:07 2011 -0400" }, "committer": { "name": "Paul Gortmaker", "email": "paul.gortmaker@windriver.com", "time": "Mon Oct 31 19:32:35 2011 -0400" }, "message": "Revert \"tracing: Include module.h in define_trace.h\"\n\nThis reverts commit 3a9f987b3141f086de27832514aad9f50a53f754.\n\nWith all the files that are real modules now having module.h\nexplicitly called out for inclusion, and no reliance on any\nimplicit presence of module.h assumed, we should no longer\nneed this workaround.\n\nSigned-off-by: Paul Gortmaker \u003cpaul.gortmaker@windriver.com\u003e\n" }, { "commit": "de47725421ad5627a5c905f4e40bb844ebc06d29", "tree": "bc23b0405d4a79dcc866a8b2877f128ee0ea9ffc", "parents": [ "eb5589a8f0dab7e29021344228856339e6a1249c" ], "author": { "name": "Paul Gortmaker", "email": "paul.gortmaker@windriver.com", "time": "Thu May 26 13:46:22 2011 -0400" }, "committer": { "name": "Paul Gortmaker", "email": "paul.gortmaker@windriver.com", "time": "Mon Oct 31 19:32:32 2011 -0400" }, "message": "include: replace linux/module.h with \"struct module\" wherever possible\n\nThe \u003clinux/module.h\u003e pretty much brings in the kitchen sink along\nwith it, so it should be avoided wherever reasonably possible in\nterms of being included from other commonly used \u003clinux/something.h\u003e\nfiles, as it results in a measureable increase on compile times.\n\nThe worst culprit was probably device.h since it is used everywhere.\nThis file also had an implicit dependency/usage of mutex.h which was\nmasked by module.h, and is also fixed here at the same time.\n\nThere are over a dozen other headers that simply declare the\nstruct instead of pulling in the whole file, so follow their lead\nand simply make it a few more.\n\nMost of the implicit dependencies on module.h being present by\nthese headers pulling it in have been now weeded out, so we can\nfinally make this change with hopefully minimal breakage.\n\nSigned-off-by: Paul Gortmaker \u003cpaul.gortmaker@windriver.com\u003e\n" }, { "commit": "0e175a1835ffc979e55787774e58ec79e41957d7", "tree": "6ec4b65a8de4e9d1c12d26a1079079ed81d79450", "parents": [ "ad4e38dd6a33bb3a4882c487d7abe621e583b982" ], "author": { "name": "Curt Wohlgemuth", "email": "curtw@google.com", "time": "Fri Oct 07 21:54:10 2011 -0600" }, "committer": { "name": "Wu Fengguang", "email": "fengguang.wu@intel.com", "time": "Mon Oct 31 00:33:36 2011 +0800" }, "message": "writeback: Add a \u0027reason\u0027 to wb_writeback_work\n\nThis creates a new \u0027reason\u0027 field in a wb_writeback_work\nstructure, which unambiguously identifies who initiates\nwriteback activity. A \u0027wb_reason\u0027 enumeration has been\nadded to writeback.h, to enumerate the possible reasons.\n\nThe \u0027writeback_work_class\u0027 and tracepoint event class and\n\u0027writeback_queue_io\u0027 tracepoints are updated to include the\nsymbolic \u0027reason\u0027 in all trace events.\n\nAnd the \u0027writeback_inodes_sbXXX\u0027 family of routines has had\na wb_stats parameter added to them, so callers can specify\nwhy writeback is being started.\n\nAcked-by: Jan Kara \u003cjack@suse.cz\u003e\nSigned-off-by: Curt Wohlgemuth \u003ccurtw@google.com\u003e\nSigned-off-by: Wu Fengguang \u003cfengguang.wu@intel.com\u003e\n" } ], "next": "ad4e38dd6a33bb3a4882c487d7abe621e583b982" }