)]}' { "log": [ { "commit": "f94181da7192f4ed8ccb1b633ea4ce56954df130", "tree": "2e28785f2df447573a11fbdd611dc19eb3fcb794", "parents": [ "932adbed6d99cc373fc3433d701b3a594fea872c", "fdbc0450df12cc9cb397f3497db4b0cad7c1a8ff" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jan 06 17:10:04 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jan 06 17:10:04 2009 -0800" }, "message": "Merge branch \u0027core-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027core-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n rcu: fix rcutorture bug\n rcu: eliminate synchronize_rcu_xxx macro\n rcu: make treercu safe for suspend and resume\n rcu: fix rcutree grace-period-latency bug on small systems\n futex: catch certain assymetric (get|put)_futex_key calls\n futex: make futex_(get|put)_key() calls symmetric\n locking, percpu counters: introduce separate lock classes\n swiotlb: clean up EXPORT_SYMBOL usage\n swiotlb: remove unnecessary declaration\n swiotlb: replace architecture-specific swiotlb.h with linux/swiotlb.h\n swiotlb: add support for systems with highmem\n swiotlb: store phys address in io_tlb_orig_addr array\n swiotlb: add hwdev to swiotlb_phys_to_bus() / swiotlb_sg_to_bus()\n" }, { "commit": "179f7ebff6be45738c6e2fa68c8d2cc5c2c6308e", "tree": "3d48b5f825cfa29f5b39656503c5157872454e9f", "parents": [ "e3d5a27d5862b6425d0879272e24abecf7245105" ], "author": { "name": "Eric Dumazet", "email": "dada1@cosmosbay.com", "time": "Tue Jan 06 14:41:04 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jan 06 15:59:13 2009 -0800" }, "message": "percpu_counter: FBC_BATCH should be a variable\n\nFor NR_CPUS \u003e\u003d 16 values, FBC_BATCH is 2*NR_CPUS\n\nConsidering more and more distros are using high NR_CPUS values, it makes\nsense to use a more sensible value for FBC_BATCH, and get rid of NR_CPUS.\n\nA sensible value is 2*num_online_cpus(), with a minimum value of 32 (This\nminimum value helps branch prediction in __percpu_counter_add())\n\nWe already have a hotcpu notifier, so we can adjust FBC_BATCH dynamically.\n\nWe rename FBC_BATCH to percpu_counter_batch since its not a constant\nanymore.\n\nSigned-off-by: Eric Dumazet \u003cdada1@cosmosbay.com\u003e\nAcked-by: David S. Miller \u003cdavem@davemloft.net\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "fdbc0450df12cc9cb397f3497db4b0cad7c1a8ff", "tree": "3d266bd156f140f06b22f27784a7487bba6d6da5", "parents": [ "46483d10e5123d78cf9abf37577aa8e75f18b8a4", "90621c40cc4ab7b0a414311ce37e7cc7173403b6", "ea319518ba3de282c13ae1cf4bf2215c5e03e67e", "238c6d54830c624f34ac9cf123ac04aebfca5013" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Jan 06 09:32:11 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Jan 06 09:32:11 2009 +0100" }, "message": "Merge branches \u0027core/futexes\u0027, \u0027core/locking\u0027, \u0027core/rcu\u0027 and \u0027linus\u0027 into core/urgent\n" }, { "commit": "ea319518ba3de282c13ae1cf4bf2215c5e03e67e", "tree": "72eea2b8e5d8926e95ade18d610d59b13df5dae5", "parents": [ "00ef9f7348dfd2fc223ec42aceb30836e86b367f" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Fri Dec 26 15:08:55 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Dec 29 13:43:00 2008 +0100" }, "message": "locking, percpu counters: introduce separate lock classes\n\nImpact: fix lockdep false positives\n\nClassify percpu_counter instances similar to regular lock objects --\nthat is, per instantiation site.\n\nThe networking code has increased its use of percpu_counters, which\nleads to false positives if they are treated as a single class.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "02d211688727ad02bb4555b1aa8ae2de16b21b39", "tree": "2ee10b2f0cbfb615c40a2df98627426b8543d6cd", "parents": [ "71c5576fbd809f2015f4eddf72e501e298720cf3" ], "author": { "name": "Andrew Morton", "email": "akpm@linux-foundation.org", "time": "Tue Dec 09 13:14:14 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Dec 10 08:01:52 2008 -0800" }, "message": "revert \"percpu_counter: new function percpu_counter_sum_and_set\"\n\nRevert\n\n commit e8ced39d5e8911c662d4d69a342b9d053eaaac4e\n Author: Mingming Cao \u003ccmm@us.ibm.com\u003e\n Date: Fri Jul 11 19:27:31 2008 -0400\n\n percpu_counter: new function percpu_counter_sum_and_set\n\nAs described in\n\n\trevert \"percpu counter: clean up percpu_counter_sum_and_set()\"\n\nthe new percpu_counter_sum_and_set() is racy against updates to the\ncpu-local accumulators on other CPUs. Revert that change.\n\nThis means that ext4 will be slow again. But correct.\n\nReported-by: Eric Dumazet \u003cdada1@cosmosbay.com\u003e\nCc: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Mingming Cao \u003ccmm@us.ibm.com\u003e\nCc: \u003clinux-ext4@vger.kernel.org\u003e\nCc: \u003cstable@kernel.org\u003e\t\t[2.6.27.x]\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "71c5576fbd809f2015f4eddf72e501e298720cf3", "tree": "b2d1ac56e6c3c9a60946a180cd45d493fc60738a", "parents": [ "fd3d664fef97cf01f8e28fe0b024ad52f3bbc1bc" ], "author": { "name": "Andrew Morton", "email": "akpm@linux-foundation.org", "time": "Tue Dec 09 13:14:13 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Dec 10 08:01:52 2008 -0800" }, "message": "revert \"percpu counter: clean up percpu_counter_sum_and_set()\"\n\nRevert\n\n commit 1f7c14c62ce63805f9574664a6c6de3633d4a354\n Author: Mingming Cao \u003ccmm@us.ibm.com\u003e\n Date: Thu Oct 9 12:50:59 2008 -0400\n\n percpu counter: clean up percpu_counter_sum_and_set()\n\nBefore this patch we had the following:\n\npercpu_counter_sum(): return the percpu_counter\u0027s value\n\npercpu_counter_sum_and_set(): return the percpu_counter\u0027s value, copying\nthat value into the central value and zeroing the per-cpu counters before\nreturning.\n\nAfter this patch, percpu_counter_sum_and_set() has gone, and\npercpu_counter_sum() gets the old percpu_counter_sum_and_set()\nfunctionality.\n\nProblem is, as Eric points out, the old percpu_counter_sum_and_set()\nfunctionality was racy and wrong. It zeroes out counters on \"other\" cpus,\nwithout holding any locks which will prevent races agaist updates from\nthose other CPUS.\n\nThis patch reverts 1f7c14c62ce63805f9574664a6c6de3633d4a354. This means\nthat percpu_counter_sum_and_set() still has the race, but\npercpu_counter_sum() does not.\n\nNote that this is not a simple revert - ext4 has since started using\npercpu_counter_sum() for its dirty_blocks counter as well.\n\nNote that this revert patch changes percpu_counter_sum() semantics.\n\nBefore the patch, a call to percpu_counter_sum() will bring the counter\u0027s\ncentral counter mostly up-to-date, so a following percpu_counter_read()\nwill return a close value.\n\nAfter this patch, a call to percpu_counter_sum() will leave the counter\u0027s\ncentral accumulator unaltered, so a subsequent call to\npercpu_counter_read() can now return a significantly inaccurate result.\n\nIf there is any code in the tree which was introduced after\ne8ced39d5e8911c662d4d69a342b9d053eaaac4e was merged, and which depends\nupon the new percpu_counter_sum() semantics, that code will break.\n\nReported-by: Eric Dumazet \u003cdada1@cosmosbay.com\u003e\nCc: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Mingming Cao \u003ccmm@us.ibm.com\u003e\nCc: \u003clinux-ext4@vger.kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "fd3d664fef97cf01f8e28fe0b024ad52f3bbc1bc", "tree": "cc1b4d38e5ebd88c25b2bcee684c9e882be9a2ac", "parents": [ "fe102c71a65a503646bcc94ccb6859da613c2f4f" ], "author": { "name": "Eric Dumazet", "email": "dada1@cosmosbay.com", "time": "Tue Dec 09 13:14:11 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Dec 10 08:01:52 2008 -0800" }, "message": "percpu_counter: fix CPU unplug race in percpu_counter_destroy()\n\nWe should first delete the counter from percpu_counters list\nbefore freeing memory, or a percpu_counter_hotcpu_callback()\ncould dereference a NULL pointer.\n\nSigned-off-by: Eric Dumazet \u003cdada1@cosmosbay.com\u003e\nAcked-by: David S. Miller \u003cdavem@davemloft.net\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Mingming Cao \u003ccmm@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "1f7c14c62ce63805f9574664a6c6de3633d4a354", "tree": "68f9f5399bc64bf7fe87dae16d8cc287717208bf", "parents": [ "3fa8749e584b55f1180411ab1b51117190bac1e5" ], "author": { "name": "Mingming Cao", "email": "cmm@us.ibm.com", "time": "Thu Oct 09 12:50:59 2008 -0400" }, "committer": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Thu Oct 09 12:50:59 2008 -0400" }, "message": "percpu counter: clean up percpu_counter_sum_and_set()\n\npercpu_counter_sum_and_set() and percpu_counter_sum() is the same except\nthe former updates the global counter after accounting. Since we are\ntaking the fbc-\u003elock to calculate the precise value of the counter in\npercpu_counter_sum() anyway, it should simply set fbc-\u003ecount too, as the\npercpu_counter_sum_and_set() does.\n\nThis patch merges these two interfaces into one.\n \nSigned-off-by: Mingming Cao \u003ccmm@us.ibm.com\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: \u003clinux-ext4@vger.kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n" }, { "commit": "e8ced39d5e8911c662d4d69a342b9d053eaaac4e", "tree": "cd4d643bfbd37c67ff9bd2feff2c0b477a56f117", "parents": [ "64769240bd07f446f83660bb143bb609d8ab4910" ], "author": { "name": "Mingming Cao", "email": "cmm@us.ibm.com", "time": "Fri Jul 11 19:27:31 2008 -0400" }, "committer": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Fri Jul 11 19:27:31 2008 -0400" }, "message": "percpu_counter: new function percpu_counter_sum_and_set\n\nDelayed allocation need to check free blocks at every write time.\npercpu_counter_read_positive() is not quit accurate. delayed\nallocation need a more accurate accounting, but using\npercpu_counter_sum_positive() is frequently is quite expensive.\n\nThis patch added a new function to update center counter when sum\nper-cpu counter, to increase the accurate rate for next\npercpu_counter_read() and require less calling expensive\npercpu_counter_sum().\n\nSigned-off-by: Mingming Cao \u003ccmm@us.ibm.com\u003e\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n\n" }, { "commit": "cf0ca9fe5dd9e3693d935757a7b2fc50fc576554", "tree": "c795c5271eda9fc67579fa3176c646b892dfdb41", "parents": [ "caafa4324335aeb11bc233d5f87aca8cce30beba" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Wed Apr 30 00:54:32 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Apr 30 08:29:49 2008 -0700" }, "message": "mm: bdi: export BDI attributes in sysfs\n\nProvide a place in sysfs (/sys/class/bdi) for the backing_dev_info object.\nThis allows us to see and set the various BDI specific variables.\n\nIn particular this properly exposes the read-ahead window for all relevant\nusers and /sys/block/\u003cblock\u003e/queue/read_ahead_kb should be deprecated.\n\nWith patient help from Kay Sievers and Greg KH\n\n[mszeredi@suse.cz]\n\n - split off NFS and FUSE changes into separate patches\n - document new sysfs attributes under Documentation/ABI\n - do bdi_class_init as a core_initcall, otherwise the \"default\" BDI\n won\u0027t be initialized\n - remove bdi_init_fmt macro, it\u0027s not used very much\n\n[akpm@linux-foundation.org: fix ia64 warning]\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Kay Sievers \u003ckay.sievers@vrfy.org\u003e\nAcked-by: Greg KH \u003cgreg@kroah.com\u003e\nCc: Trond Myklebust \u003ctrond.myklebust@fys.uio.no\u003e\nSigned-off-by: Miklos Szeredi \u003cmszeredi@suse.cz\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "d2b20b11547cefc89d6c81937e81afaf3c62808b", "tree": "50a6c8e1d86c38fff417907d821eec0e0731e1a5", "parents": [ "73e753a50dcac7d6d4fa8b9552203ef544a70d77" ], "author": { "name": "Gautham R Shenoy", "email": "ego@in.ibm.com", "time": "Thu Oct 18 23:40:47 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Oct 19 11:53:44 2007 -0700" }, "message": "Add irq protection in the percpu-counters cpu-hotplug-callback path\n\nSome of the per-cpu counters and thus their locks are accessed from IRQ\ncontexts. This can cause a deadlock if it interrupts a cpu-offline thread\nwhich is transferring a dead-cpu\u0027s counts to the global counter.\n\nAdd appropriate IRQ protection in the cpu-hotplug callback path.\n\nSigned-off-by: Gautham R Shenoy \u003cego@in.ibm.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "dc62a30e274d003a4d08fb888f1520add4b21373", "tree": "15835cabc7b9fbc6b213be6f7c0fa5003e44fdb3", "parents": [ "833f4077bf7c2dcff6e31526e03ec2ad91c88581" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Tue Oct 16 23:25:46 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Oct 17 08:42:44 2007 -0700" }, "message": "lib: percpu_counter_init_irq\n\nprovide a way to tell lockdep about percpu_counters that are supposed to be\nused from irq safe contexts.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "833f4077bf7c2dcff6e31526e03ec2ad91c88581", "tree": "80916540be846267342c3e5e4a6255c2c18b44d5", "parents": [ "bf1d89c81352f6eca72d0c10cfee3dba29ef5efb" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Tue Oct 16 23:25:45 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Oct 17 08:42:44 2007 -0700" }, "message": "lib: percpu_counter_init error handling\n\nalloc_percpu can fail, propagate that error.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "bf1d89c81352f6eca72d0c10cfee3dba29ef5efb", "tree": "4154acea12a0273ffbc3eafe39530b2e25aa4ed5", "parents": [ "52d9f3b4090922f34497ace82bd062d80a465a29" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Tue Oct 16 23:25:45 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Oct 17 08:42:44 2007 -0700" }, "message": "lib: percpu_count_sum()\n\nProvide an accurate version of percpu_counter_read.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "52d9f3b4090922f34497ace82bd062d80a465a29", "tree": "77ee238498a5b205fa80e58b41212a9e3334c8bf", "parents": [ "3a587f47b82f96f19318c036e7b979fcd5c3848f" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Tue Oct 16 23:25:44 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Oct 17 08:42:44 2007 -0700" }, "message": "lib: percpu_counter_sum_positive\n\n s/percpu_counter_sum/\u0026_positive/\n\nBecause its consitent with percpu_counter_read*\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "3a587f47b82f96f19318c036e7b979fcd5c3848f", "tree": "84b3254a7ea7524784f7e262d651cc332b3b0063", "parents": [ "20e89767096392a2cb2404437d3d181b8827af38" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Tue Oct 16 23:25:44 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Oct 17 08:42:44 2007 -0700" }, "message": "lib: percpu_counter_set\n\nProvide a method to set a percpu counter to a specified value.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "20e89767096392a2cb2404437d3d181b8827af38", "tree": "a20dd2e0c987d12e9161d5784a58c55f4aa0862f", "parents": [ "252e0ba6b77dcfae448fa2fbaf796e8a83839e75" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Tue Oct 16 23:25:43 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Oct 17 08:42:44 2007 -0700" }, "message": "lib: make percpu_counter_add take s64\n\npercpu_counter is a s64 counter, make _add consitent.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "252e0ba6b77dcfae448fa2fbaf796e8a83839e75", "tree": "f21bcd6994b65ba947b41ae7d2519a960185a029", "parents": [ "3cb4f9fa0c5f3ded9f70f85b70ee6d429834f911" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Tue Oct 16 23:25:43 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Oct 17 08:42:44 2007 -0700" }, "message": "lib: percpu_counter variable batch\n\nBecause the current batch setup has an quadric error bound on the counter,\nallow for an alternative setup.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "aa0dff2d09bfa50b7d02714a45920c64568e699d", "tree": "ef94abad6a7c82da3ef9ecfb296d9bc1d3d4efb6", "parents": [ "c4dc4beed23827e155d7cbc2a1ffa3949eddd194" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Tue Oct 16 23:25:42 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Oct 17 08:42:44 2007 -0700" }, "message": "lib: percpu_counter_add\n\n s/percpu_counter_mod/percpu_counter_add/\n\nBecause its a better name, _mod implies modulo.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b4ef0296f214a1e0e65f161f88663b0ca1acca31", "tree": "57d0aa7e7201b6becf3bc69763e3efb090a297ce", "parents": [ "c67ad917cbf21b2862e2cf8e8b28339872ef7927" ], "author": { "name": "Andrew Morton", "email": "akpm@linux-foundation.org", "time": "Sun Jul 15 23:39:51 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:41 2007 -0700" }, "message": "percpu_counters: use for_each_online_cpu()\n\nNow that we have implemented hotunplug-time counter spilling,\npercpu_counter_sum() only needs to look at online CPUs.\n\nCc: Gautham R Shenoy \u003cego@in.ibm.com\u003e\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c67ad917cbf21b2862e2cf8e8b28339872ef7927", "tree": "362d8cf8668998b8cd5deb611693f584b8df5ee5", "parents": [ "85420ccad1610f123365eec89848ef25641bc6b7" ], "author": { "name": "Andrew Morton", "email": "akpm@linux-foundation.org", "time": "Sun Jul 15 23:39:51 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:41 2007 -0700" }, "message": "percpu_counters(): use cpu notifiers\n\nper-cpu counters presently must iterate over all possible CPUs in the\nexhaustive percpu_counter_sum().\n\nBut it can be much better to only iterate over the presently-online CPUs. To\ndo this, we must arrange for an offlined CPU\u0027s count to be spilled into the\ncounter\u0027s central count.\n\nWe can do this for all percpu_counters in the machine by linking them into a\nsingle global list and walking that list at CPU_DEAD time.\n\n(I hope. Might have race windows in which the percpu_counter_sum() count is\ninaccurate?)\n\nCc: Gautham R Shenoy \u003cego@in.ibm.com\u003e\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "0216bfcffe424a5473daa4da47440881b36c1f41", "tree": "80eaa49bfc644b070e57c251285048992ac6fafc", "parents": [ "3cbc564024d8f174202f023e8a2991782f6a9431" ], "author": { "name": "Mingming Cao", "email": "cmm@us.ibm.com", "time": "Fri Jun 23 02:05:41 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 23 07:43:06 2006 -0700" }, "message": "[PATCH] percpu counter data type changes to suppport more than 2**31 ext3 free blocks counter\n\nThe percpu counter data type are changed in this set of patches to support\nmore users like ext3 who need more than 32 bit to store the free blocks\ntotal in the filesystem.\n\n- Generic perpcu counters data type changes. The size of the global counter\n and local counter were explictly specified using s64 and s32. The global\n counter is changed from long to s64, while the local counter is changed from\n long to s32, so we could avoid doing 64 bit update in most cases.\n\n- Users of the percpu counters are updated to make use of the new\n percpu_counter_init() routine now taking an additional parameter to allow\n users to pass the initial value of the global counter.\n\nSigned-off-by: Mingming Cao \u003ccmm@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "3cbc564024d8f174202f023e8a2991782f6a9431", "tree": "5d523ef9694b7a0bf07d4db58718f4654afa3f04", "parents": [ "d09042da7284a86ffbdd18695f517a71514ed598" ], "author": { "name": "Ravikiran G Thirumalai", "email": "kiran@scalex86.org", "time": "Fri Jun 23 02:05:40 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 23 07:43:06 2006 -0700" }, "message": "[PATCH] percpu_counters: create lib/percpu_counter.c\n\n- Move percpu_counter routines from mm/swap.c to lib/percpu_counter.c\n\nSigned-off-by: Ravikiran Thirumalai \u003ckiran@scalex86.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" } ] }