)]}' { "log": [ { "commit": "fb1c8f93d869b34cacb8b8932e2b83d96a19d720", "tree": "a006d078aa02e421a7dc4793c335308204859d36", "parents": [ "4327edf6b8a7ac7dce144313947995538842d8fd" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sat Sep 10 00:25:56 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sat Sep 10 10:06:21 2005 -0700" }, "message": "[PATCH] spinlock consolidation\n\nThis patch (written by me and also containing many suggestions of Arjan van\nde Ven) does a major cleanup of the spinlock code. It does the following\nthings:\n\n - consolidates and enhances the spinlock/rwlock debugging code\n\n - simplifies the asm/spinlock.h files\n\n - encapsulates the raw spinlock type and moves generic spinlock\n features (such as -\u003ebreak_lock) into the generic code.\n\n - cleans up the spinlock code hierarchy to get rid of the spaghetti.\n\nMost notably there\u0027s now only a single variant of the debugging code,\nlocated in lib/spinlock_debug.c. (previously we had one SMP debugging\nvariant per architecture, plus a separate generic one for UP builds)\n\nAlso, i\u0027ve enhanced the rwlock debugging facility, it will now track\nwrite-owners. There is new spinlock-owner/CPU-tracking on SMP builds too.\nAll locks have lockup detection now, which will work for both soft and hard\nspin/rwlock lockups.\n\nThe arch-level include files now only contain the minimally necessary\nsubset of the spinlock code - all the rest that can be generalized now\nlives in the generic headers:\n\n include/asm-i386/spinlock_types.h | 16\n include/asm-x86_64/spinlock_types.h | 16\n\nI have also split up the various spinlock variants into separate files,\nmaking it easier to see which does what. The new layout is:\n\n SMP | UP\n ----------------------------|-----------------------------------\n asm/spinlock_types_smp.h | linux/spinlock_types_up.h\n linux/spinlock_types.h | linux/spinlock_types.h\n asm/spinlock_smp.h | linux/spinlock_up.h\n linux/spinlock_api_smp.h | linux/spinlock_api_up.h\n linux/spinlock.h | linux/spinlock.h\n\n/*\n * here\u0027s the role of the various spinlock/rwlock related include files:\n *\n * on SMP builds:\n *\n * asm/spinlock_types.h: contains the raw_spinlock_t/raw_rwlock_t and the\n * initializers\n *\n * linux/spinlock_types.h:\n * defines the generic type and initializers\n *\n * asm/spinlock.h: contains the __raw_spin_*()/etc. lowlevel\n * implementations, mostly inline assembly code\n *\n * (also included on UP-debug builds:)\n *\n * linux/spinlock_api_smp.h:\n * contains the prototypes for the _spin_*() APIs.\n *\n * linux/spinlock.h: builds the final spin_*() APIs.\n *\n * on UP builds:\n *\n * linux/spinlock_type_up.h:\n * contains the generic, simplified UP spinlock type.\n * (which is an empty structure on non-debug builds)\n *\n * linux/spinlock_types.h:\n * defines the generic type and initializers\n *\n * linux/spinlock_up.h:\n * contains the __raw_spin_*()/etc. version of UP\n * builds. (which are NOPs on non-debug, non-preempt\n * builds)\n *\n * (included on UP-non-debug builds:)\n *\n * linux/spinlock_api_up.h:\n * builds the _spin_*() APIs.\n *\n * linux/spinlock.h: builds the final spin_*() APIs.\n */\n\nAll SMP and UP architectures are converted by this patch.\n\narm, i386, ia64, ppc, ppc64, s390/s390x, x64 was build-tested via\ncrosscompilers. m32r, mips, sh, sparc, have not been tested yet, but should\nbe mostly fine.\n\nFrom: Grant Grundler \u003cgrundler@parisc-linux.org\u003e\n\n Booted and lightly tested on a500-44 (64-bit, SMP kernel, dual CPU).\n Builds 32-bit SMP kernel (not booted or tested). I did not try to build\n non-SMP kernels. That should be trivial to fix up later if necessary.\n\n I converted bit ops atomic_hash lock to raw_spinlock_t. Doing so avoids\n some ugly nesting of linux/*.h and asm/*.h files. Those particular locks\n are well tested and contained entirely inside arch specific code. I do NOT\n expect any new issues to arise with them.\n\n If someone does ever need to use debug/metrics with them, then they will\n need to unravel this hairball between spinlocks, atomic ops, and bit ops\n that exist only because parisc has exactly one atomic instruction: LDCW\n (load and clear word).\n\nFrom: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\n\n ia64 fix\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Arjan van de Ven \u003carjanv@infradead.org\u003e\nSigned-off-by: Grant Grundler \u003cgrundler@parisc-linux.org\u003e\nCc: Matthew Wilcox \u003cwilly@debian.org\u003e\nSigned-off-by: Hirokazu Takata \u003ctakata@linux-m32r.org\u003e\nSigned-off-by: Mikael Pettersson \u003cmikpe@csd.uu.se\u003e\nSigned-off-by: Benoit Boissinot \u003cbenoit.boissinot@ens-lyon.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "4f07118f656c179740cad35b827032e2e29b1210", "tree": "7ddeb17346fe25ae75aa5373659c053afb9ef5f5", "parents": [ "442464a50077ff00454ff8d7628cbe1b8eacc034" ], "author": { "name": "David S. Miller", "email": "davem@davemloft.net", "time": "Mon Aug 29 12:46:22 2005 -0700" }, "committer": { "name": "David S. Miller", "email": "davem@davemloft.net", "time": "Mon Aug 29 12:46:22 2005 -0700" }, "message": "[SPARC64]: More fully work around Spitfire Errata 51.\n\nIt appears that a memory barrier soon after a mispredicted\nbranch, not just in the delay slot, can cause the hang\ncondition of this cpu errata.\n\nSo move them out-of-line, and explicitly put them into\na \"branch always, predict taken\" delay slot which should\nfully kill this problem.\n\nSigned-off-by: David S. Miller \u003cdavem@davemloft.net\u003e\n" }, { "commit": "442464a50077ff00454ff8d7628cbe1b8eacc034", "tree": "d076c18c8f9d860ee9f357a78b87d0ede8286585", "parents": [ "ca7c8d2c1e2a2f2445cb5e00f45b93af57f22c1b" ], "author": { "name": "David S. Miller", "email": "davem@davemloft.net", "time": "Mon Aug 29 12:46:07 2005 -0700" }, "committer": { "name": "David S. Miller", "email": "davem@davemloft.net", "time": "Mon Aug 29 12:46:07 2005 -0700" }, "message": "[SPARC64]: Make debugging spinlocks usable again.\n\nWhen the spinlock routines were moved out of line into\nkernel/spinlock.c this made it so that the debugging\nspinlocks record lock acquisition program counts in the\nkernel/spinlock.c functions not in their callers.\nThis makes the debugging info kind of useless.\n\nSo record the correct caller\u0027s program counter and\nnow this feature is useful once more.\n\nSigned-off-by: David S. Miller \u003cdavem@davemloft.net\u003e\n" }, { "commit": "b445e26cbf784cdba10f2b6c3e2cd3ee7bab360a", "tree": "8c8c377a7e5cbf608d730ec45e091e4f2b826a82", "parents": [ "020f46a39eb7b99a575b9f4d105fce2b142acdf1" ], "author": { "name": "David S. Miller", "email": "davem@davemloft.net", "time": "Mon Jun 27 15:42:04 2005 -0700" }, "committer": { "name": "David S. Miller", "email": "davem@davemloft.net", "time": "Mon Jun 27 15:42:04 2005 -0700" }, "message": "[SPARC64]: Avoid membar instructions in delay slots.\n\nIn particular, avoid membar instructions in the delay\nslot of a jmpl instruction.\n\nUltraSPARC-I, II, IIi, and IIe have a bug, documented in\nthe UltraSPARC-IIi User\u0027s Manual, Appendix K, Erratum 51\n\nThe long and short of it is that if the IMU unit misses\non a branch or jmpl, and there is a store buffer synchronizing\nmembar in the delay slot, the chip can stop fetching instructions.\n\nIf interrupts are enabled or some other trap is enabled, the\nchip will unwedge itself, but performance will suffer.\n\nWe already had a workaround for this bug in a few spots, but\nit\u0027s better to have the entire tree sanitized for this rule.\n\nSigned-off-by: David S. Miller \u003cdavem@davemloft.net\u003e\n" }, { "commit": "9a59c1860d01b3dea9ab01d5cefb9d5c52042e6d", "tree": "be41af760482e2bc17e23d465edd0f98adc8d464", "parents": [ "24dc6ead53f8fcae4b1908c4ea3fea75ee844a6d" ], "author": { "name": "David S. Miller", "email": "davem@sunset.davemloft.net", "time": "Sun Apr 24 21:04:02 2005 -0700" }, "committer": { "name": "David S. Miller", "email": "davem@sunset.davemloft.net", "time": "Sun Apr 24 21:04:02 2005 -0700" }, "message": "[SPARC64]: Fix SMP build.\n\nKill build failures in the SMP+!PREEMPT case introduced\nby Al Viro\u0027s spinlock.h changes.\n\nSigned-off-by: David S. Miller \u003cdavem@davemloft.net\u003e\n" }, { "commit": "489ec5f5d59b306e4ccc505eac417526adedb438", "tree": "506d4be0182ca0a434c70e1267087646644a0e69", "parents": [ "4d78b6c78ae6d87e4c1c8072f42efa716f04afb9" ], "author": { "name": "Al Viro", "email": "viro@parcelfarce.linux.theplanet.co.uk", "time": "Wed Apr 20 17:12:41 2005 -0700" }, "committer": { "name": "David S. Miller", "email": "davem@sunset.davemloft.net", "time": "Wed Apr 20 17:12:41 2005 -0700" }, "message": "[SPARC64]: sparc64 preempt + smp\n\nPREEMPT+SMP support - see if it looks sane...\n\nSigned-off-by: Al Viro \u003cviro@parcelfarce.linux.theplanet.co.uk\u003e\nSigned-off-by: David S. Miller \u003cdavem@davemloft.net\u003e\n" }, { "commit": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "tree": "0bba044c4ce775e45a88a51686b5d9f90697ea9d", "parents": [], "author": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Sat Apr 16 15:20:36 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Sat Apr 16 15:20:36 2005 -0700" }, "message": "Linux-2.6.12-rc2\n\nInitial git repository build. I\u0027m not bothering with the full history,\neven though we have it. We can create a separate \"historical\" git\narchive of that later if we want to, and in the meantime it\u0027s about\n3.2GB when imported into git - space that would just make the early\ngit days unnecessarily complicated, when we don\u0027t have a lot of good\ninfrastructure for it.\n\nLet it rip!\n" } ] }