)]}' { "log": [ { "commit": "7a39f52202a70ff6834e37053e2ee55c7d351621", "tree": "de2f029495110336d2dd2b89205db2c62710dd50", "parents": [ "6d24c8dc2e656b02807aa0506405727d34c0376c" ], "author": { "name": "Al Viro", "email": "viro@ftp.linux.org.uk", "time": "Sun Oct 08 14:32:15 2006 +0100" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun Oct 08 12:32:35 2006 -0700" }, "message": "[PATCH] sparc32 rwlock fix\n\nread_trylock() is broken on sparc32 (doesn\u0027t build and didn\u0027t work\nright, actually). Proposed fix:\n\n - make \"writer holds lock\" distinguishable from \"reader tries to grab\n lock\"\n\n - have __raw_read_trylock() try to acquire the mutex (in LSB of lock),\n terminating spin if we see that there\u0027s writer holding it. Then do\n the rest as we do in read_lock().\n\nThanks to Ingo for discussion...\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "ef6edc9746dc2bfdacf44eefd5f881179971c478", "tree": "e8670e918a852978b2e93e189936f327be072284", "parents": [ "e3e5fc91d9828a9b94a3992de47d47d2d2e34ec6" ], "author": { "name": "Martin Schwidefsky", "email": "schwidefsky@de.ibm.com", "time": "Sat Sep 30 23:27:43 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun Oct 01 00:39:21 2006 -0700" }, "message": "[PATCH] Directed yield: cpu_relax variants for spinlocks and rw-locks\n\nOn systems running with virtual cpus there is optimization potential in\nregard to spinlocks and rw-locks. If the virtual cpu that has taken a lock\nis known to a cpu that wants to acquire the same lock it is beneficial to\nyield the timeslice of the virtual cpu in favour of the cpu that has the\nlock (directed yield).\n\nWith CONFIG_PREEMPT\u003d\"n\" this can be implemented by the architecture without\ncommon code changes. Powerpc already does this.\n\nWith CONFIG_PREEMPT\u003d\"y\" the lock loops are coded with _raw_spin_trylock,\n_raw_read_trylock and _raw_write_trylock in kernel/spinlock.c. If the lock\ncould not be taken cpu_relax is called. A directed yield is not possible\nbecause cpu_relax doesn\u0027t know anything about the lock. To be able to\nyield the lock in favour of the current lock holder variants of cpu_relax\nfor spinlocks and rw-locks are needed. The new _raw_spin_relax,\n_raw_read_relax and _raw_write_relax primitives differ from cpu_relax\ninsofar that they have an argument: a pointer to the lock structure.\n\nSigned-off-by: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Haavard Skinnemoen \u003chskinnemoen@atmel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "61fc12d8e5c94176e7c2e04a2eab4c6e36d8dd41", "tree": "d58e41a70395f3638435ba9f09c4bf5fa994a38f", "parents": [ "7202fb496af235506a3c6fea836fe4c9957f730e" ], "author": { "name": "Bob Breuer", "email": "breuerr@mc.net", "time": "Tue Jun 20 00:35:13 2006 -0700" }, "committer": { "name": "David S. Miller", "email": "davem@davemloft.net", "time": "Tue Jun 20 00:35:13 2006 -0700" }, "message": "[SPARC]: Add missing rw can_lock macros\n\nFix a link failure by adding the missing can_lock macros for the rw\nlocks.\n\nSigned-off-by: Bob Breuer \u003cbreuerr@mc.net\u003e\nSigned-off-by: David S. Miller \u003cdavem@davemloft.net\u003e\n" }, { "commit": "a54123e27779049d27d21e6c8adfee73aa2c0734", "tree": "265849e706e4ebe3b75127ebe6e3cbfe2a78850a", "parents": [ "674a396c6d2ba0341ebdd7c1c9950f32f018e2dd" ], "author": { "name": "Bob Breuer", "email": "breuerr@mc.net", "time": "Thu Mar 23 22:36:19 2006 -0800" }, "committer": { "name": "David S. Miller", "email": "davem@davemloft.net", "time": "Thu Mar 23 22:36:19 2006 -0800" }, "message": "[SPARC]: Try to start getting SMP back into shape.\n\nTodo items:\n - IRQ_INPROGRESS flag - use sparc64 irq buckets, or generic irq_desc?\n - sun4d\n - re-indent large chunks of sun4m_smp.c\n - some places assume sequential cpu numbering (i.e. 0,1 instead of 0,2)\n\nLast I checked (with 2.6.14), random programs segfault with dual\nHyperSPARC. And with SuperSPARC II\u0027s, it seems stable but will\neventually die from a write lock error (wrong lock owner or something).\n\nI haven\u0027t tried the HyperSPARC + highmem combination recently, so that\nmay still be a problem.\n\nSigned-off-by: David S. Miller \u003cdavem@davemloft.net\u003e\n" }, { "commit": "3115624eda34d0f4e673fc6bcea36b7ad701ee33", "tree": "a81c9e0f3d84a96725e109452d4ddc90f95b513a", "parents": [ "ed39f731ab2e77e58122232f6e27333331d7793d" ], "author": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Mon Oct 03 17:37:02 2005 -0700" }, "committer": { "name": "David S. Miller", "email": "davem@davemloft.net", "time": "Mon Oct 03 17:37:02 2005 -0700" }, "message": "[SPARC]: \"extern inline\" doesn\u0027t make much sense.\n\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nSigned-off-by: David S. Miller \u003cdavem@davemloft.net\u003e\n" }, { "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": "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" } ] }