)]}' { "log": [ { "commit": "9c1721aa4994f6625decbd915241f3a94ee2fe67", "tree": "bc1c2d623ac5d0db82df18163f6ab029e057c558", "parents": [ "9828ea9d75c38fe3dce05d00566eed61c85732e6" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Thu Dec 03 21:52:18 2009 +0100" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Mon Dec 14 23:55:33 2009 +0100" }, "message": "locking: Cleanup the name space completely\n\nMake the name space hierarchy of locking functions consistent:\n raw_spin* -\u003e _raw_spin* -\u003e __raw_spin*\n\nNo functional change.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nAcked-by: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n\n" }, { "commit": "9828ea9d75c38fe3dce05d00566eed61c85732e6", "tree": "6cee5c8ffb07cdf45cc12d58f74a3053ffefcb5f", "parents": [ "5f6384c5fb6bfc9aac506e058974d3ba293951b3" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Thu Dec 03 20:55:53 2009 +0100" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Mon Dec 14 23:55:33 2009 +0100" }, "message": "locking: Further name space cleanups\n\nThe name space hierarchy for the internal lock functions is now a bit\nbackwards. raw_spin* functions map to _spin* which use __spin*, while\nwe would like to have _raw_spin* and __raw_spin*.\n\n_raw_spin* is already used by lock debugging, so rename those funtions\nto do_raw_spin* to free up the _raw_spin* name space.\n\nNo functional change.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nAcked-by: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "c2f21ce2e31286a0a32f8da0a7856e9ca1122ef3", "tree": "6cc8d1fd37ffa6d02481353857b92734241f4dd0", "parents": [ "e5931943d02bf751b1ec849c0d2ade23d76a8d41" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Wed Dec 02 20:02:59 2009 +0100" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Mon Dec 14 23:55:32 2009 +0100" }, "message": "locking: Implement new raw_spinlock\n\nNow that the raw_spin name space is freed up, we can implement\nraw_spinlock and the related functions which are used to annotate the\nlocks which are not converted to sleeping spinlocks in preempt-rt.\n\nA side effect is that only such locks can be used with the low level\nlock fsunctions which circumvent lockdep.\n\nFor !rt spin_* functions are mapped to the raw_spin* implementations.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nAcked-by: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n\n" }, { "commit": "0199c4e68d1f02894bdefe4b5d9e9ee4aedd8d62", "tree": "e371d17bd73d64332349debbf45962ec67e7269d", "parents": [ "edc35bd72e2079b25f99c5da7d7a65dbbffc4a26" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Wed Dec 02 20:01:25 2009 +0100" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Mon Dec 14 23:55:32 2009 +0100" }, "message": "locking: Convert __raw_spin* functions to arch_spin*\n\nName space cleanup. No functional change.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nAcked-by: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nAcked-by: David S. Miller \u003cdavem@davemloft.net\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: linux-arch@vger.kernel.org\n" }, { "commit": "b7b40ade58e621851896aa261452df99d4e9d99b", "tree": "6ff6d2adea28376b86875cd070fbea6d4473d029", "parents": [ "3ea6b3d0e6d0ffd91c0f8cadeb69b7133c038b32" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Mon Nov 09 21:01:59 2009 +0100" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Mon Dec 14 23:55:32 2009 +0100" }, "message": "locking: Reorder functions in spinlock.c\n\nSeparate spin_lock and rw_lock functions. Preempt-RT needs to exclude\nthe rw_lock functions from being compiled. The reordering allows to do\nthat with a single #ifdef.\n\nNo functional change.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nAcked-by: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "8e13c7b772387f55dc05c6a0e5b30010c3c46ff9", "tree": "7cfa275b95febce0cf29c5c8faf2bc7566305265", "parents": [ "6beb000923882f6204ea2cfcd932e568e900803f" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Mon Nov 09 15:21:41 2009 +0000" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri Nov 13 20:53:28 2009 +0100" }, "message": "locking: Reduce ifdefs in kernel/spinlock.c\n\nWith the Kconfig based inline decisions we can remove extra ifdefs in\nkernel/spinlock.c by creating the complex lockbreak functions as\ninlines which are inserted into the non inlined lock functions.\n\nNo functional change.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nLKML-Reference: \u003c20091109151428.548614772@linutronix.de\u003e\nAcked-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nReviewed-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\n" }, { "commit": "6beb000923882f6204ea2cfcd932e568e900803f", "tree": "1849bb1e7493bbf5e538d74cec18c6d6f4b16ced", "parents": [ "156171c71a0dc4bce12b4408bb1591f8fe32dc1a" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Mon Nov 09 15:21:34 2009 +0000" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri Nov 13 20:53:28 2009 +0100" }, "message": "locking: Make inlining decision Kconfig based\n\ncommit 892a7c67 (locking: Allow arch-inlined spinlocks) implements the\nselection of which lock functions are inlined based on defines in\narch/.../spinlock.h: #define __always_inline__LOCK_FUNCTION\n\nDespite of the name __always_inline__* the lock functions can be built\nout of line depending on config options. Also if the arch does not set\nsome inline defines the generic code might set them; again depending on\nconfig options.\n\nThis makes it unnecessary hard to figure out when and which lock\nfunctions are inlined. Aside of that it makes it way harder and\nmessier for -rt to manipulate the lock functions.\n\nConvert the inlining decision to CONFIG switches. Each lock function\nis inlined depending on CONFIG_INLINE_*. The configs implement the\nexisting dependencies. The architecture code can select ARCH_INLINE_*\nto signal that it wants the corresponding lock function inlined.\nARCH_INLINE_* is necessary as Kconfig ignores \"depends on\"\nrestrictions when a config element is selected.\n\nNo functional change.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nLKML-Reference: \u003c20091109151428.504477141@linutronix.de\u003e\nAcked-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nReviewed-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\n" }, { "commit": "892a7c67c12da63fa4b51728bbe5b982356a090a", "tree": "ba6cb9cf1be394428d9ef2596b0575e28ab0b19a", "parents": [ "69d0ee7377eef808e34ba5542b554ec97244b871" ], "author": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Mon Aug 31 14:43:37 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Aug 31 18:08:50 2009 +0200" }, "message": "locking: Allow arch-inlined spinlocks\n\nThis allows an architecture to specify per lock variant if the\nlocking code should be kept out-of-line or inlined.\n\nIf an architecure wants out-of-line locking code no change is\nneeded. To force inlining of e.g. spin_lock() the line:\n\n #define __always_inline__spin_lock\n\nneeds to be added to arch/\u003c...\u003e/include/asm/spinlock.h\n\nIf CONFIG_DEBUG_SPINLOCK or CONFIG_GENERIC_LOCKBREAK are\ndefined the per architecture defines are (partly) ignored and\nstill out-of-line spinlock code will be generated.\n\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Arnd Bergmann \u003carnd@arndb.de\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: Horst Hartmann \u003chorsth@linux.vnet.ibm.com\u003e\nCc: Christian Ehrhardt \u003cehrhardt@linux.vnet.ibm.com\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\nCc: David Miller \u003cdavem@davemloft.net\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Geert Uytterhoeven \u003cgeert@linux-m68k.org\u003e\nCc: Roman Zippel \u003czippel@linux-m68k.org\u003e\nCc: \u003clinux-arch@vger.kernel.org\u003e\nLKML-Reference: \u003c20090831124418.375299024@de.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "69d0ee7377eef808e34ba5542b554ec97244b871", "tree": "f46c756b897cf51497fda2ad22f9f12a3512e23b", "parents": [ "0ee000e5e8fa2e5c760250be0d78d5906e3eb94b" ], "author": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Mon Aug 31 14:43:36 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Aug 31 18:08:50 2009 +0200" }, "message": "locking: Move spinlock function bodies to header file\n\nMove spinlock function bodies to header file by creating a\nstatic inline version of each variant. Use the inline version\non the out-of-line code.\n\nThis shouldn\u0027t make any difference besides that the spinlock\ncode can now be used to generate inlined spinlock code.\n\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nAcked-by: Arnd Bergmann \u003carnd@arndb.de\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: Horst Hartmann \u003chorsth@linux.vnet.ibm.com\u003e\nCc: Christian Ehrhardt \u003cehrhardt@linux.vnet.ibm.com\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\nCc: David Miller \u003cdavem@davemloft.net\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Geert Uytterhoeven \u003cgeert@linux-m68k.org\u003e\nCc: Roman Zippel \u003czippel@linux-m68k.org\u003e\nCc: \u003clinux-arch@vger.kernel.org\u003e\nLKML-Reference: \u003c20090831124417.859022429@de.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "f5f7eac41db827a47b2163330eecd7bb55ae9f12", "tree": "ae8ab45dba49c1b3d5f2088051389e6fd3e4a24c", "parents": [ "e8c158bb313c1df421eab7dc4299cd39cbbf5895" ], "author": { "name": "Robin Holt", "email": "holt@sgi.com", "time": "Thu Apr 02 16:59:46 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Apr 02 19:05:11 2009 -0700" }, "message": "Allow rwlocks to re-enable interrupts\n\nPass the original flags to rwlock arch-code, so that it can re-enable\ninterrupts if implemented for that architecture.\n\nInitially, make __raw_read_lock_flags and __raw_write_lock_flags stubs\nwhich just do the same thing as non-flags variants.\n\nSigned-off-by: Petr Tesarik \u003cptesarik@suse.cz\u003e\nSigned-off-by: Robin Holt \u003cholt@sgi.com\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: \u003clinux-arch@vger.kernel.org\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e8c158bb313c1df421eab7dc4299cd39cbbf5895", "tree": "8a5f1d01e58d0e358b2b0c9407fc494912e83c27", "parents": [ "41d577aa35aa0504fe28b76a948908bdb7fbec81" ], "author": { "name": "Robin Holt", "email": "holt@sgi.com", "time": "Thu Apr 02 16:59:45 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Apr 02 19:05:10 2009 -0700" }, "message": "Factor out #ifdefs from kernel/spinlock.c to LOCK_CONTENDED_FLAGS\n\nSGI has observed that on large systems, interrupts are not serviced for a\nlong period of time when waiting for a rwlock. The following patch series\nre-enables irqs while waiting for the lock, resembling the code which is\nalready there for spinlocks.\n\nI only made the ia64 version, because the patch adds some overhead to the\nfast path. I assume there is currently no demand to have this for other\narchitectures, because the systems are not so large. Of course, the\npossibility to implement raw_{read|write}_lock_flags for any architecture\nis still there.\n\nThis patch:\n\nThe new macro LOCK_CONTENDED_FLAGS expands to the correct implementation\ndepending on the config options, so that IRQ\u0027s are re-enabled when\npossible, but they remain disabled if CONFIG_LOCKDEP is set.\n\nSigned-off-by: Petr Tesarik \u003cptesarik@suse.cz\u003e\nSigned-off-by: Robin Holt \u003cholt@sgi.com\u003e\nCc: \u003clinux-arch@vger.kernel.org\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c72f4573a5e05e35a31474977f500cbe21dcbb11", "tree": "c26be2f19d5916acaef43ff499382ea1ca0f198f", "parents": [ "73909f7a665991013dcff42a815fda76d3a7300a" ], "author": { "name": "Andrew Morton", "email": "akpm@linux-foundation.org", "time": "Tue Aug 12 13:27:37 2008 -0700" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Aug 13 13:56:51 2008 +0200" }, "message": "lockdep: spin_lock_nest_lock(), checkpatch fixes\n\nfix:\n\n WARNING: EXPORT_SYMBOL(foo); should immediately follow its function/variable\n #46: FILE: kernel/spinlock.c:326:\n +EXPORT_SYMBOL(_spin_lock_nest_lock);\n\ntotal: 0 errors, 1 warnings, 26 lines checked\n\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "b7d39aff91454f2534db2275f55908656ec0470c", "tree": "24481f2fe7206ef69800a33df6ac3e1716085326", "parents": [ "7531e2f34d1d551b096143f19111139f0dd84c8b" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Mon Aug 11 09:30:24 2008 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Aug 11 09:30:24 2008 +0200" }, "message": "lockdep: spin_lock_nest_lock()\n\nExpose the new lock protection lock.\n\nThis can be used to annotate places where we take multiple locks of the\nsame class and avoid deadlocks by always taking another (top-level) lock\nfirst.\n\nNOTE: we\u0027re still bound to the MAX_LOCK_DEPTH (48) limit.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "0764d23cf066c52de42b653144605b481d3fbdbc", "tree": "940c6fb3f1fd674bdabbebc21a15b48a48e2ec24", "parents": [ "361943ad0ba3f16e66859e30a408915e008ba91e" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon May 12 21:20:44 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:39:40 2008 +0200" }, "message": "ftrace: lockdep notrace annotations\n\nAdd notrace annotations to lockdep to keep ftrace from causing\nrecursive problems with lock tracing and debugging.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "95c354fe9f7d6decc08a92aa26eb233ecc2155bf", "tree": "ec9267032ea875e84216cfb20acb2cfc7c62149f", "parents": [ "a95d67f87e1a5f1b4429be3ba3bf7b4051657908" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Wed Jan 30 13:31:20 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jan 30 13:31:20 2008 +0100" }, "message": "spinlock: lockbreak cleanup\n\nThe break_lock data structure and code for spinlocks is quite nasty.\nNot only does it double the size of a spinlock but it changes locking to\na potentially less optimal trylock.\n\nPut all of that under CONFIG_GENERIC_LOCKBREAK, and introduce a\n__raw_spin_is_contended that uses the lock data itself to determine whether\nthere are waiters on the lock, to be used if CONFIG_GENERIC_LOCKBREAK is\nnot set.\n\nRename need_lockbreak to spin_needbreak, make it use spin_is_contended to\ndecouple it from the spinlock implementation, and make it typesafe (rwlocks\ndo not have any need_lockbreak sites -- why do they even get bloated up\nwith that break_lock then?).\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "4fe87745a6722d42ff27a60768c77958fa1fc498", "tree": "adb116303fda951e0f7fc997db5de683e1bd8527", "parents": [ "c46261de0d98372112d8edf16f74ce418a268d46" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Thu Jul 19 01:48:58 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:49 2007 -0700" }, "message": "lockstat: hook into spinlock_t, rwlock_t, rwsem and mutex\n\nCall the new lockstat tracking functions from the various lock primitives.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nAcked-by: Jason Baron \u003cjbaron@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": "ca58abcb4a6d52ee2db1b1130cea3ca2a76677b9", "tree": "ad35a81d318a39cb33f28fe09c4374ec90b118ed", "parents": [ "21f8ca3bf6198bd21e3c4cc820af2ccf753a6ec8" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Thu Jul 19 01:48:53 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:49 2007 -0700" }, "message": "lockdep: sanitise CONFIG_PROVE_LOCKING\n\nEnsure that all of the lock dependency tracking code is under\nCONFIG_PROVE_LOCKING. This allows us to use the held lock tracking code for\nother purposes.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nAcked-by: Jason Baron \u003cjbaron@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": "cfd3ef2346f924d6c0e82236c20fdb3a8840136a", "tree": "f0289367f0dbf80a5bcfa2969f428c605c54dd6a", "parents": [ "ee3ce191e8eaa4cc15c51a28b34143b36404c4f5" ], "author": { "name": "Arjan van de Ven", "email": "arjan@linux.intel.com", "time": "Sat Nov 25 11:09:37 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Sat Nov 25 13:28:34 2006 -0800" }, "message": "[PATCH] lockdep: spin_lock_irqsave_nested()\n\nIntroduce spin_lock_irqsave_nested(); implementation from:\n http://lkml.org/lkml/2006/6/1/122\nPatch from:\n http://lkml.org/lkml/2006/9/13/258\n\n[akpm@osdl.org: two compile fixes]\nSigned-off-by: Arjan van de Ven \u003carjan@linux.intel.com\u003e\nSigned-off-by: Jiri Kosina \u003cjikos@jikos.cz\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\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": "910067d188d56d80801b71b0ca1f73aa400c7b8c", "tree": "5176ec3f62544cb4d8c3ff33c00d75c877856a17", "parents": [ "e04da1dfd9041e306cb33d1b40b6005c23c5b325" ], "author": { "name": "Matthew Wilcox", "email": "matthew@wil.cx", "time": "Fri Sep 29 01:58:36 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Sep 29 09:18:03 2006 -0700" }, "message": "[PATCH] remove generic__raw_read_trylock()\n\nIf the cpu has the lock held for write, is interrupted, and the interrupt\nhandler calls read_trylock(), it\u0027s an instant deadlock.\n\nNow, Dave Miller has subsequently pointed out that we don\u0027t have any\nsituations where this can occur. Nevertheless, we should delete\ngeneric__raw_read_lock (and its associated EXPORT to make Arjan happy) so that\nnobody thinks they can use it.\n\nAcked-by: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "0cb91a2293648507886563ccb91979cfc94d6a4b", "tree": "f2a994f8b874e3c81c5519d445a0c5fa5522e4b5", "parents": [ "c16b63e09d9d03158e0a92e961234e94c4862620" ], "author": { "name": "Andi Kleen", "email": "ak@suse.de", "time": "Tue Sep 26 10:52:28 2006 +0200" }, "committer": { "name": "Andi Kleen", "email": "andi@basil.nowhere.org", "time": "Tue Sep 26 10:52:28 2006 +0200" }, "message": "[PATCH] i386: Account spinlocks to the caller during profiling for !FP kernels\n\nThis ports the algorithm from x86-64 (with improvements) to i386.\nPreviously this only worked for frame pointer enabled kernels.\nBut spinlocks have a very simple stack frame that can be manually\nanalyzed. Do this.\n\nSigned-off-by: Andi Kleen \u003cak@suse.de\u003e\n" }, { "commit": "fc47e7b592dc45b03c27b0a4c8f2d215dae9944d", "tree": "54ea55d491e2f708bc23655041668e19da3de619", "parents": [ "c336923b668fdcf0312efbec3b44895d713f4d81" ], "author": { "name": "Jarek Poplawski", "email": "jarkao2@o2.pl", "time": "Wed Sep 06 00:03:39 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Sep 06 11:00:01 2006 -0700" }, "message": "[PATCH] lockdep ifdef fix\n\nWith\n\n\tCONFIG_SMP\u003dy\n\tCONFIG_PREEMPT\u003dy\n\tCONFIG_LOCKDEP\u003dy\n\tCONFIG_DEBUG_LOCK_ALLOC\u003dy\n\t# CONFIG_PROVE_LOCKING is not set\n\nspin_unlock_irqrestore() goes through lockdep but spin_lock_irqsave() doesn\u0027t.\nApparently, bad things happen.\n\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "8a25d5debff2daee280e83e09d8c25d67c26a972", "tree": "3bccfef9acb66fc62863bfd6c16493c5e8c8e394", "parents": [ "4ea2176dfa714882e88180b474e4cbcd888b70af" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 03 00:24:54 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Jul 03 15:27:04 2006 -0700" }, "message": "[PATCH] lockdep: prove spinlock rwlock locking correctness\n\nUse the lock validator framework to prove spinlock and rwlock locking\ncorrectness.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Arjan van de Ven \u003carjan@linux.intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "6ab3d5624e172c553004ecc862bfeac16d9d68b7", "tree": "6d98881fe91fd9583c109208d5c27131b93fa248", "parents": [ "e02169b682bc448ccdc819dc8639ed34a23cedd8" ], "author": { "name": "Jörn Engel", "email": "joern@wohnheim.fh-wedel.de", "time": "Fri Jun 30 19:25:36 2006 +0200" }, "committer": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Fri Jun 30 19:25:36 2006 +0200" }, "message": "Remove obsolete #include \u003clinux/config.h\u003e\n\nSigned-off-by: Jörn Engel \u003cjoern@wohnheim.fh-wedel.de\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\n" }, { "commit": "ee25e96fcd78837c9f192aa655ce12a88bfd63d4", "tree": "e244e0903bd9583b5c0e6df5e46867427641e131", "parents": [ "eb8782ef72758b8700963ef8b949f5c812e6d630" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Thu Mar 23 03:00:58 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Thu Mar 23 07:38:16 2006 -0800" }, "message": "[PATCH] BUILD_LOCK_OPS: cleanup preempt_disable() usage\n\nThis patch changes the code from:\n\n\tpreempt_disable();\n\tfor (;;) {\n\t\t...\n\t\tpreempt_disable();\n\t}\nto:\n\tfor (;;) {\n\t\tpreempt_disable();\n\t\t...\n\t}\n\nwhich seems more clean to me and saves a couple of bytes for\neach function.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\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": "10f02d1c59e55f529140dda3a92f0099d748451c", "tree": "6b5a5804503401624171aff65b09ff022a9f0103", "parents": [ "9636273dae265b9354b861b373cd43cd76a6d0fe" ], "author": { "name": "Samuel Thibault", "email": "samuel.thibault@labri.fr", "time": "Sat May 21 17:50:15 2005 +0200" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Sat May 21 10:46:48 2005 -0700" }, "message": "[PATCH] spin_unlock_bh() and preempt_check_resched()\n\nIn _spin_unlock_bh(lock):\n\tdo { \\\n\t\t_raw_spin_unlock(lock); \\\n\t\tpreempt_enable(); \\\n\t\tlocal_bh_enable(); \\\n\t\t__release(lock); \\\n\t} while (0)\n\nthere is no reason for using preempt_enable() instead of a simple\npreempt_enable_no_resched()\n\nSince we know bottom halves are disabled, preempt_schedule() will always\nreturn at once (preempt_count!\u003d0), and hence preempt_check_resched() is\nuseless here...\n\nThis fixes it by using \"preempt_enable_no_resched()\" instead of the\n\"preempt_enable()\", and thus avoids the useless preempt_check_resched()\njust before re-enabling bottom halves.\n\nSigned-off-by: Samuel Thibault \u003csamuel.thibault@ens-lyon.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" } ] }