)]}' { "log": [ { "commit": "0b4a8a789a328af6aac613734c362cf6aad72201", "tree": "e2488a7e4767dd1d25f4691b12fde86041404982", "parents": [ "3171a0305d62e6627a24bff35af4f997e4988a80" ], "author": { "name": "Roland McGrath", "email": "roland@redhat.com", "time": "Fri Sep 29 02:00:39 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Sep 29 09:18:15 2006 -0700" }, "message": "[PATCH] kexec warning fix\n\nThis fixes a couple of compiler warnings, and adds paranoia checks as well.\n\nSigned-off-by: Roland McGrath \u003croland@redhat.com\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "f400e198b2ed26ce55b22a1412ded0896e7516ac", "tree": "a3d78bfc1c20635e199fe0fe85aaa1d8792acc58", "parents": [ "959ed340f4867fda7684340625f60e211c2296d6" ], "author": { "name": "Sukadev Bhattiprolu", "email": "sukadev@us.ibm.com", "time": "Fri Sep 29 02:00:07 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Sep 29 09:18:12 2006 -0700" }, "message": "[PATCH] pidspace: is_init()\n\nThis is an updated version of Eric Biederman\u0027s is_init() patch.\n(http://lkml.org/lkml/2006/2/6/280). It applies cleanly to 2.6.18-rc3 and\nreplaces a few more instances of -\u003epid \u003d\u003d 1 with is_init().\n\nFurther, is_init() checks pid and thus removes dependency on Eric\u0027s other\npatches for now.\n\nEric\u0027s original description:\n\n\tThere are a lot of places in the kernel where we test for init\n\tbecause we give it special properties. Most significantly init\n\tmust not die. This results in code all over the kernel test\n\t-\u003epid \u003d\u003d 1.\n\n\tIntroduce is_init to capture this case.\n\n\tWith multiple pid spaces for all of the cases affected we are\n\tlooking for only the first process on the system, not some other\n\tprocess that has pid \u003d\u003d 1.\n\nSigned-off-by: Eric W. Biederman \u003cebiederm@xmission.com\u003e\nSigned-off-by: Sukadev Bhattiprolu \u003csukadev@us.ibm.com\u003e\nCc: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nCc: Serge Hallyn \u003cserue@us.ibm.com\u003e\nCc: Cedric Le Goater \u003cclg@fr.ibm.com\u003e\nCc: \u003clxc-devel@lists.sourceforge.net\u003e\nAcked-by: Paul Mackerras \u003cpaulus@samba.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "c0ce7d0886cf0c2579c604eac41a7e125bc0e96d", "tree": "f31448371b4295e98753f1551178fdddb8d18b0e", "parents": [ "2cd90bc8fba8720ef7f3fdfd1e0c1a5397a18271" ], "author": { "name": "David Wilder", "email": "dwilder@us.ibm.com", "time": "Fri Jun 23 15:29:34 2006 -0700" }, "committer": { "name": "Paul Mackerras", "email": "paulus@samba.org", "time": "Wed Jun 28 15:18:52 2006 +1000" }, "message": "[POWERPC] Add the use of the firmware soft-reset-nmi to kdump.\n\nWith this patch, kdump uses the firmware soft-reset NMI for two purposes:\n1) Initiate the kdump (take a crash dump) by issuing a soft-reset.\n2) Break a CPU out of a deadlock condition that is detected during kdump\nprocessing.\n\nWhen a soft-reset is initiated each CPU will enter\nsystem_reset_exception() and set its corresponding bit in the global\nbit-array cpus_in_sr then call die(). When die() finds the CPU\u0027s bit set\nin cpu_in_sr crash_kexec() is called to initiate a crash dump. The first\nCPU to enter crash_kexec() is called the \"crashing CPU\". All other CPUs\nare \"secondary CPUs\". The secondary CPU\u0027s pass through to\ncrash_kexec_secondary() and sleep. The crashing CPU waits for all CPUs\nto enter via soft-reset then boots the kdump kernel (see\ncrash_soft_reset_check())\n\nWhen the system crashes due to a panic or exception, crash_kexec() is\ncalled by panic() or die(). The crashing CPU sends an IPI to all other\nCPUs to notify them of the pending shutdown. If a CPU is in a deadlock\nor hung state with interrupts disabled, the IPI will not be delivered.\nThe result being, that the kdump kernel is not booted. This problem is\nsolved with the use of a firmware generated soft-reset. After the\ncrashing_cpu has issued the IPI, it waits for 10 sec for all CPUs to\nenter crash_ipi_callback(). A CPU signifies its entry to\ncrash_ipi_callback() by setting its corresponding bit in the\ncpus_in_crash bit array. After 10 sec, if one or more CPUs have not set\ntheir bit in cpus_in_crash we assume that the CPU(s) is deadlocked. The\noperator is then prompted to generate a soft-reset to break the\ndeadlock. Each CPU enters the soft reset handler as described above.\n\nTwo conditions must be handled at this point:\n1) The system crashed because the operator generated a soft-reset. See\n2) The system had crashed before the soft-reset was generated ( in the\ncase of a Panic or oops).\n\nThe first CPU to enter crash_kexec() uses the state of the kexec_lock to\ndetermine this state. If kexec_lock is already held then condition 2 is\ntrue and crash_kexec_secondary() is called, else; this CPU is flagged as\nthe crashing CPU, the kexec_lock is acquired and crash_kexec() proceeds\nas described above.\n\nEach additional CPUs responding to the soft-reset will pass through\ncrash_kexec() to kexec_secondary(). All secondary CPUs call\ncrash_ipi_callback() readying them self\u0027s for the shutdown. When ready\nthey clear their bit in cpus_in_sr. The crashing CPU waits in\nkexec_secondary() until all other CPUs have cleared their bits in\ncpus_in_sr. The kexec kernel boot is then started.\n\nSigned-off-by: Haren Myneni \u003charen@us.ibm.com\u003e\nSigned-off-by: David Wilder \u003cdwilder@us.ibm.com\u003e\nSigned-off-by: Paul Mackerras \u003cpaulus@samba.org\u003e\n" }, { "commit": "c330dda908b5a46469a997eea90b66f2f9f02b34", "tree": "aad52aa4e127c366ca185c2122650d7dbb3437a0", "parents": [ "24bbb1faf3f0420eb252dd0fdc1e477b1d4d73bd" ], "author": { "name": "Jeff Moyer", "email": "jmoyer@redhat.com", "time": "Fri Jun 23 02:05:07 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 23 07:43:02 2006 -0700" }, "message": "[PATCH] Add a sysfs file to determine if a kexec kernel is loaded\n\nCreate two files in /sys/kernel, kexec_loaded and kexec_crash_loaded. Each\nfile contains a simple boolean value indicating whether the relevant kernel\nhas been loaded into memory. The motivation for this is geared around\nsupport.\n\nSigned-off-by: Jeff Moyer \u003cjmoyer@redhat.com\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "c59ede7b78db329949d9cdcd7064e22d357560ef", "tree": "f9dc9d464fdad5bfd464d983e77c1af031389dda", "parents": [ "e16885c5ad624a6efe1b1bf764e075d75f65a788" ], "author": { "name": "Randy.Dunlap", "email": "rdunlap@xenotime.net", "time": "Wed Jan 11 12:17:46 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Jan 11 18:42:13 2006 -0800" }, "message": "[PATCH] move capable() to capability.h\n\n- Move capable() from sched.h to capability.h;\n\n- Use \u003clinux/capability.h\u003e where capable() is used\n\t(in include/, block/, ipc/, kernel/, a few drivers/,\n\tmm/, security/, \u0026 sound/;\n\tmany more drivers/ to go)\n\nSigned-off-by: Randy Dunlap \u003crdunlap@xenotime.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "e996e58133c475bcf3a229f716b9457267cbaa0a", "tree": "9fd2f41d7e2c0deaca71a88a1b36d873ede3c7b8", "parents": [ "35ed319a36cdfd88fc3debe6ce24e756bc474cce" ], "author": { "name": "Vivek Goyal", "email": "vgoyal@in.ibm.com", "time": "Mon Jan 09 20:51:44 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Jan 10 08:01:27 2006 -0800" }, "message": "[PATCH] kdump: save registers early (inline functions)\n\n- If system panics then cpu register states are captured through funciton\n crash_get_current_regs(). This is not a inline function hence a stack frame\n is pushed on to the stack and then cpu register state is captured. Later\n this frame is popped and new frames are pushed (machine_kexec).\n\n- In theory this is not very right as we are capturing register states for a\n frame and that frame is no more valid. This seems to have created back\n trace problems for ppc64.\n\n- This patch fixes it up. The very first thing it does after entering\n crash_kexec() is to capture the register states. Anyway we don\u0027t want the\n back trace beyond crash_kexec(). crash_get_current_regs() has been made\n inline\n\n- crash_setup_regs() is the top architecture dependent function which should\n be responsible for capturing the register states as well as to do some\n architecture dependent tricks. For ex. fixing up ss and esp for i386.\n crash_setup_regs() has also been made inline to ensure no new call frame is\n pushed onto stack.\n\nSigned-off-by: Vivek Goyal \u003cvgoyal@in.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "cc57165874e938ef684d71ba7d36e7088b551489", "tree": "e1847f5547a7a426214e9ef0719eab908ee305d7", "parents": [ "82409411571ad89d271dc46f7fa26149fad9efdf" ], "author": { "name": "Vivek Goyal", "email": "vgoyal@in.ibm.com", "time": "Mon Jan 09 20:51:41 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Jan 10 08:01:26 2006 -0800" }, "message": "[PATCH] kdump: dynamic per cpu allocation of memory for saving cpu registers\n\n- In case of system crash, current state of cpu registers is saved in memory\n in elf note format. So far memory for storing elf notes was being allocated\n statically for NR_CPUS.\n\n- This patch introduces dynamic allocation of memory for storing elf notes.\n It uses alloc_percpu() interface. This should lead to better memory usage.\n\n- Introduced based on Andi Kleen\u0027s and Eric W. Biederman\u0027s suggestions.\n\n- This patch also moves memory allocation for elf notes from architecture\n dependent portion to architecture independent portion. Now crash_notes is\n architecture independent. The whole idea is that size of memory to be\n allocated per cpu (MAX_NOTE_BYTES) can be architecture dependent and\n allocation of this memory can be architecture independent.\n\nSigned-off-by: Vivek Goyal \u003cvgoyal@in.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "4c21e2f2441dc5fbb957b030333f5a3f2d02dea7", "tree": "1f76d33bb1d76221c6424bc5fed080a4f91349a6", "parents": [ "b38c6845b695141259019e2b7c0fe6c32a6e720d" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Sat Oct 29 18:16:40 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sat Oct 29 21:40:42 2005 -0700" }, "message": "[PATCH] mm: split page table lock\n\nChristoph Lameter demonstrated very poor scalability on the SGI 512-way, with\na many-threaded application which concurrently initializes different parts of\na large anonymous area.\n\nThis patch corrects that, by using a separate spinlock per page table page, to\nguard the page table entries in that page, instead of using the mm\u0027s single\npage_table_lock. (But even then, page_table_lock is still used to guard page\ntable allocation, and anon_vma allocation.)\n\nIn this implementation, the spinlock is tucked inside the struct page of the\npage table page: with a BUILD_BUG_ON in case it overflows - which it would in\nthe case of 32-bit PA-RISC with spinlock debugging enabled.\n\nSplitting the lock is not quite for free: another cacheline access. Ideally,\nI suppose we would use split ptlock only for multi-threaded processes on\nmulti-cpu machines; but deciding that dynamically would have its own costs.\nSo for now enable it by config, at some number of cpus - since the Kconfig\nlanguage doesn\u0027t support inequalities, let preprocessor compare that with\nNR_CPUS. But I don\u0027t think it\u0027s worth being user-configurable: for good\ntesting of both split and unsplit configs, split now at 4 cpus, and perhaps\nchange that to 8 later.\n\nThere is a benefit even for singly threaded processes: kswapd can be attacking\none part of the mm while another part is busy faulting.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "9796fdd829da626374458e8706daedcc0e432ddd", "tree": "a0b4af7f45267cdcdfb677c2167906c6ef981b76", "parents": [ "55016f10e31bb15b85d8c500f979dfdceb37d548" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Fri Oct 21 03:22:03 2005 -0400" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Oct 28 08:16:49 2005 -0700" }, "message": "[PATCH] gfp_t: kernel/*\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "314b6a4d80a7a5217c86ffdca926b6f406da0e0e", "tree": "f2a1b6a94511fb449ff35c7a3f6b1dc0f548335e", "parents": [ "97afa0a25afb43a82954662773a9d48d61b2996a" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@gmail.com", "time": "Mon Jun 27 22:29:33 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Tue Jun 28 14:53:40 2005 -0700" }, "message": "[PATCH] kexec: fix sparse warnings\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nCc: Eric Biederman \u003cebiederm@xmission.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "72414d3f1d22fc3e311b162fca95c430048d38ce", "tree": "46850947c1602357dd3c51d8d6ebaa5805507f9f", "parents": [ "4f339ecb30c759f94a29992d4635d9194132b6cf" ], "author": { "name": "Maneesh Soni", "email": "maneesh@in.ibm.com", "time": "Sat Jun 25 14:58:28 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Sat Jun 25 16:24:55 2005 -0700" }, "message": "[PATCH] kexec code cleanup\n\no Following patch provides purely cosmetic changes and corrects CodingStyle\n guide lines related certain issues like below in kexec related files\n\n o braces for one line \"if\" statements, \"for\" loops,\n o more than 80 column wide lines,\n o No space after \"while\", \"for\" and \"switch\" key words\n\no Changes:\n o take-2: Removed the extra tab before \"case\" key words.\n o take-3: Put operator at the end of line and space before \"*/\"\n\nSigned-off-by: Maneesh Soni \u003cmaneesh@in.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "6e274d144302068a00794ec22e73520c0615cb6f", "tree": "f7ea59ea47d3c5676fbac8d39e8deaa1f94146ae", "parents": [ "86b1ae38c0a62409dc862a28e3f08920f55f944b" ], "author": { "name": "Alexander Nyberg", "email": "alexn@telia.com", "time": "Sat Jun 25 14:58:26 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Sat Jun 25 16:24:54 2005 -0700" }, "message": "[PATCH] kdump: Use real pt_regs from exception\n\nMakes kexec_crashdump() take a pt_regs * as an argument. This allows to\nget exact register state at the point of the crash. If we come from direct\npanic assertion NULL will be passed and the current registers saved before\ncrashdump.\n\nThis hooks into two places:\ndie(): check the conditions under which we will panic when calling\ndo_exit and go there directly with the pt_regs that caused the fatal\nfault.\n\ndie_nmi(): If we receive an NMI lockup while in the kernel use the\npt_regs and go directly to crash_kexec(). We\u0027re probably nested up badly\nat this point so this might be the only chance to escape with proper\ninformation.\n\nSigned-off-by: Alexander Nyberg \u003calexn@telia.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "50cccc699ed849d31c9e3f7643db33edade20e4e", "tree": "7cd6e1adfa7b42a7be2815361e5d41c2fd89ee48", "parents": [ "dc009d92435f99498cbc579ce76bf28e837e2c14" ], "author": { "name": "Vivek Goyal", "email": "vgoyal@in.ibm.com", "time": "Sat Jun 25 14:57:55 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Sat Jun 25 16:24:48 2005 -0700" }, "message": "[PATCH] Kexec on panic vmlinux initrd fix\n\nThis is a minor bug fix in kexec to resolve the problem of loading panic\nkernel with initrd.\n\no Problem: Loading a capture kenrel fails if initrd is also being loaded.\n This has been observed for vmlinux image for kexec on panic case.\n\no This patch fixes the problem. In segment location and size verification\n logic, minor correction has been done. Segment memory end (mend) should be\n mstart + memsz - 1. This one byte offset was source of failure for initrd\n loading which was being loaded at hole boundary.\n\nSigned-off-by: Vivek Goyal \u003cvgoyal@in.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "dc009d92435f99498cbc579ce76bf28e837e2c14", "tree": "2ba8732b28225593d996b8faa079dc6ab4bbc9bc", "parents": [ "d0537508a9921efced238b20967e50e519ac34af" ], "author": { "name": "Eric W. Biederman", "email": "ebiederm@xmission.com", "time": "Sat Jun 25 14:57:52 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Sat Jun 25 16:24:48 2005 -0700" }, "message": "[PATCH] kexec: add kexec syscalls\n\nThis patch introduces the architecture independent implementation the\nsys_kexec_load, the compat_sys_kexec_load system calls.\n\nKexec on panic support has been integrated into the core patch and is\nrelatively clean.\n\nIn addition the hopefully architecture independent option\ncrashkernel\u003dsize@location has been docuemented. It\u0027s purpose is to reserve\nspace for the panic kernel to live, and where no DMA transfer will ever be\nsetup to access.\n\nSigned-off-by: Eric Biederman \u003cebiederm@xmission.com\u003e\nSigned-off-by: Alexander Nyberg \u003calexn@telia.com\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nSigned-off-by: Vivek Goyal \u003cvgoyal@in.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" } ] }