)]}' { "log": [ { "commit": "c0614829c16ab9d31f1b7d40516decfbf3d32102", "tree": "3787f73258a8cc02b6608849c37bff71ce3a3272", "parents": [ "c7993165ef0c1d636ca05f4787739f8414584e6d" ], "author": { "name": "Masami Hiramatsu", "email": "mhiramat@redhat.com", "time": "Tue Apr 27 18:33:12 2010 -0400" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sat May 08 18:08:30 2010 +0200" }, "message": "kprobes: Move enable/disable_kprobe() out from debugfs code\n\nMove enable/disable_kprobe() API out from debugfs related code,\nbecause these interfaces are not related to debugfs interface.\n\nThis fixes a compiler warning.\n\nSigned-off-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nAcked-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nAcked-by: Tony Luck \u003ctony.luck@intel.com\u003e\nCc: systemtap \u003csystemtap@sources.redhat.com\u003e\nCc: DLE \u003cdle-develop@lists.sourceforge.net\u003e\nLKML-Reference: \u003c20100427223312.2322.60512.stgit@localhost6.localdomain6\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "83ff56f46a8532488ee364bb93a9cb2a59490d33", "tree": "eacccd619d004b2578bc14e6049eb7c03aac8bb0", "parents": [ "a12b51c478899fe0b7e874a559b05ba35f1128ee" ], "author": { "name": "Masami Hiramatsu", "email": "mhiramat@redhat.com", "time": "Tue Mar 09 10:22:19 2010 -0500" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Mar 11 14:06:16 2010 +0100" }, "message": "kprobes: Calculate the index correctly when freeing the out-of-line execution slot\n\nFrom : Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\n\nWhen freeing the instruction slot, the arithmetic to calculate\nthe index of the slot in the page needs to account for the total\nsize of the instruction on the various architectures.\n\nCalculate the index correctly when freeing the out-of-line\nexecution slot.\n\nReported-by: Sachin Sant \u003csachinp@in.ibm.com\u003e\nReported-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nSigned-off-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nSigned-off-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nLKML-Reference: \u003c4B9667AB.9050507@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "b2be84df99ebc93599c69e931a3c4a5105abfabc", "tree": "35f720b12bed1cc98c7d261dc3a6af96916faa44", "parents": [ "afd66255b9a48f5851326ddae50e2203fbf71dc9" ], "author": { "name": "Masami Hiramatsu", "email": "mhiramat@redhat.com", "time": "Thu Feb 25 08:34:15 2010 -0500" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Feb 25 17:49:25 2010 +0100" }, "message": "kprobes: Jump optimization sysctl interface\n\nAdd /proc/sys/debug/kprobes-optimization sysctl which enables\nand disables kprobes jump optimization on the fly for debugging.\n\nChanges in v7:\n - Remove ctl_name \u003d CTL_UNNUMBERED for upstream compatibility.\n\nChanges in v6:\n- Update comments and coding style.\n\nSigned-off-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nCc: systemtap \u003csystemtap@sources.redhat.com\u003e\nCc: DLE \u003cdle-develop@lists.sourceforge.net\u003e\nCc: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Jim Keniston \u003cjkenisto@us.ibm.com\u003e\nCc: Srikar Dronamraju \u003csrikar@linux.vnet.ibm.com\u003e\nCc: Christoph Hellwig \u003chch@infradead.org\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Anders Kaseorg \u003candersk@ksplice.com\u003e\nCc: Tim Abbott \u003ctabbott@ksplice.com\u003e\nCc: Andi Kleen \u003candi@firstfloor.org\u003e\nCc: Jason Baron \u003cjbaron@redhat.com\u003e\nCc: Mathieu Desnoyers \u003ccompudj@krystal.dyndns.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nLKML-Reference: \u003c20100225133415.6725.8274.stgit@localhost6.localdomain6\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "afd66255b9a48f5851326ddae50e2203fbf71dc9", "tree": "32c7a36a8e2c740b989f16b3e2878f8c565d57f8", "parents": [ "4610ee1d3638fa05ba8e87ccfa971db8e4033ae7" ], "author": { "name": "Masami Hiramatsu", "email": "mhiramat@redhat.com", "time": "Thu Feb 25 08:34:07 2010 -0500" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Feb 25 17:49:24 2010 +0100" }, "message": "kprobes: Introduce kprobes jump optimization\n\nIntroduce kprobes jump optimization arch-independent parts.\nKprobes uses breakpoint instruction for interrupting execution\nflow, on some architectures, it can be replaced by a jump\ninstruction and interruption emulation code. This gains kprobs\u0027\nperformance drastically.\n\nTo enable this feature, set CONFIG_OPTPROBES\u003dy (default y if the\narch supports OPTPROBE).\n\nChanges in v9:\n - Fix a bug to optimize probe when enabling.\n - Check nearby probes can be optimize/unoptimize when disarming/arming\n kprobes, instead of registering/unregistering. This will help\n kprobe-tracer because most of probes on it are usually disabled.\n\nChanges in v6:\n - Cleanup coding style for readability.\n - Add comments around get/put_online_cpus().\n\nChanges in v5:\n - Use get_online_cpus()/put_online_cpus() for avoiding text_mutex\n deadlock.\n\nSigned-off-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nCc: systemtap \u003csystemtap@sources.redhat.com\u003e\nCc: DLE \u003cdle-develop@lists.sourceforge.net\u003e\nCc: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Jim Keniston \u003cjkenisto@us.ibm.com\u003e\nCc: Srikar Dronamraju \u003csrikar@linux.vnet.ibm.com\u003e\nCc: Christoph Hellwig \u003chch@infradead.org\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Anders Kaseorg \u003candersk@ksplice.com\u003e\nCc: Tim Abbott \u003ctabbott@ksplice.com\u003e\nCc: Andi Kleen \u003candi@firstfloor.org\u003e\nCc: Jason Baron \u003cjbaron@redhat.com\u003e\nCc: Mathieu Desnoyers \u003ccompudj@krystal.dyndns.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nLKML-Reference: \u003c20100225133407.6725.81992.stgit@localhost6.localdomain6\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "4610ee1d3638fa05ba8e87ccfa971db8e4033ae7", "tree": "6f03d6787616687e61f1c3ef27b68d96f66cc7d0", "parents": [ "d498f763950703c724c650db1d34a1c8679f9ca8" ], "author": { "name": "Masami Hiramatsu", "email": "mhiramat@redhat.com", "time": "Thu Feb 25 08:33:59 2010 -0500" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Feb 25 17:49:24 2010 +0100" }, "message": "kprobes: Introduce generic insn_slot framework\n\nMake insn_slot framework support various size slots.\nCurrent insn_slot just supports one-size instruction buffer\nslot. However, kprobes jump optimization needs larger size\nbuffers.\n\nSigned-off-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nCc: systemtap \u003csystemtap@sources.redhat.com\u003e\nCc: DLE \u003cdle-develop@lists.sourceforge.net\u003e\nCc: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Jim Keniston \u003cjkenisto@us.ibm.com\u003e\nCc: Srikar Dronamraju \u003csrikar@linux.vnet.ibm.com\u003e\nCc: Christoph Hellwig \u003chch@infradead.org\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Anders Kaseorg \u003candersk@ksplice.com\u003e\nCc: Tim Abbott \u003ctabbott@ksplice.com\u003e\nCc: Andi Kleen \u003candi@firstfloor.org\u003e\nCc: Jason Baron \u003cjbaron@redhat.com\u003e\nCc: Mathieu Desnoyers \u003ccompudj@krystal.dyndns.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nLKML-Reference: \u003c20100225133358.6725.82430.stgit@localhost6.localdomain6\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Jim Keniston \u003cjkenisto@us.ibm.com\u003e\nCc: Srikar Dronamraju \u003csrikar@linux.vnet.ibm.com\u003e\nCc: Christoph Hellwig \u003chch@infradead.org\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: H. Peter Anvin \u003chpa@zytor.com\u003e\nCc: Anders Kaseorg \u003candersk@ksplice.com\u003e\nCc: Tim Abbott \u003ctabbott@ksplice.com\u003e\nCc: Andi Kleen \u003candi@firstfloor.org\u003e\nCc: Jason Baron \u003cjbaron@redhat.com\u003e\nCc: Mathieu Desnoyers \u003ccompudj@krystal.dyndns.org\u003e\n" }, { "commit": "5ecaafdbf44b1ba400b746c60c401d54c7ee0863", "tree": "a781d78f30a618cbb734dc18dad8c5cb6271a832", "parents": [ "2161db969313cb94ffd9377a525fb75c3fee9eeb" ], "author": { "name": "Masami Hiramatsu", "email": "mhiramat@redhat.com", "time": "Fri Feb 05 01:24:34 2010 -0500" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Feb 05 08:13:57 2010 +0100" }, "message": "kprobes: Add mcount to the kprobes blacklist\n\nSince mcount function can be called from everywhere,\nit should be blacklisted. Moreover, the \"mcount\" symbol\nis a special symbol name. So, it is better to put it in\nthe generic blacklist.\n\nSigned-off-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nCc: systemtap \u003csystemtap@sources.redhat.com\u003e\nCc: DLE \u003cdle-develop@lists.sourceforge.net\u003e\nCc: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nLKML-Reference: \u003c20100205062433.3745.36726.stgit@dhcp-100-2-132.bos.redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "4554dbcb85a4ed2abaa2b6fa15649b796699ec89", "tree": "5debd228bf382384d8a1430246b65a0f669f816f", "parents": [ "2cfa19780d61740f65790c5bae363b759d7c96fa" ], "author": { "name": "Masami Hiramatsu", "email": "mhiramat@redhat.com", "time": "Tue Feb 02 16:49:18 2010 -0500" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Feb 04 09:36:19 2010 +0100" }, "message": "kprobes: Check probe address is reserved\n\nCheck whether the address of new probe is already reserved by\nftrace or alternatives (on x86) when registering new probe.\nIf reserved, it returns an error and not register the probe.\n\nSigned-off-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nCc: systemtap \u003csystemtap@sources.redhat.com\u003e\nCc: DLE \u003cdle-develop@lists.sourceforge.net\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: przemyslaw@pawelczyk.it\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Jim Keniston \u003cjkenisto@us.ibm.com\u003e\nCc: Mathieu Desnoyers \u003ccompudj@krystal.dyndns.org\u003e\nCc: Jason Baron \u003cjbaron@redhat.com\u003e\nLKML-Reference: \u003c20100202214918.4694.94179.stgit@dhcp-100-2-132.bos.redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "615d0ebbc782b67296e3226c293f520f93f93515", "tree": "1831dffd72515695839fc3e99a70976393c4d6c8", "parents": [ "57d818895f9d294ab9080e5a662675fdee943ff1" ], "author": { "name": "Masami Hiramatsu", "email": "mhiramat@redhat.com", "time": "Tue Feb 02 16:49:04 2010 -0500" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Feb 04 09:36:18 2010 +0100" }, "message": "kprobes: Disable booster when CONFIG_PREEMPT\u003dy\n\nDisable kprobe booster when CONFIG_PREEMPT\u003dy at this time,\nbecause it can\u0027t ensure that all kernel threads preempted on\nkprobe\u0027s boosted slot run out from the slot even using\nfreeze_processes().\n\nThe booster on preemptive kernel will be resumed if\nsynchronize_tasks() or something like that is introduced.\n\nSigned-off-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nCc: systemtap \u003csystemtap@sources.redhat.com\u003e\nCc: DLE \u003cdle-develop@lists.sourceforge.net\u003e\nCc: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Jim Keniston \u003cjkenisto@us.ibm.com\u003e\nCc: Mathieu Desnoyers \u003ccompudj@krystal.dyndns.org\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nLKML-Reference: \u003c20100202214904.4694.24330.stgit@dhcp-100-2-132.bos.redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "c2ef6661ce62e26a8c0978e521fab646128a144b", "tree": "d03139549a1bfd627249a4db2e36b788b62462e3", "parents": [ "0b413e44d64aeac36a096505a40fc2ff470872fa" ], "author": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Mon Dec 21 13:02:24 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Dec 28 10:25:31 2009 +0100" }, "message": "kprobes: Fix distinct type warning\n\nEvery time I see this:\n\n kernel/kprobes.c: In function \u0027register_kretprobe\u0027:\n kernel/kprobes.c:1038: warning: comparison of distinct pointer types lacks a cast\n\nI\u0027m wondering if something changed in common code and we need to\ndo something for s390. Apparently that\u0027s not the case.\nLet\u0027s get rid of this annoying warning.\n\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nAcked-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nLKML-Reference: \u003c20091221120224.GA4471@osiris.boeblingen.de.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "c3fa27d1367fac63ac8533d6f20ea851d0d70a10", "tree": "e7731554085e22b6b63411b1ebb401079f3e0bbb", "parents": [ "96fa2b508d2d3fe040cf4ef2fffb955f0a537ea1", "d103d01e4b19f185d3c85f77402b605534c32e89" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Dec 05 15:30:21 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Dec 05 15:30:21 2009 -0800" }, "message": "Merge branch \u0027perf-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027perf-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (470 commits)\n x86: Fix comments of register/stack access functions\n perf tools: Replace %m with %a in sscanf\n hw-breakpoints: Keep track of user disabled breakpoints\n tracing/syscalls: Make syscall events print callbacks static\n tracing: Add DEFINE_EVENT(), DEFINE_SINGLE_EVENT() support to docbook\n perf: Don\u0027t free perf_mmap_data until work has been done\n perf_event: Fix compile error\n perf tools: Fix _GNU_SOURCE macro related strndup() build error\n trace_syscalls: Remove unused syscall_name_to_nr()\n trace_syscalls: Simplify syscall profile\n trace_syscalls: Remove duplicate init_enter_##sname()\n trace_syscalls: Add syscall_nr field to struct syscall_metadata\n trace_syscalls: Remove enter_id exit_id\n trace_syscalls: Set event_enter_##sname-\u003edata to its metadata\n trace_syscalls: Remove unused event_syscall_enter and event_syscall_exit\n perf_event: Initialize data.period in perf_swevent_hrtimer()\n perf probe: Simplify event naming\n perf probe: Add --list option for listing current probe events\n perf probe: Add argv_split() from lib/argv_split.c\n perf probe: Move probe event utility functions to probe-event.c\n ...\n" }, { "commit": "4dae560f97fa438f373b53e14b30149c9e44a600", "tree": "4408896d10c483e0f855636f8b9e208bd856d6fc", "parents": [ "5e9b397292ca0b9409dced33e3a22ec993377064" ], "author": { "name": "Ananth N Mavinakayanahalli", "email": "ananth@in.ibm.com", "time": "Fri Oct 30 19:23:10 2009 +0530" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Nov 02 17:00:18 2009 +0100" }, "message": "kprobes: Sanitize struct kretprobe_instance allocations\n\nFor as long as kretprobes have existed, we\u0027ve allocated NR_CPUS\ninstances of kretprobe_instance structures. With the default\nvalue of CONFIG_NR_CPUS increasing on certain architectures, we\nare potentially wasting kernel memory.\n\nSee http://sourceware.org/bugzilla/show_bug.cgi?id\u003d10839#c3 for\nmore details.\n\nUse a saner num_possible_cpus() instead of NR_CPUS for\nallocation.\n\nSigned-off-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nAcked-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nCc: Jim Keniston \u003cjkenisto@us.ibm.com\u003e\nCc: fweisbec@gmail.com\nLKML-Reference: \u003c20091030135310.GA22230@in.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "bb3c3e807140816b5f5fd4840473ee52a916ad4f", "tree": "9e8a69d266a7df86ca16177eefffab4b4e910753", "parents": [ "595c36490deb49381dc51231a3d5e6b66786ed27", "012abeea669ea49636cf952d13298bb68654146a" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sat Oct 17 09:58:25 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sat Oct 17 09:58:25 2009 +0200" }, "message": "Merge commit \u0027v2.6.32-rc5\u0027 into perf/probes\n\nConflicts:\n\tkernel/trace/trace_event_profile.c\n\nMerge reason: update to -rc5 and resolve conflict.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "828c09509b9695271bcbdc53e9fc9a6a737148d2", "tree": "072ffad6f02db7bf4095e07e2b90247cfa042998", "parents": [ "1c4115e595dec42aa0e81ba47ef46e35b34ed428" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@gmail.com", "time": "Thu Oct 01 15:43:56 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 01 16:11:11 2009 -0700" }, "message": "const: constify remaining file_operations\n\n[akpm@linux-foundation.org: fix KVM]\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nAcked-by: Mike Frysinger \u003cvapier@gentoo.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "d7a4b414eed51f1653bb05ebe84122bf9a7ae18b", "tree": "bd6603a0c27de4c138a1767871897e9cd3e1a1d2", "parents": [ "1f0ab40976460bc4673fa204ce917a725185d8f2", "a724eada8c2a7b62463b73ccf73fd0bb6e928aeb" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Sep 23 23:08:43 2009 +0200" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Sep 23 23:08:43 2009 +0200" }, "message": "Merge commit \u0027linus/master\u0027 into tracing/kprobes\n\nConflicts:\n\tkernel/trace/Makefile\n\tkernel/trace/trace.h\n\tkernel/trace/trace_event_types.h\n\tkernel/trace/trace_export.c\n\nMerge reason:\n\tSync with latest significant tracing core changes.\n" }, { "commit": "88e9d34c727883d7d6f02cf1475b3ec98b8480c7", "tree": "475f544536d52739e0929e7727cab5124e855a06", "parents": [ "b7ed698cc9d556306a4088c238e2ea9311ea2cb3" ], "author": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Tue Sep 22 16:43:43 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Sep 23 07:39:29 2009 -0700" }, "message": "seq_file: constify seq_operations\n\nMake all seq_operations structs const, to help mitigate against\nrevectoring user-triggerable function pointers.\n\nThis is derived from the grsecurity patch, although generated from scratch\nbecause it\u0027s simpler than extracting the changes from there.\n\nSigned-off-by: James Morris \u003cjmorris@namei.org\u003e\nAcked-by: Serge Hallyn \u003cserue@us.ibm.com\u003e\nAcked-by: Casey Schaufler \u003ccasey@schaufler-ca.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "1f0ab40976460bc4673fa204ce917a725185d8f2", "tree": "d854f402352917359729eb35e73bc34ee227c875", "parents": [ "5a0d9050db4d1147722b42afef9011251b2651ee" ], "author": { "name": "Ananth N Mavinakayanahalli", "email": "ananth@in.ibm.com", "time": "Tue Sep 15 10:43:07 2009 +0530" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Thu Sep 17 04:24:57 2009 +0200" }, "message": "kprobes: Prevent re-registration of the same kprobe\n\nPrevent re-registration of the same kprobe. This situation, though\nunlikely, needs to be flagged since it can lead to a system crash if\nit\u0027s not handled.\n\nThe core change itself is small, but the helper routine needed to be\nmoved around a bit; hence the diffstat.\n\nSigned-off-by: Ananth N Mavinakayanahalli\u003cananth@in.ibm.com\u003e\nAcked-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nCc: Jim Keniston \u003cjkenisto@us.ibm.com\u003e\nCc: Andi Kleen \u003cak@linux.intel.com\u003e\nCc: Christoph Hellwig \u003chch@infradead.org\u003e\nCc: Frank Ch. Eigler \u003cfche@redhat.com\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: H. Peter Anvin \u003chpa@zytor.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Jason Baron \u003cjbaron@redhat.com\u003e\nCc: K.Prasad \u003cprasad@linux.vnet.ibm.com\u003e\nCc: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Srikar Dronamraju \u003csrikar@linux.vnet.ibm.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Tom Zanussi \u003ctzanussi@gmail.com\u003e\nLKML-Reference: \u003c20090915051307.GB26458@in.ibm.com\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\n" }, { "commit": "a00e817f42663941ea0aa5f85a9d1c4f8b212839", "tree": "40d2f5e86bf58e4250066fa8cb606a8157e9019b", "parents": [ "f12b4f546b4e327d5620a544a2bddab68de66027" ], "author": { "name": "Masami Hiramatsu", "email": "mhiramat@redhat.com", "time": "Tue Sep 08 12:47:55 2009 -0400" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Fri Sep 11 03:59:35 2009 +0200" }, "message": "kprobes/x86-32: Move irq-exit functions to kprobes section\n\nMove irq-exit functions to .kprobes.text section to protect against\nkprobes recursion.\n\nWhen I ran kprobe stress test on x86-32, I found below symbols\ncause unrecoverable recursive probing:\n\n\tret_from_exception\n\tret_from_intr\n\tcheck_userspace\n\trestore_all\n\trestore_all_notrace\n\trestore_nocheck\n\tirq_return\n\nAnd also, I found some interrupt/exception entry points that\ncause similar problems.\n\nThis patch moves those symbols (including their container functions)\nto .kprobes.text section to prevent any kprobes probing.\n\nSigned-off-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Jim Keniston \u003cjkenisto@us.ibm.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nLKML-Reference: \u003c20090908164755.24050.81182.stgit@dhcp-100-2-132.bos.redhat.com\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\n" }, { "commit": "65e234ec2c4a0659ca22531dc1372a185f088517", "tree": "40d36d893a8bf64e89b6eb031da7f6f8fe279bc3", "parents": [ "8222d718b3ad3ae49c48f69ae4b6a1128c9a92cf" ], "author": { "name": "Masami Hiramatsu", "email": "mhiramat@redhat.com", "time": "Thu Aug 27 13:23:32 2009 -0400" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Sun Aug 30 03:15:55 2009 +0200" }, "message": "kprobes: Prohibit to probe native_get_debugreg\n\nSince do_debug() calls get_debugreg(), native_get_debugreg() will be\ncalled from singlestepping. This can cause an int3 infinite loop.\n\nWe can\u0027t put it in the .text.kprobes section because it is inlined,\nthen we blacklist its name.\n\nSigned-off-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nAcked-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nLKML-Reference: \u003c20090827172332.8246.34194.stgit@localhost.localdomain\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\n" }, { "commit": "24851d2447830e6cba4c4b641cb73e713f312373", "tree": "b0aa315fc67b3aedab3bd84ef99ea3d933fd365c", "parents": [ "30a7e073b590ebd1829a906164b0a637e77cc967" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Aug 26 23:38:30 2009 +0200" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Thu Aug 27 02:33:03 2009 +0200" }, "message": "tracing/kprobes: Dump the culprit kprobe in case of kprobe recursion\n\nKprobes can enter into a probing recursion, ie: a kprobe that does an\nendless loop because one of its core mechanism function used during\nprobing is also probed itself.\n\nThis patch helps pinpointing the kprobe that raised such recursion\nby dumping it and raising a BUG instead of a warning (we also disarm\nthe kprobe to try avoiding recursion in BUG itself). Having a BUG\ninstead of a warning stops the stacktrace in the right place and\ndoesn\u0027t pollute the logs with hundreds of traces that eventually end\nup in a stack overflow.\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nCc: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\n" }, { "commit": "89034bc2c7b839702c00a704e79d112737f98be0", "tree": "e65b1f3d4c751baa840efc81bc4734f089379eb3", "parents": [ "fb82ad719831db58e9baa4c67015aae3fe27e7e3", "85dfd81dc57e8183a277ddd7a56aa65c96f3f487" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Aug 11 14:19:09 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Aug 11 14:19:09 2009 +0200" }, "message": "Merge branch \u0027linus\u0027 into tracing/core\n\nConflicts:\n\tkernel/trace/trace_events_filter.c\n\nWe use the tracing/core version.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "ec30c5f3a18722f8fcf8c83146a10b03ac4d9ff1", "tree": "fc343f7f608f4db5475abfdc8bbad3b0cfef69fd", "parents": [ "90a09c9cf78344d18e2438c3b87363b949629fa3" ], "author": { "name": "Masami Hiramatsu", "email": "mhiramat@redhat.com", "time": "Tue Jul 28 19:47:23 2009 -0400" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jul 30 16:44:06 2009 -0700" }, "message": "kprobes: Use kernel_text_address() for checking probe address\n\nUse kernel_text_address() for checking probe address instead of\n__kernel_text_address(), because __kernel_text_address() returns true\nfor init functions even after relaseing those functions.\n\nThat will hit a BUG() in text_poke().\n\nSigned-off-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nCc: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Jim Keniston \u003cjkenisto@us.ibm.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c5cb5a2d8d7dc872cf1504091ad0e59fe5ff7cb5", "tree": "5608e7a85768d2fa2a21ec8e8f3e933ab1ede60d", "parents": [ "4a2bb6fcc80e6330ca2f2393e98605052cc7780b" ], "author": { "name": "Masami Hiramatsu", "email": "mhiramat@redhat.com", "time": "Tue Jun 30 17:08:14 2009 -0400" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jul 01 10:43:41 2009 +0200" }, "message": "kprobes: Clean up insn_pages by using list instead of hlist\n\nUse struct list instead of struct hlist for managing\ninsn_pages, because insn_pages doesn\u0027t use hash table.\n\nSigned-off-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nAcked-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Jim Keniston \u003cjkenisto@us.ibm.com\u003e\nCc: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nLKML-Reference: \u003c20090630210814.17851.64651.stgit@localhost.localdomain\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "4a2bb6fcc80e6330ca2f2393e98605052cc7780b", "tree": "3e1d2314d7002f13bb61ff78266cce3922673c93", "parents": [ "238a24f626628cb16a3015f332d649f08246ca89" ], "author": { "name": "Masami Hiramatsu", "email": "mhiramat@redhat.com", "time": "Tue Jun 30 17:08:09 2009 -0400" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jul 01 10:43:07 2009 +0200" }, "message": "kprobes: No need to unlock kprobe_insn_mutex\n\nRemove needless kprobe_insn_mutex unlocking during safety check\nin garbage collection, because if someone releases a dirty slot\nduring safety check (which ensures other cpus doesn\u0027t execute\nall dirty slots), the safety check must be fail. So, we need to\nhold the mutex while checking safety.\n\nSigned-off-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nCc: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Jim Keniston \u003cjkenisto@us.ibm.com\u003e\nCc: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nLKML-Reference: \u003c20090630210809.17851.28781.stgit@localhost.localdomain\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "201517a7f3ec497fff545a7659c6c876f89f9054", "tree": "47721de5b13043eb9e7e10aaf7fe544c794a3c7d", "parents": [ "d7a5926978cb109b2db5985c65086483caf9e226" ], "author": { "name": "Masami Hiramatsu", "email": "mhiramat@redhat.com", "time": "Thu May 07 16:31:26 2009 -0400" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri May 08 16:23:48 2009 -0700" }, "message": "kprobes: fix to use text_mutex around arm/disarm kprobe\n\nFix kprobes to lock text_mutex around some arch_arm/disarm_kprobe() which\nare newly added by commit de5bd88d5a5cce3cacea904d3503e5ebdb3852a2.\n\nSigned-off-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nAcked-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Mathieu Desnoyers \u003cmathieu.desnoyers@polymtl.ca\u003e\nCc: Jim Keniston \u003cjkenisto@us.ibm.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "de5bd88d5a5cce3cacea904d3503e5ebdb3852a2", "tree": "da24ac8b38d371ee03a21ed0f3647c518689ebd3", "parents": [ "e579abeb58eb4b8d7321c6eb44dd9e2d0cbaebaa" ], "author": { "name": "Masami Hiramatsu", "email": "mhiramat@redhat.com", "time": "Mon Apr 06 19:01:02 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Apr 07 08:31:08 2009 -0700" }, "message": "kprobes: support per-kprobe disabling\n\nAdd disable_kprobe() and enable_kprobe() to disable/enable kprobes\ntemporarily.\n\ndisable_kprobe() asynchronously disables probe handlers of specified\nkprobe. So, after calling it, some handlers can be called at a while.\nenable_kprobe() enables specified kprobe.\n\naggr_pre_handler and aggr_post_handler check disabled probes. On the\nother hand aggr_break_handler and aggr_fault_handler don\u0027t check it\nbecause these handlers will be called while executing pre or post handlers\nand usually those help error handling.\n\nSigned-off-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nAcked-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Anil S Keshavamurthy \u003canil.s.keshavamurthy@intel.com\u003e\nCc: David S. Miller \u003cdavem@davemloft.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e579abeb58eb4b8d7321c6eb44dd9e2d0cbaebaa", "tree": "56ebd4b392408ddba88a5da54004fd0a1bfbccf9", "parents": [ "cc00e9cfe0e5c4c31057c722e49fdf2c76dd5953" ], "author": { "name": "Masami Hiramatsu", "email": "mhiramat@redhat.com", "time": "Mon Apr 06 19:01:01 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Apr 07 08:31:08 2009 -0700" }, "message": "kprobes: rename kprobe_enabled to kprobes_all_disarmed\n\nRename kprobe_enabled to kprobes_all_disarmed and invert logic due to\navoiding naming confusion from per-probe disabling.\n\nSigned-off-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nAcked-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Anil S Keshavamurthy \u003canil.s.keshavamurthy@intel.com\u003e\nCc: David S. Miller \u003cdavem@davemloft.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "99081ab553d6a88dd6b3774af5eef94dbb8faad7", "tree": "a78c2a07ec780b110e49939c8b954e2468398e16", "parents": [ "b918e5e60d775549478e4268155142156a95aa17" ], "author": { "name": "Masami Hiramatsu", "email": "mhiramat@redhat.com", "time": "Mon Apr 06 19:00:59 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Apr 07 08:31:08 2009 -0700" }, "message": "kprobes: move EXPORT_SYMBOL_GPL just after function definitions\n\nClean up positions of EXPORT_SYMBOL_GPL in kernel/kprobes.c according to\ncheckpatch.pl.\n\nSigned-off-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nAcked-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Anil S Keshavamurthy \u003canil.s.keshavamurthy@intel.com\u003e\nCc: David S. Miller \u003cdavem@davemloft.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b918e5e60d775549478e4268155142156a95aa17", "tree": "92e7d435088772803b24b1d9901ea3e17e6a9189", "parents": [ "96a6d9aa096aeb758273a8fb6388c279ecef5e7e" ], "author": { "name": "Masami Hiramatsu", "email": "mhiramat@redhat.com", "time": "Mon Apr 06 19:00:58 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Apr 07 08:31:07 2009 -0700" }, "message": "kprobes: cleanup aggr_kprobe related code\n\nCurrently, kprobes can disable all probes at once, but can\u0027t disable it\nindividually (not unregister, just disable an kprobe, because\nunregistering needs to wait for scheduler synchronization). These patches\nintroduce APIs for on-the-fly per-probe disabling and re-enabling by\ndis-arming/re-arming its breakpoint instruction.\n\nThis patch:\n\nChange old_p to ap in add_new_kprobe() for readability, copy flags member\nin add_aggr_kprobe(), and simplify the code flow of\nregister_aggr_kprobe().\n\nSigned-off-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nAcked-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Anil S Keshavamurthy \u003canil.s.keshavamurthy@intel.com\u003e\nCc: David S. Miller \u003cdavem@davemloft.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f02b8624fedca39886b0eef770dca70c2f0749b3", "tree": "68583a9e84eacb3203e338c28f9236494ebb40ec", "parents": [ "03418c7efaa429dc7647ac93e3862e3fe1816873" ], "author": { "name": "Ananth N Mavinakayanahalli", "email": "ananth@in.ibm.com", "time": "Wed Mar 18 17:06:21 2009 +0530" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Mar 18 12:51:16 2009 +0100" }, "message": "kprobes: Fix locking imbalance in kretprobes\n\nFix locking imbalance in kretprobes:\n\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\n[ BUG: bad unlock balance detected! ]\n-------------------------------------\nkthreadd/2 is trying to release lock (\u0026rp-\u003elock) at:\n[\u003cc06b3080\u003e] pre_handler_kretprobe+0xea/0xf4\nbut there are no more locks to release!\n\nother info that might help us debug this:\n1 lock held by kthreadd/2:\n #0: (rcu_read_lock){..--}, at: [\u003cc06b2b24\u003e] __atomic_notifier_call_chain+0x0/0x5a\n\nstack backtrace:\nPid: 2, comm: kthreadd Not tainted 2.6.29-rc8 #1\nCall Trace:\n [\u003cc06ae498\u003e] ? printk+0xf/0x17\n [\u003cc06b3080\u003e] ? pre_handler_kretprobe+0xea/0xf4\n [\u003cc044ce6c\u003e] print_unlock_inbalance_bug+0xc3/0xce\n [\u003cc0444d4b\u003e] ? clocksource_read+0x7/0xa\n [\u003cc04450a4\u003e] ? getnstimeofday+0x5f/0xf6\n [\u003cc044a9ca\u003e] ? register_lock_class+0x17/0x293\n [\u003cc044b72c\u003e] ? mark_lock+0x1e/0x30b\n [\u003cc0448956\u003e] ? tick_dev_program_event+0x4a/0xbc\n [\u003cc0498100\u003e] ? __slab_alloc+0xa5/0x415\n [\u003cc06b2fbe\u003e] ? pre_handler_kretprobe+0x28/0xf4\n [\u003cc06b3080\u003e] ? pre_handler_kretprobe+0xea/0xf4\n [\u003cc044cf1b\u003e] lock_release_non_nested+0xa4/0x1a5\n [\u003cc06b3080\u003e] ? pre_handler_kretprobe+0xea/0xf4\n [\u003cc044d15d\u003e] lock_release+0x141/0x166\n [\u003cc06b07dd\u003e] _spin_unlock_irqrestore+0x19/0x50\n [\u003cc06b3080\u003e] pre_handler_kretprobe+0xea/0xf4\n [\u003cc06b20b5\u003e] kprobe_exceptions_notify+0x1c9/0x43e\n [\u003cc06b2b02\u003e] notifier_call_chain+0x26/0x48\n [\u003cc06b2b5b\u003e] __atomic_notifier_call_chain+0x37/0x5a\n [\u003cc06b2b24\u003e] ? __atomic_notifier_call_chain+0x0/0x5a\n [\u003cc06b2b8a\u003e] atomic_notifier_call_chain+0xc/0xe\n [\u003cc0442d0d\u003e] notify_die+0x2d/0x2f\n [\u003cc06b0f9c\u003e] do_int3+0x1f/0x71\n [\u003cc06b0e84\u003e] int3+0x2c/0x34\n [\u003cc042d476\u003e] ? do_fork+0x1/0x288\n [\u003cc040221b\u003e] ? kernel_thread+0x71/0x79\n [\u003cc043ed1b\u003e] ? kthread+0x0/0x60\n [\u003cc043ed1b\u003e] ? kthread+0x0/0x60\n [\u003cc04040b8\u003e] ? kernel_thread_helper+0x0/0x10\n [\u003cc043ec7f\u003e] kthreadd+0xac/0x148\n [\u003cc043ebd3\u003e] ? kthreadd+0x0/0x148\n [\u003cc04040bf\u003e] kernel_thread_helper+0x7/0x10\n\nSigned-off-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nTested-by: Bharata B Rao \u003cbharata@linux.vnet.ibm.com\u003e\nCc: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nCc: Jim Keniston \u003cjkenisto@us.ibm.com\u003e\nCc: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: \u003cstable@kernel.org\u003e [2.6.29.x, 2.6.28.x, 2.6.27.x]\nLKML-Reference: \u003c20090318113621.GB4129@in.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "4460fdad85becd569f11501ad5b91814814335ff", "tree": "7c781d0131f6130498ee2a346c7e95eb9b9b869f", "parents": [ "0e39ac444636ff5be39b26f1cb56d79594654dda" ], "author": { "name": "Mathieu Desnoyers", "email": "mathieu.desnoyers@polymtl.ca", "time": "Fri Mar 06 10:36:38 2009 -0500" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 06 16:49:00 2009 +0100" }, "message": "tracing, Text Edit Lock - kprobes architecture independent support\n\nUse the mutual exclusion provided by the text edit lock in the kprobes code. It\nallows coherent manipulation of the kernel code by other subsystems.\n\nChangelog:\n\nMove the kernel_text_lock/unlock out of the for loops.\nUse text_mutex directly instead of a function.\nRemove whitespace modifications.\n\n(note : kprobes_mutex is always taken outside of text_mutex)\n\nSigned-off-by: Mathieu Desnoyers \u003cmathieu.desnoyers@polymtl.ca\u003e\nAcked-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nAcked-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nLKML-Reference: \u003c49B14306.2080202@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "5a4ccaf37ffece09ef33f1cfec67efa8ee56f967", "tree": "9a246d76a019318f658c3db7567664cffb5f2824", "parents": [ "33f1d7ecc6cffff3c618a02295de969ebbacd95d" ], "author": { "name": "Masami Hiramatsu", "email": "mhiramat@redhat.com", "time": "Tue Jan 06 21:15:32 2009 +0100" }, "committer": { "name": "Len Brown", "email": "len.brown@intel.com", "time": "Fri Jan 16 14:32:17 2009 -0500" }, "message": "kprobes: check CONFIG_FREEZER instead of CONFIG_PM\n\nCheck CONFIG_FREEZER instead of CONFIG_PM because kprobe booster\ndepends on freeze_processes() and thaw_processes() when CONFIG_PREEMPT\u003dy.\n\nThis fixes a linkage error which occurs when CONFIG_PREEMPT\u003dy, CONFIG_PM\u003dy\nand CONFIG_FREEZER\u003dn.\n\nReported-by: Cheng Renquan \u003ccrquan@gmail.com\u003e\nSigned-off-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nSigned-off-by: Rafael J. Wysocki \u003crjw@sisk.pl\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Len Brown \u003clen.brown@intel.com\u003e\n" }, { "commit": "f24659d96f4e056125f14498285203d1427cb18e", "tree": "8dc1e4e0f47b10d426449e395e81a565ad6d0118", "parents": [ "0deddf436a37c18ceb26c6e3b632fb9b5f58a0c1" ], "author": { "name": "Masami Hiramatsu", "email": "mhiramat@redhat.com", "time": "Tue Jan 06 14:41:55 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jan 06 15:59:21 2009 -0800" }, "message": "kprobes: support probing module __init function\n\nAllow kprobes to probe module __init routines. When __init functions are\nfreed, kprobes which probe those functions are set to \"Gone\" flag. These\n\"Gone\" probes are disarmed from the code and never be enabled.\n\nSigned-off-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nAcked-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Anil S Keshavamurthy \u003canil.s.keshavamurthy@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": "49ad2fd76c97133fb396edc24ded7fe26093a578", "tree": "59cf1df91ff982f16a17d56a4a76f159920c3904", "parents": [ "e8386a0cb22f4a2d439384212c494ad0bda848fe" ], "author": { "name": "Masami Hiramatsu", "email": "mhiramat@redhat.com", "time": "Tue Jan 06 14:41:53 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jan 06 15:59:21 2009 -0800" }, "message": "kprobes: remove called_from argument\n\nRemove called_from argument from kprobes which had been used for\npreventing self-refering of kernel module. However, since we don\u0027t keep\nmodule\u0027s refcount after registering kprobe any more, there is no reason to\ncheck that.\n\nThis patch also simplifies registering/unregistering functions because we\ndon\u0027t need to use __builtin_return_address(0) which was passed to\ncalled_from.\n\n[ananth@in.ibm.com: build fix]\nSigned-off-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nAcked-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Anil S Keshavamurthy \u003canil.s.keshavamurthy@intel.com\u003e\nSigned-off-by: Ananth N Mavinakayanahalli \u003cananth@in.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": "e8386a0cb22f4a2d439384212c494ad0bda848fe", "tree": "84c462bccddead49c0e2c0dcfcc0f70cd9cf60f7", "parents": [ "017c39bdb1b3ac1da6db339474a77b528043c05a" ], "author": { "name": "Masami Hiramatsu", "email": "mhiramat@redhat.com", "time": "Tue Jan 06 14:41:52 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jan 06 15:59:21 2009 -0800" }, "message": "kprobes: support probing module __exit function\n\nAllows kprobes to probe __exit routine. This adds flags member to struct\nkprobe. When module is freed(kprobes hooks module_notifier to get this\nevent), kprobes which probe the functions in that module are set to \"Gone\"\nflag to the flags member. These \"Gone\" probes are never be enabled.\nUsers can check the GONE flag through debugfs.\n\nThis also removes mod_refcounted, because we couldn\u0027t free a module if\nkprobe incremented the refcount of that module.\n\n[akpm@linux-foundation.org: document some locking]\n[mhiramat@redhat.com: bugfix: pass aggr_kprobe to arch_remove_kprobe]\n[mhiramat@redhat.com: bugfix: release old_p\u0027s insn_slot before error return]\nSigned-off-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nAcked-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Anil S Keshavamurthy \u003canil.s.keshavamurthy@intel.com\u003e\nSigned-off-by: Masami Hiramatsu \u003cmhiramat@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": "017c39bdb1b3ac1da6db339474a77b528043c05a", "tree": "1c5271ba125e67e5bf81e4e7a6507ae08253fce1", "parents": [ "129415607845d4daea11ddcba706005c69dcb942" ], "author": { "name": "Masami Hiramatsu", "email": "mhiramat@redhat.com", "time": "Tue Jan 06 14:41:51 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jan 06 15:59:20 2009 -0800" }, "message": "kprobes: add __kprobes to kprobe internal functions\n\nAdd __kprobes to kprobes internal functions for protecting from probing by\nkprobes itself.\n\nSigned-off-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nAcked-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Anil S Keshavamurthy \u003canil.s.keshavamurthy@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": "129415607845d4daea11ddcba706005c69dcb942", "tree": "9046ea79a0b81c8823b9d42f00fd7c158861ed5c", "parents": [ "a06f6211ef9b1785922f9d0e8766d63ac4e66de1" ], "author": { "name": "Masami Hiramatsu", "email": "mhiramat@redhat.com", "time": "Tue Jan 06 14:41:50 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jan 06 15:59:20 2009 -0800" }, "message": "kprobes: add kprobe_insn_mutex and cleanup arch_remove_kprobe()\n\nAdd kprobe_insn_mutex for protecting kprobe_insn_pages hlist, and remove\nkprobe_mutex from architecture dependent code.\n\nThis allows us to call arch_remove_kprobe() (and free_insn_slot) while\nholding kprobe_mutex.\n\nSigned-off-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nAcked-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Anil S Keshavamurthy \u003canil.s.keshavamurthy@intel.com\u003e\nCc: Russell King \u003crmk@arm.linux.org.uk\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "bc2f70151fe7a117dbe8347edc5a877e749572a3", "tree": "930634f100acb38baa597f840b5b12bec750c66e", "parents": [ "51e911e27690aecea01d4fe9cb22d38bdd0748ac" ], "author": { "name": "Masami Hiramatsu", "email": "mhiramat@redhat.com", "time": "Tue Jan 06 14:41:46 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jan 06 15:59:20 2009 -0800" }, "message": "kprobes: bugfix: try_module_get even if calling_mod is NULL\n\nWhen someone called register_*probe() from kernel-core code(not from\nmodule) and that probes a kernel module, users can remove the probed\nmodule because kprobe doesn\u0027t increment reference counter of the module.\n(on the other hand, if the kernel-module calls register_*probe, kprobe\nincrements refcount of the probed module.)\n\nCurrently, we have no register_*probe() calling from kernel-core(except\nsmoke-test, but the smoke-test doesn\u0027t probe module), so there is no real\nbugs. But the logic is wrong(or not fair) and it can causes a problem\nwhen someone might want to probe module from kernel.\n\nAfter this patch is applied, even if someone put register_*probe() call in\nthe kernel-core code, it increments the reference counter of the probed\nmodule, and it prevents user to remove the module until stopping probing\nit.\n\nSigned-off-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nCc: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nCc: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Hiroshi Shimamoto \u003ch-shimamoto@ct.jp.nec.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "7e036d040a28bf95255d7eb9faf0ffbba3677e99", "tree": "98203974c15ae4fc5aee5723b385b0f45c331ec7", "parents": [ "084c304980f05833bc8a91b856af7dc7a7bb7d60" ], "author": { "name": "Andrew Morton", "email": "akpm@linux-foundation.org", "time": "Wed Nov 12 13:26:57 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Nov 12 17:17:17 2008 -0800" }, "message": "kernel/kprobes.c: don\u0027t pad kretprobe_table_locks[] on uniprocessor builds\n\nWe only need the cacheline padding on SMP kernels. Saves 6k:\n\n text data bss dec hex filename\n 5713 388 8840 14941 3a5d kernel/kprobes.o\n 5713 388 2632 8733 221d kernel/kprobes.o\n\nAcked-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nCc: Ananth N Mavinakayanahalli \u003cananth@in.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": "a189d0350f387786b1fb5a5d19e3a5ab0bc0cceb", "tree": "d6133d035e0d23a8271f12204e53338f8f343351", "parents": [ "3b1b3f6e57064aa8f91c290fe51cda4c74642902" ], "author": { "name": "Masami Hiramatsu", "email": "mhiramat@redhat.com", "time": "Wed Nov 12 13:26:51 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Nov 12 17:17:16 2008 -0800" }, "message": "kprobes: disable preempt for module_text_address() and kernel_text_address()\n\n__register_kprobe() can be preempted after checking probing address but\nbefore module_text_address() or try_module_get(), and in this interval\nthe module can be unloaded. In that case, try_module_get(probed_mod)\nwill access to invalid address, or kprobe will probe invalid address.\n\nThis patch uses preempt_disable() to protect it and uses\n__module_text_address() and __kernel_text_address().\n\nSigned-off-by: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nSigned-off-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nCc: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Hiroshi Shimamoto \u003ch-shimamoto@ct.jp.nec.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "2b252c541158cfed9d7e5b019b894fe2174f5908", "tree": "cb8f3ea21027f54b1fd54dce51dc47a1ec62b3d0", "parents": [ "88429a105e8c810d9cc9a4ff82cd571816e9858e" ], "author": { "name": "Adrian Bunk", "email": "bunk@kernel.org", "time": "Wed Oct 15 22:05:20 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 16 11:21:52 2008 -0700" }, "message": "make kprobes.c:kretprobe_table_lock() static\n\nMake the needlessly global kretprobe_table_lock() static.\n\nSigned-off-by: Adrian Bunk \u003cbunk@kernel.org\u003e\nAcked-by: Ananth N Mavinakayanahalli \u003cananth@in.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": "8b6dd986823a8d92ed9f54baa5cef8604d9d9d44", "tree": "42aa64ad046b200c4a04491eb3c72ac2f7ffde0e", "parents": [ "ef53d9c5e4da147ecaa43c44c5e5945eb83970a2" ], "author": { "name": "Abhishek Sagar", "email": "sagar.abhishek@gmail.com", "time": "Fri Jul 25 01:46:05 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jul 25 10:53:30 2008 -0700" }, "message": "kprobes: remove redundant config check\n\nI noticed that there\u0027s a CONFIG_KPROBES check inside kernel/kprobes.c,\nwhich is redundant.\n\nSigned-off-by: Abhishek Sagar \u003csagar.abhishek@gmail.com\u003e\nAcked-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nCc: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Anil S Keshavamurthy \u003canil.s.keshavamurthy@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": "ef53d9c5e4da147ecaa43c44c5e5945eb83970a2", "tree": "3b596445e5d0613fda4b33a4ae96e0e3fffdcf1e", "parents": [ "53a9600c634e3bfd6230e0597aca159bf4d4d010" ], "author": { "name": "Srinivasa D S", "email": "srinivasa@in.ibm.com", "time": "Fri Jul 25 01:46:04 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jul 25 10:53:30 2008 -0700" }, "message": "kprobes: improve kretprobe scalability with hashed locking\n\nCurrently list of kretprobe instances are stored in kretprobe object (as\nused_instances,free_instances) and in kretprobe hash table. We have one\nglobal kretprobe lock to serialise the access to these lists. This causes\nonly one kretprobe handler to execute at a time. Hence affects system\nperformance, particularly on SMP systems and when return probe is set on\nlot of functions (like on all systemcalls).\n\nSolution proposed here gives fine-grain locks that performs better on SMP\nsystem compared to present kretprobe implementation.\n\nSolution:\n\n 1) Instead of having one global lock to protect kretprobe instances\n present in kretprobe object and kretprobe hash table. We will have\n two locks, one lock for protecting kretprobe hash table and another\n lock for kretporbe object.\n\n 2) We hold lock present in kretprobe object while we modify kretprobe\n instance in kretprobe object and we hold per-hash-list lock while\n modifying kretprobe instances present in that hash list. To prevent\n deadlock, we never grab a per-hash-list lock while holding a kretprobe\n lock.\n\n 3) We can remove used_instances from struct kretprobe, as we can\n track used instances of kretprobe instances using kretprobe hash\n table.\n\nTime duration for kernel compilation (\"make -j 8\") on a 8-way ppc64 system\nwith return probes set on all systemcalls looks like this.\n\ncacheline non-cacheline Un-patched kernel\naligned patch \t aligned patch\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\nreal 9m46.784s 9m54.412s 10m2.450s\nuser 40m5.715s 40m7.142s 40m4.273s\nsys 2m57.754s 2m58.583s 3m17.430s\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\n\nTime duration for kernel compilation (\"make -j 8) on the same system, when\nkernel is not probed.\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\nreal 9m26.389s\nuser 40m8.775s\nsys 2m7.283s\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\n\nSigned-off-by: Srinivasa DS \u003csrinivasa@in.ibm.com\u003e\nSigned-off-by: Jim Keniston \u003cjkenisto@us.ibm.com\u003e\nAcked-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Anil S Keshavamurthy \u003canil.s.keshavamurthy@intel.com\u003e\nCc: David S. Miller \u003cdavem@davemloft.net\u003e\nCc: Masami Hiramatsu \u003cmhiramat@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": "544304b200c3869bc1312bcf941c4cf04d65b56c", "tree": "6c4f1865275eb105f7b48d5aac19b68ce45c7352", "parents": [ "08405b8bd1795145e0f9cb8cb13949281efe9ec2" ], "author": { "name": "Daniel Guilak", "email": "guilak@linux.vnet.ibm.com", "time": "Thu Jul 10 09:38:19 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jul 10 10:13:51 2008 -0700" }, "message": "kernel/kprobes.c: Made kprobe_blacklist static.\n\nSigned-off-by: Daniel Guilak \u003cdaniel@danielguilak.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "67dddaad5d8b8c5ee5b96a7e2f6cb0faad703865", "tree": "373e5ba749f93e0f1617182f37aca08df5e8b243", "parents": [ "24aac480e76c6f5d1391ac05c5e9c0eb9b0cd302" ], "author": { "name": "Masami Hiramatsu", "email": "mhiramat@redhat.com", "time": "Thu Jun 12 15:21:35 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jun 12 18:05:40 2008 -0700" }, "message": "kprobes: fix error checking of batch registration\n\nFix error checking routine to catch an error which occurs in first\n__register_*probe().\n\nSigned-off-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nCc: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Jim Keniston \u003cjkenisto@us.ibm.com\u003e\nCc: David Miller \u003cdavem@davemloft.net\u003e\nCc: Anil S Keshavamurthy \u003canil.s.keshavamurthy@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": "26b31c1908e02a316edfba08080373342e662c14", "tree": "d9140d82ccc9ed3faa2062549d0e7471da9c9b29", "parents": [ "4a296e07c3a410c09b9155da4c2fa84a07964f38" ], "author": { "name": "Masami Hiramatsu", "email": "mhiramat@redhat.com", "time": "Mon Apr 28 02:14:29 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 28 08:58:32 2008 -0700" }, "message": "kprobes: add (un)register_jprobes for batch registration\n\nIntroduce unregister_/register_jprobes() for jprobe batch registration.\n\nSigned-off-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nCc: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Jim Keniston \u003cjkenisto@us.ibm.com\u003e\nCc: Prasanna S Panchamukhi \u003cprasanna@in.ibm.com\u003e\nCc: Shaohua Li \u003cshaohua.li@intel.com\u003e\nCc: David Miller \u003cdavem@davemloft.net\u003e\nCc: \"Frank Ch. Eigler\" \u003cfche@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": "4a296e07c3a410c09b9155da4c2fa84a07964f38", "tree": "d6070555a2ddf026a7c8534689b425c0e931dcfe", "parents": [ "9861668f747895608cea425f8457989d8dd2edf2" ], "author": { "name": "Masami Hiramatsu", "email": "mhiramat@redhat.com", "time": "Mon Apr 28 02:14:29 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 28 08:58:32 2008 -0700" }, "message": "kprobes: add (un)register_kretprobes for batch registration\n\nIntroduce unregister_/register_kretprobes() for kretprobe batch registration.\n\nSigned-off-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nCc: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Jim Keniston \u003cjkenisto@us.ibm.com\u003e\nCc: Prasanna S Panchamukhi \u003cprasanna@in.ibm.com\u003e\nCc: Shaohua Li \u003cshaohua.li@intel.com\u003e\nCc: David Miller \u003cdavem@davemloft.net\u003e\nCc: \"Frank Ch. Eigler\" \u003cfche@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": "9861668f747895608cea425f8457989d8dd2edf2", "tree": "db5dad352826407afb549a8cfa44d4c66823af15", "parents": [ "99602572812442d47403d85f376ad51298dd82a6" ], "author": { "name": "Masami Hiramatsu", "email": "mhiramat@redhat.com", "time": "Mon Apr 28 02:14:28 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 28 08:58:32 2008 -0700" }, "message": "kprobes: add (un)register_kprobes for batch registration\n\nIntroduce unregister_/register_kprobes() for kprobe batch registration. This\ncan reduce waiting time for synchronized_sched() when a lot of probes have to\nbe unregistered at once.\n\nSigned-off-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nCc: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Jim Keniston \u003cjkenisto@us.ibm.com\u003e\nCc: Prasanna S Panchamukhi \u003cprasanna@in.ibm.com\u003e\nCc: Shaohua Li \u003cshaohua.li@intel.com\u003e\nCc: David Miller \u003cdavem@davemloft.net\u003e\nCc: \"Frank Ch. Eigler\" \u003cfche@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": "3d8d996e0ca5b4093203d3f050b0f70b5c949ae8", "tree": "2b19d3a47bf723c3bf6ff7c8a0d90078feaee08c", "parents": [ "0341a4d0fdd2a0a3d9e2bb3a9afef9f8292c8502" ], "author": { "name": "Srinivasa Ds", "email": "srinivasa@in.ibm.com", "time": "Mon Apr 28 02:14:26 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 28 08:58:32 2008 -0700" }, "message": "kprobes: prevent probing of preempt_schedule()\n\nProhibit users from probing preempt_schedule(). One way of prohibiting the\nuser from probing functions is by marking such functions with __kprobes. But\nthis method doesn\u0027t work for those functions, which are already marked to\ndifferent section like preempt_schedule() (belongs to __sched section). So we\nuse blacklist approach to refuse user from probing these functions.\n\nIn blacklist approach we populate the blacklisted function\u0027s starting address\nand its size in kprobe_blacklist structure. Then we verify the user specified\naddress against start and end of the blacklisted function. So any attempt to\nregister probe on blacklisted functions will be rejected.\n\n[akpm@linux-foundation.org: build fix]\n[akpm@linux-foundation.org: coding-style fixes]\nSigned-off-by: Srinivasa DS \u003csrinivasa@in.ibm.com\u003e\nSigned-off-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nSigned-off-by: Jim Keniston \u003cjkenisto@us.ibm.com\u003e\nCc: Dave Hansen \u003chaveblue@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": "b2a5cd6938879b5bcfef0a73c28fea84c49519c2", "tree": "e2039a9f7a4766dbea703c6ed32db881863efc1d", "parents": [ "1913130553aa231644eb4e955b1a2c533fe33d17" ], "author": { "name": "Masami Hiramatsu", "email": "mhiramat@redhat.com", "time": "Tue Mar 04 14:29:44 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Mar 04 16:35:19 2008 -0800" }, "message": "kprobes: fix a null pointer bug in register_kretprobe()\n\nFix a bug in regiseter_kretprobe() which does not check rp-\u003ekp.symbol_name \u003d\u003d\nNULL before calling kprobe_lookup_name.\n\nFor maintainability, this introduces kprobe_addr helper function which\nresolves addr field. It is used by register_kprobe and register_kretprobe.\n\nSigned-off-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nCc: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Jim Keniston \u003cjkenisto@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": "9edddaa200df18e08fe0cf21036e8ae467b1363c", "tree": "26f5319fac24fb6c76b1276b19725caeb5ec24bc", "parents": [ "8182ec49a73729334f5a6c65a607ba7009ebd6d6" ], "author": { "name": "Ananth N Mavinakayanahalli", "email": "ananth@in.ibm.com", "time": "Tue Mar 04 14:28:37 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Mar 04 16:35:11 2008 -0800" }, "message": "Kprobes: indicate kretprobe support in Kconfig\n\nAdd CONFIG_HAVE_KRETPROBES to the arch/\u003carch\u003e/Kconfig file for relevant\narchitectures with kprobes support. This facilitates easy handling of\nin-kernel modules (like samples/kprobes/kretprobe_example.c) that depend on\nkretprobes being present in the kernel.\n\nThanks to Sam Ravnborg for helping make the patch more lean.\n\nPer Mathieu\u0027s suggestion, added CONFIG_KRETPROBES and fixed up dependencies.\n\nSigned-off-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nAcked-by: Mathieu Desnoyers \u003cmathieu.desnoyers@polymtl.ca\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f47cd9b553aaada602449204513b5a5b29cba263", "tree": "079ddd399b1aa00a8c413ef51f3b8681a19a6e7e", "parents": [ "5beec4aa2ac261b0b4992fb41df40a7ab91e4fad" ], "author": { "name": "Abhishek Sagar", "email": "sagar.abhishek@gmail.com", "time": "Wed Feb 06 01:38:22 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Feb 06 10:41:11 2008 -0800" }, "message": "kprobes: kretprobe user entry-handler\n\nProvide support to add an optional user defined callback to be run at\nfunction entry of a kretprobe\u0027d function. Also modify the kprobe smoke\ntests to include an entry-handler during the kretprobe sanity test.\n\nSigned-off-by: Abhishek Sagar \u003csagar.abhishek@gmail.com\u003e\nCc: Prasanna S Panchamukhi \u003cprasanna@in.ibm.com\u003e\nCc: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Anil S Keshavamurthy \u003canil.s.keshavamurthy@intel.com\u003e\nAcked-by: Jim Keniston \u003cjkenisto@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": "8c1c9356429741a82ff176d0f3400fb9e06b2a30", "tree": "4daa7864163b77943e3d303c32a08672f443685e", "parents": [ "3334052a321aca0ffecb54244d666311f98f5487" ], "author": { "name": "Ananth N Mavinakayanahalli", "email": "ananth@in.ibm.com", "time": "Wed Jan 30 13:32:53 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jan 30 13:32:53 2008 +0100" }, "message": "x86: kprobes: add kprobes smoke tests that run on boot\n\nHere is a quick and naive smoke test for kprobes. This is intended to\njust verify if some unrelated change broke the *probes subsystem. It is\nself contained, architecture agnostic and isn\u0027t of any great use by itself.\n\nThis needs to be built in the kernel and runs a basic set of tests to\nverify if kprobes, jprobes and kretprobes run fine on the kernel. In case\nof an error, it\u0027ll print out a message with a \"BUG\" prefix.\n\nThis is a start; we intend to add more tests to this bucket over time.\n\nThanks to Jim Keniston and Masami Hiramatsu for comments and suggestions.\n\nTested on x86 (32/64) and powerpc.\n\nSigned-off-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nAcked-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "f438d914b220051d4cbc65cbc5d98e163c85c93b", "tree": "75e7fda155a8494595f6ae0539bbb64ef98230f6", "parents": [ "49dce689ad4ef0fd1f970ef762168e4bd46f69a3" ], "author": { "name": "Masami Hiramatsu", "email": "mhiramat@redhat.com", "time": "Tue Oct 16 01:27:49 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:10 2007 -0700" }, "message": "kprobes: support kretprobe blacklist\n\nIntroduce architecture dependent kretprobe blacklists to prohibit users\nfrom inserting return probes on the function in which kprobes can be\ninserted but kretprobes can not.\n\nThis patch also removes \"__kprobes\" mark from \"__switch_to\" on x86_64 and\nregisters \"__switch_to\" to the blacklist on x86-64, because that mark is to\nprohibit user from inserting only kretprobe.\n\nSigned-off-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nCc: Prasanna S Panchamukhi \u003cprasanna@in.ibm.com\u003e\nAcked-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Anil S Keshavamurthy \u003canil.s.keshavamurthy@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": "74a0b5762713a26496db72eac34fbbed46f20fce", "tree": "4a14df7c07ebc16283454f33713519a0e10b5c43", "parents": [ "d5a7430ddcdb598261d70f7eb1bf450b5be52085" ], "author": { "name": "Christoph Hellwig", "email": "hch@lst.de", "time": "Tue Oct 16 01:24:07 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:50 2007 -0700" }, "message": "x86: optimize page faults like all other achitectures and kill notifier cruft\n\nx86(-64) are the last architectures still using the page fault notifier\ncruft for the kprobes page fault hook. This patch converts them to the\nproper direct calls, and removes the now unused pagefault notifier bits\naswell as the cruft in kprobes.c that was related to this mess.\n\nI know Andi didn\u0027t really like this, but all other architecture maintainers\nagreed the direct calls are much better and besides the obvious cruft\nremoval a common way of dealing with kprobes across architectures is\nimportant aswell.\n\n[akpm@linux-foundation.org: build fix]\n[akpm@linux-foundation.org: fix sparc64]\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nCc: \u003clinux-arch@vger.kernel.org\u003e\nCc: Prasanna S Panchamukhi \u003cprasanna@in.ibm.com\u003e\nCc: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Anil S Keshavamurthy \u003canil.s.keshavamurthy@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": "cd5bfea278987ebfe60f3ff92a01696b17c4f978", "tree": "737764f3ab9588b7f00508a8b96160261d76d7ac", "parents": [ "6ddfca9548d8ecc26096a30667423ba919109533" ], "author": { "name": "Peter Chubb", "email": "peterc@gelato.unsw.edu.au", "time": "Fri Aug 10 13:01:10 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sat Aug 11 15:47:42 2007 -0700" }, "message": "fix compilation with gcc 4.2\n\ngcc-4.2 is a lot more picky about its symbol handling. EXPORT_SYMBOL no\nlonger works on symbols that are undefined or defined with static scope.\n\nFor example, with CONFIG_PROFILE off, I see:\n\n kernel/profile.c:206: error: __ksymtab_profile_event_unregister causes a section type conflict\n kernel/profile.c:205: error: __ksymtab_profile_event_register causes a section type conflict\n\nThis patch moves the EXPORTs inside the #ifdef CONFIG_PROFILE, so we\nonly try to export symbols that are defined.\n\nAlso, in kernel/kprobes.c there\u0027s an EXPORT_SYMBOL_GPL() for\njprobes_return, which if CONFIG_JPROBES is undefined is a static\ninline and gives the same error.\n\nAnd in drivers/acpi/resources/rsxface.c, there\u0027s an\nACPI_EXPORT_SYMBOPL() for a static symbol. If it\u0027s static, it\u0027s not\naccessible from outside the compilation unit, so should bot be exported.\n\nThese three changes allow building a zx1_defconfig kernel with gcc 4.2\non IA64.\n\n[akpm@linux-foundation.org: export jpobe_return properly]\nSigned-off-by: Peter Chubb \u003cpeterc@gelato.unsw.edu.au\u003e\nCc: Prasanna S Panchamukhi \u003cprasanna@in.ibm.com\u003e\nCc: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Anil S Keshavamurthy \u003canil.s.keshavamurthy@intel.com\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nCc: Len Brown \u003clenb@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": "3d7e33825d8799115dd2495c9944badd3272a623", "tree": "869eeefa9dd88c622db199f636cd1785c6099947", "parents": [ "9e367d859297b9377d65574f538cf52730e9eda8" ], "author": { "name": "Michael Ellerman", "email": "michael@ellerman.id.au", "time": "Thu Jul 19 01:48:11 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:44 2007 -0700" }, "message": "jprobes: make jprobes a little safer for users\n\nI realise jprobes are a razor-blades-included type of interface, but that\ndoesn\u0027t mean we can\u0027t try and make them safer to use. This guy I know once\nwrote code like this:\n\nstruct jprobe jp \u003d { .kp.symbol_name \u003d \"foo\", .entry \u003d \"jprobe_foo\" };\n\nAnd then his kernel exploded. Oops.\n\nThis patch adds an arch hook, arch_deref_entry_point() (I don\u0027t like it\neither) which takes the void * in a struct jprobe, and gives back the text\naddress that it represents.\n\nWe can then use that in register_jprobe() to check that the entry point we\u0027re\npassed is actually in the kernel text, rather than just some random value.\n\nSigned-off-by: Michael Ellerman \u003cmichael@ellerman.id.au\u003e\nCc: Prasanna S Panchamukhi \u003cprasanna@in.ibm.com\u003e\nAcked-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Anil S Keshavamurthy \u003canil.s.keshavamurthy@intel.com\u003e\nCc: David S. Miller \u003cdavem@davemloft.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "bf8f6e5b3e51ee0c64c2d1350c70198ddc8ad3f7", "tree": "c48ebb92f836cfac58465eacc9658fbc2bac4783", "parents": [ "4c4308cb93450989846ac49faeb6dab943e7657e" ], "author": { "name": "Ananth N Mavinakayanahalli", "email": "ananth@in.ibm.com", "time": "Tue May 08 00:34:16 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:19 2007 -0700" }, "message": "Kprobes: The ON/OFF knob thru debugfs\n\nThis patch provides a debugfs knob to turn kprobes on/off\n\no A new file /debug/kprobes/enabled indicates if kprobes is enabled or\n not (default enabled)\no Echoing 0 to this file will disarm all installed probes\no Any new probe registration when disabled will register the probe but\n not arm it. A message will be printed out in such a case.\no When a value 1 is echoed to the file, all probes (including ones\n registered in the intervening period) will be enabled\no Unregistration will happen irrespective of whether probes are globally\n enabled or not.\no Update Documentation/kprobes.txt to reflect these changes. While there\n also update the doc to make it current.\n\nWe are also looking at providing sysrq key support to tie to the disabling\nfeature provided by this patch.\n\n[akpm@linux-foundation.org: Use bool like a bool!]\n[akpm@linux-foundation.org: add printk facility levels]\n[cornelia.huck@de.ibm.com: Add the missing arch_trampoline_kprobe() for s390]\nSigned-off-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nSigned-off-by: Srinivasa DS \u003csrinivasa@in.ibm.com\u003e\nSigned-off-by: Cornelia Huck \u003ccornelia.huck@de.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": "4c4308cb93450989846ac49faeb6dab943e7657e", "tree": "c06092cae6f95a243cdd758d07491cf5fa24a1dd", "parents": [ "6f716acd5fa20ae6a35ab29ae37fa9189e839ed5" ], "author": { "name": "Christoph Hellwig", "email": "hch@lst.de", "time": "Tue May 08 00:34:14 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:19 2007 -0700" }, "message": "kprobes: kretprobes simplifications\n\n - consolidate duplicate code in all arch_prepare_kretprobe instances\n into common code\n - replace various odd helpers that use hlist_for_each_entry to get\n the first elemenet of a list with either a hlist_for_each_entry_save\n or an opencoded access to the first element in the caller\n - inline add_rp_inst into it\u0027s only remaining caller\n - use kretprobe_inst_table_head instead of opencoding it\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nCc: Prasanna S Panchamukhi \u003cprasanna@in.ibm.com\u003e\nAcked-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Anil S Keshavamurthy \u003canil.s.keshavamurthy@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": "6f716acd5fa20ae6a35ab29ae37fa9189e839ed5", "tree": "abefdcd4a24de1879d1bafcf4c827d10db561bc8", "parents": [ "b0bb501651b467096723dcfcf4565d910a2aadf8" ], "author": { "name": "Christoph Hellwig", "email": "hch@lst.de", "time": "Tue May 08 00:34:13 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:19 2007 -0700" }, "message": "kprobes: codingstyle cleanups\n\nRemove superflous braces and fix indentation aswell as comments.\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nCc: Prasanna S Panchamukhi \u003cprasanna@in.ibm.com\u003e\nCc: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Anil S Keshavamurthy \u003canil.s.keshavamurthy@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": "b0bb501651b467096723dcfcf4565d910a2aadf8", "tree": "ed7a6fef07dc5a942f04d403dbe0466301688306", "parents": [ "41ac8df9d5b731a4dd8f1f4e5a9de6ef8768383d" ], "author": { "name": "Christoph Hellwig", "email": "hch@lst.de", "time": "Tue May 08 00:34:11 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:19 2007 -0700" }, "message": "kprobes: use hlist_for_each_entry\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nCc: Prasanna S Panchamukhi \u003cprasanna@in.ibm.com\u003e\nCc: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Anil S Keshavamurthy \u003canil.s.keshavamurthy@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": "ffb45122766db220d0bf3d01848d575fbbcb6430", "tree": "a8fedf0518407ad12578a7c03aa2c3344f11ff3c", "parents": [ "ea07890a680273b25127129fb555aac0d9324bea" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@sw.ru", "time": "Tue May 08 00:28:41 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:08 2007 -0700" }, "message": "Simplify kallsyms_lookup()\n\nSeveral kallsyms_lookup() pass dummy arguments but only need, say, module\u0027s\nname. Make kallsyms_lookup() accept NULLs where possible.\n\nAlso, makes picture clearer about what interfaces are needed for all symbol\nresolving business.\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@sw.ru\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "1eeb66a1bb973534dc3d064920a5ca683823372e", "tree": "19c22d611e6adefb352dbc107b859e4d13ba38c1", "parents": [ "e3869792990f708c97be5877499cada70d469bd3" ], "author": { "name": "Christoph Hellwig", "email": "hch@lst.de", "time": "Tue May 08 00:27:03 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:04 2007 -0700" }, "message": "move die notifier handling to common code\n\nThis patch moves the die notifier handling to common code. Previous\nvarious architectures had exactly the same code for it. Note that the new\ncode is compiled unconditionally, this should be understood as an appel to\nthe other architecture maintainer to implement support for it aswell (aka\nsprinkling a notify_die or two in the proper place)\n\narm had a notifiy_die that did something totally different, I renamed it to\narm_notify_die as part of the patch and made it static to the file it\u0027s\ndeclared and used at. avr32 used to pass slightly less information through\nthis interface and I brought it into line with the other architectures.\n\n[akpm@linux-foundation.org: build fix]\n[akpm@linux-foundation.org: fix vmalloc_sync_all bustage]\n[bryan.wu@analog.com: fix vmalloc_sync_all in nommu]\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nCc: \u003clinux-arch@vger.kernel.org\u003e\nCc: Russell King \u003crmk@arm.linux.org.uk\u003e\nSigned-off-by: Bryan Wu \u003cbryan.wu@analog.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e3869792990f708c97be5877499cada70d469bd3", "tree": "d80ba64365ea7498bf91c267aa07d5ecca529fa3", "parents": [ "880ebdc5166aa6a0aa2a3218357a3d6e0eebcec8" ], "author": { "name": "Randy Dunlap", "email": "randy.dunlap@oracle.com", "time": "Tue May 08 00:27:01 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:04 2007 -0700" }, "message": "kprobes: fix sparse NULL warning\n\nFix sparse NULL warnings:\nkernel/kprobes.c:915:49: warning: Using plain integer as NULL pointer\n\nSigned-off-by: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nAcked-by: Ananth N Mavinakayanahalli \u003cananth@in.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": "346fd59bab28093276be102632f72691a2c243fe", "tree": "6d8c68c246e54b6ff96410873ae24aa3d70ebc2a", "parents": [ "ffda9d302267dbb7fc9bc38f6e4c1b3d61a536a9" ], "author": { "name": "Srinivasa Ds", "email": "srinivasa@in.ibm.com", "time": "Tue Feb 20 13:57:54 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Feb 20 17:10:14 2007 -0800" }, "message": "[PATCH] kprobes: list all active probes in the system\n\nThis patch lists all active probes in the system by scanning through\nkprobe_table[]. It takes care of aggregate handlers and prints the type of\nthe probe. Letter \"k\" for kprobes, \"j\" for jprobes, \"r\" for kretprobes.\nIt also lists address of the instruction,its symbolic name(function name +\noffset) and the module name. One can access this file through\n/sys/kernel/debug/kprobes/list.\n\nOutput looks like this\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\nllm40:~/a # cat /sys/kernel/debug/kprobes/list\nc0169ae3 r sys_read+0x0\nc0169ae3 k sys_read+0x0\nc01694c8 k vfs_write+0x0\nc0167d20 r sys_open+0x0\nf8e658a6 k reiserfs_delete_inode+0x0 reiserfs\nc0120f4a k do_fork+0x0\nc0120f4a j do_fork+0x0\nc0169b4a r sys_write+0x0\nc0169b4a k sys_write+0x0\nc0169622 r vfs_read+0x0\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\n\n[akpm@linux-foundation.org: cleanup]\n[ananth@in.ibm.com: sparc build fix]\nSigned-off-by: Srinivasa DS \u003csrinivasa@in.ibm.com\u003e\nCc: Prasanna S Panchamukhi \u003cprasanna@in.ibm.com\u003e\nCc: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Anil S Keshavamurthy \u003canil.s.keshavamurthy@intel.com\u003e\nSigned-off-by: Ananth N Mavinakayanahalli \u003cananth@in.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": "ab40c5c6b6861ee71fd97f2611027b01e9ec4da0", "tree": "fd3288d65a82cfd3b2a95400f41515d22cc44a64", "parents": [ "46bae1a9a767f3ae8e636d96f9b95703df34b398" ], "author": { "name": "Masami Hiramatsu", "email": "masami.hiramatsu.pt@hitachi.com", "time": "Tue Jan 30 14:36:06 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jan 30 16:01:35 2007 -0800" }, "message": "[PATCH] kprobes: replace magic numbers with enum\n\nReplace the magic numbers with an enum, and gets rid of a warning on the\nspecific architectures (ex. powerpc) on which the compiler considers\n\u0027char\u0027 as \u0027unsigned char\u0027.\n\nSigned-off-by: Masami Hiramatsu \u003cmasami.hiramatsu.pt@hitachi.com\u003e\nCc: Prasanna S Panchamukhi \u003cprasanna@in.ibm.com\u003e\nCc: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Anil S Keshavamurthy \u003canil.s.keshavamurthy@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b4c6c34a530b4d1c626f4ac0a884e0a9b849378c", "tree": "5705a4621b6668bced1969396465800256d76c76", "parents": [ "c15bb296403f1ce448384d58742e0dc04f49d664" ], "author": { "name": "Masami Hiramatsu", "email": "masami.hiramatsu.pt@hitachi.com", "time": "Wed Dec 06 20:38:11 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:38 2006 -0800" }, "message": "[PATCH] kprobes: enable booster on the preemptible kernel\n\nWhen we are unregistering a kprobe-booster, we can\u0027t release its\ninstruction buffer immediately on the preemptive kernel, because some\nprocesses might be preempted on the buffer. The freeze_processes() and\nthaw_processes() functions can clean most of processes up from the buffer.\nThere are still some non-frozen threads who have the PF_NOFREEZE flag. If\nthose threads are sleeping (not preempted) at the known place outside the\nbuffer, we can ensure safety of freeing.\n\nHowever, the processing of this check routine takes a long time. So, this\npatch introduces the garbage collection mechanism of insn_slot. It also\nintroduces the \"dirty\" flag to free_insn_slot because of efficiency.\n\nThe \"clean\" instruction slots (dirty flag is cleared) are released\nimmediately. But the \"dirty\" slots which are used by boosted kprobes, are\nmarked as garbages. collect_garbage_slots() will be invoked to release\n\"dirty\" slots if there are more than INSNS_PER_PAGE garbage slots or if\nthere are no unused slots.\n\nCc: \"Keshavamurthy, Anil S\" \u003canil.s.keshavamurthy@intel.com\u003e\nCc: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: \"bibo,mao\" \u003cbibo.mao@intel.com\u003e\nCc: Prasanna S Panchamukhi \u003cprasanna@in.ibm.com\u003e\nCc: Yumiko Sugita \u003cyumiko.sugita.yf@hitachi.com\u003e\nCc: Satoshi Oshima \u003csoshima@redhat.com\u003e\nCc: Hideo Aoki \u003chaoki@redhat.com\u003e\nSigned-off-by: Masami Hiramatsu \u003cmasami.hiramatsu.pt@hitachi.com\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": "99219a3fbc2dcf2eaa954f7b2ac27299fd7894cd", "tree": "895abde156c9fbeea9c5a87cfaaa411d4ad175c6", "parents": [ "f2aa85a0ccd90110e76c6375535adc3ae358f971" ], "author": { "name": "bibo,mao", "email": "bibo.mao@intel.com", "time": "Mon Oct 02 02:17:35 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Oct 02 07:57:16 2006 -0700" }, "message": "[PATCH] kretprobe spinlock deadlock patch\n\nkprobe_flush_task() possibly calls kfree function during holding\nkretprobe_lock spinlock, if kfree function is probed by kretprobe that will\nincur spinlock deadlock. This patch moves kfree function out scope of\nkretprobe_lock.\n\nSigned-off-by: bibo, mao \u003cbibo.mao@intel.com\u003e\nSigned-off-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "62c27be0dd8144e11bd3ed054a0fb890579925f8", "tree": "1884eaafd723059b903b81db513ca3bf5b06774b", "parents": [ "09b18203d772db318ef92f6908c439ee5a35a4f9" ], "author": { "name": "bibo,mao", "email": "bibo.mao@intel.com", "time": "Mon Oct 02 02:17:33 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Oct 02 07:57:16 2006 -0700" }, "message": "[PATCH] kprobe whitespace cleanup\n\nWhitespace is used to indent, this patch cleans up these sentences by\nkernel coding style.\n\nSigned-off-by: bibo, mao \u003cbibo.mao@intel.com\u003e\nSigned-off-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "3a872d89baae821a0f6e2c1055d4b47650661137", "tree": "5ac6aa55e04960e02f25ff5079078f975957b1b3", "parents": [ "782237a2418e2561a87c86a4832726931adce737" ], "author": { "name": "Ananth N Mavinakayanahalli", "email": "ananth@in.ibm.com", "time": "Mon Oct 02 02:17:30 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Oct 02 07:57:16 2006 -0700" }, "message": "[PATCH] Kprobes: Make kprobe modules more portable\n\nIn an effort to make kprobe modules more portable, here is a patch that:\n\no Introduces the \"symbol_name\" field to struct kprobe.\n The symbol-\u003eaddress resolution now happens in the kernel in an\n architecture agnostic manner. 64-bit powerpc users no longer have\n to specify the \".symbols\"\no Introduces the \"offset\" field to struct kprobe to allow a user to\n specify an offset into a symbol.\no The legacy mechanism of specifying the kprobe.addr is still supported.\n However, if both the kprobe.addr and kprobe.symbol_name are specified,\n probe registration fails with an -EINVAL.\no The symbol resolution code uses kallsyms_lookup_name(). So\n CONFIG_KPROBES now depends on CONFIG_KALLSYMS\no Apparantly kprobe modules were the only legitimate out-of-tree user of\n the kallsyms_lookup_name() EXPORT. Now that the symbol resolution\n happens in-kernel, remove the EXPORT as suggested by Christoph Hellwig\no Modify tcp_probe.c that uses the kprobe interface so as to make it\n work on multiple platforms (in its earlier form, the code wouldn\u0027t\n work, say, on powerpc)\n\nSigned-off-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nSigned-off-by: Prasanna S Panchamukhi \u003cprasanna@in.ibm.com\u003e\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "a9ad965ea9a6d719daf333847a2ceb0e363994bd", "tree": "9ecb71f533c16eb790909f13fefd67fd939ffb2b", "parents": [ "25c8716cb08dea386c7d6220b82eba732ccbf976" ], "author": { "name": "bibo, mao", "email": "bibo.mao@intel.com", "time": "Sun Jul 30 03:03:26 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Jul 31 13:28:38 2006 -0700" }, "message": "[PATCH] IA64: kprobe invalidate icache of jump buffer\n\nKprobe inserts breakpoint instruction in probepoint and then jumps to\ninstruction slot when breakpoint is hit, the instruction slot icache must\nbe consistent with dcache. Here is the patch which invalidates instruction\nslot icache area.\n\nWithout this patch, in some machines there will be fault when executing\ninstruction slot where icache content is inconsistent with dcache.\n\nSigned-off-by: bibo,mao \u003cbibo.mao@intel.com\u003e\nAcked-by: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nAcked-by: Keshavamurthy Anil S \u003canil.s.keshavamurthy@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "e6f47f978bcd5413fff610613b18e9e0eab9bc1b", "tree": "bf9e698cb76a0e958a8c9157fba74fb6d8255298", "parents": [ "3d5631e0631a11633c649bc995a6537ec21b67b4" ], "author": { "name": "Anil S Keshavamurthy", "email": "anil.s.keshavamurthy@intel.com", "time": "Mon Jun 26 00:25:29 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Jun 26 09:58:22 2006 -0700" }, "message": "[PATCH] Notify page fault call chain\n\nWith this patch Kprobes now registers for page fault notifications only when\ntheir is an active probe registered. Once all the active probes are\nunregistered their is no need to be notified of page faults and kprobes\nunregisters itself from the page fault notifications. Hence we will have ZERO\nside effects when no probes are active.\n\nSigned-off-by: Anil S Keshavamurthy \u003canil.s.keshavamurthy@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "3d5631e0631a11633c649bc995a6537ec21b67b4", "tree": "84924f8c647c2d67b9a1113408efd24e48dabf66", "parents": [ "d98f8f05188b45168db43df8ddc9feeb0b1cd512" ], "author": { "name": "Anil S Keshavamurthy", "email": "anil.s.keshavamurthy@intel.com", "time": "Mon Jun 26 00:25:28 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Jun 26 09:58:22 2006 -0700" }, "message": "[PATCH] Kprobes registers for notify page fault\n\nKprobes now registers for page fault notifications.\n\nSigned-off-by: Anil S Keshavamurthy \u003canil.s.keshavmurthy@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "36721656776f177280ccb50477a02e86e6444292", "tree": "20cb06eb08e98636e97703d6e0df77790ede23cf", "parents": [ "585deacaca3e7bfc63580623f0344d1fa9c47f11" ], "author": { "name": "mao, bibo", "email": "bibo.mao@intel.com", "time": "Mon Jun 26 00:25:22 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Jun 26 09:58:22 2006 -0700" }, "message": "[PATCH] Kprobe: multi kprobe posthandler for booster\n\nIf there are multi kprobes on the same probepoint, there will be one extra\naggr_kprobe on the head of kprobe list. The aggr_kprobe has\naggr_post_handler/aggr_break_handler whether the other kprobe\npost_hander/break_handler is NULL or not. This patch modifies this, only\nwhen there is one or more kprobe in the list whose post_handler is not\nNULL, post_handler of aggr_kprobe will be set as aggr_post_handler.\n\n[soshima@redhat.com: !CONFIG_PREEMPT fix]\nSigned-off-by: bibo, mao \u003cbibo.mao@intel.com\u003e\nCc: Masami Hiramatsu \u003chiramatu@sdl.hitachi.co.jp\u003e\nCc: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: \"Keshavamurthy, Anil S\" \u003canil.s.keshavamurthy@intel.com\u003e\nCc: Prasanna S Panchamukhi \u003cprasanna@in.ibm.com\u003e\nCc: Jim Keniston \u003cjkenisto@us.ibm.com\u003e\nCc: Yumiko Sugita \u003csugita@sdl.hitachi.co.jp\u003e\nCc: Hideo Aoki \u003chaoki@redhat.com\u003e\nSigned-off-by: Satoshi Oshima \u003csoshima@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "7522a8423bed9931cbac5502b9c0657bde2700ea", "tree": "8729269696269cba4ca477d711490a6c89c20cda", "parents": [ "5a7b46b369419493bab4de67b1526e9f76b22a7f" ], "author": { "name": "Ananth N Mavinakayanahalli", "email": "ananth@in.ibm.com", "time": "Thu Apr 20 02:43:11 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Thu Apr 20 07:54:03 2006 -0700" }, "message": "[PATCH] kprobes: NULL out non-relevant fields in struct kretprobe\n\nIn cases where a struct kretprobe\u0027s *_handler fields are non-NULL, it is\npossible to cause a system crash, due to the possibility of calls ending up\nin zombie functions. Documentation clearly states that unused *_handlers\nshould be set to NULL, but kprobe users sometimes fail to do so.\n\nFix it by setting the non-relevant fields of the struct kretprobe to NULL.\n\nSigned-off-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nAcked-by: Jim Keniston \u003cjkenisto@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "c6fd91f0bdcd294a0ae0ba2b2a7f7456ef4b7144", "tree": "1d095d1761a44118f101b2ce9697346ff168753a", "parents": [ "c9becf58d935265919bf1cb348b2c04492c8949d" ], "author": { "name": "bibo mao", "email": "bibo_mao@linux.intel.com", "time": "Sun Mar 26 01:38:20 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun Mar 26 08:57:04 2006 -0800" }, "message": "[PATCH] kretprobe instance recycled by parent process\n\nWhen kretprobe probes the schedule() function, if the probed process exits\nthen schedule() will never return, so some kretprobe instances will never\nbe recycled.\n\nIn this patch the parent process will recycle retprobe instances of the\nprobed function and there will be no memory leak of kretprobe instances.\n\nSigned-off-by: bibo mao \u003cbibo.mao@intel.com\u003e\nCc: Masami Hiramatsu \u003chiramatu@sdl.hitachi.co.jp\u003e\nCc: Prasanna S Panchamukhi \u003cprasanna@in.ibm.com\u003e\nCc: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Anil S Keshavamurthy \u003canil.s.keshavamurthy@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "7a7d1cf95408863a657035701606b13644c9f55e", "tree": "7eaee4f3221aabcac2f57fb0295dd1e4763a1e8c", "parents": [ "2c68ee754c40099c59828e59618a54726f76126a" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Mar 23 03:00:35 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Thu Mar 23 07:38:12 2006 -0800" }, "message": "[PATCH] sem2mutex: kprobes\n\nSemaphore to mutex conversion.\n\nThe conversion was generated via scripts, and the result was validated\nautomatically via a script as well.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nAcked-by: Anil S Keshavamurthy \u003canil.s.keshavamurthy@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "278ff9537030bbb292b33504f5e1f6e0126793eb", "tree": "0087828bdf4d9a4fb57c9bcafd068ff058b39797", "parents": [ "e65cefe87beda627c0bfba39b387ee4bffedc93c" ], "author": { "name": "Ananth N Mavinakayanahalli", "email": "ananth@in.ibm.com", "time": "Fri Feb 03 03:03:43 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Feb 03 08:32:00 2006 -0800" }, "message": "[PATCH] Kprobes: Fix deadlock in function-return probes\n\nWhen two function-return probes are inserted on kfree()[1] and the second\non say, sys_link()[2], and later [2] is unregistered, we have a deadlock as\nkfree is called with the kretprobe_lock held and the function-return probe\non kfree will also try to grab the same lock.\n\nHowever, we can move the kfree() during unregistration to outside the\nspinlock as we are sure that no instances from the free list will be used\nafter synchronized_sched() returns during the unregistration process.\nThanks to Masami Hiramatsu for spotting this.\n\nSigned-off-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "e65cefe87beda627c0bfba39b387ee4bffedc93c", "tree": "f44c1d29edcfe271261bd1a36ba9ec12db53489e", "parents": [ "8ed75463b969f72fd724ba0c01107fa443522321" ], "author": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Fri Feb 03 03:03:42 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Feb 03 08:32:00 2006 -0800" }, "message": "[PATCH] kernel/kprobes.c: fix a warning #ifndef ARCH_SUPPORTS_KRETPROBES\n\nkernel/kprobes.c:353: warning: \u0027pre_handler_kretprobe\u0027 defined but not used\n\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nAcked-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nAcked-by: \"Keshavamurthy, Anil S\" \u003canil.s.keshavamurthy@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "df019b1d8b893d0f0ee5a9b0f71486f0892561ae", "tree": "9d2ced14291502af1ca687b5d854d8394cbfb84d", "parents": [ "ef43bc4fc32bec8fda7bae8948b774616dc9e496" ], "author": { "name": "Keshavamurthy Anil S", "email": "anil.s.keshavamurthy@intel.com", "time": "Wed Jan 11 12:17:41 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Jan 11 18:42:12 2006 -0800" }, "message": "[PATCH] kprobes: fix unloading of self probed module\n\nWhen a kprobes modules is written in such a way that probes are inserted on\nitself, then unload of that moudle was not possible due to reference\ncouning on the same module.\n\nThe below patch makes a check and incrementes the module refcount only if\nit is not a self probed module.\n\nWe need to allow modules to probe themself for kprobes performance\nmeasurements\n\nThis patch has been tested on several x86_64, ppc64 and IA64 architectures.\n\nSigned-off-by: Anil S Keshavamurthy \u003canil.s.keshavamurthy\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "a0d50069ed3620e9a4d8939bbc3e0d5a692ab58a", "tree": "219097fa753bfe0dc8f3d6290fc6aa20730005fe", "parents": [ "0498b63504f818e5ab39c818cd6f7b41319a1187" ], "author": { "name": "Keshavamurthy Anil S", "email": "anil.s.keshavamurthy@intel.com", "time": "Mon Jan 09 20:52:46 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Jan 10 08:01:41 2006 -0800" }, "message": "[PATCH] Kprobes: conversion from kcalloc to kzalloc\n\nSigned-of-by: Anil S Keshavamurthy \u003canil.s.keshavamurthy@intel.com\u003e\n\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "0498b63504f818e5ab39c818cd6f7b41319a1187", "tree": "d040fd5e2703f9ad601c6949f58ea29e8554154e", "parents": [ "e597c2984c64609c6e1e1ac803f00f7550705860" ], "author": { "name": "Ananth N Mavinakayanahalli", "email": "ananth@in.ibm.com", "time": "Mon Jan 09 20:52:46 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Jan 10 08:01:40 2006 -0800" }, "message": "[PATCH] kprobes: fix build breakage\n\nThe following patch (against 2.6.15-rc5-mm3) fixes a kprobes build break\ndue to changes introduced in the kprobe locking in 2.6.15-rc5-mm3. In\naddition, the patch reverts back the open-coding of kprobe_mutex.\n\nSigned-off-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nAcked-by: Anil S Keshavamurthy \u003canil.s.keshavamurthy@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "e597c2984c64609c6e1e1ac803f00f7550705860", "tree": "199bac97827782dcd73283018ec5692b63812fac", "parents": [ "f709b122343fb9a010b6cf2d5559641f1820f7c9" ], "author": { "name": "Anil S Keshavamurthy", "email": "anil.s.keshavamurthy@intel.com", "time": "Mon Jan 09 20:52:45 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Jan 10 08:01:40 2006 -0800" }, "message": "[PATCH] kprobes: arch_remove_kprobe\n\nCurrently arch_remove_kprobes() is only implemented/required for x86_64 and\npowerpc. All other architecture like IA64, i386 and sparc64 implementes a\ndummy function which is being called from arch independent kprobes.c file.\n\nThis patch removes the dummy functions and replaces it with\n#define arch_remove_kprobe(p, s)\tdo { } while(0)\n\nSigned-off-by: Anil S Keshavamurthy \u003canil.s.keshavamurthy@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "f709b122343fb9a010b6cf2d5559641f1820f7c9", "tree": "5019515d4debd995570ffd35b6311fdd26456306", "parents": [ "49a2a1b83ba6fa40c41968d6a28ba16e7ed0c3f7" ], "author": { "name": "Keshavamurthy Anil S", "email": "anil.s.keshavamurthy@intel.com", "time": "Mon Jan 09 20:52:44 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Jan 10 08:01:40 2006 -0800" }, "message": "[PATCH] kprobes-changed-from-using-spinlock-to-mutex fix\n\nBased on some feedback from Oleg Nesterov, I have made few changes to\npreviously posted patch.\n\nSigned-off-by: Anil S Keshavamurthy \u003canil.s.keshavamurthy@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "49a2a1b83ba6fa40c41968d6a28ba16e7ed0c3f7", "tree": "f257b535d0f09f9ac2531d40feb732349993665c", "parents": [ "41dead49ccb4d7f0a34d56478f487342a3c3ab2b" ], "author": { "name": "Anil S Keshavamurthy", "email": "anil.s.keshavamurthy@intel.com", "time": "Mon Jan 09 20:52:43 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Jan 10 08:01:40 2006 -0800" }, "message": "[PATCH] kprobes: changed from using spinlock to mutex\n\nSince Kprobes runtime exception handlers is now lock free as this code path is\nnow using RCU to walk through the list, there is no need for the\nregister/unregister{_kprobe} to use spin_{lock/unlock}_isr{save/restore}. The\nserialization during registration/unregistration is now possible using just a\nmutex.\n\nIn the above process, this patch also fixes a minor memory leak for x86_64 and\npowerpc.\n\nSigned-off-by: Anil S Keshavamurthy \u003canil.s.keshavamurthy@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "2d14e39da8712cff8a92298f464a25afb4283ccf", "tree": "17de4fe24f4cba62b0fd2f611c3a031a98412d8d", "parents": [ "d1c0b8f835aeba85aa428aaec6d521ef4639c7fa" ], "author": { "name": "Anil S Keshavamurthy", "email": "anil.s.keshavamurthy@intel.com", "time": "Mon Jan 09 20:52:41 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Jan 10 08:01:39 2006 -0800" }, "message": "[PATCH] kprobes: enable funcions only for required arch\n\nKernel/kprobes.c defines get_insn_slot() and free_insn_slot() which are\ncurrently required _only_ for x86_64 and powerpc (which has no-exec support).\n\nFYI, get{free}_insn_slot() functions manages the memory page which is mapped\nas executable, required for instruction emulation.\n\nThis patch moves those two functions under __ARCH_WANT_KPROBES_INSN_SLOT and\ndefines __ARCH_WANT_KPROBES_INSN_SLOT in arch specific kprobes.h file.\n\nSigned-off-by: Anil S Keshavamurthy \u003canil.s.keshavamurthy@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "bf8d5c52c3b6b27061e3b7d779057fd9a6cac164", "tree": "e4371185eba27db47282410dd490b78598d20636", "parents": [ "00d7c05ab168c10f9b520e07400923267bc04419" ], "author": { "name": "Keshavamurthy Anil S", "email": "anil.s.keshavamurthy@intel.com", "time": "Mon Dec 12 00:37:34 2005 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Dec 12 08:57:45 2005 -0800" }, "message": "[PATCH] kprobes: increment kprobe missed count for multiprobes\n\nWhen multiple probes are registered at the same address and if due to some\nrecursion (probe getting triggered within a probe handler), we skip calling\npre_handlers and just increment nmissed field.\n\nThe below patch make sure it walks the list for multiple probes case.\nWithout the below patch we get incorrect results of nmissed count for\nmultiple probe case.\n\nSigned-off-by: Anil S Keshavamurthy \u003canil.s.keshavamurthy@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "adad0f331f9c693129e81e233c5461e2e7c3e443", "tree": "846b37c12e8a07b7f4f3f5dbecb4b060c2be01c1", "parents": [ "b88cb42428f14fabdaf947150c00d65891820635" ], "author": { "name": "Keshavamurthy Anil S", "email": "anil.s.keshavamurthy@intel.com", "time": "Mon Dec 12 00:37:12 2005 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Dec 12 08:57:43 2005 -0800" }, "message": "[PATCH] kprobes: fix race in aggregate kprobe registration\n\nWhen registering multiple kprobes at the same address, we leave a small\nwindow where the kprobe hlist will not contain a reference to the\nregistered kprobe, leading to potentially, a system crash if the breakpoint\nis hit on another processor.\n\nPatch below now automically relpace the old kprobe with the new\nkprobe from the hash list.\n\nSigned-off-by: Anil S Keshavamurthy \u003canil.s.keshavamurthy@intel.com\u003e\nAcked-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: \"Paul E. McKenney\" \u003cpaulmck@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "b3e55c727ff7349c5db722fbdb8d99a151e8e0bf", "tree": "90d437e565082afe25d68e530e793faeab4b49ac", "parents": [ "3fe968f167975d10c639f03c4934f05a29da73c0" ], "author": { "name": "Mao, Bibo", "email": "bibo.mao@intel.com", "time": "Mon Dec 12 00:37:00 2005 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Dec 12 08:57:41 2005 -0800" }, "message": "[PATCH] Kprobes: Reference count the modules when probed on it\n\nWhen a Kprobes are inserted/removed on a modules, the modules must be ref\ncounted so as not to allow to unload while probes are registered on that\nmodule.\n\nWithout this patch, the probed module is free to unload, and when the\nprobing module unregister the probe, the kpobes code while trying to\nreplace the original instruction might crash.\n\nSigned-off-by: Anil S Keshavamurthy \u003canil.s.keshavamurthy@intel.com\u003e\nSigned-off-by: Mao Bibo \u003cbibo.mao@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "d217d5450f11d8c907c0458d175b0dc999b4d06d", "tree": "ebd68eb9e0b632049d22240a3589887ca27077a5", "parents": [ "991a51d83a3d9bebfafdd1e692cf310899d60791" ], "author": { "name": "Ananth N Mavinakayanahalli", "email": "ananth@in.ibm.com", "time": "Mon Nov 07 01:00:14 2005 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Nov 07 07:53:46 2005 -0800" }, "message": "[PATCH] Kprobes: preempt_disable/enable() simplification\n\nReorganize the preempt_disable/enable calls to eliminate the extra preempt\ndepth. Changes based on Paul McKenney\u0027s review suggestions for the kprobes\nRCU changeset.\n\nSigned-off-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nSigned-off-by: Anil S Keshavamurthy \u003canil.s.keshavamurthy@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "3516a46042508a495fac13c2e73530d936ebe015", "tree": "2d03117832b5c2439987de73420a38fc3e5983e4", "parents": [ "e7a510f92c1e482a7db05afd3cb84af1f4cfe0bc" ], "author": { "name": "Ananth N Mavinakayanahalli", "email": "ananth@in.ibm.com", "time": "Mon Nov 07 01:00:13 2005 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Nov 07 07:53:46 2005 -0800" }, "message": "[PATCH] Kprobes: Use RCU for (un)register synchronization - base changes\n\nChanges to the base kprobes infrastructure to use RCU for synchronization\nduring kprobe registration and unregistration. These changes coupled with the\narch kprobe changes (next in series):\n\na. serialize registration and unregistration of kprobes.\nb. enable lockless execution of handlers. Handlers can now run in parallel.\n\nSigned-off-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nSigned-off-by: Anil S Keshavamurthy \u003canil.s.keshavamurthy@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "e65845235c8120be63001fc1a4ac00c819194bbe", "tree": "209a081cc07375290743ceb45f52dc474f45382a", "parents": [ "66ff2d0691e00e1e7bfdf398a970310c9a0fe671" ], "author": { "name": "Ananth N Mavinakayanahalli", "email": "ananth@in.ibm.com", "time": "Mon Nov 07 01:00:07 2005 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Nov 07 07:53:45 2005 -0800" }, "message": "[PATCH] Kprobes: Track kprobe on a per_cpu basis - base changes\n\nChanges to the base kprobe infrastructure to track kprobe execution on a\nper-cpu basis.\n\nSigned-off-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nSigned-off-by: Anil S Keshavamurthy \u003canil.s.keshavamurthy@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "4e57b6817880946a3a78d5d8cad1ace363f7e449", "tree": "b6b5f3f9e8e52cc55d98239a4992e72e983c8fa4", "parents": [ "b0423a0d9cc836b2c3d796623cd19236bfedfe63" ], "author": { "name": "Tim Schmielau", "email": "tim@physik3.uni-rostock.de", "time": "Sun Oct 30 15:03:48 2005 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun Oct 30 17:37:32 2005 -0800" }, "message": "[PATCH] fix missing includes\n\nI recently picked up my older work to remove unnecessary #includes of\nsched.h, starting from a patch by Dave Jones to not include sched.h\nfrom module.h. This reduces the number of indirect includes of sched.h\nby ~300. Another ~400 pointless direct includes can be removed after\nthis disentangling (patch to follow later).\nHowever, quite a few indirect includes need to be fixed up for this.\n\nIn order to feed the patches through -mm with as little disturbance as\npossible, I\u0027ve split out the fixes I accumulated up to now (complete for\ni386 and x86_64, more archs to follow later) and post them before the real\npatch. This way this large part of the patch is kept simple with only\nadding #includes, and all hunks are independent of each other. So if any\nhunk rejects or gets in the way of other patches, just drop it. My scripts\nwill pick it up again in the next round.\n\nSigned-off-by: Tim Schmielau \u003ctim@physik3.uni-rostock.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "deac66ae454cacf942c051b86d9232af546fb187", "tree": "17a72e7a2dcf2d1a93a6afdef661f290b1888f1c", "parents": [ "bce0649417d6e71f6df8ab7b11103d247913b142" ], "author": { "name": "Keshavamurthy Anil S", "email": "anil.s.keshavamurthy@intel.com", "time": "Tue Sep 06 15:19:35 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Sep 07 16:58:01 2005 -0700" }, "message": "[PATCH] kprobes: fix bug when probed on task and isr functions\n\nThis patch fixes a race condition where in system used to hang or sometime\ncrash within minutes when kprobes are inserted on ISR routine and a task\nroutine.\n\nThe fix has been stress tested on i386, ia64, pp64 and on x86_64. To\nreproduce the problem insert kprobes on schedule() and do_IRQ() functions\nand you should see hang or system crash.\n\nSigned-off-by: Anil S Keshavamurthy \u003canil.s.keshavamurthy@intel.com\u003e\nSigned-off-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nAcked-by: Prasanna S Panchamukhi \u003cprasanna@in.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "d0aaff9796c3310326d10da44fc0faed352a1d29", "tree": "591fd8dedf34464989d23bbb0e66a1ccb2fa18a6", "parents": [ "505db03639db34ca2c64fe7ee27190d324281f2c" ], "author": { "name": "Prasanna S Panchamukhi", "email": "prasanna@in.ibm.com", "time": "Tue Sep 06 15:19:26 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Sep 07 16:57:59 2005 -0700" }, "message": "[PATCH] Kprobes: prevent possible race conditions generic\n\nThere are possible race conditions if probes are placed on routines within the\nkprobes files and routines used by the kprobes. For example if you put probe\non get_kprobe() routines, the system can hang while inserting probes on any\nroutine such as do_fork(). Because while inserting probes on do_fork(),\nregister_kprobes() routine grabs the kprobes spin lock and executes\nget_kprobe() routine and to handle probe of get_kprobe(), kprobes_handler()\ngets executed and tries to grab kprobes spin lock, and spins forever. This\npatch avoids such possible race conditions by preventing probes on routines\nwithin the kprobes file and routines used by kprobes.\n\nI have modified the patches as per Andi Kleen\u0027s suggestion to move kprobes\nroutines and other routines used by kprobes to a seperate section\n.kprobes.text.\n\nAlso moved page fault and exception handlers, general protection fault to\n.kprobes.text section.\n\nThese patches have been tested on i386, x86_64 and ppc64 architectures, also\ncompiled on ia64 and sparc64 architectures.\n\nSigned-off-by: Prasanna S Panchamukhi \u003cprasanna@in.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "6772926bef3c9f0ec761b39e5702535471fff70b", "tree": "b55f1b7af51e10c54781e24b5472236323d24ee5", "parents": [ "4b1294f928d9396e45f62b1c306ac8bf9fae036b" ], "author": { "name": "Rusty Lynch", "email": "rusty.lynch@intel.com", "time": "Tue Jul 05 18:54:50 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Jul 05 19:19:00 2005 -0700" }, "message": "[PATCH] kprobes: fix namespace problem and sparc64 build\n\nThe following renames arch_init, a kprobes function for performing any\narchitecture specific initialization, to arch_init_kprobes in order to\ncleanup the namespace.\n\nAlso, this patch adds arch_init_kprobes to sparc64 to fix the sparc64 kprobes\nbuild from the last return probe patch.\n\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "802eae7c800fb7f583e6c06afa363585af2bef00", "tree": "fa30469a4dc1f1a20abdf9466ec3c68bddef6ac9", "parents": [ "9ec4b1f356b3bad928ae8e2aa9caebfa737d52df" ], "author": { "name": "Rusty Lynch", "email": "rusty.lynch@intel.com", "time": "Mon Jun 27 15:17:08 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Mon Jun 27 15:23:52 2005 -0700" }, "message": "[PATCH] Return probe redesign: architecture independent changes\n\nThe following is the second version of the function return probe patches\nI sent out earlier this week. Changes since my last submission include:\n\n* Fix in ppc64 code removing an unneeded call to re-enable preemption\n* Fix a build problem in ia64 when kprobes was turned off\n* Added another BUG_ON check to each of the architecture trampoline\n handlers\n\nMy initial patch description \u003d\u003d\u003e\n\n From my experiences with adding return probes to x86_64 and ia64, and the\nfeedback on LKML to those patches, I think we can simplify the design\nfor return probes.\n\nThe following patch tweaks the original design such that:\n\n* Instead of storing the stack address in the return probe instance, the\n task pointer is stored. This gives us all we need in order to:\n - find the correct return probe instance when we enter the trampoline\n (even if we are recursing)\n - find all left-over return probe instances when the task is going away\n\n This has the side effect of simplifying the implementation since more\n work can be done in kernel/kprobes.c since architecture specific knowledge\n of the stack layout is no longer required. Specifically, we no longer have:\n\t- arch_get_kprobe_task()\n\t- arch_kprobe_flush_task()\n\t- get_rp_inst_tsk()\n\t- get_rp_inst()\n\t- trampoline_post_handler() \u003csee next bullet\u003e\n\n* Instead of splitting the return probe handling and cleanup logic across\n the pre and post trampoline handlers, all the work is pushed into the\n pre function (trampoline_probe_handler), and then we skip single stepping\n the original function. In this case the original instruction to be single\n stepped was just a NOP, and we can do without the extra interruption.\n\nThe new flow of events to having a return probe handler execute when a target\nfunction exits is:\n\n* At system initialization time, a kprobe is inserted at the beginning of\n kretprobe_trampoline. kernel/kprobes.c use to handle this on it\u0027s own,\n but ia64 needed to do this a little differently (i.e. a function pointer\n is really a pointer to a structure containing the instruction pointer and\n a global pointer), so I added the notion of arch_init(), so that\n kernel/kprobes.c:init_kprobes() now allows architecture specific\n initialization by calling arch_init() before exiting. Each architecture\n now registers a kprobe on it\u0027s own trampoline function.\n\n* register_kretprobe() will insert a kprobe at the beginning of the targeted\n function with the kprobe pre_handler set to arch_prepare_kretprobe\n (still no change)\n\n* When the target function is entered, the kprobe is fired, calling\n arch_prepare_kretprobe (still no change)\n\n* In arch_prepare_kretprobe() we try to get a free instance and if one is\n available then we fill out the instance with a pointer to the return probe,\n the original return address, and a pointer to the task structure (instead\n of the stack address.) Just like before we change the return address\n to the trampoline function and mark the instance as used.\n\n If multiple return probes are registered for a given target function,\n then arch_prepare_kretprobe() will get called multiple times for the same\n task (since our kprobe implementation is able to handle multiple kprobes\n at the same address.) Past the first call to arch_prepare_kretprobe,\n we end up with the original address stored in the return probe instance\n pointing to our trampoline function. (This is a significant difference\n from the original arch_prepare_kretprobe design.)\n\n* Target function executes like normal and then returns to kretprobe_trampoline.\n\n* kprobe inserted on the first instruction of kretprobe_trampoline is fired\n and calls trampoline_probe_handler() (no change here)\n\n* trampoline_probe_handler() consumes each of the instances associated with\n the current task by calling the registered handler function and marking\n the instance as unused until an instance is found that has a return address\n different then the trampoline function.\n\n (change similar to my previous ia64 RFC)\n\n* If the task is killed with some left-over return probe instances (meaning\n that a target function was entered, but never returned), then we just\n free any instances associated with the task. (Not much different other\n then we can handle this without calling architecture specific functions.)\n\n There is a known problem that this patch does not yet solve where\n registering a return probe flush_old_exec or flush_thread will put us\n in a bad state. Most likely the best way to handle this is to not allow\n registering return probes on these two functions.\n\n (Significant change)\n\nThis patch series applies to the 2.6.12-rc6-mm1 kernel, and provides:\n * kernel/kprobes.c changes\n * i386 patch of existing return probes implementation\n * x86_64 patch of existing return probe implementation\n * ia64 implementation\n * ppc64 implementation (provided by Ananth)\n\nThis patch implements the architecture independant changes for a reworking\nof the kprobes based function return probes design. Changes include:\n\n * Removing functions for querying a return probe instance off a stack address\n * Removing the stack_addr field from the kretprobe_instance definition,\n and adding a task pointer\n * Adding architecture specific initialization via arch_init()\n * Removing extern definitions for the architecture trampoline functions\n (this isn\u0027t needed anymore since the architecture handles the\n initialization of the kprobe in the return probe trampoline function.)\n\nSigned-off-by: Rusty Lynch \u003crusty.lynch@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "9ec4b1f356b3bad928ae8e2aa9caebfa737d52df", "tree": "24d27ffed66595a9d864448ec53200ca1745f62c", "parents": [ "d3b8a1a8496c83bc4a3cc76505c29255af15572c" ], "author": { "name": "Ananth N Mavinakayanahalli", "email": "ananth@in.ibm.com", "time": "Mon Jun 27 15:17:01 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Mon Jun 27 15:23:52 2005 -0700" }, "message": "[PATCH] kprobes: fix single-step out of line - take2\n\nNow that PPC64 has no-execute support, here is a second try to fix the\nsingle step out of line during kprobe execution. Kprobes on x86_64 already\nsolved this problem by allocating an executable page and using it as the\nscratch area for stepping out of line. Reuse that.\n\nSigned-off-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "8b0914ea7475615c7c8965c1ac8fe4069270f25c", "tree": "fb85ed3b08d9c61090bbc9dee9d06f54b945e52a", "parents": [ "852caccc89d3883522e87a91bfa89fd9c9cfe15a" ], "author": { "name": "Prasanna S Panchamukhi", "email": "prasanna@in.ibm.com", "time": "Thu Jun 23 00:09:41 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Thu Jun 23 09:45:25 2005 -0700" }, "message": "[PATCH] jprobes: allow a jprobe to coexist with muliple kprobes\n\nPresently either multiple kprobes or only one jprobe could be inserted.\nThis patch removes the above limitation and allows one jprobe and multiple\nkprobes to coexist at the same address. However multiple jprobes cannot\ncoexist with multiple kprobes. Currently I am working on the prototype to\nallow multiple jprobes coexist with multiple kprobes.\n\nSigned-off-by: Ananth N Mavinakayanhalli \u003camavin@redhat.com\u003e\nSigned-off-by: Prasanna S Panchamukhi \u003cprasanna@in.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "ea32c65cc2d2294c04e9f81d0578a6f51febfdbf", "tree": "b301766bcc903f982b0ae85b5edffe9477a65408", "parents": [ "89cb14c0dd0e4a7d0315d19f449389c4d49237ee" ], "author": { "name": "Prasanna S Panchamukhi", "email": "prasanna@in.ibm.com", "time": "Thu Jun 23 00:09:36 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Thu Jun 23 09:45:24 2005 -0700" }, "message": "[PATCH] kprobes: Temporary disarming of reentrant probe\n\nIn situations where a kprobes handler calls a routine which has a probe on it,\nthen kprobes_handler() disarms the new probe forever. This patch removes the\nabove limitation by temporarily disarming the new probe. When the another\nprobe hits while handling the old probe, the kprobes_handler() saves previous\nkprobes state and handles the new probe without calling the new kprobes\nregistered handlers. kprobe_post_handler() restores back the previous kprobes\nstate and the normal execution continues.\n\nHowever on x86_64 architecture, re-rentrancy is provided only through\npre_handler(). If a routine having probe is referenced through\npost_handler(), then the probes on that routine are disarmed forever, since\nthe exception stack is gets changed after the processor single steps the\ninstruction of the new probe.\n\nThis patch includes generic changes to support temporary disarming on\nreentrancy of probes.\n\nSigned-of-by: Prasanna S Panchamukhi \u003cprasanna@in.ibm.com\u003e\n\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "0aa55e4d7db822059fe8132fe9f2b7773c48216c", "tree": "84075ac377f29f393aff802f00def309a98bcf40", "parents": [ "7e1048b11c5afe79aac46a42e3ccec86b8365c6d" ], "author": { "name": "Hien Nguyen", "email": "hien@us.ibm.com", "time": "Thu Jun 23 00:09:26 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Thu Jun 23 09:45:21 2005 -0700" }, "message": "[PATCH] kprobes: moves lock-unlock to non-arch kprobe_flush_task\n\nThis patch moves the lock/unlock of the arch specific kprobe_flush_task()\nto the non-arch specific kprobe_flusk_task().\n\nSigned-off-by: Hien Nguyen \u003chien@us.ibm.com\u003e\nAcked-by: Prasanna S Panchamukhi \u003cprasanna@in.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" } ], "next": "7e1048b11c5afe79aac46a42e3ccec86b8365c6d" }