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* perf tools: Fix build against newer glibcJosh Boyer2011-08-181-0/+2
| | | | | | | | | | | | | | | | | Upstream glibc commit 295e904 added a definition for __attribute_const__ to cdefs.h. This causes the following error when building perf: util/include/linux/compiler.h:8:0: error: "__attribute_const__" redefined [-Werror] /usr/include/sys/cdefs.h:226:0: note: this is the location of the previous definition Wrap __attribute_const__ in #ifndef as we do for __always_inline. Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20110818113720.GL2227@zod.bos.redhat.com Signed-off-by: Josh Boyer <jwboyer@redhat.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: Fix error handling of unknown eventsStephane Eranian2011-08-181-1/+5
| | | | | | | | | | | | | | | | | | | | | | | There was a problem with the parse_events() code not printing the correct event name when an event was unknown and starting with an 'r'. The source of the problem was the way raw notation was parsed. Without the patch: $ perf stat -e retired_foo invalid event modifier: 'tired_foo' With the patch: $ perf stat -e retired_foo invalid or unsupported event: 'retired_foo' This also covers the case where the name of the event was not printed at all when perf was linked with libpfm4. Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20110723021043.GA20178@quad Signed-off-by: Stephane Eranian <eranian@google.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf evlist: Fix missing event name init for default eventStephane Eranian2011-08-181-1/+10
| | | | | | | | | | | | | | | | | When no event is given to perf record, perf top, a default event is initialized (cycles). However, perf_evlist__add_default() was not setting the symbolic name for the event. Perf top worked simply because it was reconstructing the name from the event code. But it should not have to do this. This patch initializes the evsel->name field properly. This second version improves the code flow on the non error path. Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20110607161936.GA8163@quad Signed-off-by: Stephane Eranian <eranian@google.com> [committer note: Use perf_evsel__delete() instead of plain free()] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf list: Fix exit valueStephane Eranian2011-08-181-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes an issue with the exit value of perf list: $ perf list; echo $? 129 perf list returns an error exit code even though there is no error. There was a stray exit(129) in print_events(). This patch removes this exit(). $ perf list; echo $? 0 $ perf list hw sw cpu-cycles OR cycles [Hardware event] stalled-cycles-frontend OR idle-cycles-frontend [Hardware event] stalled-cycles-backend OR idle-cycles-backend [Hardware event] instructions [Hardware event] cache-references [Hardware event] cache-misses [Hardware event] branch-instructions OR branches [Hardware event] branch-misses [Hardware event] bus-cycles [Hardware event] cpu-clock [Software event] task-clock [Software event] page-faults OR faults [Software event] minor-faults [Software event] major-faults [Software event] context-switches OR cs [Software event] cpu-migrations OR migrations [Software event] alignment-faults [Software event] emulation-faults [Software event] $ echo $? 0 Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20110523123917.GA31060@quad Signed-off-by: Stephane Eranian <eranian@google.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf probe: Filter out redundant inline-instancesMasami Hiramatsu2011-08-121-0/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With gcc4.6, some instances of concrete inlined function looks redundant and broken, because it appears inside of a concrete instance and its call_file and call_line are same as the original abstruct's decl_file and decl_line respectively. e.g. [ d1aa] subprogram external (flag) Yes name (strp) "add_timer" decl_file (data1) 2 ;here is original decl_line (data2) 847 ;line and file prototyped (flag) Yes inline (data1) inlined (1) sibling (ref4) [ d1c6] ... [ 11d84] subprogram abstract_origin (ref4) [ d1aa] ; concrete instance low_pc (addr) .text+0x000000000000246f <add_timer> high_pc (addr) .text+0x000000000000248b <mod_timer_pending> frame_base (block1) [ 0] call_frame_cfa sibling (ref4) [ 11dd9] [ 11d9f] formal_parameter abstract_origin (ref4) [ d1b9] location (data4) location list [ 701b] [ 11da8] inlined_subroutine abstract_origin (ref4) [ d1aa] ; redundant instance low_pc (addr) .text+0x000000000000247e <add_timer+0xf> high_pc (addr) .text+0x0000000000002480 <add_timer+0x11> call_file (data1) 2 ; call line and file call_line (data2) 847 ; are same as above Those redundant instances leads unwilling results; e.g. find probe points inside of functions even if we specify a function entry as below; $ perf probe -V add_timer Available variables at add_timer @<add_timer+0> struct timer_list* timer @<add_timer+15> (No matched variables) So, this filters out those redundant instances based on call-site and decl-site information. Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Pekka Enberg <penberg@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: yrl.pp-manager.tt@hitachi.com Link: http://lkml.kernel.org/r/20110811110317.19900.59525.stgit@fedora15 Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf probe: Search concrete out-of-line instancesMasami Hiramatsu2011-08-123-35/+83
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | gcc 4.6 generates a concrete out-of-line instance when there is a function which is implicitly inlined somewhere but also has its own instance. The concrete out-of-line instance means that it has an abstract origin of the function which is referred by not only inlined-subroutines but also a concrete subprogram. Since current dwarf_func_inline_instances() can find only instances of inlined-subroutines, this introduces new die_walk_instances() to find both of subprogram and inlined-subroutines. e.g. without this, Available variables at sched_group_rt_period @<cpu_rt_period_read_uint+9> struct task_group* tg perf probe failed to find actual subprogram instance of sched_group_rt_period(). With this, Available variables at sched_group_rt_period @<cpu_rt_period_read_uint+9> struct task_group* tg @<sched_group_rt_period+0> struct task_group* tg Now it found the sched_group_rt_period() itself. Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Pekka Enberg <penberg@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: yrl.pp-manager.tt@hitachi.com Link: http://lkml.kernel.org/r/20110811110311.19900.63997.stgit@fedora15 Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf probe: Avoid searching variables in intermediate scopesMasami Hiramatsu2011-08-121-31/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix variable searching logic to search one in inner than local scope or global(CU) scope. In the other words, skip searching in intermediate scopes. e.g., in the following code, int var1; void inline infunc(int i) { i++; <--- [A] } void func(void) { int var1, var2; infunc(var2); } At [A], "var1" should point the global variable "var1", however, if user mis-typed as "var2", variable search should be failed. However, current logic searches variable infunc() scope, global scope, and then func() scope. Thus, it can find "var2" variable in func() scope. This may not be what user expects. So, it would better not search outer scopes except outermost (compile unit) scope which contains only global variables, when it failed to find given variable in local scope. E.g. Without this: $ perf probe -V pre_schedule --externs > without.vars With this: $ perf probe -V pre_schedule --externs > with.vars Check the diff: $ diff without.vars with.vars 88d87 < int cpu 133d131 < long unsigned int* switch_count These vars are actually in the scope of schedule(), the caller of pre_schedule(). Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Pekka Enberg <penberg@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: yrl.pp-manager.tt@hitachi.com Link: http://lkml.kernel.org/r/20110811110305.19900.94374.stgit@fedora15 Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf probe: Fix to search local variables in appropriate scopeMasami Hiramatsu2011-08-124-27/+144
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix perf probe to search local variables in appropriate local inlined function scope. For example, pre_schedule() has only 2 local variables, as below; $ perf probe -L pre_schedule <pre_schedule@/home/mhiramat/ksrc/linux-2.6/kernel/sched.c:0> 0 static inline void pre_schedule(struct rq *rq, struct task_struct *prev) { 2 if (prev->sched_class->pre_schedule) 3 prev->sched_class->pre_schedule(rq, prev); } However, current perf probe shows 4 local variables on pre_schedule(), because it searches variables in the caller(schedule()) scope. $ perf probe -V pre_schedule Available variables at pre_schedule @<schedule+445> int cpu long unsigned int* switch_count struct rq* rq struct task_struct* prev This patch fixes this issue by searching variables in the local scope of the instance of inlined function. Here is the result. $ perf probe -V pre_schedule Available variables at pre_schedule @<schedule+445> struct rq* rq struct task_struct* prev Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Pekka Enberg <penberg@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: yrl.pp-manager.tt@hitachi.com Link: http://lkml.kernel.org/r/20110811110259.19900.85664.stgit@fedora15 Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf probe: Fix to walk all inline instancesMasami Hiramatsu2011-08-121-1/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix line-range collector to walk all instances of inlined function, because some execution paths can be optimized out depending on the function argument of instances. E.g.) inline_func (arg) { if (arg) do_something; else do_another; } func_A() { inline_func(1) } func_B() { inline_func(0) } In this case, func_A may have only do_something code and func_B may have only do_another. Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Masami Hiramatsu <masami.hiramatsu@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Pekka Enberg <penberg@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: yrl.pp-manager.tt@hitachi.com Link: http://lkml.kernel.org/r/20110811110247.19900.93702.stgit@fedora15 Signed-off-by: Masami Hiramatsu <masami.hiramatsu@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf probe: Fix to search nested inlined functions in CUMasami Hiramatsu2011-08-122-12/+82
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix perf probe to walk through the lines of all nested inlined function call sites and declared lines when a whole CU is passed to the line walker. The die_walk_lines() can have two different type of DIEs, subprogram (or inlined-subroutine) DIE and CU DIE. If a caller passes a subprogram DIE, this means that the walker walk on lines of given subprogram. In this case, it just needs to search on direct children of DIE tree for finding call-site information of inlined function which directly called from given subprogram. On the other hand, if a caller passes a CU DIE to the walker, this means that the walker have to walk on all lines in the source files included in given CU DIE. In this case, it has to search whole DIE trees of all subprograms to find the call-site information of all nested inlined functions. Without this patch: $ perf probe --line kernel/cpu.c:151-157 </home/mhiramat/ksrc/linux-2.6/kernel/cpu.c:151> static int cpu_notify(unsigned long val, void *v) { 154 return __cpu_notify(val, v, -1, NULL); } With this: $ perf probe --line kernel/cpu.c:151-157 </home/mhiramat/ksrc/linux-2.6/kernel/cpu.c:151> 152 static int cpu_notify(unsigned long val, void *v) { 154 return __cpu_notify(val, v, -1, NULL); } As you can see, --line option with source line range shows the declared lines as probe-able. Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Pekka Enberg <penberg@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: yrl.pp-manager.tt@hitachi.com Link: http://lkml.kernel.org/r/20110811110241.19900.34994.stgit@fedora15 Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf probe: Fix line walker to check CU correctlyMasami Hiramatsu2011-08-121-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix line walker to check whether a given DIE is CU or not. Actually this function accepts CU, subprogram and inlined_subroutine DIEs. Without this fix, perf probe always fails to analyze lines on inlined functions; $ perf probe -L pre_schedule Debuginfo analysis failed. (-2) Error: Failed to show lines. (-2) This fixes that bug, as below. $ perf probe -L pre_schedule <pre_schedule@/home/mhiramat/ksrc/linux-2.6/kernel/sched.c:0> 0 static inline void pre_schedule(struct rq *rq, struct task_struct *prev { 2 if (prev->sched_class->pre_schedule) 3 prev->sched_class->pre_schedule(rq, prev); } /* rq->lock is NOT held, but preemption is disabled */ Changes from v1: - Update against current tip tree.(Fix dwarf-aux.c) Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Masami Hiramatsu <masami.hiramatsu@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Pekka Enberg <penberg@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: yrl.pp-manager.tt@hitachi.com Link: http://lkml.kernel.org/r/20110811110235.19900.20614.stgit@fedora15 Signed-off-by: Masami Hiramatsu <masami.hiramatsu@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf probe: Fix a memory leak for scopes arrayMasami Hiramatsu2011-08-121-3/+2
| | | | | | | | | | | | | | | | Fix a memory leak for scopes array when it finds a variable in the global scope. Reviewed-by: Pekka Enberg <penberg@kernel.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Pekka Enberg <penberg@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: yrl.pp-manager.tt@hitachi.com Link: http://lkml.kernel.org/r/20110811110229.19900.63019.stgit@fedora15 Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf: fix temporary file ownership checkVasiliy Kulikov2011-08-121-1/+1
| | | | | | | | | | | | | | | | A file in /tmp/ might be a symlink, so lstat() should be used instead of stat(). Acked-by: Pekka Enberg <penberg@kernel.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Pekka Enberg <penberg@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20110811205537.GA22864@albatros Signed-off-by: Vasiliy Kulikov <segoon@openwall.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf report: Use properly build_id kernel binariesJiri Olsa2011-08-113-27/+42
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If we bring the recorded perf data together with kernel binary from another machine using: on server A: perf archive on server B: tar xjvf perf.data.tar.bz2 -C ~/.debug the build_id kernel dso is not properly recognized during the "perf report" command on server B. The reason is, that build_id dsos are added during the session initialization, while the kernel maps are created during the sample event processing. The machine__create_kernel_maps functions ends up creating new dso object for kernel, but it does not check if we already have one added by build_id processing. Also the build_id reading ABI quirk added in commit: - commit b25114817a73bbd2b84ce9dba02ee1ef8989a947 perf build-id: Add quirk to deal with perf.data file format breakage populates the "struct build_id_event::pid" with 0, which is later interpreted as DEFAULT_GUEST_KERNEL_ID. This is not always correct, so it's better to guess the pid value based on the "struct build_id_event::header::misc" value. - Tested with data generated on x86 kernel version v2.6.34 and reported back on x86_64 current kernel. - Not tested for guest kernel case. Note the problem stays for PERF_RECORD_MMAP events recorded by perf that does not use proper pid (HOST_KERNEL_ID/DEFAULT_GUEST_KERNEL_ID). They are misinterpreted within the current perf code. Probably there's not much we can do about that. Cc: Avi Kivity <avi@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Yanmin Zhang <yanmin_zhang@linux.intel.com> Link: http://lkml.kernel.org/r/20110601194346.GB1934@jolsa.brq.redhat.com Signed-off-by: Jiri Olsa <jolsa@redhat.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf top browser: Remove spurious helpline updateArnaldo Carvalho de Melo2011-08-101-1/+0
| | | | | | | | | | | | | It will be immediately replaced in perf_top_browser__run. Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-q7e2jzb44elqpkvdllk94x0i@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf symbols: Check '/tmp/perf-' symbol file ownershipPekka Enberg2011-08-091-0/+11
| | | | | | | | | | | | The external symbol files are generated by JIT compilers, for example, but we need to make sure they're ours before injecting them to 'perf report'. Requested-by: Ingo Molnar <mingo@elte.hu> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1312919658-17158-1-git-send-email-penberg@kernel.org Signed-off-by: Pekka Enberg <penberg@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: Check $HOME/.perfconfig ownershipArnaldo Carvalho de Melo2011-08-091-4/+23
| | | | | | | | | | | | | | | | | Just like we do already for perf.data files. Requested-by: Ingo Molnar <mingo@elte.hu> Cc: Ben Hutchings <ben@decadent.org.uk> Cc: Christian Ohm <chr.ohm@gmx.net> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jonathan Nieder <jrnieder@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-qgokmxsmvppwpc5404qhyk7e@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: Add support to install perf python extensionJiri Olsa2011-08-081-1/+20
| | | | | | | | | | | | | | | | | | | Adding install-python_ext target to install python extension related files. Installation directory is governed by python distutils package and follows the DESTDIR variable settings. Also moving python extension build output into '$(O)python_ext_build' directory and making it configurable via PYTHON_EXTBUILD variable. Keeping the '$(O)python/perf.so' file, so it could be used for testing as of until now. Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20110722113307.GA1931@jolsa.brq.redhat.com Signed-off-by: Jiri Olsa <jolsa@redhat.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: do not look at ./config for configurationJonathan Nieder2011-08-081-7/+0
| | | | | | | | | | | | | | | | | | | | | | | | | In addition to /etc/perfconfig and $HOME/.perfconfig, perf looks for configuration in the file ./config, imitating git which looks at $GIT_DIR/config. If ./config is not a perf configuration file, it fails, or worse, treats it as a configuration file and changes behavior in some unexpected way. "config" is not an unusual name for a file to be lying around and perf does not have a private directory dedicated for its own use, so let's just stop looking for configuration in the cwd. Callers needing context-sensitive configuration can use the PERF_CONFIG environment variable. Requested-by: Christian Ohm <chr.ohm@gmx.net> Cc: 632923@bugs.debian.org Cc: Ben Hutchings <ben@decadent.org.uk> Cc: Christian Ohm <chr.ohm@gmx.net> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20110805165838.GA7237@elie.gateway.2wire.net Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf probe: Fix coredump introduced by probe module optionJovi Zhang2011-08-081-4/+8
| | | | | | | | | | | | | | | perf will coredump if the user doesn't give the "-m" option in probe command, this patch fixes it. [root@localhost perf]# ./perf probe --add='PROBE' Segmentation fault (core dumped) Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1311602888-2389-1-git-send-email-bookjovi@gmail.com Signed-off-by: Jovi Zhang <bookjovi@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf python: Add PERF_RECORD_{LOST,READ,SAMPLE} routine tablesArnaldo Carvalho de Melo2011-07-251-3/+112
| | | | | | | | | | | | | | | | | | So those friggin "spurious" PERF_RECORD_MMAP events were actually a brain fart copy'n'paste error in the python binding, doh. I.e. they weren't MMAPs, just SAMPLEs. Fix it by providing routines for these events instead of using the MMAP ones. Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-b0rc8y5jd03f9f11kftodvkm@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf evlist: Introduce 'disable' methodArnaldo Carvalho de Melo2011-07-252-0/+15
| | | | | | | | | | | | | | | | | To remove the last case of access to the FD() macro outside the library. Inspired by a patch by Borislav that moved the FD() macro to util.h, for namespace concerns I rather preferred to constrain it to ev{sel,list}.c. Cc: Borislav Petkov <bp@amd64.org> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-qn893qsstcg366tkucu649qj@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf buildid-cache: Zero out buffer of filenames when adding/removing buildidHan Pingtian2011-07-221-4/+4
| | | | | | | | | | | | | | | | | | | The readlink() function doesn't append a null byte to buf. So we should zero out buf with zalloc(). Or we'll see sometimes error like this: [root@intel-s3e36-01]~# /usr/bin/perf buildid-cache -a /lib/modules/2.6.32-130.el6.x86_64/kernel/crypto/twofish_common.ko -v Adding f64ba8efd5f53c7ad332fc17db1d21de309038e1 /lib/modules/2.6.32-130.el6.x86_64/kernel/crypto/twofish_common.ko: Ok [root@intel-s3e36-01]~# /usr/bin/perf buildid-cache -r /lib/modules/2.6.32-130.el6.x86_64/kernel/crypto/twofish_common.ko -v Removing f64ba8efd5f53c7ad332fc17db1d21de309038e1 /lib/modules/2.6.32-130.el6.x86_64/kernel/crypto/twofish_common.ko: FAIL /lib/modules/2.6.32-130.el6.x86_64/kernel/crypto/twofish_common.ko wasn't in the cache The change in build_id_cache__add_s() is a defense. Tested-by: Jiri Olsa <jolsa@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20110718031314.GA5802@hpt.nay.redhat.com Signed-off-by: Han Pingtian <phan@redhat.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: De-opt the parse_events functionJiri Olsa2011-07-212-11/+21
| | | | | | | | | | | | | | | | | Moving out the option parameter from parse_events function, and adding new parse_events_option function instead. The option parameter is used only to carry "struct perf_evlist" pointer for chaining new events. Putting it away, enable us to call parse_events from other places without using the option parameter. Signed-off-by: Jiri Olsa <jolsa@redhat.com> Cc: acme@redhat.com Cc: a.p.zijlstra@chello.nl Cc: paulus@samba.org Link: http://lkml.kernel.org/r/1310635534-4013-2-git-send-email-jolsa@redhat.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
* perf script: Fix display of IP address for non-callchain pathDavid Ahern2011-07-211-1/+1
| | | | | | | | | | | | | | | | Non-callchain path is using al.addr which prints as: openssl 14564 17672.003587: 7862d _x86_64_AES_encrypt_compact This should be sample->ip to print as: openssl 14564 17672.003587: 3f7867862d _x86_64_AES_encrypt_compact Signed-off-by: David Ahern <dsahern@gmail.com> Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: acme@ghostprotocols.net Cc: peterz@infradead.org Cc: paulus@samba.org Link: http://lkml.kernel.org/r/1306768587-15376-1-git-send-email-dsahern@gmail.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
* perf tools: Fix endian conversion reading event attr from file headerDavid Ahern2011-07-213-13/+23
| | | | | | | | | | | | | | | | | | | | | | | | | The perf_event_attr struct has two __u32's at the top and they need to be swapped individually. With this change I was able to analyze a perf.data collected in a 32-bit PPC VM on an x86 system. I tested both 32-bit and 64-bit binaries for the Intel analysis side; both read the PPC perf.data file correctly. -v2: - changed the existing perf_event__attr_swap() to swap only elements of perf_event_attr and exported it for use in swapping the attributes in the file header - updated swap_ops used for processing events Signed-off-by: David Ahern <dsahern@gmail.com> Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: acme@ghostprotocols.net Cc: peterz@infradead.org Cc: paulus@samba.org Cc: <stable@kernel.org> Link: http://lkml.kernel.org/r/1310754849-12474-1-git-send-email-dsahern@gmail.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
* perf tools: Add missing 'node' alias to the hw_cache[] arrayJiri Olsa2011-07-211-5/+8
| | | | | | | | | | | | | | | | | | | | | | | Add "node" as a simple alias for NODE cache events. The addition of NODE cache events broke the parse_alias function, so any mismatched event caused the segfault, like: # ./perf stat -e krava ls The hw_cache/hw_cache_op/hw_cache_result arrays needs to follow PERF_COUNT_HW_CACHE_*MAX enums. Adding those MAXs to be size of those arrays, so possible ommision in future wil not lead to segfault. Adding read/write/prefetch as allowed operations for node cache event. Signed-off-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: acme@redhat.com Link: http://lkml.kernel.org/r/20110713205818.GB7827@jolsa.brq.redhat.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
* perf probe: Support adding probes on offline kernel modulesMasami Hiramatsu2011-07-151-9/+43
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Support adding probes on offline kernel modules. This enables perf-probe to trace kernel-module init functions via perf-probe. If user gives the path of module with -m option, perf-probe expects the module is offline. This feature works with --add, --funcs, and --vars. E.g) # perf probe -m /lib/modules/`uname -r`/kernel/fs/btrfs/btrfs.ko \ -a "extent_io_init:5 extent_state_cache" Add new events: probe:extent_io_init (on extent_io_init:5 with extent_state_cache) probe:extent_io_init_1 (on extent_io_init:5 with extent_state_cache) You can now use it on all perf tools, such as: perf record -e probe:extent_io_init_1 -aR sleep 1 Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Link: http://lkml.kernel.org/r/20110627072751.6528.10230.stgit@fedora15 Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* perf probe: Add probed module in front of functionMasami Hiramatsu2011-07-152-9/+39
| | | | | | | | | | | | | | | | | Add probed module name and ":" in front of function name if -m module option is given. In the result, the symbol name passed to kprobe-tracer becomes MODULE:FUNCTION, so that kallsyms can solve it as a symbol in the module correctly. Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Link: http://lkml.kernel.org/r/20110627072745.6528.26416.stgit@fedora15 Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* perf probe: Introduce debuginfo to encapsulate dwarf informationMasami Hiramatsu2011-07-153-136/+182
| | | | | | | | | | | | | | Introduce debuginfo to encapsulate dwarf information. This new object allows us to reuse and expand debuginfo easily. Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Link: http://lkml.kernel.org/r/20110627072739.6528.12438.stgit@fedora15 Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* perf-probe: Move dwarf library routines to dwarf-aux.{c, h}Masami Hiramatsu2011-07-154-523/+766
| | | | | | | | | | | | | | | | | | Move dwarf library related routines to dwarf-aux.{c,h}. This includes several minor changes. - Add simple documents for each API. - Rename die_find_real_subprogram() to die_find_realfunc() - Rename line_walk_handler_t to line_walk_callback_t. - Minor cleanups. Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Link: http://lkml.kernel.org/r/20110627072727.6528.57647.stgit@fedora15 Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* perf probe: Remove redundant dwarf functionsMasami Hiramatsu2011-07-151-37/+13
| | | | | | | | | | | | | | | Since there are dwarf_bitsize, dwarf_bitoffset and dwarf_bytesize defined in libdw, we don't need die_get_bit_size, die_get_bit_offset and die_get_byte_size anymore. Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Link: http://lkml.kernel.org/r/20110627072721.6528.2747.stgit@fedora15 Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* perf probe: Move strtailcmp to string.cMasami Hiramatsu2011-07-153-15/+20
| | | | | | | | | | | | | Since strtailcmp() is enough generic, it should be defined in string.c. Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Link: http://lkml.kernel.org/r/20110627072715.6528.10677.stgit@fedora15 Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* perf probe: Rename DIE_FIND_CB_FOUND to DIE_FIND_CB_ENDMasami Hiramatsu2011-07-151-6/+6
| | | | | | | | | | | | | | | Since die_find/walk* callbacks use DIE_FIND_CB_FOUND for both of failed and found cases, it should be "END" instead "FOUND" for avoiding confusion. Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Reported-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Link: http://lkml.kernel.org/r/20110627072709.6528.45706.stgit@fedora15 Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* perf: Robustify proc and debugfs file recordingSonny Rao2011-07-141-91/+29
| | | | | | | | | | | | | | | | While attempting to create a timechart of boot up I found perf didn't tolerate modules being loaded/unloaded. This patch fixes this by reading the file once and then writing the size read at the correct point in the file. It also simplifies the code somewhat. Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: Sonny Rao <sonnyrao@chromium.org> Signed-off-by: Michael Neuling <mikey@neuling.org> Link: http://lkml.kernel.org/r/10011.1310614483@neuling.org Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* perf report/annotate/script: Add option to specify a CPU rangeAnton Blanchard2011-07-052-0/+41
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add an option to perf report/annotate/script to specify which CPUs to operate on. This enables us to take a single system wide profile and analyse each CPU (or group of CPUs) in isolation. This was useful when profiling a multiprocess workload where the bottleneck was on one CPU but this was hidden in the overall profile. Per process and per thread breakdowns didn't help because multiple processes were running on each CPU and no single process consumed an entire CPU. The patch converts the list of CPUs returned by cpu_map__new into a bitmap for fast lookup. I wanted to use -C to be consistent with perf top/record/stat, but unfortunately perf report already uses -C <comms>. v2: Incorporate suggestions from David Ahern: - Added -c to perf script - Check that SAMPLE_CPU is set when -c is used - Update documentation v3: Create perf_session__cpu_bitmap() Signed-off-by: Anton Blanchard <anton@samba.org> Acked-by: David Ahern <dsahern@gmail.com> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Link: http://lkml.kernel.org/r/20110704215750.11647eb9@kryten Signed-off-by: Ingo Molnar <mingo@elte.hu>
* Merge branch 'perf/core' of ↵Ingo Molnar2011-07-015-134/+122
|\ | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing into perf/core
| * perf tools: Allow sort dimensions to be registered more than onceFrederic Weisbecker2011-06-301-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | So that the parent sort dimension can be registered twice: once if we add it as an explicit sort dimension (-s parent) and twice if we request a parent filter (-p foo). We'll have only one parent sort dimension in the end but this allows to override the default parent filter with we gave in "-p" option. The goal of this is to prepare to allow the use of "-s parent" and "-p foo" at the same time, ie: sort by filtered parent. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Stephane Eranian <eranian@google.com> Cc: David Ahern <dsahern@gmail.com> Cc: Sam Liao <phyomh@gmail.com>
| * perf tools: Don't display ignored entries on stdio uiFrederic Weisbecker2011-06-301-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As for newt ui, don't display entries that have been marked as ignored. The practical current effect of this is to make parent filtering really working. Before, entries that were ignored were given a null parent but were still displayed. This resulted in some weird effects: # Overhead Command Shared Object Symbol # ........ ........... ................. ............ # ^A | --- __lock_acquire | |--95.97%-- lock_acquire | | | |--30.75%-- _raw_spin_lock Discard these from the stdio display. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Stephane Eranian <eranian@google.com> Cc: David Ahern <dsahern@gmail.com> Cc: Sam Liao <phyomh@gmail.com>
| * perf tools: Remove sort print helpers declarationsFrederic Weisbecker2011-06-301-6/+0
| | | | | | | | | | | | | | | | | | | | | | | | These are probably some old leftovers. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Stephane Eranian <eranian@google.com> Cc: David Ahern <dsahern@gmail.com> Cc: Sam Liao <phyomh@gmail.com>
| * perf tools: Make sort operations staticFrederic Weisbecker2011-06-302-120/+99
| | | | | | | | | | | | | | | | | | | | | | | | These don't need to be globally visible. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Stephane Eranian <eranian@google.com> Cc: David Ahern <dsahern@gmail.com> Cc: Sam Liao <phyomh@gmail.com>
| * perf tools: Add inverted call graph report support.Sam Liao2011-06-303-2/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add "caller/callee" option to support inverted butterfly report, in the inverted report (with caller option), the call graph start from the callee's ancestor. Users can use such view to catch system's performance bottleneck from a sysprof like view. Using this option with specified sort order like pid gives us high level view of call graph statistics. Also add "-G" alias for inverted call graph. Signed-off-by: Sam Liao <phyomh@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Stephane Eranian <eranian@google.com> Cc: David Ahern <dsahern@gmail.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
* | Merge commit 'v3.0-rc5' into perf/coreIngo Molnar2011-07-012-1/+2
|\ \ | |/ |/| | | | | | | Merge reason: Pick up the latest fixes. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * Merge branch 'core-urgent-for-linus' of ↵Linus Torvalds2011-06-191-0/+1
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: rcu: Move RCU_BOOST #ifdefs to header file rcu: use softirq instead of kthreads except when RCU_BOOST=y rcu: Use softirq to address performance regression rcu: Simplify curing of load woes
| | * rcu: Use softirq to address performance regressionShaohua Li2011-06-141-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit a26ac2455ffcf3(rcu: move TREE_RCU from softirq to kthread) introduced performance regression. In an AIM7 test, this commit degraded performance by about 40%. The commit runs rcu callbacks in a kthread instead of softirq. We observed high rate of context switch which is caused by this. Out test system has 64 CPUs and HZ is 1000, so we saw more than 64k context switch per second which is caused by RCU's per-CPU kthread. A trace showed that most of the time the RCU per-CPU kthread doesn't actually handle any callbacks, but instead just does a very small amount of work handling grace periods. This means that RCU's per-CPU kthreads are making the scheduler do quite a bit of work in order to allow a very small amount of RCU-related processing to be done. Alex Shi's analysis determined that this slowdown is due to lock contention within the scheduler. Unfortunately, as Peter Zijlstra points out, the scheduler's real-time semantics require global action, which means that this contention is inherent in real-time scheduling. (Yes, perhaps someone will come up with a workaround -- otherwise, -rt is not going to do well on large SMP systems -- but this patch will work around this issue in the meantime. And "the meantime" might well be forever.) This patch therefore re-introduces softirq processing to RCU, but only for core RCU work. RCU callbacks are still executed in kthread context, so that only a small amount of RCU work runs in softirq context in the common case. This should minimize ksoftirqd execution, allowing us to skip boosting of ksoftirqd for CONFIG_RCU_BOOST=y kernels. Signed-off-by: Shaohua Li <shaohua.li@intel.com> Tested-by: "Alex,Shi" <alex.shi@intel.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
| * | Merge branch 'rc-fixes' of ↵Linus Torvalds2011-06-161-1/+1
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6 * 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6: kbuild: Call depmod.sh via shell perf: clear out make flags when calling kernel make kernelver
| | * | perf: clear out make flags when calling kernel make kernelverAndy Whitcroft2011-06-151-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When generating the perf version from the kernel version using 'make kernelver' it is necessary to clear out any MAKEFLAGS otherwise they may trigger additional output which pollute the contents. Signed-off-by: Andy Whitcroft <apw@canonical.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
* | | | Merge commit 'v3.0-rc3' into perf/coreIngo Molnar2011-06-161-6/+1
|\ \ \ \ | |/ / / | | | | | | | | | | | | | | | | Merge reason: add the latest fixes. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | Merge branch 'rc-fixes' of ↵Linus Torvalds2011-06-091-6/+1
| |\ \ \ | | |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6 * 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6: perf: Use make kernelversion instead of parsing the Makefile kbuild: Hack for depmod not handling X.Y versions kbuild: Move depmod call to a separate script kbuild: Fix <linux/version.h> for empty SUBLEVEL or PATCHLEVEL kbuild: Fix KERNELVERSION for empty SUBLEVEL or PATCHLEVEL kbuild: silence Nothing to be done for 'all' message
| | * | perf: Use make kernelversion instead of parsing the MakefileMichal Marek2011-06-091-6/+1
| | |/ | | | | | | | | | | | | | | | | | | | | | Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: Michal Marek <mmarek@suse.cz>
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