- Sep 25, 2012
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Ingo Molnar authored
Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo: * Convert the trace builtins to use the growing evsel/evlist tracepoint infrastructure, removing several open coded constructs like switch like series of strcmp to dispatch events, etc. Basically what had already been showcased in 'perf sched'. * Add evsel constructor for tracepoints, that uses libtraceevent just to parse the /format events file, use it in a new 'perf test' to make sure the libtraceevent format parsing regressions can be more readily caught. * Some strange errors were happening in some builds, but not on the next, reported by several people, problem was some parser related files, generated during the build, didn't had proper make deps, fix from Eric Sandeen. * Fix some compiling errors on 32-bit, from Feng Tang. * Don't use sscanf extension %as, not available on bionic, reimplementation by Irina Tirdea. * Fix bfd.h/libbfd detection with recent binutils, from Markus Trippelsdorf. * Introduce struct and cache information about the environment where a perf.data file was captured, from Namhyung Kim. * Fix several error paths in libtraceevent, from Namhyung Kim. Print event causing perf_event_open() to fail in 'perf record', from Stephane Eranian. * New 'kvm' analysis tool, from Xiao Guangrong. Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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- Sep 24, 2012
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Namhyung Kim authored
Now alloc_arg returns NULL if memory allocation failed, it should be handled on callsites properly. Signed-off-by:
Namhyung Kim <namhyung@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung.kim@lge.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/87k3vpzbqo.fsf_-_@sejong.aot.lge.com Signed-off-by:
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Arnaldo Carvalho de Melo authored
So that we make sure the routines that do event format parsing are working on at least two well know scheduler tracepoints. Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> 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-g3rm9b3wtim4djx3z8dkftrj@git.kernel.org Signed-off-by:
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Arnaldo Carvalho de Melo authored
The existing constructor receives a perf_event_attr filled with the event type and the config. To reduce the boilerplate for tracepoints, provide a new constructor, perf_evsel__newtp() that receives the tracepoint name and will open the debugfs file, call into libtraceevent new pevent_parse_format file to fill its ->tp_format member, so that users can then just call perf_evsel__field() to access its fields. Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/n/tip-6du8dl1hz0y5l4cybodye7hn@git.kernel.org Signed-off-by:
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Arnaldo Carvalho de Melo authored
The pevent_parse_event() routine will parse a events/sys/tp/format file and add an event_format instance to the pevent struct. This patch introduces a pevent_parse_format() routine with just the bits needed to parse the event/sys/tp/format file and just return the event_format instance, useful for when all we want is to parse the format file, without requiring the pevent struct. Acked-by:
Steven Rostedt <rostedt@goodmis.org> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/n/tip-lge0afl47arh86om0m6a5bqr@git.kernel.org Signed-off-by:
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Arnaldo Carvalho de Melo authored
Cleaned event-parse.c this time, just propagate the errors and in handle them the call sites. Reviewed-by:
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Arnaldo Carvalho de Melo authored
Instead of dying, just use do_warning and let the goto that is there to take place. Reviewed-by:
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Arnaldo Carvalho de Melo authored
Replacing the equivalent open coded malloc + memset bits. Reviewed-by:
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Arnaldo Carvalho de Melo authored
Replacing the equivalent open coded malloc + sprintf bits. Reviewed-by:
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Markus Trippelsdorf authored
With recent binutils I get: perf % make Makefile:668: No bfd.h/libbfd found, install binutils-dev[el]/zlib-static to gain symbol demanglin That happens because bfd.h now contains: I've reopened a bug in the hope that this check will be deleted: http://sourceware.org/bugzilla/show_bug.cgi?id=14243 But in the meantime, the following patch fixes the problem Signed-off-by:
Markus Trippelsdorf <markus@trippelsdorf.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Mike Frysinger <vapier@gentoo.org> Cc: Paul Mackerras <paulus@samba.org> Link: http://lkml.kernel.org/r/20120919072902.GA262@x4 Signed-off-by:
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Namhyung Kim authored
The field should be freed on error paths. Signed-off-by:
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Namhyung Kim authored
The field should be freed on error paths. Signed-off-by:
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Namhyung Kim authored
When process_op failed, @arg will be freed on a caller with type of PRINT_OP. Thus free_arg() will try to free ->op.right field which can have stale value if something bad happens in the middle. Signed-off-by:
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Namhyung Kim authored
free_token() under out_free should be called with 'token' and no need to set *tok to NULL since it's set already. Signed-off-by:
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Irina Tirdea authored
perf uses sscanf extension %as to read and allocate a string in the same step. This is a non-standard extension only present in new versions of glibc. Replacing the use of sscanf and %as with strtok_r calls in order to parse a given string into its components. This is needed in Android since bionic does not support %as extension for sscanf. Reviewed-by:
Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Tested-by:
Irina Tirdea <irina.tirdea@intel.com> Acked-by:
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Namhyung Kim authored
Because its only user builtin-kvm::get_cpu_isa() has gone, It can be removed safely. In general, we have the feature information in perf_session_env already, no need to read it again. Signed-off-by:
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Namhyung Kim authored
We have processed and saved cpuid information to perf_session_env so reuse it for get_cpu_isa(). Signed-off-by:
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Namhyung Kim authored
As the @feat arg is not used anywhere, get rid of it from the signature. Signed-off-by:
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Namhyung Kim authored
From now on each feature information is processed and saved in perf header so that it can be used for printing. The event desc and branch stack features are not touched since they're not saved. Signed-off-by:
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Namhyung Kim authored
From now on each feature information is processed and saved in perf header so that it can be used wherever needed. The BRANCH_STACK feature is an exception since it needs nothing to be done. Signed-off-by:
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Namhyung Kim authored
The struct perf_session_env will preserve environment information at the time of perf record. It can be accessed anytime after parsing a perf.data file if needed. Signed-off-by:
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Arnaldo Carvalho de Melo authored
Use zalloc for the malloc+memset open coded sequence. Fix leak on the #ifdef'ed C state handling and when detecting invalid data in p_state_change(). Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> 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-v9x3q9rv4caxtox7wtjpchq5@git.kernel.org Signed-off-by:
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Arnaldo Carvalho de Melo authored
Following the model of 'perf sched': . raw_field_value searches first on the common fields, that are unused in this tool . Leave using perf_evsel__intval to the actual handlers, some may not need to incur some of the cost because they may not need all the fields values. . Using perf_session__set_tracepoints_handlers will save all those strcmp to find the right handler at sample processing time, do it just once and get the handler from evsel->handler.func. Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> 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-v9x3q9rv4caxtox7wtjpchq5@git.kernel.org Signed-off-by:
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Arnaldo Carvalho de Melo authored
Following the model of 'perf sched': . raw_field_value searches first on the common fields, that are unused in this tool . Using perf_session__set_tracepoints_handlers will save all those strcmp to find the right handler at sample processing time, do it just once and get the handler from evsel->handler.func. Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> 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-v9x3q9rv4caxtox7wtjpchq5@git.kernel.org Signed-off-by:
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Arnaldo Carvalho de Melo authored
Using plain raw_field_value(evsel->tp_format) will look at the common fields as well, and since this tool doesn't need those, speed it up a bit by looking at just the event specific fields. Also in general use just evsel and sample, just like was done in 'perf sched'. v2: Fixed up test against evsel->name, that contains the subsys name too, by David Ahern. Cc: David Ahern <dsahern@gmail.com> Cc: Dong Hao <haodong@linux.vnet.ibm.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Cc: Runzhen Wang <runzhen@linux.vnet.ibm.com> Link: http://lkml.kernel.org/n/tip-v9x3q9rv4caxtox7wtjpchq5@git.kernel.org Signed-off-by:
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- Sep 21, 2012
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Xiao Guangrong authored
Add 'perf kvm stat' support to analyze kvm vmexit/mmio/ioport smartly Usage: - kvm stat run a command and gather performance counter statistics, it is the alias of perf stat - trace kvm events: perf kvm stat record, or, if other tracepoints are interesting as well, we can append the events like this: perf kvm stat record -e timer:* -a If many guests are running, we can track the specified guest by using -p or --pid, -a is used to track events generated by all guests. - show the result: perf kvm stat report The output example is following: 13005 13059 total 2 guests are running on the host Then, track the guest whose pid is 13059: ^C[ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.253 MB perf.data.guest (~11065 samples) ] See the vmexit events: Analyze events for all VCPUs: VM-EXIT Samples Samples% Time% Avg time APIC_ACCESS 460 70.55% 0.01% 22.44us ( +- 1.75% ) HLT 93 14.26% 99.98% 832077.26us ( +- 10.42% ) EXTERNAL_INTERRUPT 64 9.82% 0.00% 35.35us ( +- 14.21% ) PENDING_INTERRUPT 24 3.68% 0.00% 9.29us ( +- 31.39% ) CR_ACCESS 7 1.07% 0.00% 8.12us ( +- 5.76% ) IO_INSTRUCTION 3 0.46% 0.00% 18.00us ( +- 11.79% ) EXCEPTION_NMI 1 0.15% 0.00% 5.83us ( +- -nan% ) Total Samples:652, Total events handled time:77396109.80us. See the mmio events: Analyze events for all VCPUs: MMIO Access Samples Samples% Time% Avg time 0xfee00380:W 387 84.31% 79.28% 8.29us ( +- 3.32% ) 0xfee00300:W 24 5.23% 9.96% 16.79us ( +- 1.97% ) 0xfee00300:R 24 5.23% 7.83% 13.20us ( +- 3.00% ) 0xfee00310:W 24 5.23% 2.93% 4.94us ( +- 3.84% ) Total Samples:459, Total events handled time:4044.59us. See the ioport event: Analyze events for all VCPUs: IO Port Access Samples Samples% Time% Avg time 0xc050:POUT 3 100.00% 100.00% 13.75us ( +- 10.83% ) Total Samples:3, Total events handled time:41.26us. And, --vcpu is used to track the specified vcpu and --key is used to sort the result: Analyze events for VCPU 0: VM-EXIT Samples Samples% Time% Avg time HLT 27 13.85% 99.97% 405790.24us ( +- 12.70% ) EXTERNAL_INTERRUPT 13 6.67% 0.00% 27.94us ( +- 22.26% ) APIC_ACCESS 146 74.87% 0.03% 21.69us ( +- 2.91% ) IO_INSTRUCTION 2 1.03% 0.00% 17.77us ( +- 20.56% ) CR_ACCESS 2 1.03% 0.00% 8.55us ( +- 6.47% ) PENDING_INTERRUPT 5 2.56% 0.00% 6.27us ( +- 3.94% ) Total Samples:195, Total events handled time:10959950.90us. Signed-off-by:Dong Hao <haodong@linux.vnet.ibm.com> Signed-off-by:
Runzhen Wang <runzhen@linux.vnet.ibm.com> [ Dong Hao <haodong@linux.vnet.ibm.com> Runzhen Wang <runzhen@linux.vnet.ibm.com>: - rebase it on current acme's tree - fix the compiling-error on i386 ] Signed-off-by:
Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Acked-by:
David Ahern <dsahern@gmail.com> Cc: Avi Kivity <avi@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: kvm@vger.kernel.org Cc: Runzhen Wang <runzhen@linux.vnet.ibm.com> Link: http://lkml.kernel.org/r/1347870675-31495-4-git-send-email-haodong@linux.vnet.ibm.com Signed-off-by:
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Xiao Guangrong authored
Exporting KVM exit information to userspace to be consumed by perf. Signed-off-by:
Marcelo Tosatti <mtosatti@redhat.com> Cc: Avi Kivity <avi@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: kvm@vger.kernel.org Cc: Runzhen Wang <runzhen@linux.vnet.ibm.com> Link: http://lkml.kernel.org/r/1347870675-31495-2-git-send-email-haodong@linux.vnet.ibm.com Signed-off-by:
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Eric Sandeen authored
Parallel builds of perf were failing for me on a 32p box, with: * new build flags or prefix util/pmu.l:7:23: error: pmu-bison.h: No such file or directory ... make: *** [util/pmu-flex.o] Error 1 make: *** Waiting for unfinished jobs.... This can pretty quickly be seen by adding a sleep in front of the bison calls in tools/perf/Makefile and running make -j4 on a smaller box i.e.: sleep 10; $(QUIET_BISON)$(BISON) -v util/pmu.y -d -o $(OUTPUT)util/pmu-bison.c Adding the following dependencies fixes it for me. Signed-off-by:Eric Sandeen <sandeen@redhat.com> Reviewed-by:
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Stephane Eranian authored
Got tired of not getting the event that caused the perf_event_open() syscall to fail. So I fixed the error message. This is very useful when monitoring lots of events in a single run. Signed-off-by:
Stephane Eranian <eranian@google.com> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20120920161945.GA7064@quad Signed-off-by:
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- Sep 20, 2012
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Borislav Petkov authored
I get this warning: arch/x86/kernel/kprobes.c:544:23: warning: ‘skip_singlestep’ declared ‘static’ but never defined on tip/auto-latest. Put the skip_singlestep function declaration up, in KPROBES_CAN_USE_FTRACE and drop the superfluous forward declaration. Signed-off-by:
Borislav Petkov <borislav.petkov@amd.com> Acked-by:
Ingo Molnar <mingo@kernel.org>
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Feng Tang authored
This patch fix a compile warning taken as error: CC util/map.o cc1: warnings being treated as errors util/map.c: In function ‘map__fprintf_dsoname’: util/map.c:240: error: ‘dsoname’ may be used uninitialized in this function make: *** [util/map.o] Error 1 Signed-off-by:
Feng Tang <feng.tang@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1346053107-11946-3-git-send-email-feng.tang@intel.com Signed-off-by:
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Feng Tang authored
On my x86_32 mahcine, there is a compile error: CC util/scripting-engines/trace-event-perl.o cc1: warnings being treated as errors util/scripting-engines/trace-event-perl.c: In function perl_process_tracepoint: util/scripting-engines/trace-event-perl.c:285: error: format expects type 'int', but argument 2 has type '__u64' make: *** [util/scripting-engines/trace-event-perl.o] Error 1 Fix it by using the "%PRIu64" for __u64. v2: use PRIu64 as suggested by Arnaldo. Signed-off-by:
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- Sep 19, 2012
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Dan Carpenter authored
The test should be >= ARRAY_SIZE() instead of > ARRAY_SIZE(). Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Acked-by:
Jiri Olsa <jolsa@redhat.com> Acked-by:
Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Link: http://lkml.kernel.org/r/20120905123126.GC6128@elgon.mountain Signed-off-by:
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Ingo Molnar authored
Merge branch 'uprobes/core' of git://git.kernel.org/pub/scm/linux/kernel/git/oleg/misc into perf/core Pull uprobes fixes + cleanups from Oleg Nesterov. Signed-off-by:
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Ingo Molnar authored
Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo: * Fix handling of unresolved samples when --symbols is used in 'report', from Feng Tang. * Add --symbols to 'script', similar to the one in 'report', from Feng Tang. * Add union member access support to 'probe', from Hyeoncheol Lee. * Make 'archive' work on Android, tweaking some of the utility parameters used (tar, rm), from Irina Tirdea. * Fixups to die() removal, from Namhyung Kim. * Render fixes for the TUI, from Namhyung Kim. * Don't enable annotation in non symbolic view, from Namhyung Kim. * Fix pipe mode in 'report', from Namhyung Kim. * Move related stats code from stat to util/, will be used by the 'stat' kvm tool, from Xiao Guangrong. * Add cpumask for uncore pmu, use it in 'stat', from Yan, Zheng. Signed-off-by:
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- Sep 18, 2012
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Yan, Zheng authored
If user doesn't explicitly specify CPU list, perf-stat only collects events on CPUs listed in the PMU cpumask file. Signed-off-by:
"Yah, Zheng" <zheng.z.yan@intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1347263631-23175-3-git-send-email-zheng.z.yan@intel.com Signed-off-by:
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Yan, Zheng authored
This patch adds a cpumask file to the uncore pmu sysfs directory. The cpumask file contains one active cpu for every socket. Signed-off-by:
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Namhyung Kim authored
The perf_hpp__init() function was only called from setup_browser() so that the pipe-mode missed the initialization thus didn't respond to related options. Fix it. Reported-by:
Robert Richter <robert.richter@amd.com> Tested-by:
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Feng Tang authored
So that other perf commands/browser has a way to dig out the available scripts info in system, this is a preparation for the script browser. Signed-off-by:
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Feng Tang authored
So that event_analyzing_sample.py can be shown by "perf script -l" Signed-off-by:
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