- 30 May, 2013 1 commit
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David Ahern authored
Jiri reported hanging perf tests on latest acme's perf/core and bisected it to 87f303a9f: [jolsa@krava2 perf]$ cat /proc/sys/kernel/perf_event_paranoid 1 [jolsa@krava2 perf]$ ./perf record -C 0 kill Error: You may not have permission to collect %sstats. Consider tweaking /proc/sys/kernel/perf_event_paranoid: -1 - Not paranoid at all 0 - Disallow raw tracepoint access for unpriv 1 - Disallow cpu events for unpriv 2 - Disallow kernel profiling for unpriv Need to let default handling kickin for workload process. Reported-by:
Jiri Olsa <jolsa@redhat.com> Signed-off-by:
David Ahern <dsahern@gmail.com> Acked-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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- 29 May, 2013 19 commits
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Michael Ellerman authored
Make it explicit that the format attributes may define overlapping bit ranges. Unfortunately this was left unspecified originally, and all the examples show non-overlapping ranges. I don't believe this is an ABI change, as we are defining something that was previously undefined, but others may disagree. The POWER8 PMU would like to define overlapping ranges, as bit ranges in the event code have different meanings for certain events. It will also allow us to define an overarching "event" field, that encompasses all others. As far as I can see perf is comfortable with this change, however I am not sure if there are any other users of the interface. Signed-off-by:
Michael Ellerman <michael@ellerman.id.au> Acked-by:
Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1368199980-20283-1-git-send-email-jolsa@redhat.comSigned-off-by:
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Sukadev Bhattiprolu authored
Following patch added several Power7 events into /sys/devices/cpu/events. Document those events in the testing ABI. https://lists.ozlabs.org/pipermail/linuxppc-dev/2013-April/105167.htmlSigned-off-by:
Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: linuxppc-dev@ozlabs.org Link: http://lkml.kernel.org/r/20130406170623.GA900@us.ibm.comSigned-off-by:
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Sukadev Bhattiprolu authored
A set of Power7 events are often used for Cycles Per Instruction (CPI) stack analysis. Make these events available in sysfs (/sys/devices/cpu/events/) so they can be identified using their symbolic names: perf stat -e 'cpu/PM_CMPLU_STALL_DCACHE_MISS/' /bin/ls Signed-off-by:
Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: linuxppc-dev@ozlabs.org Link: http://lkml.kernel.org/r/20130406164803.GA408@us.ibm.comSigned-off-by:
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Rabin Vincent authored
Make lk use CROSS_COMPILE, in order to be able to cross compile perf again. Signed-off-by:
Rabin Vincent <rabin@rab.in> Cc: Ingo Molnar <mingo@kernel.org> Cc: Borislav Petkov <bp@suse.de> Link: http://lkml.kernel.org/r/1368822464-4887-1-git-send-email-rabin@rab.inSigned-off-by:
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Jiri Olsa authored
Removing cwdlen from struct perf_session as it's no longer used. Signed-off-by:
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Jiri Olsa authored
Removing frozen from perf_header struct as it's no longer used. Signed-off-by:
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Jiri Olsa authored
We have a one of the event open fallback case in __perf_evsel__open where we zero exclude_guest|exclude_host fields. This means there's no way for attr tests to find out what's the right value for those fields, so we need to check for both 0 and 1. Luckily we still have other event parsing tests for those fields. Signed-off-by:
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Jiri Olsa authored
The sample type for '-d' option is changed, because of the memory profiling patches from Stephane. The '-d' now adds PERF_SAMPLE_DATA_SRC sample_type. Signed-off-by:
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Jiri Olsa authored
Removing no longer needed ifdefs. Signed-off-by:
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Jiri Olsa authored
Moving paths config into config/Makefile. Signed-off-by:
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Jiri Olsa authored
Moving libnuma check config into config/Makefile Signed-off-by:
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Jiri Olsa authored
Moving stdlib check config into config/Makefile. Signed-off-by:
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Jiri Olsa authored
Moving libbfd check config into config/Makefile. Signed-off-by:
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Jiri Olsa authored
Moving libpython check config into config/Makefile. Signed-off-by:
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Jiri Olsa authored
Moving libperl check config into config/Makefile. Signed-off-by:
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Jiri Olsa authored
Moving gtk2 check config into config/Makefile. Signed-off-by:
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Jiri Olsa authored
Moving slang check config into config/Makefile. Signed-off-by:
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Jiri Olsa authored
Moving libaudit check config into config/Makefile. Signed-off-by:
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Jiri Olsa authored
Moving libunwind check config into config/Makefile. Signed-off-by:
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- 28 May, 2013 20 commits
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Jiri Olsa authored
Moving libdw check config into config/Makefile. Signed-off-by:
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Jiri Olsa authored
Moving libelf check config into config/Makefile. Signed-off-by:
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Jiri Olsa authored
Moving compiler and linker flags check into config/Makefile. Signed-off-by:
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Jiri Olsa authored
Moving programs check into config/Makefile. Signed-off-by:
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Jiri Olsa authored
Moving arch check into config/Makefile. Signed-off-by:
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Jiri Olsa authored
Adding automated test for testing the build process. To run it you need to be in perf directory or specify one with PERF variable. It's also possible to specify optional Makefile to test via MK variable. Whole suite is executed twice, the second time with O=/tmp/xxx option added. To run the whole suite: $ make -f tests/make - make_pure: cd . && make -f Makefile test: test -x ./perf - make_clean_all: cd . && make -f Makefile clean all test: test -x ./perf - make_python_perf_so: cd . && make -f Makefile python/perf.so test: test -f ./python/perf.so - make_debug: cd . && make -f Makefile DEBUG=1 test: test -x ./perf - make_no_libperl: cd . && make -f Makefile NO_LIBPERL=1 test: test -x ./perf You see command line for 'make_pure' test right away, and the output is stored into 'make_pure' file. To run simple test: $ make -f tests/make make_debug - make_debug: cd . && make -f Makefile DEBUG=1 test: test -x ./perf At this moment tests checks for successfull build and for existence of several built files. Additional after-build checks could be added. Signed-off-by: -
David Ahern authored
Information is available, so why not save it in case some command wants to use it. Signed-off-by:
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David Ahern authored
Number of samples needs to be greater 1 to have a variance. Fixes nan% in perf-kvm-live output. Signed-off-by:
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David Ahern authored
Save previous pointer and free on failure. Signed-off-by:
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David Ahern authored
message is currently shown as: Error: You may not have permission to collect %sstats. Consider tweaking /proc/sys/kernel/perf_event_paranoid: Note the %sstats. With patch this becomes: Error: You may not have permission to collect stats. Consider tweaking /proc/sys/kernel/perf_event_paranoid: Signed-off-by:
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Arnaldo Carvalho de Melo authored
Its 'multiple', not 'mutliple', noticed while preparing a talk for Linuxtag'13. 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-dzy9nl1ku7a5umddvdic4ibl@git.kernel.orgSigned-off-by:
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Jiri Olsa authored
The current logic is to attach pair to the leader hist_entry. Arguments of hist_entry__add_pair function were placed the other way round.. driving me crazy. I.e. list_add_tail expects (new_node, head). Signed-off-by:
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Jiri Olsa authored
There's missing change for hists__precompute to iterate either entries_collapsed or entries_in tree. The change was initiated for hists_compute_resort function in commit: 66f97ed3 perf diff: Use internal rb tree for compute resort but was missing for hists__precompute function changes. Signed-off-by:
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Namhyung Kim authored
Now an user can set a default value of --percent-limit option into the perfconfig file. $ cat ~/.perfconfig [report] percent-limit = 0.1 Signed-off-by:
Namhyung Kim <namhyung@kernel.org> Acked-by:
Pekka Enberg <penberg@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Pekka Enberg <penberg@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1368497347-9628-9-git-send-email-namhyung@kernel.orgSigned-off-by:
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Namhyung Kim authored
The --percent-limit option is for not showing small overhead entries in the output. Signed-off-by:
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Namhyung Kim authored
The --percent-limit option is for not showing small overhead entries in the output. Maybe we want to set a certain default value like 0.1. Signed-off-by:
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Namhyung Kim authored
The 'perf report'command is single-threaded, so no need to grab a lock. Although the fast path of pthread_mutex_[un]lock() is very fast, there's a ~3% gain by eliminating it when we have huge sample data. $ perf record -a -F 100000 -o perf.data.bench -- perf bench sched all $ perf record -e cycles:upp -o perf.data.before -- \ > perf report -i perf.data.bench --stdio > /dev/null ... apply this patch ... $ perf record -e cycles:upp -o perf.data.after -- \ > perf report -i perf.data.bench --stdio > /dev/null $ perf diff perf.data.{before,after} | grep pthread +0.02% libpthread-2.15.so [.] _pthread_cleanup_push_defer +0.02% libpthread-2.15.so [.] _pthread_cleanup_pop_restore 0.05% -0.05% perf [.] pthread_mutex_unlock@plt 0.05% -0.05% perf [.] pthread_mutex_lock@plt 1.01% -1.01% libpthread-2.15.so [.] pthread_mutex_lock 1.68% -1.68% libpthread-2.15.so [.] __pthread_mutex_unlock_usercnt 0.05% -0.05% libpthread-2.15.so [.] pthread_mutex_unlock Signed-off-by: -
Namhyung Kim authored
It's a preparation patch to eliminate unneeded locking in the perf report path. Signed-off-by:
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Namhyung Kim authored
Those _threaded() functions are needed to make hist tree handling thread-safe, but AFAICS the only thing it does is forcing it to use the intermediate 'collapsed' tree. This can be acheived by setting sort__need_collapse to 1 in cmd_top() so no need to keep those _threaded() variants. Signed-off-by:
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Namhyung Kim authored
If there's no sample, kernel and exact percent output at the header looked like "-nan%". Tested-by:
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