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2016-02-05perf inject: Add jitdump mmap injection supportStephane Eranian1-0/+7
This patch adds a --jit/-j option to perf inject. This options injects MMAP records into the perf.data file to cover the jitted code mmaps. It also emits ELF images for each function in the jidump file. Those images are created where the jitdump file is. The MMAP records point to that location as well. Typical flow: $ perf record -k mono -- java -agentpath:libpjvmti.so java_class $ perf inject --jit -i perf.data -o perf.data.jitted $ perf report -i perf.data.jitted Note that jitdump.h support is not limited to Java, it works with any jitted environment modified to emit the jitdump file format, include those where code can be jitted multiple times and moved around. The jitdump.h format is adapted from the Oprofile project. The genelf.c (ELF binary generation) depends on MD5 hash encoding for the buildid. To enable this, libssl-dev must be installed. If not, then genelf.c defaults to using urandom to generate the buildid, which is not ideal. The Makefile auto-detects the presence on libssl-dev. This version mmaps the jitdump file to create a marker MMAP record in the perf.data file. The marker is used to detect jitdump and cause perf inject to inject the jitted mmaps and generate ELF images for jitted functions. In V8, the following fixes and changes were made among other things: - the jidump header format include a new flags field to be used to carry information about the configuration of the runtime agent. Contributed by: Adrian Hunter <adrian.hunter@intel.com> - Fix mmap pgoff: MMAP event pgoff must be the offset within the ELF file at which the code resides. Contributed by: Adrian Hunter <adrian.hunter@intel.com> - Fix ELF virtual addresses: perf tools expect the ELF virtual addresses of dynamic objects to match the file offset. Contributed by: Adrian Hunter <adrian.hunter@intel.com> - JIT MMAP injection does not obey finished_round semantics. JIT MMAP injection injects all MMAP events in one go, so it does not obey finished_round semantics, so drop the finished_round events from the output perf.data file. Contributed by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Stephane Eranian <eranian@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Carl Love <cel@us.ibm.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: John McCutchan <johnmccutchan@google.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Pawel Moll <pawel.moll@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sonny Rao <sonnyrao@chromium.org> Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Link: http://lkml.kernel.org/r/1448874143-7269-3-git-send-email-eranian@google.com [ Moved inject.build_ids ordering bits to a separate patch, fixed the NO_LIBELF=1 build ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-09-28perf inject: Add --strip option to strip out non-synthesized eventsAdrian Hunter1-0/+3
Add a new option --strip which is used with --itrace to strip out non-synthesized events. This results in a perf.data file that is simpler for external tools to parse. In particular, this can be used to prepare a perf.data file for consumption by autofdo. A subsequent patch makes a change to Intel PT also to enable use with autofdo and gives an example of that use. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1443186956-18718-25-git-send-email-adrian.hunter@intel.com [ Made it use perf_evlist__remove() + perf_evsel__delete() ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-08-21perf tools: Put itrace options into an asciidoc includeAdrian Hunter1-22/+1
perf script, report and inject all have the same itrace options. Put them into an asciidoc include file. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-10-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-05-05perf auxtrace: Add option to synthesize events for transactionsAdrian Hunter1-4/+5
Add AUX area tracing option 'x' to synthesize events for transactions. This will be used by Intel PT to synthesize an event record for each TSX start, commit or abort. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1430404667-10593-6-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-04-29perf inject: Add Instruction Tracing supportAdrian Hunter1-0/+26
Add support for decoding an AUX area assuming it contains instruction tracing data. The AUX area tracing events are stripped and replaced by synthesized events. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1428594864-29309-21-git-send-email-adrian.hunter@intel.com [ Do not use -Z as an alternative to --itrace ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2014-07-25perf inject: Add --kallsyms parameterAdrian Hunter1-0/+3
Let perf inject take --kallsyms parameter the same as perf script and perf report do. That is needed for decoding Instruction Trace data using a copy of /proc/kcore for the kernel object because the kallsyms path is used to locate that copy. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> 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/r/1406035081-14301-30-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-10-26perf inject: Merge sched_stat_* and sched_switch eventsAndrew Vagin1-0/+5
You may want to know where and how long a task is sleeping. A callchain may be found in sched_switch and a time slice in stat_iowait, so I add handler in perf inject for merging this events. My code saves sched_switch event for each process and when it meets stat_iowait, it reports the sched_switch event, because this event contains a correct callchain. By another words it replaces all stat_iowait events on proper sched_switch events. I use the next sequence of commands for testing: perf record -e sched:sched_stat_sleep -e sched:sched_switch \ -e sched:sched_process_exit -g -o ~/perf.data.raw \ ~/test-program perf inject -v -s -i ~/perf.data.raw -o ~/perf.data perf report --stdio -i ~/perf.data 100.00% foo [kernel.kallsyms] [k] __schedule | --- __schedule schedule | |--79.75%-- schedule_hrtimeout_range_clock | schedule_hrtimeout_range | poll_schedule_timeout | do_select | core_sys_select | sys_select | system_call_fastpath | __select | __libc_start_main | --20.25%-- do_nanosleep hrtimer_nanosleep sys_nanosleep system_call_fastpath __GI___libc_nanosleep __libc_start_main And here is test-program.c: #include<unistd.h> #include<time.h> #include<sys/select.h> int main() { struct timespec ts1; struct timeval tv1; int i; long s; for (i = 0; i < 10; i++) { ts1.tv_sec = 0; ts1.tv_nsec = 10000000; nanosleep(&ts1, NULL); tv1.tv_sec = 0; tv1.tv_usec = 40000; select(0, NULL, NULL, NULL,&tv1); } return 1; } Signed-off-by: Andrew Vagin <avagin@openvz.org> Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1344344165-369636-4-git-send-email-avagin@openvz.org [ committer note: Made it use evsel->handler ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-10-26perf inject: Work with filesAndrew Vagin1-0/+6
Before this patch "perf inject" can only handle data from pipe. I want to use "perf inject" for reworking events. Look at my following patch. v2: add information about new options in tools/perf/Documentation/ Signed-off-by: Andrew Vagin <avagin@openvz.org> Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1344344165-369636-2-git-send-email-avagin@openvz.org [ committer note: fixed it up to cope with 5852a44, 5ded57a, 002439e & f62d3f0 ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2010-05-04perf inject: Add missing bitsArnaldo Carvalho de Melo1-0/+35
New commands need to have Documentation and be added to command-list.txt so that they can appear when 'perf' is called withouth any subcommand: [root@doppio linux-2.6-tip]# perf usage: perf [--version] [--help] COMMAND [ARGS] The most commonly used perf commands are: annotate Read perf.data (created by perf record) and display annotated code archive Create archive with object files with build-ids found in perf.data file bench General framework for benchmark suites buildid-cache Manage build-id cache. buildid-list List the buildids in a perf.data file diff Read two perf.data files and display the differential profile inject Filter to augment the events stream with additional information kmem Tool to trace/measure kernel memory(slab) properties kvm Tool to trace/measure kvm guest os list List all symbolic event types lock Analyze lock events probe Define new dynamic tracepoints record Run a command and record its profile into perf.data report Read perf.data (created by perf record) and display the profile sched Tool to trace/measure scheduler properties (latencies) stat Run a command and gather performance counter statistics test Runs sanity tests. timechart Tool to visualize total system behavior during a workload top System profiling tool. trace Read perf.data (created by perf record) and display trace output See 'perf help COMMAND' for more information on a specific command. [root@doppio linux-2.6-tip]# The new 'perf inject' command hadn't so it wasn't appearing on that list. Also fix the long option, that should have no spaces in it, rename the faulty one to be '--build-ids', instead of '--inject build-ids'. Reported-by: Ingo Molnar <mingo@elte.hu> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>