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| author | Adrian Hunter <adrian.hunter@intel.com> | 2021-06-27 16:18:09 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2021-07-01 22:14:37 +0300 |
| commit | 291961fc3c28b4c1acfc3b03559aa14c286a6b0d (patch) | |
| tree | dd2653c0fb8d0a619e7ccdc72382d0e58560a2ba /tools/perf/Documentation/perf-script.txt | |
| parent | c435c166dcf526ac827bc964d82cc0d5e7a1fd0b (diff) | |
| download | linux-291961fc3c28b4c1acfc3b03559aa14c286a6b0d.tar.xz | |
perf script: Add API for filtering via dynamically loaded shared object
In some cases, users want to filter very large amounts of data (e.g.
from AUX area tracing like Intel PT) looking for something specific.
While scripting such as Python can be used, Python is 10 to 20 times
slower than C. So define a C API so that custom filters can be written
and loaded.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210627131818.810-2-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/Documentation/perf-script.txt')
| -rw-r--r-- | tools/perf/Documentation/perf-script.txt | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt index 48a5f5b26dd4..2306c81b606b 100644 --- a/tools/perf/Documentation/perf-script.txt +++ b/tools/perf/Documentation/perf-script.txt @@ -98,6 +98,10 @@ OPTIONS Generate perf-script.[ext] starter script for given language, using current perf.data. +--dlfilter=<file>:: + Filter sample events using the given shared object file. + Refer linkperf:perf-dlfilter[1] + -a:: Force system-wide collection. Scripts run without a <command> normally use -a by default, while scripts run with a <command> @@ -483,4 +487,5 @@ include::itrace.txt[] SEE ALSO -------- linkperf:perf-record[1], linkperf:perf-script-perl[1], -linkperf:perf-script-python[1], linkperf:perf-intel-pt[1] +linkperf:perf-script-python[1], linkperf:perf-intel-pt[1], +linkperf:perf-dlfilter[1] |