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| author | Adrian Hunter <adrian.hunter@intel.com> | 2022-09-05 10:34:20 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-10-04 14:55:21 +0300 |
| commit | a7fdd30a22448f17e942436b9db2a94b48218eb6 (patch) | |
| tree | 8af9e81c5fa6c506e9e5390259e424d34b1d86f0 /tools/perf/Documentation/perf-config.txt | |
| parent | c3ca8d44185cc2ac5ca75d2d38647979da5b0035 (diff) | |
| download | linux-a7fdd30a22448f17e942436b9db2a94b48218eb6.tar.xz | |
perf auxtrace: Add itrace option flag d+e to log on error
Add flag +e to the itrace d (decoder debug log) option to get output only
on decoding errors.
The log can be very big so reducing the output to where there are decoding
errors can be useful for analyzing errors.
By default, the log size in that case is 16384 bytes, but can be altered by
perf config e.g. perf config itrace.debug-log-buffer-size=30000
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Reviewed-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20220905073424.3971-3-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/Documentation/perf-config.txt')
| -rw-r--r-- | tools/perf/Documentation/perf-config.txt | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-config.txt b/tools/perf/Documentation/perf-config.txt index 0420e71698ee..39c890ead2dc 100644 --- a/tools/perf/Documentation/perf-config.txt +++ b/tools/perf/Documentation/perf-config.txt @@ -729,6 +729,13 @@ auxtrace.*:: If the directory does not exist or has the wrong file type, the current directory is used. +itrace.*:: + + debug-log-buffer-size:: + Log size in bytes to output when using the option --itrace=d+e + Refer 'itrace' option of linkperf:perf-script[1] or + linkperf:perf-report[1]. The default is 16384. + daemon.*:: daemon.base:: |