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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 08:55:21 -0300 |
| commit | a7fdd30a22448f17e942436b9db2a94b48218eb6 (patch) | |
| tree | 8af9e81c5fa6c506e9e5390259e424d34b1d86f0 /tools/perf/util/auxtrace.h | |
| parent | c3ca8d44185cc2ac5ca75d2d38647979da5b0035 (diff) | |
| download | linux-a7fdd30a22448f17e942436b9db2a94b48218eb6.tar.gz linux-a7fdd30a22448f17e942436b9db2a94b48218eb6.tar.bz2 linux-a7fdd30a22448f17e942436b9db2a94b48218eb6.zip | |
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/util/auxtrace.h')
| -rw-r--r-- | tools/perf/util/auxtrace.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/tools/perf/util/auxtrace.h b/tools/perf/util/auxtrace.h index 6a4fbfd34c6b..cb8e0a01abb6 100644 --- a/tools/perf/util/auxtrace.h +++ b/tools/perf/util/auxtrace.h @@ -60,6 +60,7 @@ enum itrace_period_type { #define AUXTRACE_ERR_FLG_DATA_LOST (1 << ('l' - 'a')) #define AUXTRACE_LOG_FLG_ALL_PERF_EVTS (1 << ('a' - 'a')) +#define AUXTRACE_LOG_FLG_ON_ERROR (1 << ('e' - 'a')) #define AUXTRACE_LOG_FLG_USE_STDOUT (1 << ('o' - 'a')) /** @@ -110,6 +111,7 @@ enum itrace_period_type { * @log_plus_flags: flags to affect what is logged * @log_minus_flags: flags to affect what is logged * @quick: quicker (less detailed) decoding + * @log_on_error_size: size of log to keep for outputting log only on errors */ struct itrace_synth_opts { bool set; @@ -155,6 +157,7 @@ struct itrace_synth_opts { unsigned int log_plus_flags; unsigned int log_minus_flags; unsigned int quick; + unsigned int log_on_error_size; }; /** |