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| author | Namhyung Kim <namhyung@kernel.org> | 2022-11-14 15:02:09 -0800 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-11-16 09:51:22 -0300 |
| commit | f5bc4428cc6e096170d35fc79a640d90e33dd9c3 (patch) | |
| tree | 6cb14d93c4c449d119ddd9c43b80217a957c2a94 /tools/perf | |
| parent | eb2d4514a5971444f67ac8b95bcd63e7702fa6bf (diff) | |
| download | linux-f5bc4428cc6e096170d35fc79a640d90e33dd9c3.tar.bz2 | |
perf stat: Clear screen only if output file is a tty
The --interval-clear option makes perf stat to clear the terminal at
each interval. But it doesn't need to clear the screen when it saves
to a file. Make it fail when it's enabled with the output options.
$ perf stat -I 1 --interval-clear -o myfile true
--interval-clear does not work with output
Usage: perf stat [<options>] [<command>]
-o, --output <file> output file name
--log-fd <n> log output to fd, instead of stderr
--interval-clear clear screen in between new interval
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Athira Jajeev <atrajeev@linux.vnet.ibm.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20221114230227.1255976-2-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/builtin-stat.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index d5e1670bca20..1d79801f4e84 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -2403,6 +2403,14 @@ int cmd_stat(int argc, const char **argv) } } + if (stat_config.interval_clear && !isatty(fileno(output))) { + fprintf(stderr, "--interval-clear does not work with output\n"); + parse_options_usage(stat_usage, stat_options, "o", 1); + parse_options_usage(NULL, stat_options, "log-fd", 0); + parse_options_usage(NULL, stat_options, "interval-clear", 0); + return -1; + } + stat_config.output = output; /* |