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H A D | builtin-stat.c | cca03c0a Tue Jun 23 06:42:49 CDT 2009 Jaswinder Singh Rajput <jaswinder@kernel.org> perf stat: Fix verbose for perf stat
Error message should use stderr for verbose (-v), otherwise message will be lost for:
$ ./perf stat -v <cmd> > /dev/null
For example on AMD bus-cycles event is not available so now it looks like:
$ ./perf stat -v -e bus-cycles ls > /dev/null Error: counter 0, sys_perf_counter_open() syscall returned with -1 (Invalid argument)
Performance counter stats for 'ls':
<not counted> bus-cycles
0.006765877 seconds time elapsed.
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <1245757369.3776.1.camel@localhost.localdomain> Signed-off-by: Ingo Molnar <mingo@elte.hu> cca03c0a Tue Jun 23 06:42:49 CDT 2009 Jaswinder Singh Rajput <jaswinder@kernel.org> perf stat: Fix verbose for perf stat Error message should use stderr for verbose (-v), otherwise message will be lost for: $ ./perf stat -v <cmd> > /dev/null For example on AMD bus-cycles event is not available so now it looks like: $ ./perf stat -v -e bus-cycles ls > /dev/null Error: counter 0, sys_perf_counter_open() syscall returned with -1 (Invalid argument) Performance counter stats for 'ls': <not counted> bus-cycles 0.006765877 seconds time elapsed. Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <1245757369.3776.1.camel@localhost.localdomain> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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