Re: [PATCH] perf test tsc: Fix error message report when not supported.

[Adrian Hunter]

On 02/04/2022 14.42, Chengdong Li wrote:
> By default `perf test tsc` does not return the error message
> when child process detected kernel does not support. Instead, child
> process print error message to stderr, unfortunately the stderr is
> redirected to /dev/null when verbose <= 0.
> This patch add a helper function test__perf_test_tsc_skip_reason() to
> help parent process to get the appropriate error message and force child
> process returns TEST_SKIP instead of TEST_OK.
> 
> Signed-off-by: Chengdong Li <chengdongli@xxxxxxxxxxx>
> ---
>  tools/perf/tests/builtin-test.c     |  3 +++
>  tools/perf/tests/perf-time-to-tsc.c | 17 +++++++++++------
>  tools/perf/tests/tests.h            |  1 +
>  3 files changed, 15 insertions(+), 6 deletions(-)
> 

Please base on current source, for example perf/core branch of:

	git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git