Re: [PATCH v2] perf test: Run test 126 exclusive

[Namhyung Kim]

On Wed, Apr 08, 2026 at 01:31:43PM +0200, Thomas Richter wrote:
> V1 --> V2 Fixed commit message
> 
> Running both tests cases 126 128 together causes the first test case
> 126 to fail:
>  # for i in $(seq 3); do ./perf test 126 128; done
>  126: perf trace BTF general tests    : FAILED!
>  128: perf trace record and replay    : Ok
>  126: perf trace BTF general tests    : FAILED!
>  128: perf trace record and replay    : Ok
>  126: perf trace BTF general tests    : FAILED!
>  128: perf trace record and replay    : Ok
>  #

The test numbers can be different on other platforms, let's use the test
names like below.

> 
> Test case 126 fails because test case 128 runs concurrently as can
> be observed using a ps -ef | grep perf output list on a different
> window. Both do a perf trace command concurrently.
> Make test case 'perf trace BTF general tests' exclusive.
> 
> Output after:
>  # for i in $(seq 3); do ./perf test 'perf trace BTF general tests' \
> 	'perf trace record and replay'; done
>  127: perf trace BTF general tests                   : Ok
>  155: perf trace record and replay                   : Ok
>  127: perf trace BTF general tests                   : Ok
>  155: perf trace record and replay                   : Ok
>  127: perf trace BTF general tests                   : Ok
>  155: perf trace record and replay                   : Ok
>  #

I believe I have a fix for this problem but it's blocked by a BPF
verifier issue.  I need to find time to work on it again..

https://lore.kernel.org/linux-perf-users/20250814071754.193265-1-namhyung@xxxxxxxxxx/

Until then, I think it's ok to have this.

Thanks,
Namhyung

> 
> Signed-off-by: Thomas Richter <tmricht@xxxxxxxxxxxxx>
> Cc: Howard Chu <howardchu95@xxxxxxxxx>
> ---
>  tools/perf/tests/shell/trace_btf_general.sh | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tools/perf/tests/shell/trace_btf_general.sh b/tools/perf/tests/shell/trace_btf_general.sh
> index ef2da806be6b..7a94a5743924 100755
> --- a/tools/perf/tests/shell/trace_btf_general.sh
> +++ b/tools/perf/tests/shell/trace_btf_general.sh
> @@ -1,5 +1,5 @@
>  #!/bin/bash
> -# perf trace BTF general tests
> +# perf trace BTF general tests (exclusive)
>  # SPDX-License-Identifier: GPL-2.0
>  
>  err=0
> -- 
> 2.53.0
>