From: patchwork-bot+netdevbpf@kernel.org
To: Song Liu <song@kernel.org>
Cc: bpf@vger.kernel.org, ast@kernel.org, daniel@iogearbox.net,
andrii@kernel.org, kernel-team@meta.com
Subject: Re: [PATCH bpf-next] selftests/bpf: Use PERF_COUNT_HW_CPU_CYCLES event for get_branch_snapshot
Date: Fri, 07 Apr 2023 22:30:18 +0000 [thread overview]
Message-ID: <168090661857.32399.12892629908764782223.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <20230407190130.2093736-1-song@kernel.org>
Hello:
This patch was applied to bpf/bpf-next.git (master)
by Andrii Nakryiko <andrii@kernel.org>:
On Fri, 7 Apr 2023 12:01:30 -0700 you wrote:
> perf_event with type=PERF_TYPE_RAW and config=0x1b00 turned out to be not
> reliable in ensuring LBR is active. Thus, test_progs:get_branch_snapshot is
> not reliable in some systems. Replace it with PERF_COUNT_HW_CPU_CYCLES
> event, which gives more consistent results.
>
> Signed-off-by: Song Liu <song@kernel.org>
>
> [...]
Here is the summary with links:
- [bpf-next] selftests/bpf: Use PERF_COUNT_HW_CPU_CYCLES event for get_branch_snapshot
https://git.kernel.org/bpf/bpf-next/c/3ebf5212bf04
You are awesome, thank you!
--
Deet-doot-dot, I am a bot.
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prev parent reply other threads:[~2023-04-07 22:30 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-07 19:01 [PATCH bpf-next] selftests/bpf: Use PERF_COUNT_HW_CPU_CYCLES event for get_branch_snapshot Song Liu
2023-04-07 20:31 ` Jiri Olsa
2023-04-07 22:30 ` patchwork-bot+netdevbpf [this message]
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