linux-kernel - Re: [PATCH v3 bpf-next] bpf: Remove migrate_disable in kprobe_multi_link_prog

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Message-Id: 
 <175530180603.1311304.15839903815773107101.git-patchwork-notify@kernel.org>
Date: Fri, 15 Aug 2025 23:50:06 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Tao Chen <chen.dylane@...ux.dev>
Cc: song@...nel.org, jolsa@...nel.org, ast@...nel.org, daniel@...earbox.net,
 andrii@...nel.org, martin.lau@...ux.dev, eddyz87@...il.com,
 yonghong.song@...ux.dev, john.fastabend@...il.com, kpsingh@...nel.org,
 sdf@...ichev.me, haoluo@...gle.com, mattbobrowski@...gle.com,
 rostedt@...dmis.org, mhiramat@...nel.org, mathieu.desnoyers@...icios.com,
 bpf@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-trace-kernel@...r.kernel.org
Subject: Re: [PATCH v3 bpf-next] bpf: Remove migrate_disable in
 kprobe_multi_link_prog_run

Hello:

This patch was applied to bpf/bpf-next.git (master)
by Andrii Nakryiko <andrii@...nel.org>:

On Thu, 14 Aug 2025 20:14:29 +0800 you wrote:
> Graph tracer framework ensures we won't migrate, kprobe_multi_link_prog_run
> called all the way from graph tracer, which disables preemption in
> function_graph_enter_regs, as Jiri and Yonghong suggested, there is no
> need to use migrate_disable. As a result, some overhead may will be reduced.
> And add cant_sleep check for __this_cpu_inc_return.
> 
> Fixes: 0dcac2725406 ("bpf: Add multi kprobe link")
> Signed-off-by: Tao Chen <chen.dylane@...ux.dev>
> 
> [...]

Here is the summary with links:
  - [v3,bpf-next] bpf: Remove migrate_disable in kprobe_multi_link_prog_run
    https://git.kernel.org/bpf/bpf-next/c/abdaf49be542

You are awesome, thank you!
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