linux-kernel - [PATCH bpf-next v2] bpf: update bpf_get_smp_processor

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Message-Id: <20210914235400.59427-1-mcroce@linux.microsoft.com>
Date:   Wed, 15 Sep 2021 01:54:00 +0200
From:   Matteo Croce <mcroce@...ux.microsoft.com>
To:     bpf@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>, Yonghong Song <yhs@...com>
Subject: [PATCH bpf-next v2] bpf: update bpf_get_smp_processor_id() documentation

From: Matteo Croce <mcroce@...rosoft.com>

BPF programs run with migration disabled regardless of preemption, as
they are protected by migrate_disable().
Update the documentation accordingly.

Signed-off-by: Matteo Croce <mcroce@...rosoft.com>
---
 include/uapi/linux/bpf.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h
index d21326558d42..3e9785f1064a 100644
--- a/include/uapi/linux/bpf.h
+++ b/include/uapi/linux/bpf.h
@@ -1629,7 +1629,7 @@ union bpf_attr {
  * u32 bpf_get_smp_processor_id(void)
  * 	Description
  * 		Get the SMP (symmetric multiprocessing) processor id. Note that
- * 		all programs run with preemption disabled, which means that the
+ * 		all programs run with migration disabled, which means that the
  * 		SMP processor id is stable during all the execution of the
  * 		program.
  * 	Return
-- 
2.31.1