linux-kernel - [PATCH linux-next 2/2] perf: Return EACCESS when need perfmon capability

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Message-Id: <20241223070650.2810747-3-luogengkun@huaweicloud.com>
Date: Mon, 23 Dec 2024 07:06:50 +0000
From: Luo Gengkun <luogengkun@...weicloud.com>
To: peterz@...radead.org
Cc: mingo@...hat.com,
	acme@...nel.org,
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Subject: [PATCH linux-next 2/2] perf: Return EACCESS when need perfmon capability

For perf_allow_kernel and perf_allow_cpu, both return EACCES when require
CAP_PERFMON or CAP_SYS_ADMIN permissions, so update perf_allow_tracepoint
to keep them the same.

Signed-off-by: Luo Gengkun <luogengkun@...weicloud.com>
---
 include/linux/perf_event.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 5d2ec4283ebf..c1bc0d7a275b 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -1685,7 +1685,7 @@ static inline int perf_allow_cpu(void)
 static inline int perf_allow_tracepoint(void)
 {
 	if (sysctl_perf_event_paranoid > -1 && !perfmon_capable())
-		return -EPERM;
+		return -EACCES;
 
 	return security_perf_event_open(PERF_SECURITY_TRACEPOINT);
 }
-- 
2.34.1