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sched_ext: fix application of sizeof to pointer

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[ Upstream commit f24d192985 ]

sizeof when applied to a pointer typed expression gives the size of
the pointer.

The proper fix in this particular case is to code sizeof(*cpuset)
instead of sizeof(cpuset).

This issue was detected with the help of Coccinelle.

Fixes: 22a920209a ("sched_ext: Implement tickless support")
Signed-off-by: guanjing <guanjing@cmss.chinamobile.com>
Acked-by: Andrea Righi <arighi@nvidia.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
guanjing
2024-11-17 10:51:29 +08:00
committed by Greg Kroah-Hartman
parent cbe385d9ae
commit 00aca33249
1 changed files with 1 additions and 1 deletions
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tools/sched_ext/scx_central.c
+1 -1
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@@ -97,7 +97,7 @@ restart:
SCX_BUG_ON(!cpuset, "Failed to allocate cpuset");
CPU_ZERO(cpuset);
CPU_SET(skel->rodata->central_cpu, cpuset);
SCX_BUG_ON(sched_setaffinity(0, sizeof(cpuset), cpuset),
SCX_BUG_ON(sched_setaffinity(0, sizeof(*cpuset), cpuset),
"Failed to affinitize to central CPU %d (max %d)",
skel->rodata->central_cpu, skel->rodata->nr_cpu_ids - 1);
CPU_FREE(cpuset);