path: root/tools/perf/Documentation/perf-lock.txt
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authorTejun Heo <>2010-02-17 10:50:50 +0900
committerFrederic Weisbecker <>2010-02-27 16:23:39 +0100
commit44ee63587dce85593c22497140db16f4e5027860 (patch)
tree0b3d45f9755080f1c7362a8a2eb69e326b0e2f85 /tools/perf/Documentation/perf-lock.txt
parent018cbffe6819f6f8db20a0a3acd9bab9bfd667e4 (diff)
percpu: Add __percpu sparse annotations to hw_breakpoint
Add __percpu sparse annotations to hw_breakpoint. These annotations are to make sparse consider percpu variables to be in a different address space and warn if accessed without going through percpu accessors. This patch doesn't affect normal builds. In kernel/hw_breakpoint.c, per_cpu(nr_task_bp_pinned, cpu)'s will trigger spurious noderef related warnings from sparse. Changing it to &per_cpu(nr_task_bp_pinned[0], cpu) will work around the problem but deemed to ugly by the maintainer. Leave it alone until better solution can be found. Signed-off-by: Tejun Heo <> Cc: Stephen Rothwell <> Cc: K.Prasad <> LKML-Reference: <> Signed-off-by: Frederic Weisbecker <>
Diffstat (limited to 'tools/perf/Documentation/perf-lock.txt')
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