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| author | Ingo Molnar <mingo@kernel.org> | 2014-02-02 09:45:39 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-02-02 09:45:39 +0100 |
| commit | eaa4e4fcf1b5c60e656d93242f7fe422173f25b2 (patch) | |
| tree | c05d5d6ca3f625d72a9d136b4c485d3dc9472089 /lib/percpu-refcount.c | |
| parent | be1e4e760d940c14d119bffef5eb007dfdf29046 (diff) | |
| parent | 5cb480f6b488128140c940abff3c36f524a334a8 (diff) | |
Merge branch 'linus' into sched/core, to resolve conflicts
Conflicts:
kernel/sysctl.c
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'lib/percpu-refcount.c')
| -rw-r--r-- | lib/percpu-refcount.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/percpu-refcount.c b/lib/percpu-refcount.c index 1a53d497a8c5..963b7034a51b 100644 --- a/lib/percpu-refcount.c +++ b/lib/percpu-refcount.c @@ -120,6 +120,9 @@ static void percpu_ref_kill_rcu(struct rcu_head *rcu) atomic_add((int) count - PCPU_COUNT_BIAS, &ref->count); + WARN_ONCE(atomic_read(&ref->count) <= 0, "percpu ref <= 0 (%i)", + atomic_read(&ref->count)); + /* @ref is viewed as dead on all CPUs, send out kill confirmation */ if (ref->confirm_kill) ref->confirm_kill(ref); |