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| author | Mark Brown <broonie@linaro.org> | 2014-03-06 17:44:28 +0800 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2014-03-06 17:44:28 +0800 |
| commit | d083f580e5b940834a93ab741cdf064f0324dc0f (patch) | |
| tree | d034075e47d68179d2f8bf7220d26bef0ba740d3 /lib/percpu-refcount.c | |
| parent | 931f27c6e892fdfe98896055e0df7962e21969d9 (diff) | |
| parent | 13ff50c85846338bb9820abd3933227b678dc086 (diff) | |
Merge tag 'parse-val' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap into asoc-core
regmap: Add parse_val() API
This is useful for generic code built on top of regmap dealing with
blocks of data.
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); |