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(parent: 3d13ec2) | patch
ksym_tracer: Fix race when incrementing count
authorLi Zefan <lizf@cn.fujitsu.com>
Wed, 30 Dec 2009 06:23:40 +0000 (14:23 +0800)
committerIngo Molnar <mingo@elte.hu>
Wed, 30 Dec 2009 06:50:49 +0000 (07:50 +0100)
commite6d9491bf8ba6728cc86aeabbc688d20ec0563b5
tree1ca34f9f0608f688069da43688b2a9b8fa163644tree | snapshot (tar.gz zip)
parent3d13ec2efdb5843ad91e57b60d50b44d922cf063commit | diff
ksym_tracer: Fix race when incrementing count

We are under rcu read section but not holding the write lock, so
count++ is not atomic. Use atomic64_t instead.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: K.Prasad <prasad@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <4B3AF1EC.9010608@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
kernel/trace/trace_ksym.c diff | blob | blame | history