ksym_tracer: Fix race when incrementing count

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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>

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Li Zefan 2009-12-30 14:23:40 +08:00 • committed by Ingo Molnar

parent 3d13ec2efd

commit e6d9491bf8

1 changed files with 7 additions and 5 deletions

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kernel/trace/trace_ksym.c

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