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| author | Dongdong Deng <dongdong.deng@windriver.com> | 2010-09-28 16:32:43 +0800 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2010-10-07 10:41:06 -0700 |
| commit | 4ee0a603926cad973e4d384f48c5e279a0fd4118 (patch) | |
| tree | da507192551987d4841fccc541a5b94adfef4f01 /kernel/sched.c | |
| parent | b0a0f667a349247bd7f05f806b662a25653822bc (diff) | |
| download | op-kernel-dev-4ee0a603926cad973e4d384f48c5e279a0fd4118.zip op-kernel-dev-4ee0a603926cad973e4d384f48c5e279a0fd4118.tar.gz | |
rcu: using ACCESS_ONCE() to observe the jiffies_stall/rnp->qsmask value
Using ACCESS_ONCE() to observe the jiffies_stall/rnp->qsmask value
due to the caller didn't hold the root_rcu/rnp node's lock. Although
use without ACCESS_ONCE() is safe due to the value loaded being used
but once, the ACCESS_ONCE() is a good documentation aid -- the variables
are being loaded without the services of a lock.
Signed-off-by: Dongdong Deng <dongdong.deng@windriver.com>
CC: Dipankar Sarma <dipankar@in.ibm.com>
CC: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/sched.c')
0 files changed, 0 insertions, 0 deletions
