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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2010-02-26 16:38:57 -0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-02-27 09:53:52 +0100 |
| commit | 0b1c87278a8c7e394022ec184a0b44a3886b6fde (patch) | |
| tree | d2dd63579227a4bf038766e7ba34d36242f08c4b /include | |
| parent | a47cd880b50e14b0b6f5e9d426ae9a2676c9c474 (diff) | |
| download | kernel-mfld-blackbay-0b1c87278a8c7e394022ec184a0b44a3886b6fde.tar.gz kernel-mfld-blackbay-0b1c87278a8c7e394022ec184a0b44a3886b6fde.tar.bz2 kernel-mfld-blackbay-0b1c87278a8c7e394022ec184a0b44a3886b6fde.zip | |
rcu: Make non-RCU_PROVE_LOCKING rcu_read_lock_sched_held() understand boot
Before the scheduler starts, all tasks are non-preemptible by
definition. So, during that time, rcu_read_lock_sched_held()
needs to always return "true". This patch makes that be so
for RCU_PROVE_LOCKING=n.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: laijs@cn.fujitsu.com
Cc: dipankar@in.ibm.com
Cc: mathieu.desnoyers@polymtl.ca
Cc: josh@joshtriplett.org
Cc: dvhltc@us.ibm.com
Cc: niv@us.ibm.com
Cc: peterz@infradead.org
Cc: rostedt@goodmis.org
Cc: Valdis.Kletnieks@vt.edu
Cc: dhowells@redhat.com
LKML-Reference: <1267231138-27856-2-git-send-email-paulmck@linux.vnet.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/rcupdate.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h index fcea332a842..c8437362633 100644 --- a/include/linux/rcupdate.h +++ b/include/linux/rcupdate.h @@ -166,7 +166,7 @@ static inline int rcu_read_lock_bh_held(void) static inline int rcu_read_lock_sched_held(void) { - return preempt_count() != 0; + return preempt_count() != 0 || !rcu_scheduler_active; } #endif /* #else #ifdef CONFIG_DEBUG_LOCK_ALLOC */ |