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| author | Paul E. McKenney <paul.mckenney@linaro.org> | 2012-05-10 00:55:39 +0200 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2012-07-02 21:34:42 +0200 |
| commit | bf1304e9cd755be7814ac8365834b7a1d0f06b58 (patch) | |
| tree | 0bbbb761dc42af26e555e6257bd280e5d390fee0 /kernel | |
| parent | Revert "rcu: Move PREEMPT_RCU preemption to switch_to() invocation" (diff) | |
| download | linux-bf1304e9cd755be7814ac8365834b7a1d0f06b58.tar.xz linux-bf1304e9cd755be7814ac8365834b7a1d0f06b58.zip | |
rcu: Dump only the current CPU's buffers for idle-entry/exit warnings
Problems in RCU idle entry and exit are almost always confined to the
offending CPU. This commit therefore switches ftrace_dump() from
DUMP_ALL to DUMP_ORIG.
Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Tested-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Tested-by: Pascal Chapperon <pascal.chapperon@wanadoo.fr>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/rcutree.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/rcutree.c b/kernel/rcutree.c index 4b97bba7396e..6eb48f13eeeb 100644 --- a/kernel/rcutree.c +++ b/kernel/rcutree.c @@ -358,7 +358,7 @@ static void rcu_idle_enter_common(struct rcu_dynticks *rdtp, long long oldval) struct task_struct *idle = idle_task(smp_processor_id()); trace_rcu_dyntick("Error on entry: not idle task", oldval, 0); - ftrace_dump(DUMP_ALL); + ftrace_dump(DUMP_ORIG); WARN_ONCE(1, "Current pid: %d comm: %s / Idle pid: %d comm: %s", current->pid, current->comm, idle->pid, idle->comm); /* must be idle task! */ @@ -468,7 +468,7 @@ static void rcu_idle_exit_common(struct rcu_dynticks *rdtp, long long oldval) trace_rcu_dyntick("Error on exit: not idle task", oldval, rdtp->dynticks_nesting); - ftrace_dump(DUMP_ALL); + ftrace_dump(DUMP_ORIG); WARN_ONCE(1, "Current pid: %d comm: %s / Idle pid: %d comm: %s", current->pid, current->comm, idle->pid, idle->comm); /* must be idle task! */ |