mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-08-29 04:09:39 +00:00
Code Issues Releases Wiki Activity

rcu: Stop disabling expedited RCU CPU stall warnings

Browse source 
Now that RCU expedited grace periods are always driven by a workqueue,
there is no need to account for signal reception, and thus no need
to disable expedited RCU CPU stall warnings due to signal reception.
This commit therefore removes the signal-reception checks, leaving a
WARN_ON() to catch possible future bugs.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
This commit is contained in:
Paul E. McKenney 2016-06-29 14:34:59 -07:00
parent 8b355e3bc1
commit 908d2c1fd1
1 changed files with 1 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
kernel/rcu/tree_exp.h
View file

@ -427,12 +427,7 @@ static void synchronize_sched_expedited_wait(struct rcu_state *rsp)
jiffies_stall);
if (ret > 0 || sync_rcu_preempt_exp_done(rnp_root))
return;
if (ret < 0) {
/* Hit a signal, disable CPU stall warnings. */
swait_event(rsp->expedited_wq,
sync_rcu_preempt_exp_done(rnp_root));
return;
}
WARN_ON(ret < 0); /* workqueues should not be signaled. */
pr_err("INFO: %s detected expedited stalls on CPUs/tasks: {",
rsp->name);
ndetected = 0;