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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2016-06-29 14:34:59 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2016-08-22 09:30:26 -0700 |
| commit | 908d2c1fd156d414008e1b7e1fb5a7716e013231 (patch) | |
| tree | d809541bf135fd933a30bf05a326ee3318023846 /kernel/rcu | |
| parent | 8b355e3bc1408be238ae4695fb6318ae502cae8e (diff) | |
| download | linux-stable-908d2c1fd156d414008e1b7e1fb5a7716e013231.tar.gz linux-stable-908d2c1fd156d414008e1b7e1fb5a7716e013231.tar.bz2 linux-stable-908d2c1fd156d414008e1b7e1fb5a7716e013231.zip | |
rcu: Stop disabling expedited RCU CPU stall warnings
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>
Diffstat (limited to 'kernel/rcu')
| -rw-r--r-- | kernel/rcu/tree_exp.h | 7 |
1 files changed, 1 insertions, 6 deletions
diff --git a/kernel/rcu/tree_exp.h b/kernel/rcu/tree_exp.h index 97f5ffe42b58..3a647eb96f23 100644 --- a/kernel/rcu/tree_exp.h +++ b/kernel/rcu/tree_exp.h @@ -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; |