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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2016-06-29 14:49:29 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2016-08-22 09:30:26 -0700 |
| commit | 24a6cff286030b98149ff10b968cba31280fcb7a (patch) | |
| tree | bf2fed6066e2700818e15d30d1d002337b69e341 /kernel/rcu | |
| parent | 908d2c1fd156d414008e1b7e1fb5a7716e013231 (diff) | |
| download | linux-24a6cff286030b98149ff10b968cba31280fcb7a.tar.gz linux-24a6cff286030b98149ff10b968cba31280fcb7a.tar.bz2 linux-24a6cff286030b98149ff10b968cba31280fcb7a.zip | |
rcu: Make expedited RCU CPU stall warnings respond to controls
The expedited RCU CPU stall warnings currently responds to neither the
panic_on_rcu_stall sysctl setting nor the rcupdate.rcu_cpu_stall_suppress
kernel boot parameter. This commit therefore updates the expedited code
to respond to these two controls.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/rcu')
| -rw-r--r-- | kernel/rcu/tree_exp.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/rcu/tree_exp.h b/kernel/rcu/tree_exp.h index 3a647eb96f23..f316683b18f1 100644 --- a/kernel/rcu/tree_exp.h +++ b/kernel/rcu/tree_exp.h @@ -428,6 +428,9 @@ static void synchronize_sched_expedited_wait(struct rcu_state *rsp) if (ret > 0 || sync_rcu_preempt_exp_done(rnp_root)) return; WARN_ON(ret < 0); /* workqueues should not be signaled. */ + if (rcu_cpu_stall_suppress) + continue; + panic_on_rcu_stall(); pr_err("INFO: %s detected expedited stalls on CPUs/tasks: {", rsp->name); ndetected = 0; |