Doug / smarc-fsl-linux-kernel

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Commit 81e59494a56cb14f559886c345c4a93fb576bbab

Authored by Paul E. McKenney
1 parent 6231069bda
Exists in smarc-l5.0.0_1.0.0-ga and in 5 other branches imx_3.10.17_1.0.1_ga, imx_3.10.53_1.1.0_ga, imx_3.14.28_1.0.0_ga, smarc-imx_3.10.53_1.1.0_ga, smarc-imx_3.14.28_1.0.0_ga

rcu: Tone down debugging during boot-up and shutdown. 

In some situations, randomly delaying RCU grace-period initialization
can cause more trouble than help.  This commit therefore restricts this
type of RCU self-torture to runtime, giving it a rest during boot and
shutdown.

Reported-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

Showing 1 changed file with 2 additions and 1 deletions Side-by-side Diff

... ... @@ -1319,7 +1319,8 @@
1319 1319 rnp->grphi, rnp->qsmask);
1320 1320 raw_spin_unlock_irq(&rnp->lock);
1321 1321 #ifdef CONFIG_PROVE_RCU_DELAY
1322   - if ((random32() % (rcu_num_nodes * 8)) == 0)
  1322 + if ((random32() % (rcu_num_nodes * 8)) == 0 &&
  1323 + system_state == SYSTEM_RUNNING)
1323 1324 schedule_timeout_uninterruptible(2);
1324 1325 #endif /* #ifdef CONFIG_PROVE_RCU_DELAY */
1325 1326 cond_resched();