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rcu: Remove the now-obsolete PROVE_RCU_REPEATEDLY Kconfig option

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The PROVE_RCU_REPEATEDLY Kconfig option was initially added due to
the volume of messages from PROVE_RCU: Doing just one per boot would
have required excessive numbers of boots to locate them all.  However,
PROVE_RCU messages are now relatively rare, so there is no longer any
reason to need more than one such message per boot.  This commit therefore
removes the PROVE_RCU_REPEATEDLY Kconfig option.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Paul E. McKenney
2017-05-12 14:37:19 -07:00
parent 4e4bea7427
commit c4a09ff752
5 changed files with 1 additions and 23 deletions
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4
kernel/locking/lockdep.c
View File

@@ -4490,10 +4490,6 @@ void lockdep_rcu_suspicious(const char *file, const int line, const char *s)
{
struct task_struct *curr = current;
#ifndef CONFIG_PROVE_RCU_REPEATEDLY
if (!debug_locks_off())
return;
#endif /* #ifdef CONFIG_PROVE_RCU_REPEATEDLY */
/* Note: the following can be executed concurrently, so be careful. */
pr_warn("\n");
pr_warn("=============================\n");

4
kernel/rcu/tree_plugin.h
View File

@@ -79,9 +79,7 @@ static void __init rcu_bootup_announce_oddness(void)
pr_info("\tHierarchical RCU autobalancing is disabled.\n");
if (IS_ENABLED(CONFIG_RCU_FAST_NO_HZ))
pr_info("\tRCU dyntick-idle grace-period acceleration is enabled.\n");
if (IS_ENABLED(CONFIG_PROVE_RCU_REPEATEDLY))
pr_info("\tRCU lockdep checking is permanently enabled.\n");
else if (IS_ENABLED(CONFIG_PROVE_RCU))
if (IS_ENABLED(CONFIG_PROVE_RCU))
pr_info("\tRCU lockdep checking is enabled.\n");
if (RCU_NUM_LVLS >= 4)
pr_info("\tFour(or more)-level hierarchy is enabled.\n");