rcu: Remove the now-obsolete PROVE_RCU_REPEATEDLY Kconfig option
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>
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@ -4490,10 +4490,6 @@ void lockdep_rcu_suspicious(const char *file, const int line, const char *s)
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{
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{
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struct task_struct *curr = current;
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struct task_struct *curr = current;
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#ifndef CONFIG_PROVE_RCU_REPEATEDLY
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if (!debug_locks_off())
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return;
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#endif /* #ifdef CONFIG_PROVE_RCU_REPEATEDLY */
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/* Note: the following can be executed concurrently, so be careful. */
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/* Note: the following can be executed concurrently, so be careful. */
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pr_warn("\n");
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pr_warn("\n");
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pr_warn("=============================\n");
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pr_warn("=============================\n");
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@ -79,9 +79,7 @@ static void __init rcu_bootup_announce_oddness(void)
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pr_info("\tHierarchical RCU autobalancing is disabled.\n");
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pr_info("\tHierarchical RCU autobalancing is disabled.\n");
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if (IS_ENABLED(CONFIG_RCU_FAST_NO_HZ))
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if (IS_ENABLED(CONFIG_RCU_FAST_NO_HZ))
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pr_info("\tRCU dyntick-idle grace-period acceleration is enabled.\n");
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pr_info("\tRCU dyntick-idle grace-period acceleration is enabled.\n");
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if (IS_ENABLED(CONFIG_PROVE_RCU_REPEATEDLY))
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if (IS_ENABLED(CONFIG_PROVE_RCU))
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pr_info("\tRCU lockdep checking is permanently enabled.\n");
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else if (IS_ENABLED(CONFIG_PROVE_RCU))
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pr_info("\tRCU lockdep checking is enabled.\n");
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pr_info("\tRCU lockdep checking is enabled.\n");
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if (RCU_NUM_LVLS >= 4)
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if (RCU_NUM_LVLS >= 4)
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pr_info("\tFour(or more)-level hierarchy is enabled.\n");
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pr_info("\tFour(or more)-level hierarchy is enabled.\n");
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@ -1306,20 +1306,6 @@ menu "RCU Debugging"
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config PROVE_RCU
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config PROVE_RCU
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def_bool PROVE_LOCKING
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def_bool PROVE_LOCKING
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config PROVE_RCU_REPEATEDLY
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bool "RCU debugging: don't disable PROVE_RCU on first splat"
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depends on PROVE_RCU
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default n
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help
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By itself, PROVE_RCU will disable checking upon issuing the
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first warning (or "splat"). This feature prevents such
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disabling, allowing multiple RCU-lockdep warnings to be printed
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on a single reboot.
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Say Y to allow multiple RCU-lockdep warnings per boot.
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Say N if you are unsure.
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config SPARSE_RCU_POINTER
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config SPARSE_RCU_POINTER
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bool "RCU debugging: sparse-based checks for pointer usage"
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bool "RCU debugging: sparse-based checks for pointer usage"
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default n
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default n
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@ -8,7 +8,6 @@ CONFIG_NO_HZ_IDLE=n
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CONFIG_NO_HZ_FULL=n
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CONFIG_NO_HZ_FULL=n
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CONFIG_RCU_TRACE=y
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CONFIG_RCU_TRACE=y
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CONFIG_PROVE_LOCKING=y
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CONFIG_PROVE_LOCKING=y
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CONFIG_PROVE_RCU_REPEATEDLY=y
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#CHECK#CONFIG_PROVE_RCU=y
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#CHECK#CONFIG_PROVE_RCU=y
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CONFIG_DEBUG_LOCK_ALLOC=y
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CONFIG_DEBUG_LOCK_ALLOC=y
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CONFIG_DEBUG_OBJECTS=y
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CONFIG_DEBUG_OBJECTS=y
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@ -13,7 +13,6 @@ CONFIG_NO_HZ_FULL -- Do two, one with partial CPU enablement.
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CONFIG_PREEMPT -- Do half. (First three and #8.)
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CONFIG_PREEMPT -- Do half. (First three and #8.)
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CONFIG_PROVE_LOCKING -- Do several, covering CONFIG_DEBUG_LOCK_ALLOC=y and not.
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CONFIG_PROVE_LOCKING -- Do several, covering CONFIG_DEBUG_LOCK_ALLOC=y and not.
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CONFIG_PROVE_RCU -- Hardwired to CONFIG_PROVE_LOCKING.
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CONFIG_PROVE_RCU -- Hardwired to CONFIG_PROVE_LOCKING.
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CONFIG_PROVE_RCU_REPEATEDLY -- Do one.
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CONFIG_RCU_BOOST -- one of PREEMPT_RCU.
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CONFIG_RCU_BOOST -- one of PREEMPT_RCU.
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CONFIG_RCU_FANOUT -- Cover hierarchy, but overlap with others.
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CONFIG_RCU_FANOUT -- Cover hierarchy, but overlap with others.
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CONFIG_RCU_FANOUT_LEAF -- Do one non-default.
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CONFIG_RCU_FANOUT_LEAF -- Do one non-default.
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