diff options
| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2015-06-11 15:22:43 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2015-07-17 14:58:44 -0700 |
| commit | 75c27f119b6475d95374bdad872c6938b5c26196 (patch) | |
| tree | 2237d56548ca07707fe743a662e693b4cf3f429b /kernel/rcu | |
| parent | 9b683874504a57cfa97558d403c75e286e20c9ce (diff) | |
rcu: Remove CONFIG_RCU_CPU_STALL_INFO
The CONFIG_RCU_CPU_STALL_INFO has been default-y for a couple of
releases with no complaints, so it is time to eliminate this Kconfig
option entirely, so that the long-form RCU CPU stall warnings cannot
be disabled. This commit does just that.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/rcu')
| -rw-r--r-- | kernel/rcu/tree.h | 4 | ||||
| -rw-r--r-- | kernel/rcu/tree_plugin.h | 45 |
2 files changed, 0 insertions, 49 deletions
diff --git a/kernel/rcu/tree.h b/kernel/rcu/tree.h index faee5242d6ff..7c0b09d754a1 100644 --- a/kernel/rcu/tree.h +++ b/kernel/rcu/tree.h @@ -288,12 +288,10 @@ struct rcu_data { bool gpwrap; /* Possible gpnum/completed wrap. */ struct rcu_node *mynode; /* This CPU's leaf of hierarchy */ unsigned long grpmask; /* Mask to apply to leaf qsmask. */ -#ifdef CONFIG_RCU_CPU_STALL_INFO unsigned long ticks_this_gp; /* The number of scheduling-clock */ /* ticks this CPU has handled */ /* during and after the last grace */ /* period it is aware of. */ -#endif /* #ifdef CONFIG_RCU_CPU_STALL_INFO */ /* 2) batch handling */ /* @@ -388,9 +386,7 @@ struct rcu_data { #endif /* #ifdef CONFIG_RCU_NOCB_CPU */ /* 8) RCU CPU stall data. */ -#ifdef CONFIG_RCU_CPU_STALL_INFO unsigned int softirq_snap; /* Snapshot of softirq activity. */ -#endif /* #ifdef CONFIG_RCU_CPU_STALL_INFO */ int cpu; struct rcu_state *rsp; diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h index 7234f03e0aa2..ef41c1b04ba6 100644 --- a/kernel/rcu/tree_plugin.h +++ b/kernel/rcu/tree_plugin.h @@ -82,8 +82,6 @@ static void __init rcu_bootup_announce_oddness(void) pr_info("\tRCU lockdep checking is enabled.\n"); if (IS_ENABLED(CONFIG_RCU_TORTURE_TEST_RUNNABLE)) pr_info("\tRCU torture testing starts during boot.\n"); - if (IS_ENABLED(CONFIG_RCU_CPU_STALL_INFO)) - pr_info("\tAdditional per-CPU info printed with stalls.\n"); if (RCU_NUM_LVLS >= 4) pr_info("\tFour(or more)-level hierarchy is enabled.\n"); if (RCU_FANOUT_LEAF != 16) @@ -418,8 +416,6 @@ static void rcu_print_detail_task_stall(struct rcu_state *rsp) rcu_print_detail_task_stall_rnp(rnp); } -#ifdef CONFIG_RCU_CPU_STALL_INFO - static void rcu_print_task_stall_begin(struct rcu_node *rnp) { pr_err("\tTasks blocked on level-%d rcu_node (CPUs %d-%d):", @@ -431,18 +427,6 @@ static void rcu_print_task_stall_end(void) pr_cont("\n"); } -#else /* #ifdef CONFIG_RCU_CPU_STALL_INFO */ - -static void rcu_print_task_stall_begin(struct rcu_node *rnp) -{ -} - -static void rcu_print_task_stall_end(void) -{ -} - -#endif /* #else #ifdef CONFIG_RCU_CPU_STALL_INFO */ - /* * Scan the current list of tasks blocked within RCU read-side critical * sections, printing out the tid of each. @@ -1685,8 +1669,6 @@ early_initcall(rcu_register_oom_notifier); #endif /* #else #if !defined(CONFIG_RCU_FAST_NO_HZ) */ -#ifdef CONFIG_RCU_CPU_STALL_INFO - #ifdef CONFIG_RCU_FAST_NO_HZ static void print_cpu_stall_fast_no_hz(char *cp, int cpu) @@ -1775,33 +1757,6 @@ static void increment_cpu_stall_ticks(void) raw_cpu_inc(rsp->rda->ticks_this_gp); } -#else /* #ifdef CONFIG_RCU_CPU_STALL_INFO */ - -static void print_cpu_stall_info_begin(void) -{ - pr_cont(" {"); -} - -static void print_cpu_stall_info(struct rcu_state *rsp, int cpu) -{ - pr_cont(" %d", cpu); -} - -static void print_cpu_stall_info_end(void) -{ - pr_cont("} "); -} - -static void zero_cpu_stall_ticks(struct rcu_data *rdp) -{ -} - -static void increment_cpu_stall_ticks(void) -{ -} - -#endif /* #else #ifdef CONFIG_RCU_CPU_STALL_INFO */ - #ifdef CONFIG_RCU_NOCB_CPU /* |