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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2017-06-07 00:49:39 +0200 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2017-08-17 16:26:05 +0200 |
| commit | bedbb648efe178c8e4708ada272536744d0f8118 (patch) | |
| tree | fff326f8c18e695532b6fba77c8d211421b5fdf1 /kernel/rcu | |
| parent | rcu: Create reasonable API for do_exit() TASKS_RCU processing (diff) | |
| download | linux-bedbb648efe178c8e4708ada272536744d0f8118.tar.xz linux-bedbb648efe178c8e4708ada272536744d0f8118.zip | |
rcu: Add TPS() to event-traced strings
Strings used in event tracing need to be specially handled, for example,
using the TPS() macro. Without the TPS() macro, although output looks
fine from within a running kernel, extracting traces from a crash dump
produces garbage instead of strings. This commit therefore adds the TPS()
macro to some unadorned strings that were passed to event-tracing macros.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/rcu')
| -rw-r--r-- | kernel/rcu/tree_plugin.h | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h index bb9e6e43130f..14ba496a13cd 100644 --- a/kernel/rcu/tree_plugin.h +++ b/kernel/rcu/tree_plugin.h @@ -2073,7 +2073,7 @@ wait_again: /* Wait for callbacks to appear. */ if (!rcu_nocb_poll) { - trace_rcu_nocb_wake(my_rdp->rsp->name, my_rdp->cpu, "Sleep"); + trace_rcu_nocb_wake(my_rdp->rsp->name, my_rdp->cpu, TPS("Sleep")); swait_event_interruptible(my_rdp->nocb_wq, !READ_ONCE(my_rdp->nocb_leader_sleep)); raw_spin_lock_irqsave(&my_rdp->nocb_lock, flags); @@ -2083,7 +2083,7 @@ wait_again: raw_spin_unlock_irqrestore(&my_rdp->nocb_lock, flags); } else if (firsttime) { firsttime = false; /* Don't drown trace log with "Poll"! */ - trace_rcu_nocb_wake(my_rdp->rsp->name, my_rdp->cpu, "Poll"); + trace_rcu_nocb_wake(my_rdp->rsp->name, my_rdp->cpu, TPS("Poll")); } /* @@ -2111,7 +2111,7 @@ wait_again: schedule_timeout_interruptible(1); } else { trace_rcu_nocb_wake(my_rdp->rsp->name, my_rdp->cpu, - "WokeEmpty"); + TPS("WokeEmpty")); } goto wait_again; } @@ -2155,7 +2155,7 @@ wait_again: static void nocb_follower_wait(struct rcu_data *rdp) { for (;;) { - trace_rcu_nocb_wake(rdp->rsp->name, rdp->cpu, "FollowerSleep"); + trace_rcu_nocb_wake(rdp->rsp->name, rdp->cpu, TPS("FollowerSleep")); swait_event_interruptible(rdp->nocb_wq, READ_ONCE(rdp->nocb_follower_head)); if (smp_load_acquire(&rdp->nocb_follower_head)) { @@ -2163,7 +2163,7 @@ static void nocb_follower_wait(struct rcu_data *rdp) return; } WARN_ON(signal_pending(current)); - trace_rcu_nocb_wake(rdp->rsp->name, rdp->cpu, "WokeEmpty"); + trace_rcu_nocb_wake(rdp->rsp->name, rdp->cpu, TPS("WokeEmpty")); } } @@ -2198,7 +2198,7 @@ static int rcu_nocb_kthread(void *arg) rdp->nocb_follower_tail = &rdp->nocb_follower_head; raw_spin_unlock_irqrestore(&rdp->nocb_lock, flags); BUG_ON(!list); - trace_rcu_nocb_wake(rdp->rsp->name, rdp->cpu, "WokeNonEmpty"); + trace_rcu_nocb_wake(rdp->rsp->name, rdp->cpu, TPS("WokeNonEmpty")); /* Each pass through the following loop invokes a callback. */ trace_rcu_batch_start(rdp->rsp->name, |