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authorPaul E. McKenney <paul.mckenney@linaro.org>2011-10-31 15:01:54 -0700
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2011-12-11 10:31:42 -0800
commit4145fa7fbee3ec1e61c52825b146192885d9759f (patch)
tree58e0767a59bf110acb99da3fb5c1f0f0b5170be8 /include/trace
parent9ceae0e248fb553c702d51d5275167d462f4efd2 (diff)
downloadlinux-linaro-stable-4145fa7fbee3ec1e61c52825b146192885d9759f.tar.gz
rcu: Deconfuse dynticks entry-exit tracing
The trace_rcu_dyntick() trace event did not print both the old and the new value of the nesting level, and furthermore printed only the low-order 32 bits of it. This could result in some confusion when interpreting trace-event dumps, so this commit prints both the old and the new value, prints the full 64 bits, and also selects the process-entry/exit increment to print nicely in hexadecimal. Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Diffstat (limited to 'include/trace')
-rw-r--r--include/trace/events/rcu.h15
1 files changed, 9 insertions, 6 deletions
diff --git a/include/trace/events/rcu.h b/include/trace/events/rcu.h
index 172620a92b1a..c29fb2f55909 100644
--- a/include/trace/events/rcu.h
+++ b/include/trace/events/rcu.h
@@ -246,21 +246,24 @@ TRACE_EVENT(rcu_fqs,
*/
TRACE_EVENT(rcu_dyntick,
- TP_PROTO(char *polarity, int nesting),
+ TP_PROTO(char *polarity, long long oldnesting, long long newnesting),
- TP_ARGS(polarity, nesting),
+ TP_ARGS(polarity, oldnesting, newnesting),
TP_STRUCT__entry(
__field(char *, polarity)
- __field(int, nesting)
+ __field(long long, oldnesting)
+ __field(long long, newnesting)
),
TP_fast_assign(
__entry->polarity = polarity;
- __entry->nesting = nesting;
+ __entry->oldnesting = oldnesting;
+ __entry->newnesting = newnesting;
),
- TP_printk("%s %d", __entry->polarity, __entry->nesting)
+ TP_printk("%s %llx %llx", __entry->polarity,
+ __entry->oldnesting, __entry->newnesting)
);
/*
@@ -470,7 +473,7 @@ TRACE_EVENT(rcu_torture_read,
#define trace_rcu_unlock_preempted_task(rcuname, gpnum, pid) do { } while (0)
#define trace_rcu_quiescent_state_report(rcuname, gpnum, mask, qsmask, level, grplo, grphi, gp_tasks) do { } while (0)
#define trace_rcu_fqs(rcuname, gpnum, cpu, qsevent) do { } while (0)
-#define trace_rcu_dyntick(polarity, nesting) do { } while (0)
+#define trace_rcu_dyntick(polarity, oldnesting, newnesting) do { } while (0)
#define trace_rcu_callback(rcuname, rhp, qlen) do { } while (0)
#define trace_rcu_kfree_callback(rcuname, rhp, offset, qlen) do { } while (0)
#define trace_rcu_batch_start(rcuname, qlen, blimit) do { } while (0)