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| author | Paul E. McKenney <paul.mckenney@linaro.org> | 2011-10-31 15:01:54 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2011-12-11 10:31:42 -0800 |
| commit | 4145fa7fbee3ec1e61c52825b146192885d9759f (patch) | |
| tree | 58e0767a59bf110acb99da3fb5c1f0f0b5170be8 /include/trace | |
| parent | 9ceae0e248fb553c702d51d5275167d462f4efd2 (diff) | |
| download | linux-stable-4145fa7fbee3ec1e61c52825b146192885d9759f.tar.gz linux-stable-4145fa7fbee3ec1e61c52825b146192885d9759f.tar.bz2 linux-stable-4145fa7fbee3ec1e61c52825b146192885d9759f.zip | |
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.h | 15 |
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) |