Commit-ID: 7e7ca9a22dbbc5c91763cd16923c7509918709b6
Gitweb: http://git.kernel.org/tip/7e7ca9a22dbbc5c91763cd16923c7509918709b6
Author: Frederic Weisbecker <fweisbec@xxxxxxxxx>
AuthorDate: Sun, 19 Apr 2009 04:54:49 +0200
Committer: Ingo Molnar <mingo@xxxxxxx>
CommitDate: Wed, 22 Apr 2009 12:30:15 +0200
tracing/lock: provide lock_acquired event support for dynamic size string
Now that we can support the dynamic sized string, make the lock tracing
able to use it, making it safe against modules removal and consuming
the right amount of memory needed for each lock name
Changes in v2:
adapt to the __ending_string() updates and the opening_string() removal.
[ Impact: protect lock tracer against module removal ]
Signed-off-by: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
---
include/trace/events/lockdep.h | 6 +++---
1 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/include/trace/events/lockdep.h b/include/trace/events/lockdep.h
index 45e326b..3ca315c 100644
--- a/include/trace/events/lockdep.h
+++ b/include/trace/events/lockdep.h
@@ -38,16 +38,16 @@ TRACE_EVENT(lock_acquired,
TP_ARGS(lock, ip, waittime),
TP_STRUCT__entry(
- __field(const char *, name)
+ __string(name, lock->name)
__field(unsigned long, wait_usec)
__field(unsigned long, wait_nsec_rem)
),
TP_fast_assign(
- __entry->name = lock->name;
+ __assign_str(name, lock->name);
__entry->wait_nsec_rem = do_div(waittime, NSEC_PER_USEC);
__entry->wait_usec = (unsigned long) waittime;
),
- TP_printk("%s (%lu.%03lu us)", __entry->name, __entry->wait_usec,
+ TP_printk("%s (%lu.%03lu us)", __get_str(name), __entry->wait_usec,
__entry->wait_nsec_rem)
);
--
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