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| author | Steven Rostedt (Red Hat) <rostedt@goodmis.org> | 2014-03-21 08:23:38 -0400 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2014-03-21 13:11:41 -0400 |
| commit | bc4c426ee2431d1f717004d3bbaacbd819b544fd (patch) | |
| tree | f3b13ad5bf6b0977263bc690e44996e2ef22f0fe /include/trace | |
| parent | d88471cb8b17a72b1edf5ab62e1704d78373c066 (diff) | |
| download | linux-bc4c426ee2431d1f717004d3bbaacbd819b544fd.tar.gz | |
Revert "tracing: Move event storage for array from macro to standalone function"
I originally wrote commit 35bb4399bd0e to shrink the size of the overhead of tracepoints by several kilobytes. Later, I received a patch from Vaibhav Nagarnaik that fixed a bug in the same code that this commit touches. Not only did it fix a bug, it also removed code and shrunk the size of the overhead of trace events even more than this commit did. Since this commit is scheduled for 3.15 and Vaibhav's patch is already in mainline, I need to revert this patch in order to keep it from conflicting with Vaibhav's patch. Not to mention, Vaibhav's patch makes this patch obsolete. Link: http://lkml.kernel.org/r/20140320225637.0226041b@gandalf.local.home Cc: Vaibhav Nagarnaik <vnagarnaik@google.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'include/trace')
| -rw-r--r-- | include/trace/ftrace.h | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h index e15ae4010d51..d1d91875faa5 100644 --- a/include/trace/ftrace.h +++ b/include/trace/ftrace.h @@ -302,11 +302,15 @@ static struct trace_event_functions ftrace_event_type_funcs_##call = { \ #undef __array #define __array(type, item, len) \ do { \ + mutex_lock(&event_storage_mutex); \ BUILD_BUG_ON(len > MAX_FILTER_STR_VAL); \ - ret = ftrace_event_define_field(event_call, #type, len, \ - #item, offsetof(typeof(field), item), \ - sizeof(field.item), \ - is_signed_type(type), FILTER_OTHER); \ + snprintf(event_storage, sizeof(event_storage), \ + "%s[%d]", #type, len); \ + ret = trace_define_field(event_call, event_storage, #item, \ + offsetof(typeof(field), item), \ + sizeof(field.item), \ + is_signed_type(type), FILTER_OTHER); \ + mutex_unlock(&event_storage_mutex); \ if (ret) \ return ret; \ } while (0); |