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Vaibhav Nagarnaik discovered that since 3.10 a clean up patch made the

Browse source 
array index in the trace event format bogus. He supplied an elegant solution
 that uses __stringify() and also removes the need for the event_storage
 and event_storage_mutex and also cuts off a few K of overhead from
 the trace events.
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Merge tag 'trace-fixes-v3.14-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull trace fix from Steven Rostedt:
 "Vaibhav Nagarnaik discovered that since 3.10 a clean-up patch made the
  array index in the trace event format bogus.

  He supplied an elegant solution that uses __stringify() and also
  removes the need for the event_storage and event_storage_mutex and
  also cuts off a few K of overhead from the trace events"

* tag 'trace-fixes-v3.14-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing: Fix array size mismatch in format string
This commit is contained in:
Linus Torvalds 2014-03-20 22:09:30 -07:00
commit 477cc48484
4 changed files with 4 additions and 20 deletions
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4
include/linux/ftrace_event.h
View file

@ -495,10 +495,6 @@ enum {
FILTER_TRACE_FN,
};
#define EVENT_STORAGE_SIZE 128
extern struct mutex event_storage_mutex;
extern char event_storage[EVENT_STORAGE_SIZE];
extern int trace_event_raw_init(struct ftrace_event_call *call);
extern int trace_define_field(struct ftrace_event_call *call, const char *type,
const char *name, int offset, int size,