Messages in this thread Patch in this message | | | Date | Wed, 01 Apr 2015 21:56:58 -0400 | From | Steven Rostedt <> | Subject | [RFC][PATCH 10/17 v2] x86/tlb/trace: Export enums in used by tlb_flush tracepoint |
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From: "Steven Rostedt (Red Hat)" <rostedt@goodmis.org>
Have the enums used in __print_symbolic() by the trace_tlb_flush() tracepoint exported to userpace such that they can be parsed by userspace tools.
Cc: Dave Hansen <dave@sr71.net> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> --- include/trace/events/tlb.h | 30 +++++++++++++++++++++++++----- 1 file changed, 25 insertions(+), 5 deletions(-)
diff --git a/include/trace/events/tlb.h b/include/trace/events/tlb.h index 0e7635765153..4250f364a6ca 100644 --- a/include/trace/events/tlb.h +++ b/include/trace/events/tlb.h @@ -7,11 +7,31 @@ #include <linux/mm_types.h> #include <linux/tracepoint.h> -#define TLB_FLUSH_REASON \ - { TLB_FLUSH_ON_TASK_SWITCH, "flush on task switch" }, \ - { TLB_REMOTE_SHOOTDOWN, "remote shootdown" }, \ - { TLB_LOCAL_SHOOTDOWN, "local shootdown" }, \ - { TLB_LOCAL_MM_SHOOTDOWN, "local mm shootdown" } +#define TLB_FLUSH_REASON \ + EM( TLB_FLUSH_ON_TASK_SWITCH, "flush on task switch" ) \ + EM( TLB_REMOTE_SHOOTDOWN, "remote shootdown" ) \ + EM( TLB_LOCAL_SHOOTDOWN, "local shootdown" ) \ + EMe( TLB_LOCAL_MM_SHOOTDOWN, "local mm shootdown" ) + +/* + * First define the enums in TLB_FLUSH_REASON to be exported to userspace + * via TRACE_DEFINE_ENUM(). + */ +#undef EM +#undef EMe +#define EM(a,b) TRACE_DEFINE_ENUM(a); +#define EMe(a,b) TRACE_DEFINE_ENUM(a); + +TLB_FLUSH_REASON + +/* + * Now redefine the EM() and EMe() macros to map the enums to the strings + * that will be printed in the output. + */ +#undef EM +#undef EMe +#define EM(a,b) { a, b }, +#define EMe(a,b) { a, b } TRACE_EVENT_CONDITION(tlb_flush, -- 2.1.4
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