Re: [PATCH 1/3] mm, compaction: export tracepoints status strings to userspace

[Steven Rostedt <rostedt@goodmis.org>]

On Thu, 27 Aug 2015 17:24:02 +0200
Vlastimil Babka <vbabka@suse.cz> wrote:

> Some compaction tracepoints convert the integer return values to strings using
> the compaction_status_string array. This works for in-kernel printing, but not
> userspace trace printing of raw captured trace such as via trace-cmd report.
> 
> This patch converts the private array to appropriate tracepoint macros that
> result in proper userspace support.
> 
> trace-cmd output before:
> transhuge-stres-4235  [000]   453.149280: mm_compaction_finished: node=0
>   zone=ffffffff81815d7a order=9 ret=
> 
> after:
> transhuge-stres-4235  [000]   453.149280: mm_compaction_finished: node=0
>   zone=ffffffff81815d7a order=9 ret=partial
> 

Reviewed-by: Steven Rostedt <rostedt@goodmis.org>

-- Steve

> Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
> Cc: Steven Rostedt <rostedt@goodmis.org>
> Cc: Ingo Molnar <mingo@redhat.com>
> Cc: Mel Gorman <mgorman@suse.de>
> Cc: David Rientjes <rientjes@google.com>
> ---
>  include/trace/events/compaction.h | 33 +++++++++++++++++++++++++++++++--
>  mm/compaction.c                   | 11 -----------
>  2 files changed, 31 insertions(+), 13 deletions(-)
> 

--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org.  For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>