Messages in this thread | | | Date | Wed, 27 Jun 2012 21:40:40 +0800 | Subject | Re: [PATCH] perf: fix wrong hw_breakpoint documentation | From | Jovi Zhang <> |
| |
Hi Kim,
> It should be a bug in event parser. I guess the patch below will fix it: > > > diff --git a/tools/perf/util/parse-events.l b/tools/perf/util/parse-events.l > index 488362e14133..aafca33a8a09 100644 > --- a/tools/perf/util/parse-events.l > +++ b/tools/perf/util/parse-events.l > @@ -76,7 +76,7 @@ num_hex 0x[a-fA-F0-9]+ > num_raw_hex [a-fA-F0-9]+ > name [a-zA-Z_*?][a-zA-Z0-9_*?]* > modifier_event [ukhpGH]{1,8} > -modifier_bp [rwx] > +modifier_bp [rwx]+ >
that should also be fine, but it will export rx/wx interface to user, and rx/wx mostly not supported on many architecture. Perhaps this issue is very tiny :)
[root@jovi perf]# ./perf stat -e mem:0x080652c8:rx -e mem:0x0 -- /usr/bin/ls > /dev/null
Performance counter stats for '/usr/bin/ls':
<not supported> mem:0x80652c8:rx 0 mem:(nil):rw
0.006728643 seconds time elapsed -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |