lkml.org 
[lkml]   [2016]   [Aug]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v2 2/2] perf uprobe: Skip prologue if program compiled without optimization
On Thu, Aug 25, 2016 at 09:50:04PM +0900, Masami Hiramatsu wrote:

SNIP

> > After applying patch:
> >
> > $ ./perf probe -x ./test 'foo i'
> > $ cat /sys/kernel/debug/tracing/uprobe_events
> > p:probe_test/foo /home/ravi/test:0x0000000000000541 i=-4(%bp):s32
> >
> > $ ./perf record -e probe_test:foo ./test
> > $ ./perf script
> > test 6300 [001] 5877.879327: probe_test:foo: (400541) i=42
> >
> > No need to skip prologue for optimized case since debug info is correct
> > for each instructions for -O2 -g. For more details please visit:
> > https://bugzilla.redhat.com/show_bug.cgi?id=612253#c6
> >
> > Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>
>
> Looks good for me:)
>
> Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
>
> Jiri, Michael, please try this. Ravi's patch can fix your problem.

yes, that fixes the problem for me

thanks a lot,
jirka

\
 
 \ /
  Last update: 2016-09-17 09:57    [W:0.104 / U:0.572 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site