Re: [PATCH] perf: Fallback to MAP__FUNCTION if daddr maps are NULL

2014-08-21 Thread Arnaldo Carvalho de Melo
Em Thu, Aug 21, 2014 at 09:04:51AM +0200, Jiri Olsa escreveu: > On Wed, Aug 20, 2014 at 11:25:11PM -0400, Don Zickus wrote: > > As we run "perf c2c" on more applications, we noticed we're missing > > significant > > samples from a common customer's application. Looking at the > > /proc//maps file

Re: [PATCH] perf: Fallback to MAP__FUNCTION if daddr maps are NULL

2014-08-21 Thread Jiri Olsa
On Wed, Aug 20, 2014 at 11:25:11PM -0400, Don Zickus wrote: > As we run "perf c2c" on more applications, we noticed we're missing > significant > samples from a common customer's application. Looking at the > /proc//maps file for the app, we see "rwxs" and "rwxp" permissions on > many > of the s

[PATCH] perf: Fallback to MAP__FUNCTION if daddr maps are NULL

2014-08-20 Thread Don Zickus
As we run "perf c2c" on more applications, we noticed we're missing significant samples from a common customer's application. Looking at the /proc//maps file for the app, we see "rwxs" and "rwxp" permissions on many of the shared memory & heap regions, and on all the thread stacks. Because those