linux-kernel - Re: [PATCH] perf/powerpc: Cache the DWARF debug info

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Date:	Wed, 22 Oct 2014 10:46:59 -0700
From:	Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>
To:	Jiri Olsa <jolsa@...hat.com>
Cc:	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Anton Blanchard <anton@....ibm.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] perf/powerpc: Cache the DWARF debug info

Jiri Olsa [jolsa@...hat.com] wrote:
| > +			goto out;
| > +		}
| > +		dso->dwfl = dwfl;
| 
| so by this we get powerpc arch code sharing dw handle via dso object,
| but we have lot of generic code too ;-)

Well, this applies to powerpc...

| 
| could you make this happen for unwind__get_entries.. probably
| both sharing same generic code I guess

and unwind_get_entries() applies only to x86 and arm right ? ;-)
Or at least thats what the config/Makefile says.

I can take a look at unwind_get_entries(), but can you please merge
this fix for now, since the current performance is bad?

| 
| thanks,
| jirka

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