Re: [RFC][PATCH 2/3] perf: Take a hot regs snapshot for traceevents
From: Peter Zijlstra
Date: Wed Mar 03 2010 - 05:07:48 EST
On Wed, 2010-03-03 at 07:55 +0100, Frederic Weisbecker wrote:
> + * Hot regs snapshot support -- arch specific
> + * This needs to be a macro because we want the current
> + * frame pointer.
> + */
> +#ifndef PERF_SAVE_REGS
> +#define PERF_SAVE_REGS(regs) memset(regs, 0, sizeof(*regs));
It would be nice to have the fallback at least set the current or
calling IP, now you've basically wrecked stuff for everything !x86.
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