From: Frederic Weisbecker <fweisbec@gmail.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@elte.hu>, LKML <linux-kernel@vger.kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>,
Paul Mackerras <paulus@samba.org>,
Steven Rostedt <rostedt@goodmis.org>,
Arnaldo Carvalho de Melo <acme@redhat.com>
Subject: Re: [RFC][PATCH 2/3] perf: Take a hot regs snapshot for trace events
Date: Thu, 4 Mar 2010 20:01:40 +0100 [thread overview]
Message-ID: <20100304190135.GA28830@nowhere> (raw)
In-Reply-To: <1267605529.25158.75.camel@laptop>
On Wed, Mar 03, 2010 at 09:38:49AM +0100, Peter Zijlstra wrote:
> 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));
> > +#endif
>
> 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.
Actually I can't, as there doesn't seem to be a way to write
regs->ip in a generic way :-s
next prev parent reply other threads:[~2010-03-04 19:01 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-03 6:54 [GIT PULL] perf updates Frederic Weisbecker
2010-03-03 6:55 ` [PATCH 1/3] lockdep: Move lock events under lockdep recursion protection Frederic Weisbecker
2010-03-09 7:18 ` Hitoshi Mitake
2010-03-10 0:10 ` Frederic Weisbecker
2010-03-09 8:34 ` Jens Axboe
2010-03-09 8:35 ` Jens Axboe
2010-03-10 0:05 ` Frederic Weisbecker
2010-03-10 15:45 ` Peter Zijlstra
2010-03-10 15:56 ` Jens Axboe
2010-03-10 15:55 ` Jens Axboe
2010-03-09 23:45 ` Frederic Weisbecker
2010-03-10 15:55 ` Jens Axboe
2010-03-03 6:55 ` [RFC][PATCH 2/3] perf: Take a hot regs snapshot for trace events Frederic Weisbecker
2010-03-03 8:38 ` Peter Zijlstra
2010-03-03 20:07 ` Frederic Weisbecker
2010-03-04 19:01 ` Frederic Weisbecker [this message]
2010-03-05 3:08 ` [PATCH 0/2] Perf " Frederic Weisbecker
2010-03-05 3:08 ` [PATCH 1/2] perf: Introduce new perf_save_regs() for hot regs snapshot Frederic Weisbecker
2010-03-05 15:08 ` Masami Hiramatsu
2010-03-05 16:38 ` Frederic Weisbecker
2010-03-05 17:08 ` Masami Hiramatsu
2010-03-05 17:17 ` Frederic Weisbecker
2010-03-05 20:55 ` [PATCH 1/2] perf: Introduce new perf_fetch_caller_regs() " Frederic Weisbecker
2010-03-05 20:55 ` [PATCH 2/2] perf: Take a hot regs snapshot for trace events Frederic Weisbecker
2010-03-05 3:08 ` Frederic Weisbecker
2010-03-03 16:06 ` [RFC][PATCH 2/3] " Steven Rostedt
2010-03-03 16:37 ` Peter Zijlstra
2010-03-03 17:07 ` Steven Rostedt
2010-03-03 17:16 ` Peter Zijlstra
2010-03-03 17:45 ` Steven Rostedt
2010-03-03 20:37 ` Frederic Weisbecker
2010-03-04 11:25 ` Ingo Molnar
2010-03-04 15:16 ` Steven Rostedt
2010-03-04 15:36 ` Ingo Molnar
2010-03-04 15:55 ` Steven Rostedt
2010-03-04 21:17 ` Ingo Molnar
2010-03-04 21:30 ` Steven Rostedt
2010-03-04 21:37 ` Frederic Weisbecker
2010-03-04 21:52 ` Thomas Gleixner
2010-03-04 22:01 ` Frederic Weisbecker
2010-03-04 22:02 ` Steven Rostedt
2010-03-04 22:09 ` Frederic Weisbecker
2010-03-03 6:55 ` [PATCH 3/3] perf/x86-64: Use frame pointer to walk on irq and process stacks Frederic Weisbecker
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