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From: Paolo Bonzini <pbonzini@redhat.com>
To: "Alex Bennée" <alex.bennee@linaro.org>
Cc: qemu-trivial@nongnu.org, crosthwaitepeter@gmail.com,
	qemu-devel@nongnu.org, aurelien@aurel32.net, rth@twiddle.net
Subject: Re: [Qemu-devel] [PATCH v4 01/11] tcg: add ability to dump /tmp/perf-<pid>.map files
Date: Tue, 4 Aug 2015 12:02:26 +0200	[thread overview]
Message-ID: <55C08DB2.1040207@redhat.com> (raw)
In-Reply-To: <87k2tblcxq.fsf@linaro.org>



On 04/08/2015 09:39, Alex Bennée wrote:
> At the point of a tb_flush all bets are off as we will re-generate all
> the blocks at potentially different locations in the translation buffer.
> However for most analysis cases you are unlikely to cause the code
> buffer to overflow. Most other uses of tb_flush are the result
> debugging.
> 
> I could add a printf when --perfmap is enabled to flag when a flush
> happens to signal to the user? I guess some more caveats in the flag
> description wouldn't hurt.
> 
> We could consider truncating and re-starting the JIT dump at each flush?

Yes, it makes sense to me.  printf + truncation would work.

Paolo

  reply	other threads:[~2015-08-04 10:02 UTC|newest]

Thread overview: 55+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-08-03  9:14 [Qemu-devel] [PATCH v4 00/11] qemu-log, perfmap and other logging tweaks Alex Bennée
2015-08-03  9:14 ` [Qemu-devel] [PATCH v4 01/11] tcg: add ability to dump /tmp/perf-<pid>.map files Alex Bennée
2015-08-03 13:40   ` Paolo Bonzini
2015-08-04  7:39     ` Alex Bennée
2015-08-04 10:02       ` Paolo Bonzini [this message]
2015-08-04 11:59       ` Aurelien Jarno
2015-08-04 12:55         ` Alex Bennée
2015-08-04 19:01           ` Aurelien Jarno
2015-08-04 12:15   ` Aurelien Jarno
2015-08-03  9:14 ` [Qemu-devel] [PATCH v4 02/11] tcg: light re-factor and pass down TranslationBlock Alex Bennée
2015-08-04 12:36   ` Aurelien Jarno
2016-02-03 18:38     ` Alex Bennée
2015-08-03  9:14 ` [Qemu-devel] [PATCH v4 03/11] qemu-log: correct help text for -d cpu Alex Bennée
2015-08-04 12:16   ` Aurelien Jarno
2015-08-04 15:11     ` Alex Bennée
2015-08-04 15:15       ` Peter Maydell
2015-08-04 15:21         ` Richard Henderson
2015-08-04 17:22           ` Alex Bennée
2015-08-04 18:09             ` Richard Henderson
2015-08-04 19:08               ` Alex Bennée
2015-08-04 19:16                 ` Richard Henderson
2015-09-15 19:28                   ` Peter Maydell
2015-09-15 19:41                     ` Richard Henderson
2015-08-03  9:14 ` [Qemu-devel] [PATCH v4 04/11] qemu-log: Avoid function call for disabled qemu_log_mask logging Alex Bennée
2015-08-04 12:17   ` Aurelien Jarno
2015-08-03  9:14 ` [Qemu-devel] [PATCH v4 05/11] qemu-log: Improve the "exec" TB execution logging Alex Bennée
2015-08-04 12:17   ` Aurelien Jarno
2015-08-10 19:40   ` Christopher Covington
2016-02-03 18:45     ` Alex Bennée
2015-08-03  9:14 ` [Qemu-devel] [PATCH v4 06/11] qemu-log: support simple pid substitution in logfile Alex Bennée
2015-08-04 12:17   ` Aurelien Jarno
2015-08-03  9:14 ` [Qemu-devel] [PATCH v4 07/11] qemu-log: new option -dfilter to limit output Alex Bennée
2015-08-04 12:21   ` Aurelien Jarno
2015-08-10 16:59   ` Christopher Covington
2015-08-10 18:30     ` Alex Bennée
2015-08-03  9:14 ` [Qemu-devel] [PATCH v4 08/11] qemu-log: dfilter-ise exec, out_asm, and op_opt Alex Bennée
2015-08-04 12:22   ` Aurelien Jarno
2015-08-03  9:14 ` [Qemu-devel] [PATCH v4 09/11] target-arm: dfilter support for in_asm, op, opt_op Alex Bennée
2015-08-04 12:23   ` Aurelien Jarno
2015-08-04 14:44   ` Richard Henderson
2015-08-04 17:26     ` Alex Bennée
2015-08-04 18:11       ` Richard Henderson
2015-08-03  9:14 ` [Qemu-devel] [PATCH v4 10/11] vl.c: log system invocation when enabled Alex Bennée
2015-08-04 12:30   ` Aurelien Jarno
2015-08-04 12:40   ` Peter Maydell
2015-08-04 12:46     ` Aurelien Jarno
2015-08-04 13:14       ` Peter Maydell
2015-08-04 15:12         ` Alex Bennée
2015-08-03  9:14 ` [Qemu-devel] [PATCH v4 11/11] cputlb: modernise the debug support Alex Bennée
2015-08-04 12:33   ` Aurelien Jarno
2016-02-03 18:54     ` Alex Bennée
2016-02-03 19:05       ` Peter Maydell
2016-02-04  7:03         ` Alex Bennée
2015-09-11  7:54 ` [Qemu-devel] [PATCH v4 00/11] qemu-log, perfmap and other logging tweaks Michael Tokarev
2015-09-11 14:07   ` Alex Bennée

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