From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>, LKML <linux-kernel@vger.kernel.org>,
Steven Rostedt <rostedt@goodmis.org>,
Thomas Gleixner <tglx@linutronix.de>,
Mike Galbraith <efault@gmx.de>, Paul Mackerras <paulus@samba.org>,
Arnaldo Carvalho de Melo <acme@redhat.com>,
Lai Jiangshan <laijs@cn.fujitsu.com>,
Anton Blanchard <anton@samba.org>, Li Zefan <lizf@cn.fujitsu.com>,
Zhaolei <zhaolei@cn.fujitsu.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>,
"K . Prasad" <prasad@linux.vnet.ibm.com>,
Alan Stern <stern@rowland.harvard.edu>
Subject: Re: [RFC][PATCH 5/5] perfcounter: Add support for kernel hardware breakpoints
Date: Thu, 23 Jul 2009 15:08:13 +0200 [thread overview]
Message-ID: <1248354493.26273.2.camel@twins> (raw)
In-Reply-To: <1248109687-7808-6-git-send-email-fweisbec@gmail.com>
On Mon, 2009-07-20 at 13:08 -0400, Frederic Weisbecker wrote:
> This adds the support for kernel hardware breakpoints in perfcounter.
> It is added as a new type of software counter and can be defined by
> using the counter number 5 and by passsing the address of the
> breakpoint to set through the config attribute.
Is there a limit to these hardware breakpoints? If so, the software
counter model is not sufficient, since we assume we can always schedule
all software counters. However if you were to add more counters than you
have hardware breakpoints you're hosed.
next prev parent reply other threads:[~2009-07-23 13:06 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-20 17:08 [RFC][PATCH 0/5] hw-breakpoints: Make the API generic + support for perfcounters Frederic Weisbecker
2009-07-20 17:08 ` [RFC][PATCH 1/5] hw-breakpoints: Make kernel breakpoints API truly generic Frederic Weisbecker
2009-07-20 17:27 ` Mathieu Desnoyers
2009-07-25 2:37 ` Frederic Weisbecker
2009-07-25 15:38 ` Mathieu Desnoyers
2009-07-28 1:35 ` Frederic Weisbecker
2009-07-21 11:15 ` K.Prasad
2009-07-25 2:56 ` Frederic Weisbecker
2009-07-20 17:08 ` [RFC][PATCH 2/5] hw-breakpoints: Pull up the target symbol in a generic field Frederic Weisbecker
2009-07-20 17:08 ` [RFC][PATCH 3/5] hw-breakpoints: Make user breakpoints API truly generic Frederic Weisbecker
2009-07-20 17:08 ` [RFC][PATCH 4/5] perfcounter: Grow the event number to 64 bits Frederic Weisbecker
2009-07-20 17:08 ` [RFC][PATCH 5/5] perfcounter: Add support for kernel hardware breakpoints Frederic Weisbecker
2009-07-20 17:38 ` Peter Zijlstra
2009-07-21 7:11 ` Frédéric Weisbecker
2009-07-20 17:38 ` Peter Zijlstra
2009-07-21 7:19 ` Frédéric Weisbecker
2009-07-20 17:38 ` Peter Zijlstra
2009-07-20 21:22 ` Frédéric Weisbecker
2009-07-24 20:20 ` Masami Hiramatsu
2009-07-23 13:08 ` Peter Zijlstra [this message]
2009-07-23 17:45 ` Peter Zijlstra
2009-07-23 19:56 ` Alan Stern
2009-07-24 14:02 ` Frédéric Weisbecker
2009-07-24 14:26 ` Peter Zijlstra
2009-07-24 17:47 ` Frederic Weisbecker
2009-07-25 10:56 ` Peter Zijlstra
2009-07-25 14:19 ` Frederic Weisbecker
2009-07-25 15:51 ` Mathieu Desnoyers
2009-07-25 16:27 ` Peter Zijlstra
2009-07-25 16:22 ` Peter Zijlstra
2009-07-25 23:57 ` K.Prasad
2009-07-27 8:53 ` Peter Zijlstra
2009-07-28 1:03 ` Frederic Weisbecker
2009-07-28 7:24 ` Peter Zijlstra
2009-07-28 14:04 ` Mathieu Desnoyers
2009-07-28 14:42 ` Peter Zijlstra
2009-07-29 0:36 ` Frederic Weisbecker
2009-07-29 8:28 ` Peter Zijlstra
2009-07-29 14:03 ` Frederic Weisbecker
2009-07-28 16:12 ` K.Prasad
2009-07-28 16:41 ` Peter Zijlstra
2009-07-29 6:37 ` K.Prasad
2009-07-29 9:22 ` Peter Zijlstra
2009-07-29 14:57 ` Arnaldo Carvalho de Melo
2009-07-28 0:18 ` Frederic Weisbecker
2009-07-28 7:26 ` Peter Zijlstra
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