From: Ingo Molnar <mingo@elte.hu>
To: Jason Wessel <jason.wessel@windriver.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>,
Paul Mackerras <paulus@samba.org>,
Frederic Weisbecker <fweisbec@gmail.com>,
lkml <linux-kernel@vger.kernel.org>,
Alan Stern <stern@rowland.harvard.edu>,
"K.Prasad" <prasad@linux.vnet.ibm.com>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [RFC] Fix 2.6.33 x86 regression to kgdb hw breakpoints - due to perf API changes
Date: Sat, 12 Dec 2009 14:52:16 +0100 [thread overview]
Message-ID: <20091212135216.GA18597@elte.hu> (raw)
In-Reply-To: <20091212132428.GB22389@elte.hu>
* Ingo Molnar <mingo@elte.hu> wrote:
> Hm, the kgdb hw-breakpoint changes freshly put into v2.6.33 look
> pretty broken: [...]
Sorry - i thought for a moment that it was introduced by this recent
change:
7f8b7ed: kgdb: Always process the whole breakpoint list on activate or deactivate
but it's deeper than that indeed.
Basically we have two options:
A- change kgdb to use the hw-breakpoints highlevel APIs (i'd prefer
that)
B- or keep what we had so far: kgdb overrides existing GDB (and now
perf) breakpoints
I havent noticed that hw-breakpoints lock up under kgdb.
Ingo
next prev parent reply other threads:[~2009-12-13 2:51 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-11 17:19 Jason Wessel
2009-12-12 13:24 ` Ingo Molnar
2009-12-12 13:52 ` Ingo Molnar [this message]
2009-12-12 21:01 ` Jason Wessel
2009-12-30 16:39 ` Frederic Weisbecker
2009-12-30 16:53 ` [RFC] Fix 2.6.33 x86 regression to kgdb hw breakpoints - dueto " Jason Wessel
2009-12-30 18:01 ` Frederic Weisbecker
2010-01-18 20:13 ` [RFC] Fix 2.6.33 x86 regression to kgdb hw breakpoints - duetoperf " Jason Wessel
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