From: Huang Ying <ying.huang@intel.com>
To: Vivek Goyal <vgoyal@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>,
"Eric W. Biederman" <ebiederm@xmission.com>,
Pavel Machek <pavel@ucw.cz>,
nigel@nigel.suspend2.net, "Rafael J. Wysocki" <rjw@sisk.pl>,
Andrew Morton <akpm@linux-foundation.org>,
mingo@elte.hu, Linus Torvalds <torvalds@linux-foundation.org>,
linux-kernel@vger.kernel.org,
Kexec Mailing List <kexec@lists.infradead.org>
Subject: Re: [PATCH -v2 7/8] kexec jump: ftrace_enabled_save/restore
Date: Tue, 12 Aug 2008 09:22:53 +0800 [thread overview]
Message-ID: <1218504173.24951.7.camel@caritas-dev.intel.com> (raw)
In-Reply-To: <20080811135136.GD28030@redhat.com>
Hi, Vivek,
On Mon, 2008-08-11 at 09:51 -0400, Vivek Goyal wrote:
[...]
> So you want to use a non-locked version from optimization point of view?
> So that we don't end up taking and release a lock?
Not from optimization point of view. machine_kexec() may be called from
crash_kexec(), where it is not permitted to take and release a lock.
Best Regards,
Huang Ying
prev parent reply other threads:[~2008-08-12 1:23 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-08 6:52 [PATCH -v2 7/8] kexec jump: ftrace_enabled_save/restore Huang Ying
2008-08-08 14:17 ` Vivek Goyal
2008-08-08 14:30 ` Steven Rostedt
2008-08-11 1:22 ` Huang Ying
2008-08-11 12:29 ` Steven Rostedt
2008-08-11 13:51 ` Vivek Goyal
2008-08-12 1:22 ` Huang Ying [this message]
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