From: Robin Holt <holt@sgi.com>
To: Ingo Molnar <mingo@redhat.com>, Russ Anderson <rja@sgi.com>
Cc: Shawn Guo <shawn.guo@linaro.org>, Oleg Nesterov <oleg@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>,
"H. Peter Anvin" <hpa@zytor.com>,
Lai Jiangshan <laijs@cn.fujitsu.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Michel Lespinasse <walken@google.com>,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
Paul Mackerras <paulus@samba.org>,
Peter Zijlstra <peterz@infradead.org>, Robin Holt <holt@sgi.com>,
"rusty@rustcorp.com.au" <rusty@rustcorp.com.au>,
Tejun Heo <tj@kernel.org>,
the arch/x86 maintainers <x86@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>
Subject: [Patch -v3 0/4] Shutdown from reboot_cpuid without stopping other cpus.
Date: Mon, 15 Apr 2013 12:12:25 -0500 [thread overview]
Message-ID: <20130415171225.GC3658@sgi.com> (raw)
We recently noticed that reboot of a 1024 cpu machine takes approx 16
minutes of just stopping the cpus. The slowdown was tracked to commit
f96972f.
The current implementation does all the work of hot removing the cpus
before halting the system. We are switching to just migrating to the
reboot_cpuid and then continuing with shutdown/reboot.
The patch set is broken into four parts. The first is planned for
the stable release. The others move the halt/shutdown/reboot related
files to their own kernel/reboot.c file and then introduce the kernel
boot parameter.
next reply other threads:[~2013-04-15 17:12 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-15 17:12 Robin Holt [this message]
2013-04-15 17:14 ` [Patch -v3 1/4] Migrate shutdown/reboot to boot cpu Robin Holt
2013-04-16 3:02 ` Shawn Guo
2013-04-15 17:15 ` [Patch -v3 2/4] Move shutdown/reboot related functions to kernel/reboot.c Robin Holt
2013-04-15 17:38 ` Joe Perches
2013-04-15 17:16 ` [Patch -v3 3/4] checkpatch.pl the new kernel/reboot.c file Robin Holt
2013-04-15 17:45 ` Joe Perches
2013-04-15 18:39 ` Robin Holt
2013-04-16 9:41 ` Robin Holt
2013-04-16 15:10 ` Joe Perches
2013-04-15 17:16 ` [Patch -v3 4/4] Make reboot_cpuid a kernel parameter Robin Holt
2013-04-15 17:18 ` H. Peter Anvin
2013-04-15 17:33 ` Robin Holt
2013-04-15 17:47 ` H. Peter Anvin
2013-04-15 18:22 ` Robin Holt
2013-04-16 9:01 ` Ingo Molnar
2013-04-16 9:24 ` Robin Holt
2013-04-16 9:29 ` Ingo Molnar
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