From: Yinghai Lu <yinghai@kernel.org> To: Thomas Gleixner <tglx@linutronix.de> Cc: LKML <linux-kernel@vger.kernel.org>, linux-arch@vger.kernel.org, Peter Zijlstra <peterz@infradead.org>, Rusty Russell <rusty@rustcorp.com.au>, "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>, Ingo Molnar <mingo@kernel.org>, "Srivatsa S. Bhat" <srivatsa.bhat@linux.vnet.ibm.com>, Matt Turner <mattst88@gmail.com>, Russell King <linux@arm.linux.org.uk>, Mike Frysinger <vapier@gentoo.org>, Jesper Nilsson <jesper.nilsson@axis.com>, Richard Kuo <rkuo@codeaurora.org>, Tony Luck <tony.luck@intel.com>, Hirokazu Takata <takata@linux-m32r.org>, Ralf Baechle <ralf@linux-mips.org>, David Howells <dhowells@redhat.com>, "James E.J. Bottomley" <jejb@parisc-linux.org>, Benjamin Herrenschmidt <benh@kernel.crashing.org>, Martin Schwidefsky <schwidefsky@de.ibm.com>, Paul Mundt <lethal@linux-sh.org>, "David S. Miller" <davem@davemloft.net>, Chris Metcalf <cmetcalf@tilera.com>Richard Subject: Re: [patch 03/18] smp: Add generic smpboot facility Date: Fri, 20 Apr 2012 13:07:16 -0700 [thread overview] Message-ID: <CAE9FiQWpcD_GAtmnowTpAEW+6hRqxjokHKf4Nb2K92sm=SUGNQ@mail.gmail.com> (raw) In-Reply-To: <20120420124557.035417523@linutronix.de> On Fri, Apr 20, 2012 at 6:05 AM, Thomas Gleixner <tglx@linutronix.de> wrote: > Start a new file, which will hold SMP and CPU hotplug related generic > infrastructure. > =================================================================== > --- linux-2.6.orig/kernel/cpu.c > +++ linux-2.6/kernel/cpu.c > @@ -17,6 +17,8 @@ > #include <linux/gfp.h> > #include <linux/suspend.h> > > +#include "smpboot.h" > + > #ifdef CONFIG_SMP > /* Serializes the updates to cpu_online_mask, cpu_present_mask */ > static DEFINE_MUTEX(cpu_add_remove_lock); > @@ -300,6 +302,11 @@ static int __cpuinit _cpu_up(unsigned in > return -EINVAL; > > cpu_hotplug_begin(); > + > + ret = smpboot_prepare(cpu); > + if (ret) > + goto out; > + > ret = __cpu_notify(CPU_UP_PREPARE | mod, hcpu, -1, &nr_calls); > if (ret) { > nr_calls--; > @@ -320,6 +327,7 @@ static int __cpuinit _cpu_up(unsigned in > out_notify: > if (ret != 0) > __cpu_notify(CPU_UP_CANCELED | mod, hcpu, nr_calls, NULL); > +out: > cpu_hotplug_done(); > > return ret; > Index: linux-2.6/kernel/smpboot.c > =================================================================== > --- /dev/null > +++ linux-2.6/kernel/smpboot.c > @@ -0,0 +1,12 @@ > +/* > + * Common SMP CPU bringup/teardown functions > + */ > + > +#include "smpboot.h" > + > +/** > + * smpboot_prepare - generic smpboot preparation > + */ > +int __cpuinit smpboot_prepare(unsigned int cpu) > +{ return 0; > +}
WARNING: multiple messages have this Message-ID (diff)
From: Yinghai Lu <yinghai@kernel.org> To: Thomas Gleixner <tglx@linutronix.de> Cc: LKML <linux-kernel@vger.kernel.org>, linux-arch@vger.kernel.org, Peter Zijlstra <peterz@infradead.org>, Rusty Russell <rusty@rustcorp.com.au>, "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>, Ingo Molnar <mingo@kernel.org>, "Srivatsa S. Bhat" <srivatsa.bhat@linux.vnet.ibm.com>, Matt Turner <mattst88@gmail.com>, Russell King <linux@arm.linux.org.uk>, Mike Frysinger <vapier@gentoo.org>, Jesper Nilsson <jesper.nilsson@axis.com>, Richard Kuo <rkuo@codeaurora.org>, Tony Luck <tony.luck@intel.com>, Hirokazu Takata <takata@linux-m32r.org>, Ralf Baechle <ralf@linux-mips.org>, David Howells <dhowells@redhat.com>, "James E.J. Bottomley" <jejb@parisc-linux.org>, Benjamin Herrenschmidt <benh@kernel.crashing.org>, Martin Schwidefsky <schwidefsky@de.ibm.com>, Paul Mundt <lethal@linux-sh.org>, "David S. Miller" <davem@davemloft.net>, Chris Metcalf <cmetcalf@tilera.com>, Richard Weinberger <richard@nod.at>, x86@kernel.org Subject: Re: [patch 03/18] smp: Add generic smpboot facility Date: Fri, 20 Apr 2012 13:07:16 -0700 [thread overview] Message-ID: <CAE9FiQWpcD_GAtmnowTpAEW+6hRqxjokHKf4Nb2K92sm=SUGNQ@mail.gmail.com> (raw) Message-ID: <20120420200716.LFHnd8zoGgeEG_ZsQMHkxbIyr0joPokBjmeZ6ZHBxjM@z> (raw) In-Reply-To: <20120420124557.035417523@linutronix.de> On Fri, Apr 20, 2012 at 6:05 AM, Thomas Gleixner <tglx@linutronix.de> wrote: > Start a new file, which will hold SMP and CPU hotplug related generic > infrastructure. > =================================================================== > --- linux-2.6.orig/kernel/cpu.c > +++ linux-2.6/kernel/cpu.c > @@ -17,6 +17,8 @@ > #include <linux/gfp.h> > #include <linux/suspend.h> > > +#include "smpboot.h" > + > #ifdef CONFIG_SMP > /* Serializes the updates to cpu_online_mask, cpu_present_mask */ > static DEFINE_MUTEX(cpu_add_remove_lock); > @@ -300,6 +302,11 @@ static int __cpuinit _cpu_up(unsigned in > return -EINVAL; > > cpu_hotplug_begin(); > + > + ret = smpboot_prepare(cpu); > + if (ret) > + goto out; > + > ret = __cpu_notify(CPU_UP_PREPARE | mod, hcpu, -1, &nr_calls); > if (ret) { > nr_calls--; > @@ -320,6 +327,7 @@ static int __cpuinit _cpu_up(unsigned in > out_notify: > if (ret != 0) > __cpu_notify(CPU_UP_CANCELED | mod, hcpu, nr_calls, NULL); > +out: > cpu_hotplug_done(); > > return ret; > Index: linux-2.6/kernel/smpboot.c > =================================================================== > --- /dev/null > +++ linux-2.6/kernel/smpboot.c > @@ -0,0 +1,12 @@ > +/* > + * Common SMP CPU bringup/teardown functions > + */ > + > +#include "smpboot.h" > + > +/** > + * smpboot_prepare - generic smpboot preparation > + */ > +int __cpuinit smpboot_prepare(unsigned int cpu) > +{ return 0; > +}
next prev parent reply other threads:[~2012-04-20 20:07 UTC|newest] Thread overview: 82+ messages / expand[flat|nested] mbox.gz Atom feed top 2012-04-20 13:05 [patch 00/18] SMP: Boot and CPU hotplug refactoring - Part 1 Thomas Gleixner 2012-04-20 13:05 ` [patch 01/18] m32r: Remove pointless function prototypes Thomas Gleixner 2012-04-20 13:05 ` [patch 02/18] smp: Add task_struct argument to __cpu_up() Thomas Gleixner 2012-04-20 13:05 ` Thomas Gleixner 2012-04-23 7:58 ` Jesper Nilsson 2012-04-23 7:58 ` Jesper Nilsson 2012-04-20 13:05 ` [patch 03/18] smp: Add generic smpboot facility Thomas Gleixner 2012-04-20 13:05 ` Thomas Gleixner 2012-04-20 20:07 ` Yinghai Lu [this message] 2012-04-20 20:07 ` Yinghai Lu 2012-04-21 2:07 ` Stephen Rothwell 2012-04-21 2:07 ` Stephen Rothwell 2012-04-20 13:05 ` [patch 04/18] smp: Provide generic idle thread allocation Thomas Gleixner 2012-04-20 13:05 ` Thomas Gleixner 2012-04-20 16:21 ` Sam Ravnborg 2012-04-20 16:21 ` Sam Ravnborg 2012-04-20 18:55 ` Thomas Gleixner 2012-04-20 18:55 ` Thomas Gleixner 2012-04-21 2:20 ` Stephen Rothwell 2012-04-21 2:20 ` Stephen Rothwell 2012-04-21 2:25 ` Frank Rowand 2012-04-21 2:25 ` Frank Rowand 2012-04-20 13:05 ` [patch 05/18] x86: Add task_struct argument to smp_ops.cpu_up Thomas Gleixner 2012-04-20 13:05 ` [patch 06/18] x86: Use generic idle thread allocation Thomas Gleixner 2012-04-20 13:05 ` [patch 07/18] powerpc: " Thomas Gleixner 2012-04-20 13:05 ` Thomas Gleixner 2012-04-20 13:05 ` [patch 08/18] ia64: " Thomas Gleixner 2012-04-20 13:05 ` [patch 09/18] arm: " Thomas Gleixner 2012-04-20 13:05 ` Thomas Gleixner 2012-04-20 13:05 ` [patch 11/18] hexagon: " Thomas Gleixner 2012-04-20 13:05 ` Thomas Gleixner 2012-04-24 16:47 ` Richard Kuo 2012-04-24 16:47 ` Richard Kuo 2012-04-20 13:05 ` [patch 10/18] mips: " Thomas Gleixner 2012-04-20 13:05 ` Thomas Gleixner 2012-04-20 13:05 ` [patch 12/18] s390: " Thomas Gleixner 2012-04-20 13:05 ` Thomas Gleixner 2012-04-23 7:09 ` Martin Schwidefsky 2012-04-23 7:09 ` Martin Schwidefsky 2012-04-20 13:05 ` [patch 13/18] blackfin: " Thomas Gleixner 2012-04-20 13:05 ` [patch 14/18] cris: " Thomas Gleixner 2012-04-23 7:57 ` Jesper Nilsson 2012-04-23 7:57 ` Jesper Nilsson 2012-04-20 13:05 ` [patch 15/18] sh: " Thomas Gleixner 2012-04-20 13:05 ` Thomas Gleixner 2012-04-21 3:18 ` Paul Mundt 2012-04-20 13:05 ` [patch 16/18] alpha: " Thomas Gleixner 2012-04-20 13:05 ` Thomas Gleixner 2012-04-20 13:05 ` [patch 17/18] parisc: " Thomas Gleixner 2012-04-20 13:05 ` Thomas Gleixner 2012-04-20 13:05 ` [patch 18/18] sparc: " Thomas Gleixner 2012-04-20 13:05 ` Thomas Gleixner 2012-04-22 19:52 ` David Miller 2012-04-20 13:16 ` [patch 00/18] SMP: Boot and CPU hotplug refactoring - Part 1 Thomas Gleixner 2012-04-20 13:21 ` Peter Zijlstra 2012-04-20 13:47 ` Thomas Gleixner 2012-04-21 0:08 ` Suresh Siddha 2012-05-03 9:41 ` Thomas Gleixner 2012-05-03 9:41 ` Thomas Gleixner 2012-05-03 23:42 ` Suresh Siddha 2012-04-20 15:42 ` Tejun Heo 2012-04-20 15:49 ` Peter Zijlstra 2012-04-20 15:56 ` Thomas Gleixner 2012-04-20 13:56 ` Srivatsa S. Bhat 2012-04-20 14:18 ` Thomas Gleixner 2012-04-24 18:44 ` Konrad Rzeszutek Wilk 2012-05-21 1:42 ` Rusty Russell 2012-05-21 8:25 ` Thomas Gleixner 2012-05-21 8:25 ` Thomas Gleixner 2012-05-22 0:53 ` Rusty Russell 2012-04-20 14:06 ` richard -rw- weinberger 2012-04-20 14:06 ` richard -rw- weinberger 2012-04-20 14:19 ` Thomas Gleixner 2012-04-20 14:27 ` James Bottomley 2012-04-20 17:55 ` Paul E. McKenney 2012-04-20 23:11 ` Venki Pallipadi 2012-04-21 1:04 ` Frank Rowand 2012-04-21 1:55 ` Frank Rowand 2012-04-22 21:01 ` Chris Metcalf 2012-04-22 21:01 ` Chris Metcalf 2012-04-30 8:05 ` Santosh Shilimkar 2012-04-30 8:05 ` Santosh Shilimkar
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