From: Thomas Gleixner <tglx@linutronix.de> To: LKML <linux-kernel@vger.kernel.org> Cc: 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@kern Subject: [patch 03/18] smp: Add generic smpboot facility Date: Fri, 20 Apr 2012 13:05:44 -0000 [thread overview] Message-ID: <20120420124557.035417523@linutronix.de> (raw) In-Reply-To: 20120420122120.097464672@linutronix.de [-- Attachment #1: smp-add-generic-smpboot-facility.patch --] [-- Type: text/plain, Size: 2874 bytes --] Start a new file, which will hold SMP and CPU hotplug related generic infrastructure. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Matt Turner <mattst88@gmail.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Mike Frysinger <vapier@gentoo.org> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Richard Kuo <rkuo@codeaurora.org> Cc: Tony Luck <tony.luck@intel.com> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: David Howells <dhowells@redhat.com> Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Chris Metcalf <cmetcalf@tilera.com> Cc: Richard Weinberger <richard@nod.at> Cc: x86@kernel.org --- kernel/Makefile | 1 + kernel/cpu.c | 8 ++++++++ kernel/smpboot.c | 12 ++++++++++++ kernel/smpboot.h | 6 ++++++ 4 files changed, 27 insertions(+) Index: linux-2.6/kernel/Makefile =================================================================== --- linux-2.6.orig/kernel/Makefile +++ linux-2.6/kernel/Makefile @@ -43,6 +43,7 @@ obj-$(CONFIG_DEBUG_RT_MUTEXES) += rtmute obj-$(CONFIG_RT_MUTEX_TESTER) += rtmutex-tester.o obj-$(CONFIG_GENERIC_ISA_DMA) += dma.o obj-$(CONFIG_SMP) += smp.o +obj-$(CONFIG_SMP) += smpboot.o ifneq ($(CONFIG_SMP),y) obj-y += up.o endif Index: linux-2.6/kernel/cpu.c =================================================================== --- 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) +{ +} Index: linux-2.6/kernel/smpboot.h =================================================================== --- /dev/null +++ linux-2.6/kernel/smpboot.h @@ -0,0 +1,6 @@ +#ifndef SMPBOOT_H +#define SMPBOOT_H + +int smpboot_prepare(unsigned int cpu); + +#endif
WARNING: multiple messages have this Message-ID (diff)
From: Thomas Gleixner <tglx@linutronix.de> To: LKML <linux-kernel@vger.kernel.org> Cc: 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: [patch 03/18] smp: Add generic smpboot facility Date: Fri, 20 Apr 2012 13:05:44 -0000 [thread overview] Message-ID: <20120420124557.035417523@linutronix.de> (raw) Message-ID: <20120420130544.yhVhHCThS7X_1SW5f56Dn8wyldCrIpzLBgkwakW9Qzk@z> (raw) In-Reply-To: 20120420122120.097464672@linutronix.de [-- Attachment #1: smp-add-generic-smpboot-facility.patch --] [-- Type: text/plain, Size: 2876 bytes --] Start a new file, which will hold SMP and CPU hotplug related generic infrastructure. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Matt Turner <mattst88@gmail.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Mike Frysinger <vapier@gentoo.org> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Richard Kuo <rkuo@codeaurora.org> Cc: Tony Luck <tony.luck@intel.com> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: David Howells <dhowells@redhat.com> Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Chris Metcalf <cmetcalf@tilera.com> Cc: Richard Weinberger <richard@nod.at> Cc: x86@kernel.org --- kernel/Makefile | 1 + kernel/cpu.c | 8 ++++++++ kernel/smpboot.c | 12 ++++++++++++ kernel/smpboot.h | 6 ++++++ 4 files changed, 27 insertions(+) Index: linux-2.6/kernel/Makefile =================================================================== --- linux-2.6.orig/kernel/Makefile +++ linux-2.6/kernel/Makefile @@ -43,6 +43,7 @@ obj-$(CONFIG_DEBUG_RT_MUTEXES) += rtmute obj-$(CONFIG_RT_MUTEX_TESTER) += rtmutex-tester.o obj-$(CONFIG_GENERIC_ISA_DMA) += dma.o obj-$(CONFIG_SMP) += smp.o +obj-$(CONFIG_SMP) += smpboot.o ifneq ($(CONFIG_SMP),y) obj-y += up.o endif Index: linux-2.6/kernel/cpu.c =================================================================== --- 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) +{ +} Index: linux-2.6/kernel/smpboot.h =================================================================== --- /dev/null +++ linux-2.6/kernel/smpboot.h @@ -0,0 +1,6 @@ +#ifndef SMPBOOT_H +#define SMPBOOT_H + +int smpboot_prepare(unsigned int cpu); + +#endif
next prev parent reply other threads:[~2012-04-20 13:05 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 ` Thomas Gleixner [this message] 2012-04-20 13:05 ` [patch 03/18] smp: Add generic smpboot facility Thomas Gleixner 2012-04-20 20:07 ` Yinghai Lu 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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