[PATCH 1/5] cpu: move cpu notifiers into cpu.h
From: Amerigo Wang <hidden>
Date: 2011-06-22 06:37:21
Also in:
lkml
Subsystem:
cpu hotplug, networking [general], rds - reliable datagram sockets, the rest · Maintainers:
Thomas Gleixner, Peter Zijlstra, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Allison Henderson, Linus Torvalds
It is not necessary to share the same notifier.h. Signed-off-by: WANG Cong <redacted> --- include/linux/cpu.h | 33 +++++++++++++++++++++++++++++++++ include/linux/notifier.h | 34 ++-------------------------------- net/rds/page.c | 1 + 3 files changed, 36 insertions(+), 32 deletions(-)
diff --git a/include/linux/cpu.h b/include/linux/cpu.h
index 5f09323..b1a635a 100644
--- a/include/linux/cpu.h
+++ b/include/linux/cpu.h@@ -70,6 +70,39 @@ enum { CPU_PRI_WORKQUEUE = 5, }; +#define CPU_ONLINE 0x0002 /* CPU (unsigned)v is up */ +#define CPU_UP_PREPARE 0x0003 /* CPU (unsigned)v coming up */ +#define CPU_UP_CANCELED 0x0004 /* CPU (unsigned)v NOT coming up */ +#define CPU_DOWN_PREPARE 0x0005 /* CPU (unsigned)v going down */ +#define CPU_DOWN_FAILED 0x0006 /* CPU (unsigned)v NOT going down */ +#define CPU_DEAD 0x0007 /* CPU (unsigned)v dead */ +#define CPU_DYING 0x0008 /* CPU (unsigned)v not running any task, + * not handling interrupts, soon dead. + * Called on the dying cpu, interrupts + * are already disabled. Must not + * sleep, must not fail */ +#define CPU_POST_DEAD 0x0009 /* CPU (unsigned)v dead, cpu_hotplug + * lock is dropped */ +#define CPU_STARTING 0x000A /* CPU (unsigned)v soon running. + * Called on the new cpu, just before + * enabling interrupts. Must not sleep, + * must not fail */ + +/* Used for CPU hotplug events occurring while tasks are frozen due to a suspend + * operation in progress + */ +#define CPU_TASKS_FROZEN 0x0010 + +#define CPU_ONLINE_FROZEN (CPU_ONLINE | CPU_TASKS_FROZEN) +#define CPU_UP_PREPARE_FROZEN (CPU_UP_PREPARE | CPU_TASKS_FROZEN) +#define CPU_UP_CANCELED_FROZEN (CPU_UP_CANCELED | CPU_TASKS_FROZEN) +#define CPU_DOWN_PREPARE_FROZEN (CPU_DOWN_PREPARE | CPU_TASKS_FROZEN) +#define CPU_DOWN_FAILED_FROZEN (CPU_DOWN_FAILED | CPU_TASKS_FROZEN) +#define CPU_DEAD_FROZEN (CPU_DEAD | CPU_TASKS_FROZEN) +#define CPU_DYING_FROZEN (CPU_DYING | CPU_TASKS_FROZEN) +#define CPU_STARTING_FROZEN (CPU_STARTING | CPU_TASKS_FROZEN) + + #ifdef CONFIG_SMP /* Need to know about CPUs going up/down? */ #if defined(CONFIG_HOTPLUG_CPU) || !defined(MODULE)
diff --git a/include/linux/notifier.h b/include/linux/notifier.h
index c0688b0..9eb25fc 100644
--- a/include/linux/notifier.h
+++ b/include/linux/notifier.h@@ -185,6 +185,8 @@ static inline int notifier_to_errno(int ret) * VC switch chains (for loadable kernel svgalib VC switch helpers) etc... */ +/* CPU notfiers are defined in include/linux/cpu.h. */ + /* netdevice notifier chain. Please remember to update the rtnetlink * notification exclusion list in rtnetlink_event() when adding new * types.
@@ -220,38 +222,6 @@ static inline int notifier_to_errno(int ret) #define NETLINK_URELEASE 0x0001 /* Unicast netlink socket released */ -#define CPU_ONLINE 0x0002 /* CPU (unsigned)v is up */ -#define CPU_UP_PREPARE 0x0003 /* CPU (unsigned)v coming up */ -#define CPU_UP_CANCELED 0x0004 /* CPU (unsigned)v NOT coming up */ -#define CPU_DOWN_PREPARE 0x0005 /* CPU (unsigned)v going down */ -#define CPU_DOWN_FAILED 0x0006 /* CPU (unsigned)v NOT going down */ -#define CPU_DEAD 0x0007 /* CPU (unsigned)v dead */ -#define CPU_DYING 0x0008 /* CPU (unsigned)v not running any task, - * not handling interrupts, soon dead. - * Called on the dying cpu, interrupts - * are already disabled. Must not - * sleep, must not fail */ -#define CPU_POST_DEAD 0x0009 /* CPU (unsigned)v dead, cpu_hotplug - * lock is dropped */ -#define CPU_STARTING 0x000A /* CPU (unsigned)v soon running. - * Called on the new cpu, just before - * enabling interrupts. Must not sleep, - * must not fail */ - -/* Used for CPU hotplug events occurring while tasks are frozen due to a suspend - * operation in progress - */ -#define CPU_TASKS_FROZEN 0x0010 - -#define CPU_ONLINE_FROZEN (CPU_ONLINE | CPU_TASKS_FROZEN) -#define CPU_UP_PREPARE_FROZEN (CPU_UP_PREPARE | CPU_TASKS_FROZEN) -#define CPU_UP_CANCELED_FROZEN (CPU_UP_CANCELED | CPU_TASKS_FROZEN) -#define CPU_DOWN_PREPARE_FROZEN (CPU_DOWN_PREPARE | CPU_TASKS_FROZEN) -#define CPU_DOWN_FAILED_FROZEN (CPU_DOWN_FAILED | CPU_TASKS_FROZEN) -#define CPU_DEAD_FROZEN (CPU_DEAD | CPU_TASKS_FROZEN) -#define CPU_DYING_FROZEN (CPU_DYING | CPU_TASKS_FROZEN) -#define CPU_STARTING_FROZEN (CPU_STARTING | CPU_TASKS_FROZEN) - /* Hibernation and suspend events */ #define PM_HIBERNATION_PREPARE 0x0001 /* Going to hibernate */ #define PM_POST_HIBERNATION 0x0002 /* Hibernation finished */
diff --git a/net/rds/page.c b/net/rds/page.c
index d8acdeb..b82d63e 100644
--- a/net/rds/page.c
+++ b/net/rds/page.c@@ -32,6 +32,7 @@ */ #include <linux/highmem.h> #include <linux/gfp.h> +#include <linux/cpu.h> #include "rds.h"
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1.7.4.4