Eric Lee / smarc-fsl-linux-kernel | Embedian Git Server

e3920fb42 [PATCH] Disable CPU hotplug during suspend ... Browse Code »

The current suspend code has to be run on one CPU, so we use the CPU
hotplug to take the non-boot CPUs offline on SMP machines. However, we
should also make sure that these CPUs will not be enabled by someone else
after we have disabled them.

The functions disable_nonboot_cpus() and enable_nonboot_cpus() are moved to
kernel/cpu.c, because they now refer to some stuff in there that should
better be static. Also it's better if disable_nonboot_cpus() returns an
error instead of panicking if something goes wrong, and
enable_nonboot_cpus() has no reason to panic(), because the CPUs may have
been enabled by the userland before it tries to take them online.

Signed-off-by: Rafael J. Wysocki
Acked-by: Pavel Machek
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds

Rafael J. Wysocki
2006-09-26 23:48:59 +0800

Makefile 248 Bytes

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ifeq ($(CONFIG_PM_DEBUG),y)
EXTRA_CFLAGS	+=	-DDEBUG
endif

obj-y				:= main.o process.o console.o
obj-$(CONFIG_PM_LEGACY)		+= pm.o
obj-$(CONFIG_SOFTWARE_SUSPEND)	+= swsusp.o disk.o snapshot.o swap.o user.o

obj-$(CONFIG_MAGIC_SYSRQ)	+= poweroff.o