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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-07-26 12:22:12 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-07-27 10:48:42 +0100 |
| commit | 9ca03a21e320a6bf44559323527aba704bcc8772 (patch) | |
| tree | c3422c49decfdca220c0088938546c49ee71ba64 /arch/arm/kernel/process.c | |
| parent | b8ab5397bcbd92e3fd4a9770e0bf59315fa38dab (diff) | |
| download | op-kernel-dev-9ca03a21e320a6bf44559323527aba704bcc8772.zip op-kernel-dev-9ca03a21e320a6bf44559323527aba704bcc8772.tar.gz | |
ARM: Factor out common code from cpu_proc_fin()
All implementations of cpu_proc_fin() start by disabling interrupts
and then flush caches. Rather than have every processors proc_fin()
implementation do this, move it out into generic code - and move the
cache flush past setup_mm_for_reboot() (so it can benefit from having
caches still enabled.)
This allows cpu_proc_fin() to become independent of the L1/L2 cache
types, and eventually move the L2 cache flushing into the L2 support
code.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/kernel/process.c')
| -rw-r--r-- | arch/arm/kernel/process.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c index a4a9cc8..aaf5115 100644 --- a/arch/arm/kernel/process.c +++ b/arch/arm/kernel/process.c @@ -29,6 +29,7 @@ #include <linux/utsname.h> #include <linux/uaccess.h> +#include <asm/cacheflush.h> #include <asm/leds.h> #include <asm/processor.h> #include <asm/system.h> @@ -84,10 +85,9 @@ __setup("hlt", hlt_setup); void arm_machine_restart(char mode, const char *cmd) { - /* - * Clean and disable cache, and turn off interrupts - */ - cpu_proc_fin(); + /* Disable interrupts first */ + local_irq_disable(); + local_fiq_disable(); /* * Tell the mm system that we are going to reboot - @@ -96,6 +96,15 @@ void arm_machine_restart(char mode, const char *cmd) */ setup_mm_for_reboot(mode); + /* Clean and invalidate caches */ + flush_cache_all(); + + /* Turn off caching */ + cpu_proc_fin(); + + /* Push out any further dirty data, and ensure cache is empty */ + flush_cache_all(); + /* * Now call the architecture specific reboot code. */ |
