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arch: Cleanup enable/disable_hlt

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enable/disable_hlt() does not need to be exported and can be killed on
architectures which do not use it at all.

Signed-off-by: Thomas Gleixner <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Rusty Russell <[email protected]>
Cc: Paul McKenney <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Reviewed-by: Cc: Srivatsa S. Bhat <[email protected]>
Cc: Magnus Damm <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>
This commit is contained in:
Thomas Gleixner 2013-03-21 22:49:31 +01:00
commit 6546327ad1
7 changed files with 3 additions and 60 deletions
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8
arch/cris/arch-v32/kernel/process.c
View file

@ -20,16 +20,14 @@
extern void stop_watchdog(void);
extern int cris_hlt_counter;
/* We use this if we don't have any better idle routine. */
void default_idle(void)
{
local_irq_disable();
if (!need_resched() && !cris_hlt_counter) {
/* Halt until exception. */
if (!need_resched()) {
/* Halt until exception. */
__asm__ volatile("ei \n\t"
"halt ");
"halt ");
}
local_irq_enable();
}

7
arch/cris/include/asm/processor.h
View file

@ -65,13 +65,6 @@ static inline void release_thread(struct task_struct *dead_task)
#define cpu_relax() barrier()
/*
* disable hlt during certain critical i/o operations
*/
#define HAVE_DISABLE_HLT
void disable_hlt(void);
void enable_hlt(void);
void default_idle(void);
#endif /* __ASM_CRIS_PROCESSOR_H */

25
arch/cris/kernel/process.c
View file

@ -29,31 +29,6 @@
//#define DEBUG
/*
* The hlt_counter, disable_hlt and enable_hlt is just here as a hook if
* there would ever be a halt sequence (for power save when idle) with
* some largish delay when halting or resuming *and* a driver that can't
* afford that delay. The hlt_counter would then be checked before
* executing the halt sequence, and the driver marks the unhaltable
* region by enable_hlt/disable_hlt.
*/
int cris_hlt_counter=0;
void disable_hlt(void)
{
cris_hlt_counter++;
}
EXPORT_SYMBOL(disable_hlt);
void enable_hlt(void)
{
cris_hlt_counter--;
}
EXPORT_SYMBOL(enable_hlt);
extern void default_idle(void);
void (*pm_power_off)(void);