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sh: Split out the idle loop for reuse between _32/_64 variants.

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Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt
2008-11-26 15:52:44 +09:00
parent eb67cf14ae
commit 1da1180c6e
5 changed files with 83 additions and 123 deletions
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61
arch/sh/kernel/process_32.c
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@@ -32,69 +32,8 @@
#include <asm/fpu.h>
#include <asm/syscalls.h>
static int hlt_counter;
int ubc_usercnt = 0;
void (*pm_idle)(void);
void (*pm_power_off)(void);
EXPORT_SYMBOL(pm_power_off);
static int __init nohlt_setup(char *__unused)
{
hlt_counter = 1;
return 1;
}
__setup("nohlt", nohlt_setup);
static int __init hlt_setup(char *__unused)
{
hlt_counter = 0;
return 1;
}
__setup("hlt", hlt_setup);
static void default_idle(void)
{
if (!hlt_counter) {
clear_thread_flag(TIF_POLLING_NRFLAG);
smp_mb__after_clear_bit();
set_bl_bit();
stop_critical_timings();
while (!need_resched())
cpu_sleep();
start_critical_timings();
clear_bl_bit();
set_thread_flag(TIF_POLLING_NRFLAG);
} else
while (!need_resched())
cpu_relax();
}
void cpu_idle(void)
{
set_thread_flag(TIF_POLLING_NRFLAG);
/* endless idle loop with no priority at all */
while (1) {
void (*idle)(void) = pm_idle;
if (!idle)
idle = default_idle;
tick_nohz_stop_sched_tick(1);
while (!need_resched())
idle();
tick_nohz_restart_sched_tick();
preempt_enable_no_resched();
schedule();
preempt_disable();
check_pgt_cache();
}
}
void machine_restart(char * __unused)
{
/* SR.BL=1 and invoke address error to let CPU reset (manual reset) */