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[PATCH] ppc64: Move iSeries_idle() into iSeries_setup.c

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Move iSeries_idle() into iSeries_setup.c, no one else needs to know about it.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Michael Ellerman 2005-07-07 17:56:29 -07:00 committed by Linus Torvalds
parent fd899c0cc7
commit d200903e11
2 changed files with 81 additions and 86 deletions
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81
arch/ppc64/kernel/iSeries_setup.c
View file

@ -834,6 +834,87 @@ static int __init iSeries_src_init(void)
late_initcall(iSeries_src_init);
static unsigned long maxYieldTime = 0;
static unsigned long minYieldTime = 0xffffffffffffffffUL;
static inline void process_iSeries_events(void)
{
asm volatile ("li 0,0x5555; sc" : : : "r0", "r3");
}
static void yield_shared_processor(void)
{
unsigned long tb;
unsigned long yieldTime;
HvCall_setEnabledInterrupts(HvCall_MaskIPI |
HvCall_MaskLpEvent |
HvCall_MaskLpProd |
HvCall_MaskTimeout);
tb = get_tb();
/* Compute future tb value when yield should expire */
HvCall_yieldProcessor(HvCall_YieldTimed, tb+tb_ticks_per_jiffy);
yieldTime = get_tb() - tb;
if (yieldTime > maxYieldTime)
maxYieldTime = yieldTime;
if (yieldTime < minYieldTime)
minYieldTime = yieldTime;
/*
* The decrementer stops during the yield. Force a fake decrementer
* here and let the timer_interrupt code sort out the actual time.
*/
get_paca()->lppaca.int_dword.fields.decr_int = 1;
process_iSeries_events();
}
static int iSeries_idle(void)
{
struct paca_struct *lpaca;
long oldval;
/* ensure iSeries run light will be out when idle */
ppc64_runlatch_off();
lpaca = get_paca();
while (1) {
if (lpaca->lppaca.shared_proc) {
if (hvlpevent_is_pending())
process_iSeries_events();
if (!need_resched())
yield_shared_processor();
} else {
oldval = test_and_clear_thread_flag(TIF_NEED_RESCHED);
if (!oldval) {
set_thread_flag(TIF_POLLING_NRFLAG);
while (!need_resched()) {
HMT_medium();
if (hvlpevent_is_pending())
process_iSeries_events();
HMT_low();
}
HMT_medium();
clear_thread_flag(TIF_POLLING_NRFLAG);
} else {
set_need_resched();
}
}
ppc64_runlatch_on();
schedule();
ppc64_runlatch_off();
}
return 0;
}
#ifndef CONFIG_PCI
void __init iSeries_init_IRQ(void) { }
#endif

86
arch/ppc64/kernel/idle.c
View file

@ -39,90 +39,6 @@ extern void power4_idle(void);
static int (*idle_loop)(void);
#ifdef CONFIG_PPC_ISERIES
static unsigned long maxYieldTime = 0;
static unsigned long minYieldTime = 0xffffffffffffffffUL;
static inline void process_iSeries_events(void)
{
asm volatile ("li 0,0x5555; sc" : : : "r0", "r3");
}
static void yield_shared_processor(void)
{
unsigned long tb;
unsigned long yieldTime;
HvCall_setEnabledInterrupts(HvCall_MaskIPI |
HvCall_MaskLpEvent |
HvCall_MaskLpProd |
HvCall_MaskTimeout);
tb = get_tb();
/* Compute future tb value when yield should expire */
HvCall_yieldProcessor(HvCall_YieldTimed, tb+tb_ticks_per_jiffy);
yieldTime = get_tb() - tb;
if (yieldTime > maxYieldTime)
maxYieldTime = yieldTime;
if (yieldTime < minYieldTime)
minYieldTime = yieldTime;
/*
* The decrementer stops during the yield. Force a fake decrementer
* here and let the timer_interrupt code sort out the actual time.
*/
get_paca()->lppaca.int_dword.fields.decr_int = 1;
process_iSeries_events();
}
static int iSeries_idle(void)
{
struct paca_struct *lpaca;
long oldval;
/* ensure iSeries run light will be out when idle */
ppc64_runlatch_off();
lpaca = get_paca();
while (1) {
if (lpaca->lppaca.shared_proc) {
if (hvlpevent_is_pending())
process_iSeries_events();
if (!need_resched())
yield_shared_processor();
} else {
oldval = test_and_clear_thread_flag(TIF_NEED_RESCHED);
if (!oldval) {
set_thread_flag(TIF_POLLING_NRFLAG);
while (!need_resched()) {
HMT_medium();
if (hvlpevent_is_pending())
process_iSeries_events();
HMT_low();
}
HMT_medium();
clear_thread_flag(TIF_POLLING_NRFLAG);
} else {
set_need_resched();
}
}
ppc64_runlatch_on();
schedule();
ppc64_runlatch_off();
}
return 0;
}
#else
int default_idle(void)
{
long oldval;
@ -305,8 +221,6 @@ int native_idle(void)
return 0;
}
#endif /* CONFIG_PPC_ISERIES */
void cpu_idle(void)
{
BUG_ON(NULL == ppc_md.idle_loop);