diff options
| author | Graf Yang <graf.yang@analog.com> | 2009-05-27 13:58:35 +0400 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2009-06-12 14:11:56 +0400 |
| commit | 9b9bfded623cffb4259b95e5419404015dba361f (patch) | |
| tree | 98ea3c3390e364576bcd572afaa2a899627247b7 /arch | |
| parent | ffc4d8bc4435918d2fd1e840b0bf985e7b56f0d3 (diff) | |
| download | linux-9b9bfded623cffb4259b95e5419404015dba361f.tar.xz | |
Blackfin: convert SMP to only use generic time framework
Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/blackfin/Kconfig | 1 | ||||
| -rw-r--r-- | arch/blackfin/kernel/time.c | 53 |
2 files changed, 20 insertions, 34 deletions
diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig index f1a7969b46ca..c56fd3eb7c10 100644 --- a/arch/blackfin/Kconfig +++ b/arch/blackfin/Kconfig @@ -223,6 +223,7 @@ endchoice config SMP depends on BF561 + select GENERIC_TIME bool "Symmetric multi-processing support" ---help--- This enables support for systems with more than one CPU, diff --git a/arch/blackfin/kernel/time.c b/arch/blackfin/kernel/time.c index daa02d45f03d..adb54aa7d7c8 100644 --- a/arch/blackfin/kernel/time.c +++ b/arch/blackfin/kernel/time.c @@ -24,14 +24,10 @@ static struct irqaction bfin_timer_irq = { .name = "Blackfin Timer Tick", -#ifdef CONFIG_IRQ_PER_CPU - .flags = IRQF_DISABLED | IRQF_PERCPU, -#else .flags = IRQF_DISABLED -#endif }; -#if defined(CONFIG_TICKSOURCE_GPTMR0) || defined(CONFIG_IPIPE) +#if defined(CONFIG_IPIPE) void __init setup_system_timer0(void) { /* Power down the core timer, just to play safe. */ @@ -74,7 +70,7 @@ void __init setup_core_timer(void) static void __init time_sched_init(irqreturn_t(*timer_routine) (int, void *)) { -#if defined(CONFIG_TICKSOURCE_GPTMR0) || defined(CONFIG_IPIPE) +#if defined(CONFIG_IPIPE) setup_system_timer0(); bfin_timer_irq.handler = timer_routine; setup_irq(IRQ_TIMER0, &bfin_timer_irq); @@ -94,7 +90,7 @@ static unsigned long gettimeoffset(void) unsigned long offset; unsigned long clocks_per_jiffy; -#if defined(CONFIG_TICKSOURCE_GPTMR0) || defined(CONFIG_IPIPE) +#if defined(CONFIG_IPIPE) clocks_per_jiffy = bfin_read_TIMER0_PERIOD(); offset = bfin_read_TIMER0_COUNTER() / \ (((clocks_per_jiffy + 1) * HZ) / USEC_PER_SEC); @@ -133,36 +129,25 @@ irqreturn_t timer_interrupt(int irq, void *dummy) static long last_rtc_update; write_seqlock(&xtime_lock); -#if defined(CONFIG_TICKSOURCE_GPTMR0) && !defined(CONFIG_IPIPE) + do_timer(1); + /* - * TIMIL0 is latched in __ipipe_grab_irq() when the I-Pipe is - * enabled. + * If we have an externally synchronized Linux clock, then update + * CMOS clock accordingly every ~11 minutes. Set_rtc_mmss() has to be + * called as close as possible to 500 ms before the new second starts. */ - if (get_gptimer_status(0) & TIMER_STATUS_TIMIL0) { -#endif - do_timer(1); - - /* - * If we have an externally synchronized Linux clock, then update - * CMOS clock accordingly every ~11 minutes. Set_rtc_mmss() has to be - * called as close as possible to 500 ms before the new second starts. - */ - if (ntp_synced() && - xtime.tv_sec > last_rtc_update + 660 && - (xtime.tv_nsec / NSEC_PER_USEC) >= - 500000 - ((unsigned)TICK_SIZE) / 2 - && (xtime.tv_nsec / NSEC_PER_USEC) <= - 500000 + ((unsigned)TICK_SIZE) / 2) { - if (set_rtc_mmss(xtime.tv_sec) == 0) - last_rtc_update = xtime.tv_sec; - else - /* Do it again in 60s. */ - last_rtc_update = xtime.tv_sec - 600; - } -#if defined(CONFIG_TICKSOURCE_GPTMR0) && !defined(CONFIG_IPIPE) - set_gptimer_status(0, TIMER_STATUS_TIMIL0); + if (ntp_synced() && + xtime.tv_sec > last_rtc_update + 660 && + (xtime.tv_nsec / NSEC_PER_USEC) >= + 500000 - ((unsigned)TICK_SIZE) / 2 + && (xtime.tv_nsec / NSEC_PER_USEC) <= + 500000 + ((unsigned)TICK_SIZE) / 2) { + if (set_rtc_mmss(xtime.tv_sec) == 0) + last_rtc_update = xtime.tv_sec; + else + /* Do it again in 60s. */ + last_rtc_update = xtime.tv_sec - 600; } -#endif write_sequnlock(&xtime_lock); #ifdef CONFIG_IPIPE |