Gitweb: http://git.kernel.org/linus/9b9bfded623cffb4259b95e5419404015dba361f
Commit: 9b9bfded623cffb4259b95e5419404015dba361f
Parent: ffc4d8bc4435918d2fd1e840b0bf985e7b56f0d3
Author: Graf Yang <graf.yang@analog.com>
AuthorDate: Wed May 27 09:58:35 2009 +0000
Committer: Mike Frysinger <vapier@gentoo.org>
CommitDate: Fri Jun 12 06:11:56 2009 -0400
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>
---
arch/blackfin/Kconfig | 1 +
arch/blackfin/kernel/time.c | 53 +++++++++++++++---------------------------
2 files changed, 20 insertions(+), 34 deletions(-)
diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig
index f1a7969..c56fd3e 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 daa02d4..adb54aa 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
--
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