Attachment 311423 Details for Bug 405361 – proposed patch

[patch] proposed patch

linux-kernel-test.patch (text/plain), 1.92 KB, created by Anton Arapov on 2008-07-09 21:16:58 UTC

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Creator: Anton Arapov

Created: 2008-07-09 21:16:58 UTC

Size: 1.92 KB

patch

obsolete

> arch/i386/kernel/i8253.c |    2 +-
> arch/i386/kernel/tsc.c   |    6 +++---
> kernel/time/jiffies.c    |    2 +-
> 3 files changed, 5 insertions(+), 5 deletions(-)
>
>diff --git a/arch/i386/kernel/i8253.c b/arch/i386/kernel/i8253.c
>index 631422e..d6f63c8 100644
>--- a/arch/i386/kernel/i8253.c
>+++ b/arch/i386/kernel/i8253.c
>@@ -113,7 +113,7 @@ static struct clocksource clocksource_pit = {
> 
> static int __init init_pit_clocksource(void)
> {
>-	if (num_possible_cpus() > 4) /* PIT does not scale! */
>+	if (num_possible_cpus() > 1) /* PIT does not scale! */
> 		return 0;
> 
> 	clocksource_pit.mult = clocksource_hz2mult(CLOCK_TICK_RATE, 20);
>diff --git a/arch/i386/kernel/tsc.c b/arch/i386/kernel/tsc.c
>index 16dbae7..b254697 100644
>--- a/arch/i386/kernel/tsc.c
>+++ b/arch/i386/kernel/tsc.c
>@@ -364,8 +364,8 @@ static int tsc_update_callback(void)
> 	int change = 0;
> 
> 	/* check to see if we should switch to the safe clocksource: */
>-	if (clocksource_tsc.rating != 50 && check_tsc_unstable()) {
>-		clocksource_tsc.rating = 50;
>+	if (clocksource_tsc.rating != 0 && check_tsc_unstable()) {
>+		clocksource_tsc.rating = 0;
> 		clocksource_reselect();
> 		change = 1;
> 	}
>@@ -476,7 +476,7 @@ static int __init init_tsc_clocksource(void)
> 							clocksource_tsc.shift);
> 		/* lower the rating if we already know its unstable: */
> 		if (check_tsc_unstable())
>-			clocksource_tsc.rating = 50;
>+			clocksource_tsc.rating = 0;
> 
> 		init_timer(&verify_tsc_freq_timer);
> 		verify_tsc_freq_timer.function = verify_tsc_freq;
>diff --git a/kernel/time/jiffies.c b/kernel/time/jiffies.c
>index 126bb30..a99b2a6 100644
>--- a/kernel/time/jiffies.c
>+++ b/kernel/time/jiffies.c
>@@ -57,7 +57,7 @@ static cycle_t jiffies_read(void)
> 
> struct clocksource clocksource_jiffies = {
> 	.name		= "jiffies",
>-	.rating		= 0, /* lowest rating*/
>+	.rating		= 1, /* lowest valid rating*/
> 	.read		= jiffies_read,
> 	.mask		= 0xffffffff, /*32bits*/
> 	.mult		= NSEC_PER_JIFFY << JIFFIES_SHIFT, /* details above */

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Attachments on bug 405361: 309838 | 309859 | 309891 | 309935 | 311328 | 311419 | 311420 | 311423 | 314399