Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=05aa026a62d0fe0b4664a01d1537984b12567e7c
Commit: 05aa026a62d0fe0b4664a01d1537984b12567e7c
Parent: ebac52524df31e7c2fe13ca5bd3438907842f763
Author: Tony Breeds <[EMAIL PROTECTED]>
AuthorDate: Mon Oct 22 10:56:25 2007 +1000
Committer: Rusty Russell <[EMAIL PROTECTED]>
CommitDate: Tue Oct 23 15:49:49 2007 +1000
Clocksource is continuous regardless of the state of the host's TSC.
Currently lguest will spend a lot of of time waking up the host, as it
cannot go tickless (if the [host] TSC has been marked unstable). On my
laptop I was getting ~40% of wakeups from lguest.
With this patch applied, my laptop is much happier!
Signed-off-by: Tony Breeds <[EMAIL PROTECTED]>
Signed-off-by: Rusty Russell <[EMAIL PROTECTED]>
---
drivers/lguest/lguest.c | 5 ++---
1 files changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/lguest/lguest.c b/drivers/lguest/lguest.c
index c9ca610..8e9e485 100644
--- a/drivers/lguest/lguest.c
+++ b/drivers/lguest/lguest.c
@@ -679,6 +679,7 @@ static struct clocksource lguest_clock = {
.mask = CLOCKSOURCE_MASK(64),
.mult = 1 << 22,
.shift = 22,
+ .flags = CLOCK_SOURCE_IS_CONTINUOUS,
};
/* The "scheduler clock" is just our real clock, adjusted to start at zero */
@@ -760,11 +761,9 @@ static void lguest_time_init(void)
* the TSC, otherwise it's a dumb nanosecond-resolution clock. Either
* way, the "rating" is initialized so high that it's always chosen
* over any other clocksource. */
- if (lguest_data.tsc_khz) {
+ if (lguest_data.tsc_khz)
lguest_clock.mult = clocksource_khz2mult(lguest_data.tsc_khz,
lguest_clock.shift);
- lguest_clock.flags = CLOCK_SOURCE_IS_CONTINUOUS;
- }
clock_base = lguest_clock_read();
clocksource_register(&lguest_clock);
-
To unsubscribe from this list: send the line "unsubscribe git-commits-head" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
