Messages in this thread Patch in this message | | | Date | Tue, 15 Jan 2008 15:49:21 -0500 | From | Steven Rostedt <> | Subject | [RFC PATCH 14/30 v3] ppc clock accumulate fix |
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The following is a quick and dirty fix for powerpc so it includes cycle_accumulated in its calculation. It relies on the fact that the powerpc clocksource is a 64bit counter (don't have to worry about multiple overflows), so the subtraction should be safe.
Signed-off-by: John Stultz <johnstul@us.ibm.com> Signed-off-by: Steven Rostedt <srostedt@redhat.com> --- arch/powerpc/kernel/time.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
Index: linux-compile.git/arch/powerpc/kernel/time.c =================================================================== --- linux-compile.git.orig/arch/powerpc/kernel/time.c 2008-01-14 13:13:43.000000000 -0500 +++ linux-compile.git/arch/powerpc/kernel/time.c 2008-01-14 13:14:13.000000000 -0500 @@ -773,7 +773,8 @@ void update_vsyscall(struct timespec *wa stamp_xsec = (u64) xtime.tv_nsec * XSEC_PER_SEC; do_div(stamp_xsec, 1000000000); stamp_xsec += (u64) xtime.tv_sec * XSEC_PER_SEC; - update_gtod(clock->cycle_last, stamp_xsec, t2x); + update_gtod(clock->cycle_last-clock->cycle_accumulated, + stamp_xsec, t2x); } void update_vsyscall_tz(void) --
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