From 9acf6597c533f3d5c991f730c6a1be296679018e Mon Sep 17 00:00:00 2001 From: Christoph Lameter Date: Thu, 28 Apr 2005 08:13:58 -0700 Subject: [PATCH] [PATCH] time interpolator: Fix settimeofday inaccuracy settimeofday will set the time a little bit too early on systems using time interpolation since it subtracts the current interpolator offset from the time. This used to be necessary with the code in 2.6.9 and earlier but the new code resets the time interpolator after setting the time. Thus the time is set too early and gettimeofday will return a time slightly before the time specified with settimeofday if invoked immeditely after settimeofday. This removes the obsolete subtraction of the time interpolator offset and makes settimeofday set the time accurately. Signed-off-by: Christoph Lameter Signed-off-by: Linus Torvalds --- kernel/time.c | 8 -------- 1 file changed, 8 deletions(-) diff --git a/kernel/time.c b/kernel/time.c index 96fd0f49963..d4335c1c884 100644 --- a/kernel/time.c +++ b/kernel/time.c @@ -516,14 +516,6 @@ int do_settimeofday (struct timespec *tv) write_seqlock_irq(&xtime_lock); { - /* - * This is revolting. We need to set "xtime" correctly. However, the value - * in this location is the value at the most recent update of wall time. - * Discover what correction gettimeofday would have done, and then undo - * it! - */ - nsec -= time_interpolator_get_offset(); - wtm_sec = wall_to_monotonic.tv_sec + (xtime.tv_sec - sec); wtm_nsec = wall_to_monotonic.tv_nsec + (xtime.tv_nsec - nsec); -- 2.20.1