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authorRoman Zippel <zippel@linux-m68k.org>2008-09-22 14:42:44 -0700
committerThomas Gleixner <tglx@linutronix.de>2008-09-24 17:33:13 +0200
commitd40e944c25fb4642adb2a4c580a48218a9f3f824 (patch)
tree9be7107440704a84d17f9dde12991915931c5279 /kernel/posix-timers.c
parent5cd1c9c5cf30d4b33df3d3f74d8142f278d536b7 (diff)
ntp: improve adjtimex frequency rounding
Change PPM_SCALE_INV_SHIFT so that it doesn't throw away any input bits (19 is the amount of the factor 2 in PPM_SCALE), the output frequency can then be calculated back to its input value, as the inverse divide produce a slightly larger value, which is then correctly rounded by the final shift. Reported-by: Martin Ziegler <ziegler@uni-freiburg.de> Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Cc: John Stultz <johnstul@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/posix-timers.c')
0 files changed, 0 insertions, 0 deletions