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authorAtsushi Nemoto <anemo@mba.ocn.ne.jp>2006-09-30 23:28:31 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-01 00:39:27 -0700
commit8ef386092d7c2891bd7acefb2a87f878f7e9a0d6 (patch)
treeb149f0c63f9b9bb3f43e82097f1ae5972662288f /arch/x86_64/kernel/time.c
parent70bc42f90a3f4721c89dbe865e6c95da8565b41c (diff)
downloadop-kernel-dev-8ef386092d7c2891bd7acefb2a87f878f7e9a0d6.zip
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[PATCH] kill wall_jiffies
With 2.6.18-rc4-mm2, now wall_jiffies will always be the same as jiffies. So we can kill wall_jiffies completely. This is just a cleanup and logically should not change any real behavior except for one thing: RTC updating code in (old) ppc and xtensa use a condition "jiffies - wall_jiffies == 1". This condition is never met so I suppose it is just a bug. I just remove that condition only instead of kill the whole "if" block. [heiko.carstens@de.ibm.com: s390 build fix and cleanup] Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Cc: Andi Kleen <ak@muc.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ian Molton <spyro@f2s.com> Cc: Mikael Starvik <starvik@axis.com> Cc: David Howells <dhowells@redhat.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Hirokazu Takata <takata.hirokazu@renesas.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Kazumoto Kojima <kkojima@rr.iij4u.or.jp> Cc: Richard Curnow <rc@rc0.org.uk> Cc: William Lee Irwin III <wli@holomorphy.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Miles Bader <uclinux-v850@lsi.nec.co.jp> Cc: Chris Zankel <chris@zankel.net> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/x86_64/kernel/time.c')
-rw-r--r--arch/x86_64/kernel/time.c12
1 files changed, 3 insertions, 9 deletions
diff --git a/arch/x86_64/kernel/time.c b/arch/x86_64/kernel/time.c
index 7ea3bf2..557e92a 100644
--- a/arch/x86_64/kernel/time.c
+++ b/arch/x86_64/kernel/time.c
@@ -77,7 +77,6 @@ unsigned long long monotonic_base;
struct vxtime_data __vxtime __section_vxtime; /* for vsyscalls */
volatile unsigned long __jiffies __section_jiffies = INITIAL_JIFFIES;
-unsigned long __wall_jiffies __section_wall_jiffies = INITIAL_JIFFIES;
struct timespec __xtime __section_xtime;
struct timezone __sys_tz __section_sys_tz;
@@ -119,7 +118,7 @@ unsigned int (*do_gettimeoffset)(void) = do_gettimeoffset_tsc;
void do_gettimeofday(struct timeval *tv)
{
- unsigned long seq, t;
+ unsigned long seq;
unsigned int sec, usec;
do {
@@ -136,10 +135,7 @@ void do_gettimeofday(struct timeval *tv)
be found. Note when you fix it here you need to do the same
in arch/x86_64/kernel/vsyscall.c and export all needed
variables in vmlinux.lds. -AK */
-
- t = (jiffies - wall_jiffies) * USEC_PER_TICK +
- do_gettimeoffset();
- usec += t;
+ usec += do_gettimeoffset();
} while (read_seqretry(&xtime_lock, seq));
@@ -165,8 +161,7 @@ int do_settimeofday(struct timespec *tv)
write_seqlock_irq(&xtime_lock);
- nsec -= do_gettimeoffset() * NSEC_PER_USEC +
- (jiffies - wall_jiffies) * NSEC_PER_TICK;
+ nsec -= do_gettimeoffset() * NSEC_PER_USEC;
wtm_sec = wall_to_monotonic.tv_sec + (xtime.tv_sec - sec);
wtm_nsec = wall_to_monotonic.tv_nsec + (xtime.tv_nsec - nsec);
@@ -1071,7 +1066,6 @@ static int timer_resume(struct sys_device *dev)
vxtime.last_tsc = get_cycles_sync();
write_sequnlock_irqrestore(&xtime_lock,flags);
jiffies += sleep_length;
- wall_jiffies += sleep_length;
monotonic_base += sleep_length * (NSEC_PER_SEC/HZ);
touch_softlockup_watchdog();
return 0;
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