Messages in this thread Patch in this message | | | Subject | [PATCH] linux-2.5.55_timer-none_A0 | From | john stultz <> | Date | 09 Jan 2003 16:49:04 -0800 |
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Linus, All,
Just a re-sync against 2.5.55. This patch creates an empty timer_opt structure (timer_none) which is then used as a default initializer to the timer pointer. This lets us avoid having to check before dereferencing the timer in future code.
Please apply.
thanks -john
diff -Nru a/arch/i386/kernel/time.c b/arch/i386/kernel/time.c --- a/arch/i386/kernel/time.c Thu Jan 9 15:21:21 2003 +++ b/arch/i386/kernel/time.c Thu Jan 9 15:21:21 2003 @@ -78,7 +78,8 @@ spinlock_t i8253_lock = SPIN_LOCK_UNLOCKED; EXPORT_SYMBOL(i8253_lock); -struct timer_opts* timer; +extern struct timer_opts timer_none; +struct timer_opts* timer = &timer_none; /* * This version of gettimeofday has microsecond resolution diff -Nru a/arch/i386/kernel/timers/Makefile b/arch/i386/kernel/timers/Makefile --- a/arch/i386/kernel/timers/Makefile Thu Jan 9 15:21:21 2003 +++ b/arch/i386/kernel/timers/Makefile Thu Jan 9 15:21:21 2003 @@ -2,6 +2,6 @@ # Makefile for x86 timers # -obj-y := timer.o timer_tsc.o timer_pit.o +obj-y := timer.o timer_none.o timer_tsc.o timer_pit.o obj-$(CONFIG_X86_CYCLONE) += timer_cyclone.o diff -Nru a/arch/i386/kernel/timers/timer_none.c b/arch/i386/kernel/timers/timer_none.c --- /dev/null Wed Dec 31 16:00:00 1969 +++ b/arch/i386/kernel/timers/timer_none.c Thu Jan 9 15:21:21 2003 @@ -0,0 +1,24 @@ +#include <asm/timer.h> + +static int init_none(void) +{ + return 0; +} + +static void mark_offset_none(void) +{ + /* nothing needed */ +} + +static unsigned long get_offset_none(void) +{ + return 0; +} + + +/* tsc timer_opts struct */ +struct timer_opts timer_none = { + .init = init_none, + .mark_offset = mark_offset_none, + .get_offset = get_offset_none, +};
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