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| author | Jeff Dike <jdike@addtoit.com> | 2006-06-04 02:51:46 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-05 12:29:17 -0700 |
| commit | 5cb38bc47bf370570fce81f89e05e5250169060f (patch) | |
| tree | 5df71668b2b42b575641c8f7e947769fca4e0602 /arch/um | |
| parent | 65e62974a8a6157140259b26e7156e39f53031b6 (diff) | |
| download | linux-stable-5cb38bc47bf370570fce81f89e05e5250169060f.tar.gz linux-stable-5cb38bc47bf370570fce81f89e05e5250169060f.tar.bz2 linux-stable-5cb38bc47bf370570fce81f89e05e5250169060f.zip | |
[PATCH] uml: fix wall_to_monotonic initialization
From: Jeff Dike <jdike@addtoit.com>
Initialize wall_to_monotonic correctly. This fixes a problem where sleeps
lasted about one secone less than they should. This also called for a bit of
code restructuring, following a patch which Blaisorblade had been keeping.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/um')
| -rw-r--r-- | arch/um/include/kern_util.h | 13 | ||||
| -rw-r--r-- | arch/um/kernel/time_kern.c | 10 | ||||
| -rw-r--r-- | arch/um/os-Linux/time.c | 10 |
3 files changed, 13 insertions, 20 deletions
diff --git a/arch/um/include/kern_util.h b/arch/um/include/kern_util.h index efa3d33c0be6..310980b32173 100644 --- a/arch/um/include/kern_util.h +++ b/arch/um/include/kern_util.h @@ -120,20 +120,11 @@ extern int is_syscall(unsigned long addr); extern void free_irq(unsigned int, void *); extern int cpu(void); +extern void time_init_kern(void); + /* Are we disallowed to sleep? Used to choose between GFP_KERNEL and GFP_ATOMIC. */ extern int __cant_sleep(void); extern void segv_handler(int sig, union uml_pt_regs *regs); extern void sigio_handler(int sig, union uml_pt_regs *regs); #endif - -/* - * Overrides for Emacs so that we follow Linus's tabbing style. - * Emacs will notice this stuff at the end of the file and automatically - * adjust the settings for this buffer only. This must remain at the end - * of the file. - * --------------------------------------------------------------------------- - * Local variables: - * c-file-style: "linux" - * End: - */ diff --git a/arch/um/kernel/time_kern.c b/arch/um/kernel/time_kern.c index 528cf623f8b4..86f51d04c98d 100644 --- a/arch/um/kernel/time_kern.c +++ b/arch/um/kernel/time_kern.c @@ -84,6 +84,16 @@ void timer_irq(union uml_pt_regs *regs) } } + +void time_init_kern(void) +{ + unsigned long long nsecs; + + nsecs = os_nsecs(); + set_normalized_timespec(&wall_to_monotonic, -nsecs / BILLION, + -nsecs % BILLION); +} + void do_boot_timer_handler(struct sigcontext * sc) { struct pt_regs regs; diff --git a/arch/um/os-Linux/time.c b/arch/um/os-Linux/time.c index 6f7626775acb..280c4fb9b585 100644 --- a/arch/um/os-Linux/time.c +++ b/arch/um/os-Linux/time.c @@ -81,20 +81,12 @@ void uml_idle_timer(void) set_interval(ITIMER_REAL); } -extern void ktime_get_ts(struct timespec *ts); -#define do_posix_clock_monotonic_gettime(ts) ktime_get_ts(ts) - void time_init(void) { - struct timespec now; - if(signal(SIGVTALRM, boot_timer_handler) == SIG_ERR) panic("Couldn't set SIGVTALRM handler"); set_interval(ITIMER_VIRTUAL); - - do_posix_clock_monotonic_gettime(&now); - wall_to_monotonic.tv_sec = -now.tv_sec; - wall_to_monotonic.tv_nsec = -now.tv_nsec; + time_init_kern(); } unsigned long long os_nsecs(void) |