diff options
| author | Jeff Dike <jdike@addtoit.com> | 2007-10-16 10:27:27 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-16 18:43:08 +0200 |
| commit | 5f734614fc6218db352d26571ab4d1604620199c (patch) | |
| tree | ff1323d87862c0522ef83568543f46b46eac941a /arch/um | |
| parent | uml: eliminate interrupts in the idle loop (diff) | |
| download | linux-5f734614fc6218db352d26571ab4d1604620199c.tar.xz linux-5f734614fc6218db352d26571ab4d1604620199c.zip | |
uml: time build fix
Put back an implementation of timeval_to_ns in arch/um/os-Linux/time.c.
tglx pointed out in his review of tickless support that there was a
perfectly good implementation of it in linux/time.h. The problem is that
this is userspace code which can't pull in kernel headers and there doesn't
seem to be a libc version.
So, I'm copying the version from linux/time.h rather than resurrecting my
version. This causes some declaration changes as it now returns a signed
value rather than an unsigned value.
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/um')
| -rw-r--r-- | arch/um/include/os.h | 4 | ||||
| -rw-r--r-- | arch/um/os-Linux/time.c | 22 |
2 files changed, 21 insertions, 5 deletions
diff --git a/arch/um/include/os.h b/arch/um/include/os.h index 91642e4137d7..a1b0804ee57b 100644 --- a/arch/um/include/os.h +++ b/arch/um/include/os.h @@ -254,9 +254,9 @@ extern void os_dump_core(void); extern void idle_sleep(unsigned long long nsecs); extern int set_interval(void); extern int timer_one_shot(int ticks); -extern unsigned long long disable_timer(void); +extern long long disable_timer(void); extern void uml_idle_timer(void); -extern unsigned long long os_nsecs(void); +extern long long os_nsecs(void); /* skas/mem.c */ extern long run_syscall_stub(struct mm_id * mm_idp, diff --git a/arch/um/os-Linux/time.c b/arch/um/os-Linux/time.c index d2cb161ae2b3..574b134f0502 100644 --- a/arch/um/os-Linux/time.c +++ b/arch/um/os-Linux/time.c @@ -39,7 +39,23 @@ int timer_one_shot(int ticks) return 0; } -unsigned long long disable_timer(void) +/** + * timeval_to_ns - Convert timeval to nanoseconds + * @ts: pointer to the timeval variable to be converted + * + * Returns the scalar nanosecond representation of the timeval + * parameter. + * + * Ripped from linux/time.h because it's a kernel header, and thus + * unusable from here. + */ +static inline long long timeval_to_ns(const struct timeval *tv) +{ + return ((long long) tv->tv_sec * UM_NSEC_PER_SEC) + + tv->tv_usec * UM_NSEC_PER_USEC; +} + +long long disable_timer(void) { struct itimerval time = ((struct itimerval) { { 0, 0 }, { 0, 0 } }); @@ -47,10 +63,10 @@ unsigned long long disable_timer(void) printk(UM_KERN_ERR "disable_timer - setitimer failed, " "errno = %d\n", errno); - return tv_to_nsec(&time.it_value); + return timeval_to_ns(&time.it_value); } -unsigned long long os_nsecs(void) +long long os_nsecs(void) { struct timeval tv; |