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authorJeff Dike <jdike@addtoit.com>2007-10-16 01:27:27 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-16 09:43:08 -0700
commit5f734614fc6218db352d26571ab4d1604620199c (patch)
treeff1323d87862c0522ef83568543f46b46eac941a /arch
parentb160fb6309dc907cbd8849e549d83badb86dd35b (diff)
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')
-rw-r--r--arch/um/include/os.h4
-rw-r--r--arch/um/os-Linux/time.c22
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;

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