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Subject[PATCH v3 10/22] posix-timers:Split out the guts of the syscall and change the implementation for clock_gettime
Date
This patch splits out the guts of the clock_gettime syscall and changes the
clock_gettime syscall implementation to prepare the converting to 64bit methods
for the clock_gettime syscall function in posix-timers.c file

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
---
kernel/time/posix-timers.c | 16 +++++++++++-----
1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c
index 0fe8a65..8aac06d 100644
--- a/kernel/time/posix-timers.c
+++ b/kernel/time/posix-timers.c
@@ -1115,17 +1115,23 @@ SYSCALL_DEFINE2(clock_settime, const clockid_t, which_clock,
#endif
}

-SYSCALL_DEFINE2(clock_gettime, const clockid_t, which_clock,
- struct timespec __user *,tp)
+static int __clock_gettime(clockid_t which_clock, struct timespec *ts)
{
struct k_clock *kc = clockid_to_kclock(which_clock);
- struct timespec kernel_tp;
- int error;

if (!kc)
return -EINVAL;

- error = kc->clock_get(which_clock, &kernel_tp);
+ return kc->clock_get(which_clock, ts);
+}
+
+SYSCALL_DEFINE2(clock_gettime, const clockid_t, which_clock,
+ struct timespec __user *,tp)
+{
+ struct timespec kernel_tp;
+ int error;
+
+ error = __clock_gettime(which_clock, &kernel_tp);

if (!error && copy_to_user(tp, &kernel_tp, sizeof (kernel_tp)))
error = -EFAULT;
--
1.7.9.5


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