posix-timers: Move posix-timer internals to core

None of these declarations is required outside of kernel/time. Move them to
an internal header.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Christoph Hellwig <hch@lst.de>
Link: http://lkml.kernel.org/r/20170530211656.394803853@linutronix.de

5 files changed, 36 insertions, 0 deletions

diff --git a/kernel/time/alarmtimer.c b/kernel/time/alarmtimer.c
index 2a8675f9aac5..36855d675da5 100644
--- a/kernel/time/alarmtimer.c
+++ b/kernel/time/alarmtimer.c
@@ -28,6 +28,8 @@
 #include <linux/workqueue.h>
 #include <linux/freezer.h>
 
+#include "posix-timers.h"
+
 #define CREATE_TRACE_POINTS
 #include <trace/events/alarmtimer.h>
 
diff --git a/kernel/time/posix-clock.c b/kernel/time/posix-clock.c
index bd4fb785652f..17cdc554c9fe 100644
--- a/kernel/time/posix-clock.c
+++ b/kernel/time/posix-clock.c
@@ -25,6 +25,8 @@
 #include <linux/syscalls.h>
 #include <linux/uaccess.h>
 
+#include "posix-timers.h"
+
 static void delete_clock(struct kref *kref);
 
 /*
diff --git a/kernel/time/posix-cpu-timers.c b/kernel/time/posix-cpu-timers.c
index c99434739fd5..a77a792f2570 100644
--- a/kernel/time/posix-cpu-timers.c
+++ b/kernel/time/posix-cpu-timers.c
@@ -13,6 +13,8 @@
 #include <linux/tick.h>
 #include <linux/workqueue.h>
 
+#include "posix-timers.h"
+
 /*
  * Called after updating RLIMIT_CPU to run cpu timer and update
  * tsk->signal->cputime_expires expiration cache if necessary. Needs
diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c
index b60b655dfbcd..dee6a0d911d4 100644
--- a/kernel/time/posix-timers.c
+++ b/kernel/time/posix-timers.c
@@ -51,6 +51,7 @@
 #include <linux/hashtable.h>
 
 #include "timekeeping.h"
+#include "posix-timers.h"
 
 /*
  * Management arrays for POSIX timers. Timers are now kept in static hash table
diff --git a/kernel/time/posix-timers.h b/kernel/time/posix-timers.h
new file mode 100644
index 000000000000..ad2dbd29b389
--- /dev/null
+++ b/kernel/time/posix-timers.h
@@ -0,0 +1,29 @@
+#define TIMER_RETRY 1
+
+struct k_clock {
+        int (*clock_getres) (const clockid_t which_clock, struct timespec64 *tp);
+        int (*clock_set) (const clockid_t which_clock,
+                          const struct timespec64 *tp);
+        int (*clock_get) (const clockid_t which_clock, struct timespec64 *tp);
+        int (*clock_adj) (const clockid_t which_clock, struct timex *tx);
+        int (*timer_create) (struct k_itimer *timer);
+        int (*nsleep) (const clockid_t which_clock, int flags,
+                       struct timespec64 *, struct timespec __user *);
+        long (*nsleep_restart) (struct restart_block *restart_block);
+        int (*timer_set) (struct k_itimer *timr, int flags,
+                          struct itimerspec64 *new_setting,
+                          struct itimerspec64 *old_setting);
+        int (*timer_del) (struct k_itimer *timr);
+        void (*timer_get) (struct k_itimer *timr,
+                           struct itimerspec64 *cur_setting);
+};
+
+extern const struct k_clock clock_posix_cpu;
+extern const struct k_clock clock_posix_dynamic;
+extern const struct k_clock clock_process;
+extern const struct k_clock clock_thread;
+extern const struct k_clock alarm_clock;
+
+int posix_timer_event(struct k_itimer *timr, int si_private);
+
+void posix_cpu_timer_schedule(struct k_itimer *timer);