jbd: clean up journal_try_to_free_buffers()

[safe/jmp/linux-2.6] / include / linux / time.h

diff --git a/include/linux/time.h b/include/linux/time.h
index ce321ac..ea16c1a 100644 (file)
--- a/include/linux/time.h
+++ b/include/linux/time.h
@@ -12,14 +12,14 @@
 #ifndef _STRUCT_TIMESPEC
 #define _STRUCT_TIMESPEC
 struct timespec {
-       time_t  tv_sec;         /* seconds */
-       long    tv_nsec;        /* nanoseconds */
+       __kernel_time_t tv_sec;                 /* seconds */
+       long            tv_nsec;                /* nanoseconds */
 };
 #endif
 
 struct timeval {
-       time_t          tv_sec;         /* seconds */
-       suseconds_t     tv_usec;        /* microseconds */
+       __kernel_time_t         tv_sec;         /* seconds */
+       __kernel_suseconds_t    tv_usec;        /* microseconds */
 };
 
 struct timezone {
@@ -105,6 +105,7 @@ extern unsigned long read_persistent_clock(void);
 extern int update_persistent_clock(struct timespec now);
 extern int no_sync_cmos_clock __read_mostly;
 void timekeeping_init(void);
+extern int timekeeping_suspended;
 
 unsigned long get_seconds(void);
 struct timespec current_kernel_time(void);
@@ -112,6 +113,21 @@ struct timespec current_kernel_time(void);
 #define CURRENT_TIME           (current_kernel_time())
 #define CURRENT_TIME_SEC       ((struct timespec) { get_seconds(), 0 })
 
+/* Some architectures do not supply their own clocksource.
+ * This is mainly the case in architectures that get their
+ * inter-tick times by reading the counter on their interval
+ * timer. Since these timers wrap every tick, they're not really
+ * useful as clocksources. Wrapping them to act like one is possible
+ * but not very efficient. So we provide a callout these arches
+ * can implement for use with the jiffies clocksource to provide
+ * finer then tick granular time.
+ */
+#ifdef CONFIG_ARCH_USES_GETTIMEOFFSET
+extern u32 arch_gettimeoffset(void);
+#else
+static inline u32 arch_gettimeoffset(void) { return 0; }
+#endif
+
 extern void do_gettimeofday(struct timeval *tv);
 extern int do_settimeofday(struct timespec *tv);
 extern int do_sys_settimeofday(struct timespec *tv, struct timezone *tz);