Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland...

[linux-2.6] / arch / x86_64 / kernel / vsyscall.c

diff --git a/arch/x86_64/kernel/vsyscall.c b/arch/x86_64/kernel/vsyscall.c
index dc32cef961950915fbaa185e36ab802d5f7cea3b..06c34949bfdc9d09e90a219765aeb711c67e85a4 100644 (file)
--- a/arch/x86_64/kernel/vsyscall.c
+++ b/arch/x86_64/kernel/vsyscall.c
@@ -42,6 +42,7 @@
 #include <asm/segment.h>
 #include <asm/desc.h>
 #include <asm/topology.h>
+#include <asm/vgtod.h>
 
 #define __vsyscall(nr) __attribute__ ((unused,__section__(".vsyscall_" #nr)))
 #define __syscall_clobber "r11","rcx","memory"
@@ -57,26 +58,9 @@
  * - writen by timer interrupt or systcl (/proc/sys/kernel/vsyscall64)
  * Try to keep this structure as small as possible to avoid cache line ping pongs
  */
-struct vsyscall_gtod_data_t {
-       seqlock_t       lock;
-
-       /* open coded 'struct timespec' */
-       time_t          wall_time_sec;
-       u32             wall_time_nsec;
-
-       int             sysctl_enabled;
-       struct timezone sys_tz;
-       struct { /* extract of a clocksource struct */
-               cycle_t (*vread)(void);
-               cycle_t cycle_last;
-               cycle_t mask;
-               u32     mult;
-               u32     shift;
-       } clock;
-};
 int __vgetcpu_mode __section_vgetcpu_mode;
 
-struct vsyscall_gtod_data_t __vsyscall_gtod_data __section_vsyscall_gtod_data =
+struct vsyscall_gtod_data __vsyscall_gtod_data __section_vsyscall_gtod_data =
 {
        .lock = SEQLOCK_UNLOCKED,
        .sysctl_enabled = 1,
@@ -96,6 +80,8 @@ void update_vsyscall(struct timespec *wall_time, struct clocksource *clock)
        vsyscall_gtod_data.wall_time_sec = wall_time->tv_sec;
        vsyscall_gtod_data.wall_time_nsec = wall_time->tv_nsec;
        vsyscall_gtod_data.sys_tz = sys_tz;
+       vsyscall_gtod_data.wall_time_nsec = wall_time->tv_nsec;
+       vsyscall_gtod_data.wall_to_monotonic = wall_to_monotonic;
        write_sequnlock_irqrestore(&vsyscall_gtod_data.lock, flags);
 }
 
@@ -175,10 +161,13 @@ int __vsyscall(0) vgettimeofday(struct timeval * tv, struct timezone * tz)
  * unlikely */
 time_t __vsyscall(1) vtime(time_t *t)
 {
+       struct timeval tv;
        time_t result;
        if (unlikely(!__vsyscall_gtod_data.sysctl_enabled))
                return time_syscall(t);
-       result = __vsyscall_gtod_data.wall_time_sec;
+
+       vgettimeofday(&tv, 0);
+       result = tv.tv_sec;
        if (t)
                *t = result;
        return result;
@@ -327,7 +316,7 @@ static int __cpuinit
 cpu_vsyscall_notifier(struct notifier_block *n, unsigned long action, void *arg)
 {
        long cpu = (long)arg;
-       if (action == CPU_ONLINE)
+       if (action == CPU_ONLINE || action == CPU_ONLINE_FROZEN)
                smp_call_function_single(cpu, cpu_vsyscall_init, NULL, 0, 1);
        return NOTIFY_DONE;
 }