time: Convert x86_64 to using new update_vsyscall

[~andy/linux] / arch / x86 / kernel / vsyscall_64.c

diff --git a/arch/x86/kernel/vsyscall_64.c b/arch/x86/kernel/vsyscall_64.c
index 5db36caf4289cdab3fe04bf899f4826504ced389..3a3e8c9e280dcac9ba655491b4300c1d698bfb5a 100644 (file)
--- a/arch/x86/kernel/vsyscall_64.c
+++ b/arch/x86/kernel/vsyscall_64.c
@@ -18,6 +18,8 @@
  *  use the vDSO.
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/time.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
@@ -26,7 +28,7 @@
 #include <linux/jiffies.h>
 #include <linux/sysctl.h>
 #include <linux/topology.h>
-#include <linux/clocksource.h>
+#include <linux/timekeeper_internal.h>
 #include <linux/getcpu.h>
 #include <linux/cpu.h>
 #include <linux/smp.h>
@@ -80,49 +82,53 @@ void update_vsyscall_tz(void)
        vsyscall_gtod_data.sys_tz = sys_tz;
 }
 
-void update_vsyscall(struct timespec *wall_time, struct timespec *wtm,
-                       struct clocksource *clock, u32 mult)
+void update_vsyscall(struct timekeeper *tk)
 {
-       struct timespec monotonic;
+       struct vsyscall_gtod_data *vdata = &vsyscall_gtod_data;
 
-       write_seqcount_begin(&vsyscall_gtod_data.seq);
+       write_seqcount_begin(&vdata->seq);
 
        /* copy vsyscall data */
-       vsyscall_gtod_data.clock.vclock_mode    = clock->archdata.vclock_mode;
-       vsyscall_gtod_data.clock.cycle_last     = clock->cycle_last;
-       vsyscall_gtod_data.clock.mask           = clock->mask;
-       vsyscall_gtod_data.clock.mult           = mult;
-       vsyscall_gtod_data.clock.shift          = clock->shift;
-
-       vsyscall_gtod_data.wall_time_sec        = wall_time->tv_sec;
-       vsyscall_gtod_data.wall_time_nsec       = wall_time->tv_nsec;
+       vdata->clock.vclock_mode        = tk->clock->archdata.vclock_mode;
+       vdata->clock.cycle_last         = tk->clock->cycle_last;
+       vdata->clock.mask               = tk->clock->mask;
+       vdata->clock.mult               = tk->mult;
+       vdata->clock.shift              = tk->shift;
+
+       vdata->wall_time_sec            = tk->xtime_sec;
+       vdata->wall_time_snsec          = tk->xtime_nsec;
+
+       vdata->monotonic_time_sec       = tk->xtime_sec
+                                       + tk->wall_to_monotonic.tv_sec;
+       vdata->monotonic_time_snsec     = tk->xtime_nsec
+                                       + (tk->wall_to_monotonic.tv_nsec
+                                               << tk->shift);
+       while (vdata->monotonic_time_snsec >=
+                                       (((u64)NSEC_PER_SEC) << tk->shift)) {
+               vdata->monotonic_time_snsec -=
+                                       ((u64)NSEC_PER_SEC) << tk->shift;
+               vdata->monotonic_time_sec++;
+       }
 
-       monotonic = timespec_add(*wall_time, *wtm);
-       vsyscall_gtod_data.monotonic_time_sec   = monotonic.tv_sec;
-       vsyscall_gtod_data.monotonic_time_nsec  = monotonic.tv_nsec;
+       vdata->wall_time_coarse.tv_sec  = tk->xtime_sec;
+       vdata->wall_time_coarse.tv_nsec = (long)(tk->xtime_nsec >> tk->shift);
 
-       vsyscall_gtod_data.wall_time_coarse     = __current_kernel_time();
-       vsyscall_gtod_data.monotonic_time_coarse =
-               timespec_add(vsyscall_gtod_data.wall_time_coarse, *wtm);
+       vdata->monotonic_time_coarse    = timespec_add(vdata->wall_time_coarse,
+                                                       tk->wall_to_monotonic);
 
-       write_seqcount_end(&vsyscall_gtod_data.seq);
+       write_seqcount_end(&vdata->seq);
 }
 
 static void warn_bad_vsyscall(const char *level, struct pt_regs *regs,
                              const char *message)
 {
-       static DEFINE_RATELIMIT_STATE(rs, DEFAULT_RATELIMIT_INTERVAL, DEFAULT_RATELIMIT_BURST);
-       struct task_struct *tsk;
-
-       if (!show_unhandled_signals || !__ratelimit(&rs))
+       if (!show_unhandled_signals)
                return;
 
-       tsk = current;
-
-       printk("%s%s[%d] %s ip:%lx cs:%lx sp:%lx ax:%lx si:%lx di:%lx\n",
-              level, tsk->comm, task_pid_nr(tsk),
-              message, regs->ip, regs->cs,
-              regs->sp, regs->ax, regs->si, regs->di);
+       pr_notice_ratelimited("%s%s[%d] %s ip:%lx cs:%lx sp:%lx ax:%lx si:%lx di:%lx\n",
+                             level, current->comm, task_pid_nr(current),
+                             message, regs->ip, regs->cs,
+                             regs->sp, regs->ax, regs->si, regs->di);
 }
 
 static int addr_to_vsyscall_nr(unsigned long addr)