x86: printk kernel version in WARN_ON and other dump_stack users

[linux-2.6] / arch / x86 / kernel / vsyscall_64.c

diff --git a/arch/x86/kernel/vsyscall_64.c b/arch/x86/kernel/vsyscall_64.c
index 06c34949bfdc9d09e90a219765aeb711c67e85a4..ad4005c6d4a1113d47c289a06d46328743fd2b2b 100644 (file)
--- a/arch/x86/kernel/vsyscall_64.c
+++ b/arch/x86/kernel/vsyscall_64.c
@@ -1,6 +1,4 @@
 /*
- *  linux/arch/x86_64/kernel/vsyscall.c
- *
  *  Copyright (C) 2001 Andrea Arcangeli <andrea@suse.de> SuSE
  *  Copyright 2003 Andi Kleen, SuSE Labs.
  *
@@ -50,12 +48,12 @@
        ({unsigned long v;              \
        extern char __vsyscall_0;       \
          asm("" : "=r" (v) : "0" (x)); \
-         ((v - VSYSCALL_FIRST_PAGE) + __pa_symbol(&__vsyscall_0)); })
+         ((v - VSYSCALL_START) + __pa_symbol(&__vsyscall_0)); })
 
 /*
  * vsyscall_gtod_data contains data that is :
  * - readonly from vsyscalls
- * - writen by timer interrupt or systcl (/proc/sys/kernel/vsyscall64)
+ * - written by timer interrupt or systcl (/proc/sys/kernel/vsyscall64)
  * Try to keep this structure as small as possible to avoid cache line ping pongs
  */
 int __vgetcpu_mode __section_vgetcpu_mode;
@@ -66,6 +64,16 @@ struct vsyscall_gtod_data __vsyscall_gtod_data __section_vsyscall_gtod_data =
        .sysctl_enabled = 1,
 };
 
+void update_vsyscall_tz(void)
+{
+       unsigned long flags;
+
+       write_seqlock_irqsave(&vsyscall_gtod_data.lock, flags);
+       /* sys_tz has changed */
+       vsyscall_gtod_data.sys_tz = sys_tz;
+       write_sequnlock_irqrestore(&vsyscall_gtod_data.lock, flags);
+}
+
 void update_vsyscall(struct timespec *wall_time, struct clocksource *clock)
 {
        unsigned long flags;
@@ -79,8 +87,6 @@ void update_vsyscall(struct timespec *wall_time, struct clocksource *clock)
        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;
-       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);
 }
@@ -166,7 +172,7 @@ time_t __vsyscall(1) vtime(time_t *t)
        if (unlikely(!__vsyscall_gtod_data.sysctl_enabled))
                return time_syscall(t);
 
-       vgettimeofday(&tv, 0);
+       vgettimeofday(&tv, NULL);
        result = tv.tv_sec;
        if (t)
                *t = result;
@@ -260,18 +266,10 @@ out:
        return ret;
 }
 
-static int vsyscall_sysctl_nostrat(ctl_table *t, int __user *name, int nlen,
-                               void __user *oldval, size_t __user *oldlenp,
-                               void __user *newval, size_t newlen)
-{
-       return -ENOSYS;
-}
-
 static ctl_table kernel_table2[] = {
-       { .ctl_name = 99, .procname = "vsyscall64",
+       { .procname = "vsyscall64",
          .data = &vsyscall_gtod_data.sysctl_enabled, .maxlen = sizeof(int),
          .mode = 0644,
-         .strategy = vsyscall_sysctl_nostrat,
          .proc_handler = vsyscall_sysctl_change },
        {}
 };
@@ -291,9 +289,9 @@ static void __cpuinit vsyscall_set_cpu(int cpu)
        unsigned long *d;
        unsigned long node = 0;
 #ifdef CONFIG_NUMA
-       node = cpu_to_node[cpu];
+       node = cpu_to_node(cpu);
 #endif
-       if (cpu_has(&cpu_data[cpu], X86_FEATURE_RDTSCP))
+       if (cpu_has(&cpu_data(cpu), X86_FEATURE_RDTSCP))
                write_rdtscp_aux((node << 12) | cpu);
 
        /* Store cpu number in limit so that it can be loaded quickly