4 files changed, 10 insertions, 6 deletions

diff --git a/fs/proc/array.c b/fs/proc/array.c
index 98e78e2f18d6..680c913575f0 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -440,8 +440,9 @@ static int do_task_stat(struct task_struct *task, char * buffer, int whole)
 
         /* Temporary variable needed for gcc-2.96 */
         /* convert timespec -> nsec*/
-        start_time = (unsigned long long)task->start_time.tv_sec * NSEC_PER_SEC
-                                + task->start_time.tv_nsec;
+        start_time =
+                (unsigned long long)task->real_start_time.tv_sec * NSEC_PER_SEC
+                                + task->real_start_time.tv_nsec;
         /* convert nsec -> ticks */
         start_time = nsec_to_clock_t(start_time);
 
diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c
index 5fd49e47f83a..19c9cbf1c320 100644
--- a/fs/proc/proc_misc.c
+++ b/fs/proc/proc_misc.c
@@ -443,12 +443,12 @@ static int show_stat(struct seq_file *p, void *v)
         unsigned long jif;
         cputime64_t user, nice, system, idle, iowait, irq, softirq, steal;
         u64 sum = 0;
+        struct timespec boottime;
 
         user = nice = system = idle = iowait =
                 irq = softirq = steal = cputime64_zero;
-        jif = - wall_to_monotonic.tv_sec;
-        if (wall_to_monotonic.tv_nsec)
-                --jif;
+        getboottime(&boottime);
+        jif = boottime.tv_sec;
 
         for_each_possible_cpu(i) {
                 int j;
diff --git a/include/linux/sched.h b/include/linux/sched.h
index cfb680585ab8..3cffc1204663 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -972,7 +972,8 @@ struct task_struct {
         unsigned int rt_priority;
         cputime_t utime, stime;
         unsigned long nvcsw, nivcsw; /* context switch counts */
-        struct timespec start_time;
+        struct timespec start_time;             /* monotonic time */
+        struct timespec real_start_time;        /* boot based time */
 /* mm fault and swap info: this can arguably be seen as either mm-specific or thread-specific */
         unsigned long min_flt, maj_flt;
 
diff --git a/kernel/fork.c b/kernel/fork.c
index da3a155bba0d..344d693fdc78 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1059,6 +1059,8 @@ static struct task_struct *copy_process(unsigned long clone_flags,
 
         p->lock_depth = -1;             /* -1 = no lock */
         do_posix_clock_monotonic_gettime(&p->start_time);
+        p->real_start_time = p->start_time;
+        monotonic_to_bootbased(&p->real_start_time);
         p->security = NULL;
         p->io_context = NULL;
         p->io_wait = NULL;