[IA64] pvops: add to hooks, pv_time_ops, for steal time accounting.

[pandora-kernel.git] / kernel / posix-cpu-timers.c

diff --git a/kernel/posix-cpu-timers.c b/kernel/posix-cpu-timers.c
index 0b7c82a..f1525ad 100644 (file)
--- a/kernel/posix-cpu-timers.c
+++ b/kernel/posix-cpu-timers.c
@@ -4,8 +4,9 @@
 
 #include <linux/sched.h>
 #include <linux/posix-timers.h>
-#include <asm/uaccess.h>
 #include <linux/errno.h>
+#include <linux/math64.h>
+#include <asm/uaccess.h>
 
 static int check_clock(const clockid_t which_clock)
 {
@@ -20,7 +21,7 @@ static int check_clock(const clockid_t which_clock)
                return 0;
 
        read_lock(&tasklist_lock);
-       p = find_task_by_pid(pid);
+       p = find_task_by_vpid(pid);
        if (!p || !(CPUCLOCK_PERTHREAD(which_clock) ?
                   same_thread_group(p, current) : thread_group_leader(p))) {
                error = -EINVAL;
@@ -47,12 +48,10 @@ static void sample_to_timespec(const clockid_t which_clock,
                               union cpu_time_count cpu,
                               struct timespec *tp)
 {
-       if (CPUCLOCK_WHICH(which_clock) == CPUCLOCK_SCHED) {
-               tp->tv_sec = div_long_long_rem(cpu.sched,
-                                              NSEC_PER_SEC, &tp->tv_nsec);
-       } else {
+       if (CPUCLOCK_WHICH(which_clock) == CPUCLOCK_SCHED)
+               *tp = ns_to_timespec(cpu.sched);
+       else
                cputime_to_timespec(cpu.cpu, tp);
-       }
 }
 
 static inline int cpu_time_before(const clockid_t which_clock,
@@ -305,7 +304,7 @@ int posix_cpu_clock_get(const clockid_t which_clock, struct timespec *tp)
                 */
                struct task_struct *p;
                rcu_read_lock();
-               p = find_task_by_pid(pid);
+               p = find_task_by_vpid(pid);
                if (p) {
                        if (CPUCLOCK_PERTHREAD(which_clock)) {
                                if (same_thread_group(p, current)) {
@@ -354,7 +353,7 @@ int posix_cpu_timer_create(struct k_itimer *new_timer)
                if (pid == 0) {
                        p = current;
                } else {
-                       p = find_task_by_pid(pid);
+                       p = find_task_by_vpid(pid);
                        if (p && !same_thread_group(p, current))
                                p = NULL;
                }
@@ -362,7 +361,7 @@ int posix_cpu_timer_create(struct k_itimer *new_timer)
                if (pid == 0) {
                        p = current->group_leader;
                } else {
-                       p = find_task_by_pid(pid);
+                       p = find_task_by_vpid(pid);
                        if (p && !thread_group_leader(p))
                                p = NULL;
                }
@@ -1087,45 +1086,45 @@ static void check_process_timers(struct task_struct *tsk,
        maxfire = 20;
        prof_expires = cputime_zero;
        while (!list_empty(timers)) {
-               struct cpu_timer_list *t = list_first_entry(timers,
+               struct cpu_timer_list *tl = list_first_entry(timers,
                                                      struct cpu_timer_list,
                                                      entry);
-               if (!--maxfire || cputime_lt(ptime, t->expires.cpu)) {
-                       prof_expires = t->expires.cpu;
+               if (!--maxfire || cputime_lt(ptime, tl->expires.cpu)) {
+                       prof_expires = tl->expires.cpu;
                        break;
                }
-               t->firing = 1;
-               list_move_tail(&t->entry, firing);
+               tl->firing = 1;
+               list_move_tail(&tl->entry, firing);
        }
 
        ++timers;
        maxfire = 20;
        virt_expires = cputime_zero;
        while (!list_empty(timers)) {
-               struct cpu_timer_list *t = list_first_entry(timers,
+               struct cpu_timer_list *tl = list_first_entry(timers,
                                                      struct cpu_timer_list,
                                                      entry);
-               if (!--maxfire || cputime_lt(utime, t->expires.cpu)) {
-                       virt_expires = t->expires.cpu;
+               if (!--maxfire || cputime_lt(utime, tl->expires.cpu)) {
+                       virt_expires = tl->expires.cpu;
                        break;
                }
-               t->firing = 1;
-               list_move_tail(&t->entry, firing);
+               tl->firing = 1;
+               list_move_tail(&tl->entry, firing);
        }
 
        ++timers;
        maxfire = 20;
        sched_expires = 0;
        while (!list_empty(timers)) {
-               struct cpu_timer_list *t = list_first_entry(timers,
+               struct cpu_timer_list *tl = list_first_entry(timers,
                                                      struct cpu_timer_list,
                                                      entry);
-               if (!--maxfire || sum_sched_runtime < t->expires.sched) {
-                       sched_expires = t->expires.sched;
+               if (!--maxfire || sum_sched_runtime < tl->expires.sched) {
+                       sched_expires = tl->expires.sched;
                        break;
                }
-               t->firing = 1;
-               list_move_tail(&t->entry, firing);
+               tl->firing = 1;
+               list_move_tail(&tl->entry, firing);
        }
 
        /*