Merge branch 'cputime' of git://git390.osdl.marist.edu/pub/scm/linux-2.6

* 'cputime' of git://git390.osdl.marist.edu/pub/scm/linux-2.6:
  [PATCH] fast vdso implementation for CLOCK_THREAD_CPUTIME_ID
  [PATCH] improve idle cputime accounting
  [PATCH] improve precision of idle time detection.
  [PATCH] improve precision of process accounting.
  [PATCH] idle cputime accounting
  [PATCH] fix scaled & unscaled cputime accounting

1 files changed, 10 insertions, 8 deletions

diff --git a/arch/ia64/kernel/time.c b/arch/ia64/kernel/time.c
index 65c10a42c88..f0ebb342409 100644
--- a/arch/ia64/kernel/time.c
+++ b/arch/ia64/kernel/time.c
@@ -93,13 +93,14 @@ void ia64_account_on_switch(struct task_struct *prev, struct task_struct *next)
         now = ia64_get_itc();
 
         delta_stime = cycle_to_cputime(pi->ac_stime + (now - pi->ac_stamp));
-        account_system_time(prev, 0, delta_stime);
-        account_system_time_scaled(prev, delta_stime);
+        if (idle_task(smp_processor_id()) != prev)
+                account_system_time(prev, 0, delta_stime, delta_stime);
+        else
+                account_idle_time(delta_stime);
 
         if (pi->ac_utime) {
                 delta_utime = cycle_to_cputime(pi->ac_utime);
-                account_user_time(prev, delta_utime);
-                account_user_time_scaled(prev, delta_utime);
+                account_user_time(prev, delta_utime, delta_utime);
         }
 
         pi->ac_stamp = ni->ac_stamp = now;
@@ -122,8 +123,10 @@ void account_system_vtime(struct task_struct *tsk)
         now = ia64_get_itc();
 
         delta_stime = cycle_to_cputime(ti->ac_stime + (now - ti->ac_stamp));
-        account_system_time(tsk, 0, delta_stime);
-        account_system_time_scaled(tsk, delta_stime);
+        if (irq_count() || idle_task(smp_processor_id()) != tsk)
+                account_system_time(tsk, 0, delta_stime, delta_stime);
+        else
+                account_idle_time(delta_stime);
         ti->ac_stime = 0;
 
         ti->ac_stamp = now;
@@ -143,8 +146,7 @@ void account_process_tick(struct task_struct *p, int user_tick)
 
         if (ti->ac_utime) {
                 delta_utime = cycle_to_cputime(ti->ac_utime);
-                account_user_time(p, delta_utime);
-                account_user_time_scaled(p, delta_utime);
+                account_user_time(p, delta_utime, delta_utime);
                 ti->ac_utime = 0;
         }
 }