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authorMartin Schwidefsky <schwidefsky@de.ibm.com>2008-12-31 15:11:37 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2008-12-31 15:11:46 +0100
commit457533a7d3402d1d91fbc125c8bd1bd16dcd3cd4 (patch)
treecbe69310a66176dea2a9e7bd201db95efe4a2890 /arch/powerpc/kernel/time.c
parent6a94cb73064c952255336cc57731904174b2c58f (diff)
[PATCH] fix scaled & unscaled cputime accounting
The utimescaled / stimescaled fields in the task structure and the global cpustat should be set on all architectures. On s390 the calls to account_user_time_scaled and account_system_time_scaled never have been added. In addition system time that is accounted as guest time to the user time of a process is accounted to the scaled system time instead of the scaled user time. To fix the bugs and to prevent future forgetfulness this patch merges account_system_time_scaled into account_system_time and account_user_time_scaled into account_user_time. Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: Chris Wright <chrisw@sous-sol.org> Cc: Michael Neuling <mikey@neuling.org> Acked-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/powerpc/kernel/time.c')
-rw-r--r--arch/powerpc/kernel/time.c7
1 files changed, 2 insertions, 5 deletions
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index e1f3a514042..92650ccad2e 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -256,8 +256,7 @@ void account_system_vtime(struct task_struct *tsk)
delta += sys_time;
get_paca()->system_time = 0;
}
- account_system_time(tsk, 0, delta);
- account_system_time_scaled(tsk, deltascaled);
+ account_system_time(tsk, 0, delta, deltascaled);
per_cpu(cputime_last_delta, smp_processor_id()) = delta;
per_cpu(cputime_scaled_last_delta, smp_processor_id()) = deltascaled;
local_irq_restore(flags);
@@ -275,10 +274,8 @@ void account_process_tick(struct task_struct *tsk, int user_tick)
utime = get_paca()->user_time;
get_paca()->user_time = 0;
- account_user_time(tsk, utime);
-
utimescaled = cputime_to_scaled(utime);
- account_user_time_scaled(tsk, utimescaled);
+ account_user_time(tsk, utime, utimescaled);
}
/*