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authorFrederic Weisbecker <fweisbec@gmail.com>2013-01-16 18:02:04 +0100
committerFrederic Weisbecker <fweisbec@gmail.com>2013-01-27 19:23:25 +0100
commitae8dda5c473bf1a85913942adcaac449e5754bf3 (patch)
tree7cb2d086198296ac862c4c96a627c3686af17842 /kernel/sched/cputime.c
parent39613766e8826756a4bf8c74274eb971c3c1d929 (diff)
downloadlinaro-lsk-ae8dda5c473bf1a85913942adcaac449e5754bf3.tar.gz
cputime: Move default nsecs_to_cputime() to jiffies based cputime file
If the architecture doesn't provide an implementation of nsecs_to_cputime(), the cputime accounting core uses a default one that converts the nanoseconds to jiffies. However this only makes sense if we use the jiffies based cputime. For now it doesn't matter much because this API is only called on code that uses jiffies based cputime accounting. But the code may evolve and this API may be used more broadly in the future. Keeping this default implementation around is very error prone as it may introduce a bug and hide it on architectures that don't override this API. Fix this by moving this definition to the jiffies based cputime headers as it is the only place where it belongs to. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Li Zhong <zhong@linux.vnet.ibm.com> Cc: Namhyung Kim <namhyung.kim@lge.com> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/sched/cputime.c')
-rw-r--r--kernel/sched/cputime.c4
1 files changed, 0 insertions, 4 deletions
diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c
index 293b202fcf7..5849448b981 100644
--- a/kernel/sched/cputime.c
+++ b/kernel/sched/cputime.c
@@ -505,10 +505,6 @@ EXPORT_SYMBOL_GPL(vtime_account);
#else
-#ifndef nsecs_to_cputime
-# define nsecs_to_cputime(__nsecs) nsecs_to_jiffies(__nsecs)
-#endif
-
static cputime_t scale_utime(cputime_t utime, cputime_t rtime, cputime_t total)
{
u64 temp = (__force u64) rtime;