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sched/cputime, powerpc: Remove cputime_last_delta global variable

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Since commit:

  cf9efce0ce ("powerpc: Account time using timebase rather than PURR")

cputime_last_delta is not initialized to other value than 0, hence it's
not used except zero check and cputime_to_scaled() just returns
the argument.

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Acked-by: Paul Mackerras <paulus@ozlabs.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Michael Neuling <mikey@neuling.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1479175612-14718-2-git-send-email-fweisbec@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Stanislaw Gruszka 2016-11-15 03:06:49 +01:00 committed by Ingo Molnar
parent 9846d50df3
commit 7008eb997b
2 changed files with 0 additions and 9 deletions
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7
arch/powerpc/include/asm/cputime.h
View File

@ -46,8 +46,6 @@ extern cputime_t cputime_one_jiffy;
* Convert cputime <-> jiffies
*/
extern u64 __cputime_jiffies_factor;
DECLARE_PER_CPU(unsigned long, cputime_last_delta);
DECLARE_PER_CPU(unsigned long, cputime_scaled_last_delta);
static inline unsigned long cputime_to_jiffies(const cputime_t ct)
{
@ -58,11 +56,6 @@ static inline unsigned long cputime_to_jiffies(const cputime_t ct)
* the last scaled to real ratio */
static inline cputime_t cputime_to_scaled(const cputime_t ct)
{
if (cpu_has_feature(CPU_FTR_SPURR) &&
__this_cpu_read(cputime_last_delta))
return (__force u64) ct *
__this_cpu_read(cputime_scaled_last_delta) /
__this_cpu_read(cputime_last_delta);
return ct;
}

2
arch/powerpc/kernel/time.c
View File

@ -164,8 +164,6 @@ u64 __cputime_sec_factor;
EXPORT_SYMBOL(__cputime_sec_factor);
u64 __cputime_clockt_factor;
EXPORT_SYMBOL(__cputime_clockt_factor);
DEFINE_PER_CPU(unsigned long, cputime_last_delta);
DEFINE_PER_CPU(unsigned long, cputime_scaled_last_delta);
cputime_t cputime_one_jiffy;