diff options
| author | Frederic Weisbecker <fweisbec@gmail.com> | 2017-01-31 04:09:19 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-02-01 09:13:47 +0100 |
| commit | 7fb1327ee9b92fca27662f9b9d60c7c3376d6c69 (patch) | |
| tree | 7a75b34cf7db3d04a6e70b7f78c0b886ab45074a /drivers/cpufreq | |
| parent | ba03ce822db234f8acb559de4a317a5c1f95c029 (diff) | |
| download | linux-7fb1327ee9b92fca27662f9b9d60c7c3376d6c69.tar.bz2 | |
sched/cputime: Convert kcpustat to nsecs
Kernel CPU stats are stored in cputime_t which is an architecture
defined type, and hence a bit opaque and requiring accessors and mutators
for any operation.
Converting them to nsecs simplifies the code and is one step toward
the removal of cputime_t in the core code.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Stanislaw Gruszka <sgruszka@redhat.com>
Cc: Wanpeng Li <wanpeng.li@hotmail.com>
Link: http://lkml.kernel.org/r/1485832191-26889-4-git-send-email-fweisbec@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/cpufreq')
| -rw-r--r-- | drivers/cpufreq/cpufreq.c | 6 | ||||
| -rw-r--r-- | drivers/cpufreq/cpufreq_governor.c | 2 | ||||
| -rw-r--r-- | drivers/cpufreq/cpufreq_stats.c | 1 |
3 files changed, 4 insertions, 5 deletions
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index cc475eff90b3..3e9b319a2e79 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -132,7 +132,7 @@ static inline u64 get_cpu_idle_time_jiffy(unsigned int cpu, u64 *wall) u64 cur_wall_time; u64 busy_time; - cur_wall_time = jiffies64_to_cputime64(get_jiffies_64()); + cur_wall_time = jiffies64_to_nsecs(get_jiffies_64()); busy_time = kcpustat_cpu(cpu).cpustat[CPUTIME_USER]; busy_time += kcpustat_cpu(cpu).cpustat[CPUTIME_SYSTEM]; @@ -143,9 +143,9 @@ static inline u64 get_cpu_idle_time_jiffy(unsigned int cpu, u64 *wall) idle_time = cur_wall_time - busy_time; if (wall) - *wall = cputime_to_usecs(cur_wall_time); + *wall = div_u64(cur_wall_time, NSEC_PER_USEC); - return cputime_to_usecs(idle_time); + return div_u64(idle_time, NSEC_PER_USEC); } u64 get_cpu_idle_time(unsigned int cpu, u64 *wall, int io_busy) diff --git a/drivers/cpufreq/cpufreq_governor.c b/drivers/cpufreq/cpufreq_governor.c index 0196467280bd..631bd2c86c5e 100644 --- a/drivers/cpufreq/cpufreq_governor.c +++ b/drivers/cpufreq/cpufreq_governor.c @@ -152,7 +152,7 @@ unsigned int dbs_update(struct cpufreq_policy *policy) if (ignore_nice) { u64 cur_nice = kcpustat_cpu(j).cpustat[CPUTIME_NICE]; - idle_time += cputime_to_usecs(cur_nice - j_cdbs->prev_cpu_nice); + idle_time += div_u64(cur_nice - j_cdbs->prev_cpu_nice, NSEC_PER_USEC); j_cdbs->prev_cpu_nice = cur_nice; } diff --git a/drivers/cpufreq/cpufreq_stats.c b/drivers/cpufreq/cpufreq_stats.c index ac284e66839c..17048bbec287 100644 --- a/drivers/cpufreq/cpufreq_stats.c +++ b/drivers/cpufreq/cpufreq_stats.c @@ -13,7 +13,6 @@ #include <linux/cpufreq.h> #include <linux/module.h> #include <linux/slab.h> -#include <linux/cputime.h> static DEFINE_SPINLOCK(cpufreq_stats_lock); |