openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

cpufreq: OMAP: remove loops_per_jiffy recalculate for smp 

With ARM smp common code recalculating loops_per_jiffy in a cpufreq
transiton notifier call, the loops_per_jiffy recalculate in omap-cpufreq
driver becomes redundant.  Remove it.

Signed-off-by: Richard Zhao <richard.zhao@freescale.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
This commit is contained in:
Richard Zhao 2012-09-14 21:15:05 +02:00 committed by Rafael J. Wysocki
parent 21ce35dc79
commit cd664cc3a5
1 changed files with 0 additions and 35 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
drivers/cpufreq/omap-cpufreq.c
View File

@ -40,16 +40,6 @@
/* OPP tolerance in percentage */ /* OPP tolerance in percentage */
#define OPP_TOLERANCE 4 #define OPP_TOLERANCE 4
#ifdef CONFIG_SMP
struct lpj_info {
unsigned long ref;
unsigned int freq;
};
static DEFINE_PER_CPU(struct lpj_info, lpj_ref);
static struct lpj_info global_lpj_ref;
#endif
static struct cpufreq_frequency_table *freq_table; static struct cpufreq_frequency_table *freq_table;
static atomic_t freq_table_users = ATOMIC_INIT(0); static atomic_t freq_table_users = ATOMIC_INIT(0);
static struct clk *mpu_clk; static struct clk *mpu_clk;
@ -161,31 +151,6 @@ static int omap_target(struct cpufreq_policy *policy,
} }
freqs.new = omap_getspeed(policy->cpu); freqs.new = omap_getspeed(policy->cpu);
#ifdef CONFIG_SMP
/*
* Note that loops_per_jiffy is not updated on SMP systems in
* cpufreq driver. So, update the per-CPU loops_per_jiffy value
* on frequency transition. We need to update all dependent CPUs.
*/
for_each_cpu(i, policy->cpus) {
struct lpj_info *lpj = &per_cpu(lpj_ref, i);
if (!lpj->freq) {
lpj->ref = per_cpu(cpu_data, i).loops_per_jiffy;
lpj->freq = freqs.old;
}
per_cpu(cpu_data, i).loops_per_jiffy =
cpufreq_scale(lpj->ref, lpj->freq, freqs.new);
}
/* And don't forget to adjust the global one */
if (!global_lpj_ref.freq) {
global_lpj_ref.ref = loops_per_jiffy;
global_lpj_ref.freq = freqs.old;
}
loops_per_jiffy = cpufreq_scale(global_lpj_ref.ref, global_lpj_ref.freq,
freqs.new);
#endif
done: done:
/* notifiers */ /* notifiers */