[Xen-devel] [PATCH] cpufreq: align dbs timer

["Yu, Ke" <ke.yu@xxxxxxxxx>]

A very small patch to align cpufreq dbs timer, for better package C state 
residency

Signed-off-by: Yu Ke <ke.yu@xxxxxxxxx>

diff -r 3db34a1f8ac2 xen/drivers/cpufreq/cpufreq_ondemand.c
--- a/xen/drivers/cpufreq/cpufreq_ondemand.c
+++ b/xen/drivers/cpufreq/cpufreq_ondemand.c
@@ -178,7 +178,8 @@ static void do_dbs_timer(void *dbs)
 
     dbs_check_cpu(dbs_info);
 
-    set_timer(&dbs_timer[dbs_info->cpu], NOW()+dbs_tuners_ins.sampling_rate);
+    set_timer(&dbs_timer[dbs_info->cpu],
+            align_timer(NOW() , dbs_tuners_ins.sampling_rate));
 }
 
 static void dbs_timer_init(struct cpu_dbs_info_s *dbs_info)

Attachment: cpufreq-align-dbs-timer.patch
Description: cpufreq-align-dbs-timer.patch

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