diff options
Diffstat (limited to 'meta-eas/recipes-kernel/linux/linux-renesas/0017-cpufreq-schedutil-enable-fast-switch-earlier.patch')
| -rw-r--r-- | meta-eas/recipes-kernel/linux/linux-renesas/0017-cpufreq-schedutil-enable-fast-switch-earlier.patch | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/meta-eas/recipes-kernel/linux/linux-renesas/0017-cpufreq-schedutil-enable-fast-switch-earlier.patch b/meta-eas/recipes-kernel/linux/linux-renesas/0017-cpufreq-schedutil-enable-fast-switch-earlier.patch new file mode 100644 index 0000000..487c01e --- /dev/null +++ b/meta-eas/recipes-kernel/linux/linux-renesas/0017-cpufreq-schedutil-enable-fast-switch-earlier.patch @@ -0,0 +1,79 @@ +From 9286a34be80e891aebc0193be28931a9f194b23d Mon Sep 17 00:00:00 2001 +From: Viresh Kumar <viresh.kumar@linaro.org> +Date: Tue, 15 Nov 2016 13:53:21 +0530 +Subject: [PATCH 17/92] cpufreq: schedutil: enable fast switch earlier + +The fast_switch_enabled flag will be used by both sugov_policy_alloc() +and sugov_policy_free() with a later patch. + +Prepare for that by moving the calls to enable and disable it to the +beginning of sugov_init() and end of sugov_exit(). + +Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> +Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> +(cherry picked from commit 4a71ce4348bb61740d411822357061f8bf870f4c) +Signed-off-by: Gaku Inami <gaku.inami.xw@bp.renesas.com> +--- + kernel/sched/cpufreq_schedutil.c | 17 +++++++++++------ + 1 file changed, 11 insertions(+), 6 deletions(-) + +diff --git a/kernel/sched/cpufreq_schedutil.c b/kernel/sched/cpufreq_schedutil.c +index 8c4e165..68f21bb 100644 +--- a/kernel/sched/cpufreq_schedutil.c ++++ b/kernel/sched/cpufreq_schedutil.c +@@ -416,9 +416,13 @@ static int sugov_init(struct cpufreq_policy *policy) + if (policy->governor_data) + return -EBUSY; + ++ cpufreq_enable_fast_switch(policy); ++ + sg_policy = sugov_policy_alloc(policy); +- if (!sg_policy) +- return -ENOMEM; ++ if (!sg_policy) { ++ ret = -ENOMEM; ++ goto disable_fast_switch; ++ } + + mutex_lock(&global_tunables_lock); + +@@ -456,8 +460,6 @@ static int sugov_init(struct cpufreq_policy *policy) + + out: + mutex_unlock(&global_tunables_lock); +- +- cpufreq_enable_fast_switch(policy); + return 0; + + fail: +@@ -468,6 +470,10 @@ static int sugov_init(struct cpufreq_policy *policy) + mutex_unlock(&global_tunables_lock); + + sugov_policy_free(sg_policy); ++ ++disable_fast_switch: ++ cpufreq_disable_fast_switch(policy); ++ + pr_err("initialization failed (error %d)\n", ret); + return ret; + } +@@ -478,8 +484,6 @@ static void sugov_exit(struct cpufreq_policy *policy) + struct sugov_tunables *tunables = sg_policy->tunables; + unsigned int count; + +- cpufreq_disable_fast_switch(policy); +- + mutex_lock(&global_tunables_lock); + + count = gov_attr_set_put(&tunables->attr_set, &sg_policy->tunables_hook); +@@ -490,6 +494,7 @@ static void sugov_exit(struct cpufreq_policy *policy) + mutex_unlock(&global_tunables_lock); + + sugov_policy_free(sg_policy); ++ cpufreq_disable_fast_switch(policy); + } + + static int sugov_start(struct cpufreq_policy *policy) +-- +1.9.1 + |