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    Subject[PATCH v3 1/4] cpufreq: Introduce governor flags
    Date
    From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

    A new cpufreq governor flag will be added subsequently, so replace
    the bool dynamic_switching fleid in struct cpufreq_governor with a
    flags field and introduce CPUFREQ_GOV_DYNAMIC_SWITCHING to set for
    the "dynamic switching" governors instead of it.

    No intentional functional impact.

    Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
    Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
    ---
    drivers/cpufreq/cpufreq.c | 2 +-
    drivers/cpufreq/cpufreq_governor.h | 2 +-
    include/linux/cpufreq.h | 9 +++++++--
    kernel/sched/cpufreq_schedutil.c | 2 +-
    4 files changed, 10 insertions(+), 5 deletions(-)

    Index: linux-pm/drivers/cpufreq/cpufreq.c
    ===================================================================
    --- linux-pm.orig/drivers/cpufreq/cpufreq.c
    +++ linux-pm/drivers/cpufreq/cpufreq.c
    @@ -2254,7 +2254,7 @@ static int cpufreq_init_governor(struct
    return -EINVAL;

    /* Platform doesn't want dynamic frequency switching ? */
    - if (policy->governor->dynamic_switching &&
    + if (policy->governor->flags & CPUFREQ_GOV_DYNAMIC_SWITCHING &&
    cpufreq_driver->flags & CPUFREQ_NO_AUTO_DYNAMIC_SWITCHING) {
    struct cpufreq_governor *gov = cpufreq_fallback_governor();

    Index: linux-pm/drivers/cpufreq/cpufreq_governor.h
    ===================================================================
    --- linux-pm.orig/drivers/cpufreq/cpufreq_governor.h
    +++ linux-pm/drivers/cpufreq/cpufreq_governor.h
    @@ -156,7 +156,7 @@ void cpufreq_dbs_governor_limits(struct
    #define CPUFREQ_DBS_GOVERNOR_INITIALIZER(_name_) \
    { \
    .name = _name_, \
    - .dynamic_switching = true, \
    + .flags = CPUFREQ_GOV_DYNAMIC_SWITCHING, \
    .owner = THIS_MODULE, \
    .init = cpufreq_dbs_governor_init, \
    .exit = cpufreq_dbs_governor_exit, \
    Index: linux-pm/include/linux/cpufreq.h
    ===================================================================
    --- linux-pm.orig/include/linux/cpufreq.h
    +++ linux-pm/include/linux/cpufreq.h
    @@ -565,12 +565,17 @@ struct cpufreq_governor {
    char *buf);
    int (*store_setspeed) (struct cpufreq_policy *policy,
    unsigned int freq);
    - /* For governors which change frequency dynamically by themselves */
    - bool dynamic_switching;
    struct list_head governor_list;
    struct module *owner;
    + u8 flags;
    };

    +/* Governor flags */
    +
    +/* For governors which change frequency dynamically by themselves */
    +#define CPUFREQ_GOV_DYNAMIC_SWITCHING BIT(0)
    +
    +
    /* Pass a target to the cpufreq driver */
    unsigned int cpufreq_driver_fast_switch(struct cpufreq_policy *policy,
    unsigned int target_freq);
    Index: linux-pm/kernel/sched/cpufreq_schedutil.c
    ===================================================================
    --- linux-pm.orig/kernel/sched/cpufreq_schedutil.c
    +++ linux-pm/kernel/sched/cpufreq_schedutil.c
    @@ -881,7 +881,7 @@ static void sugov_limits(struct cpufreq_
    struct cpufreq_governor schedutil_gov = {
    .name = "schedutil",
    .owner = THIS_MODULE,
    - .dynamic_switching = true,
    + .flags = CPUFREQ_GOV_DYNAMIC_SWITCHING,
    .init = sugov_init,
    .exit = sugov_exit,
    .start = sugov_start,


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