diff options
| author | Jisheng Zhang <jszhang@marvell.com> | 2016-06-27 10:07:18 (GMT) |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2016-06-27 22:04:04 (GMT) |
| commit | 4a7cb7a96aa32e34777b263fbf372543fb85ddea (patch) | |
| tree | e6aa6dd0bf9a2fdd11edc8286c2963c6aa8753ab | |
| parent | 29327c84baebec3549b9775dc8de3d26343720cb (diff) | |
| download | linux-4a7cb7a96aa32e34777b263fbf372543fb85ddea.tar.xz | |
intel_pstate: Declare pid_params/pstate_funcs/hwp_active __read_mostly
pid_params is written once by copy_pid_params() during initialization,
and thereafter is mostly read by hot path intel_pstate_update_util().
The read of pid_params gets more after commit a4675fbc4a7a ("cpufreq:
intel_pstate: Replace timers with utilization update callbacks")
pstate_funcs is written once by copy_cpu_funcs() during initialization,
and thereafter is mostly read by hot path intel_pstate_update_util()
hwp_active is written to once during initialization and thereafter is
mostly read by hot path intel_pstate_update_util().
The fact that they are mostly read and not written to makes them
candidates for __read_mostly declarations.
Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| -rw-r--r-- | drivers/cpufreq/intel_pstate.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index fc71f92..2ed7955 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -282,9 +282,9 @@ struct cpu_defaults { static inline int32_t get_target_pstate_use_performance(struct cpudata *cpu); static inline int32_t get_target_pstate_use_cpu_load(struct cpudata *cpu); -static struct pstate_adjust_policy pid_params; -static struct pstate_funcs pstate_funcs; -static int hwp_active; +static struct pstate_adjust_policy pid_params __read_mostly; +static struct pstate_funcs pstate_funcs __read_mostly; +static int hwp_active __read_mostly; #ifdef CONFIG_ACPI static bool acpi_ppc; |