freq table is not per CPU but per policy and so it makes more sense to keep it within struct cpufreq_policy instead of a per-cpu variable.
This patch does it. Over that there is no need to set policy->freq_table to NULL in ->exit(), as policy structure is going to be freed soon.
Signed-off-by: Viresh Kumar viresh.kumar@linaro.org --- drivers/cpufreq/acpi-cpufreq.c | 1 - drivers/cpufreq/arm_big_little.c | 1 - drivers/cpufreq/cpufreq.c | 7 +++++- drivers/cpufreq/e_powersaver.c | 1 - drivers/cpufreq/freq_table.c | 46 ++++++----------------------------- drivers/cpufreq/ia64-acpi-cpufreq.c | 1 - drivers/cpufreq/loongson2_cpufreq.c | 1 - drivers/cpufreq/omap-cpufreq.c | 1 - drivers/cpufreq/pasemi-cpufreq.c | 1 - drivers/cpufreq/powernow-k6.c | 1 - drivers/cpufreq/powernow-k7.c | 2 -- drivers/cpufreq/powernow-k8.c | 2 -- drivers/cpufreq/ppc-corenet-cpufreq.c | 1 - drivers/cpufreq/sh-cpufreq.c | 1 - drivers/cpufreq/sparc-us2e-cpufreq.c | 4 +-- drivers/cpufreq/sparc-us3-cpufreq.c | 4 +-- drivers/cpufreq/speedstep-centrino.c | 2 -- drivers/cpufreq/tegra-cpufreq.c | 1 - include/linux/cpufreq.h | 6 +---- 19 files changed, 17 insertions(+), 67 deletions(-)
diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c index caf41eb..e0425b3 100644 --- a/drivers/cpufreq/acpi-cpufreq.c +++ b/drivers/cpufreq/acpi-cpufreq.c @@ -872,7 +872,6 @@ static int acpi_cpufreq_cpu_exit(struct cpufreq_policy *policy) pr_debug("acpi_cpufreq_cpu_exit\n");
if (data) { - cpufreq_frequency_table_put_attr(policy->cpu); per_cpu(acfreq_data, policy->cpu) = NULL; acpi_processor_unregister_performance(data->acpi_data, policy->cpu); diff --git a/drivers/cpufreq/arm_big_little.c b/drivers/cpufreq/arm_big_little.c index 5519933..9ef95c6 100644 --- a/drivers/cpufreq/arm_big_little.c +++ b/drivers/cpufreq/arm_big_little.c @@ -478,7 +478,6 @@ static int bL_cpufreq_exit(struct cpufreq_policy *policy) return -ENODEV; }
- cpufreq_frequency_table_put_attr(policy->cpu); put_cluster_clk_and_freq_table(cpu_dev); dev_dbg(cpu_dev, "%s: Exited, cpu: %d\n", __func__, policy->cpu);
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index ae4923e..e7586e6 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -193,6 +193,12 @@ unsigned int cpufreq_generic_get(unsigned int cpu) } EXPORT_SYMBOL_GPL(cpufreq_generic_get);
+/* Only for cpufreq core internal use */ +struct cpufreq_policy *cpufreq_cpu_get_raw(unsigned int cpu) +{ + return per_cpu(cpufreq_cpu_data, cpu); +} + struct cpufreq_policy *cpufreq_cpu_get(unsigned int cpu) { struct cpufreq_policy *policy = NULL; @@ -976,7 +982,6 @@ static void update_policy_cpu(struct cpufreq_policy *policy, unsigned int cpu)
up_write(&policy->rwsem);
- cpufreq_frequency_table_update_policy_cpu(policy); blocking_notifier_call_chain(&cpufreq_policy_notifier_list, CPUFREQ_UPDATE_POLICY_CPU, policy); } diff --git a/drivers/cpufreq/e_powersaver.c b/drivers/cpufreq/e_powersaver.c index 9012b8b..a0d2a42 100644 --- a/drivers/cpufreq/e_powersaver.c +++ b/drivers/cpufreq/e_powersaver.c @@ -382,7 +382,6 @@ static int eps_cpu_exit(struct cpufreq_policy *policy) unsigned int cpu = policy->cpu;
/* Bye */ - cpufreq_frequency_table_put_attr(policy->cpu); kfree(eps_cpu[cpu]); eps_cpu[cpu] = NULL; return 0; diff --git a/drivers/cpufreq/freq_table.c b/drivers/cpufreq/freq_table.c index 0d6cc0e..9231303 100644 --- a/drivers/cpufreq/freq_table.c +++ b/drivers/cpufreq/freq_table.c @@ -87,8 +87,8 @@ int cpufreq_frequency_table_verify(struct cpufreq_policy *policy, EXPORT_SYMBOL_GPL(cpufreq_frequency_table_verify);
/* - * Generic routine to verify policy & frequency table, requires driver to call - * cpufreq_frequency_table_get_attr() prior to it. + * Generic routine to verify policy & frequency table, requires driver to set + * policy->freq_table prior to it. */ int cpufreq_generic_frequency_table_verify(struct cpufreq_policy *policy) { @@ -201,23 +201,18 @@ int cpufreq_frequency_table_get_index(struct cpufreq_policy *policy, } EXPORT_SYMBOL_GPL(cpufreq_frequency_table_get_index);
-static DEFINE_PER_CPU(struct cpufreq_frequency_table *, cpufreq_show_table); - /** * show_available_freqs - show available frequencies for the specified CPU */ static ssize_t show_available_freqs(struct cpufreq_policy *policy, char *buf) { unsigned int i = 0; - unsigned int cpu = policy->cpu; ssize_t count = 0; - struct cpufreq_frequency_table *table; + struct cpufreq_frequency_table *table = policy->freq_table;
- if (!per_cpu(cpufreq_show_table, cpu)) + if (!table) return -ENODEV;
- table = per_cpu(cpufreq_show_table, cpu); - for (i = 0; (table[i].frequency != CPUFREQ_TABLE_END); i++) { if (table[i].frequency == CPUFREQ_ENTRY_INVALID) continue; @@ -243,49 +238,24 @@ struct freq_attr *cpufreq_generic_attr[] = { }; EXPORT_SYMBOL_GPL(cpufreq_generic_attr);
-/* - * if you use these, you must assure that the frequency table is valid - * all the time between get_attr and put_attr! - */ -void cpufreq_frequency_table_get_attr(struct cpufreq_frequency_table *table, - unsigned int cpu) -{ - pr_debug("setting show_table for cpu %u to %p\n", cpu, table); - per_cpu(cpufreq_show_table, cpu) = table; -} -EXPORT_SYMBOL_GPL(cpufreq_frequency_table_get_attr); - -void cpufreq_frequency_table_put_attr(unsigned int cpu) -{ - pr_debug("clearing show_table for cpu %u\n", cpu); - per_cpu(cpufreq_show_table, cpu) = NULL; -} -EXPORT_SYMBOL_GPL(cpufreq_frequency_table_put_attr); - int cpufreq_table_validate_and_show(struct cpufreq_policy *policy, struct cpufreq_frequency_table *table) { int ret = cpufreq_frequency_table_cpuinfo(policy, table);
if (!ret) - cpufreq_frequency_table_get_attr(table, policy->cpu); + policy->freq_table = table;
return ret; } EXPORT_SYMBOL_GPL(cpufreq_table_validate_and_show);
-void cpufreq_frequency_table_update_policy_cpu(struct cpufreq_policy *policy) -{ - pr_debug("Updating show_table for new_cpu %u from last_cpu %u\n", - policy->cpu, policy->last_cpu); - per_cpu(cpufreq_show_table, policy->cpu) = per_cpu(cpufreq_show_table, - policy->last_cpu); - per_cpu(cpufreq_show_table, policy->last_cpu) = NULL; -} +struct cpufreq_policy *cpufreq_cpu_get_raw(unsigned int cpu);
struct cpufreq_frequency_table *cpufreq_frequency_get_table(unsigned int cpu) { - return per_cpu(cpufreq_show_table, cpu); + struct cpufreq_policy *policy = cpufreq_cpu_get_raw(cpu); + return policy ? policy->freq_table : NULL; } EXPORT_SYMBOL_GPL(cpufreq_frequency_get_table);
diff --git a/drivers/cpufreq/ia64-acpi-cpufreq.c b/drivers/cpufreq/ia64-acpi-cpufreq.c index 53c6ac6..a22b5d1 100644 --- a/drivers/cpufreq/ia64-acpi-cpufreq.c +++ b/drivers/cpufreq/ia64-acpi-cpufreq.c @@ -332,7 +332,6 @@ acpi_cpufreq_cpu_exit ( pr_debug("acpi_cpufreq_cpu_exit\n");
if (data) { - cpufreq_frequency_table_put_attr(policy->cpu); acpi_io_data[policy->cpu] = NULL; acpi_processor_unregister_performance(&data->acpi_data, policy->cpu); diff --git a/drivers/cpufreq/loongson2_cpufreq.c b/drivers/cpufreq/loongson2_cpufreq.c index b6581ab..a3588d61 100644 --- a/drivers/cpufreq/loongson2_cpufreq.c +++ b/drivers/cpufreq/loongson2_cpufreq.c @@ -104,7 +104,6 @@ static int loongson2_cpufreq_cpu_init(struct cpufreq_policy *policy)
static int loongson2_cpufreq_exit(struct cpufreq_policy *policy) { - cpufreq_frequency_table_put_attr(policy->cpu); clk_put(policy->clk); return 0; } diff --git a/drivers/cpufreq/omap-cpufreq.c b/drivers/cpufreq/omap-cpufreq.c index adc60ec..7c577e3 100644 --- a/drivers/cpufreq/omap-cpufreq.c +++ b/drivers/cpufreq/omap-cpufreq.c @@ -143,7 +143,6 @@ fail:
static int omap_cpu_exit(struct cpufreq_policy *policy) { - cpufreq_frequency_table_put_attr(policy->cpu); freq_table_free(); clk_put(policy->clk); return 0; diff --git a/drivers/cpufreq/pasemi-cpufreq.c b/drivers/cpufreq/pasemi-cpufreq.c index 0426008..6a2b7d3 100644 --- a/drivers/cpufreq/pasemi-cpufreq.c +++ b/drivers/cpufreq/pasemi-cpufreq.c @@ -234,7 +234,6 @@ static int pas_cpufreq_cpu_exit(struct cpufreq_policy *policy) if (sdcpwr_mapbase) iounmap(sdcpwr_mapbase);
- cpufreq_frequency_table_put_attr(policy->cpu); return 0; }
diff --git a/drivers/cpufreq/powernow-k6.c b/drivers/cpufreq/powernow-k6.c index 643e795..5a36e53 100644 --- a/drivers/cpufreq/powernow-k6.c +++ b/drivers/cpufreq/powernow-k6.c @@ -138,7 +138,6 @@ static int powernow_k6_cpu_exit(struct cpufreq_policy *policy) if (i == max_multiplier) powernow_k6_target(policy, i); } - cpufreq_frequency_table_put_attr(policy->cpu); return 0; }
diff --git a/drivers/cpufreq/powernow-k7.c b/drivers/cpufreq/powernow-k7.c index 946708a..0e68e02 100644 --- a/drivers/cpufreq/powernow-k7.c +++ b/drivers/cpufreq/powernow-k7.c @@ -664,8 +664,6 @@ static int powernow_cpu_init(struct cpufreq_policy *policy)
static int powernow_cpu_exit(struct cpufreq_policy *policy) { - cpufreq_frequency_table_put_attr(policy->cpu); - #ifdef CONFIG_X86_POWERNOW_K7_ACPI if (acpi_processor_perf) { acpi_processor_unregister_performance(acpi_processor_perf, 0); diff --git a/drivers/cpufreq/powernow-k8.c b/drivers/cpufreq/powernow-k8.c index e10b646..eccea0e 100644 --- a/drivers/cpufreq/powernow-k8.c +++ b/drivers/cpufreq/powernow-k8.c @@ -1161,8 +1161,6 @@ static int powernowk8_cpu_exit(struct cpufreq_policy *pol)
powernow_k8_cpu_exit_acpi(data);
- cpufreq_frequency_table_put_attr(pol->cpu); - kfree(data->powernow_table); kfree(data); per_cpu(powernow_data, pol->cpu) = NULL; diff --git a/drivers/cpufreq/ppc-corenet-cpufreq.c b/drivers/cpufreq/ppc-corenet-cpufreq.c index 051000f..037949d 100644 --- a/drivers/cpufreq/ppc-corenet-cpufreq.c +++ b/drivers/cpufreq/ppc-corenet-cpufreq.c @@ -228,7 +228,6 @@ static int __exit corenet_cpufreq_cpu_exit(struct cpufreq_policy *policy) struct cpu_data *data = per_cpu(cpu_data, policy->cpu); unsigned int cpu;
- cpufreq_frequency_table_put_attr(policy->cpu); of_node_put(data->parent); kfree(data->table); kfree(data); diff --git a/drivers/cpufreq/sh-cpufreq.c b/drivers/cpufreq/sh-cpufreq.c index 387af12..696170e 100644 --- a/drivers/cpufreq/sh-cpufreq.c +++ b/drivers/cpufreq/sh-cpufreq.c @@ -143,7 +143,6 @@ static int sh_cpufreq_cpu_exit(struct cpufreq_policy *policy) unsigned int cpu = policy->cpu; struct clk *cpuclk = &per_cpu(sh_cpuclk, cpu);
- cpufreq_frequency_table_put_attr(cpu); clk_put(cpuclk);
return 0; diff --git a/drivers/cpufreq/sparc-us2e-cpufreq.c b/drivers/cpufreq/sparc-us2e-cpufreq.c index 62aa23e..b73feeb 100644 --- a/drivers/cpufreq/sparc-us2e-cpufreq.c +++ b/drivers/cpufreq/sparc-us2e-cpufreq.c @@ -301,10 +301,8 @@ static int __init us2e_freq_cpu_init(struct cpufreq_policy *policy)
static int us2e_freq_cpu_exit(struct cpufreq_policy *policy) { - if (cpufreq_us2e_driver) { - cpufreq_frequency_table_put_attr(policy->cpu); + if (cpufreq_us2e_driver) us2e_freq_target(policy, 0); - }
return 0; } diff --git a/drivers/cpufreq/sparc-us3-cpufreq.c b/drivers/cpufreq/sparc-us3-cpufreq.c index 724ffbd..9bb42ba 100644 --- a/drivers/cpufreq/sparc-us3-cpufreq.c +++ b/drivers/cpufreq/sparc-us3-cpufreq.c @@ -156,10 +156,8 @@ static int __init us3_freq_cpu_init(struct cpufreq_policy *policy)
static int us3_freq_cpu_exit(struct cpufreq_policy *policy) { - if (cpufreq_us3_driver) { - cpufreq_frequency_table_put_attr(policy->cpu); + if (cpufreq_us3_driver) us3_freq_target(policy, 0); - }
return 0; } diff --git a/drivers/cpufreq/speedstep-centrino.c b/drivers/cpufreq/speedstep-centrino.c index 4e1daca..6723f03 100644 --- a/drivers/cpufreq/speedstep-centrino.c +++ b/drivers/cpufreq/speedstep-centrino.c @@ -406,8 +406,6 @@ static int centrino_cpu_exit(struct cpufreq_policy *policy) if (!per_cpu(centrino_model, cpu)) return -ENODEV;
- cpufreq_frequency_table_put_attr(cpu); - per_cpu(centrino_model, cpu) = NULL;
return 0; diff --git a/drivers/cpufreq/tegra-cpufreq.c b/drivers/cpufreq/tegra-cpufreq.c index 9e4f0a2b..672b0b7 100644 --- a/drivers/cpufreq/tegra-cpufreq.c +++ b/drivers/cpufreq/tegra-cpufreq.c @@ -136,7 +136,6 @@ static int tegra_cpu_init(struct cpufreq_policy *policy)
static int tegra_cpu_exit(struct cpufreq_policy *policy) { - cpufreq_frequency_table_put_attr(policy->cpu); clk_disable_unprepare(cpu_clk); clk_disable_unprepare(emc_clk); return 0; diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index ce6f06f..a98b4d4 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -85,6 +85,7 @@ struct cpufreq_policy { * called, but you're in IRQ context */
struct cpufreq_real_policy user_policy; + struct cpufreq_frequency_table *freq_table;
struct list_head policy_list; struct kobject kobj; @@ -457,7 +458,6 @@ int cpufreq_frequency_table_target(struct cpufreq_policy *policy, int cpufreq_frequency_table_get_index(struct cpufreq_policy *policy, unsigned int freq);
-void cpufreq_frequency_table_update_policy_cpu(struct cpufreq_policy *policy); ssize_t cpufreq_show_cpus(const struct cpumask *mask, char *buf);
/* the following funtion is for cpufreq core use only */ @@ -466,9 +466,6 @@ struct cpufreq_frequency_table *cpufreq_frequency_get_table(unsigned int cpu); /* the following are really really optional */ extern struct freq_attr cpufreq_freq_attr_scaling_available_freqs; extern struct freq_attr *cpufreq_generic_attr[]; -void cpufreq_frequency_table_get_attr(struct cpufreq_frequency_table *table, - unsigned int cpu); -void cpufreq_frequency_table_put_attr(unsigned int cpu); int cpufreq_table_validate_and_show(struct cpufreq_policy *policy, struct cpufreq_frequency_table *table);
@@ -478,7 +475,6 @@ int cpufreq_generic_init(struct cpufreq_policy *policy, unsigned int transition_latency); static inline int cpufreq_generic_exit(struct cpufreq_policy *policy) { - cpufreq_frequency_table_put_attr(policy->cpu); return 0; }