Here are few minor cleanups for cpufreq core and drivers. The first two removes per-cpu cpufreq_show_table variable and moves that information in struct cpufreq_policy. And the last one removes unnecessary frozen variable/parameters.
Just rebased over latest bleeding-edge branch and resent.
Viresh Kumar (3): cpufreq: add 'freq_table' in struct cpufreq_policy cpufreq: Remove cpufreq_generic_exit() cpufreq: Remove unnecessary variable/parameter 'frozen'
drivers/cpufreq/acpi-cpufreq.c | 1 - drivers/cpufreq/arm_big_little.c | 1 - drivers/cpufreq/blackfin-cpufreq.c | 1 - drivers/cpufreq/cpufreq-cpu0.c | 1 - drivers/cpufreq/cpufreq.c | 58 ++++++++++++++++------------------ drivers/cpufreq/cris-artpec3-cpufreq.c | 1 - drivers/cpufreq/cris-etraxfs-cpufreq.c | 1 - drivers/cpufreq/davinci-cpufreq.c | 1 - drivers/cpufreq/e_powersaver.c | 1 - drivers/cpufreq/elanfreq.c | 1 - drivers/cpufreq/exynos-cpufreq.c | 1 - drivers/cpufreq/exynos5440-cpufreq.c | 1 - drivers/cpufreq/freq_table.c | 46 +++++---------------------- drivers/cpufreq/ia64-acpi-cpufreq.c | 1 - drivers/cpufreq/imx6q-cpufreq.c | 1 - drivers/cpufreq/kirkwood-cpufreq.c | 1 - drivers/cpufreq/longhaul.c | 1 - drivers/cpufreq/loongson2_cpufreq.c | 1 - drivers/cpufreq/omap-cpufreq.c | 1 - drivers/cpufreq/p4-clockmod.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/ppc_cbe_cpufreq.c | 1 - drivers/cpufreq/pxa2xx-cpufreq.c | 1 - drivers/cpufreq/pxa3xx-cpufreq.c | 1 - drivers/cpufreq/sc520_freq.c | 1 - drivers/cpufreq/sh-cpufreq.c | 1 - drivers/cpufreq/sparc-us2e-cpufreq.c | 4 +-- drivers/cpufreq/sparc-us3-cpufreq.c | 4 +-- drivers/cpufreq/spear-cpufreq.c | 1 - drivers/cpufreq/speedstep-centrino.c | 2 -- drivers/cpufreq/speedstep-ich.c | 1 - drivers/cpufreq/speedstep-smi.c | 1 - drivers/cpufreq/tegra-cpufreq.c | 1 - include/linux/cpufreq.h | 11 +------ 38 files changed, 39 insertions(+), 120 deletions(-)
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 18448a7..822ca03 100644 --- a/drivers/cpufreq/acpi-cpufreq.c +++ b/drivers/cpufreq/acpi-cpufreq.c @@ -855,7 +855,6 @@ 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 72f87e9..3d87078 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 61dd72b..aae9dc1 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -191,6 +191,12 @@ 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; @@ -1032,7 +1038,6 @@ 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 8e54f97..65a4770 100644 --- a/drivers/cpufreq/freq_table.c +++ b/drivers/cpufreq/freq_table.c @@ -91,8 +91,8 @@ 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) { @@ -203,8 +203,6 @@ 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 */ @@ -212,15 +210,12 @@ static ssize_t show_available_freqs(struct cpufreq_policy *policy, char *buf, bool show_boost) { 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; @@ -283,49 +278,24 @@ 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 590f5b6..5f69c9a 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 b9a444e..ce27e6c 100644 --- a/drivers/cpufreq/powernow-k6.c +++ b/drivers/cpufreq/powernow-k6.c @@ -231,7 +231,6 @@ 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 6684e03..27eb2be 100644 --- a/drivers/cpufreq/powernow-k8.c +++ b/drivers/cpufreq/powernow-k8.c @@ -1164,8 +1164,6 @@ 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); for_each_cpu(cpu, pol->cpus) 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 bcfed77..63f0059 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 325bab0..7934135 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; @@ -474,7 +475,6 @@ 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);
#ifdef CONFIG_CPU_FREQ @@ -501,9 +501,6 @@ 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);
@@ -513,7 +510,6 @@ 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; }
cpufreq_generic_exit() is empty now and so can be deleted.
Signed-off-by: Viresh Kumar viresh.kumar@linaro.org --- drivers/cpufreq/blackfin-cpufreq.c | 1 - drivers/cpufreq/cpufreq-cpu0.c | 1 - drivers/cpufreq/cris-artpec3-cpufreq.c | 1 - drivers/cpufreq/cris-etraxfs-cpufreq.c | 1 - drivers/cpufreq/davinci-cpufreq.c | 1 - drivers/cpufreq/elanfreq.c | 1 - drivers/cpufreq/exynos-cpufreq.c | 1 - drivers/cpufreq/exynos5440-cpufreq.c | 1 - drivers/cpufreq/imx6q-cpufreq.c | 1 - drivers/cpufreq/kirkwood-cpufreq.c | 1 - drivers/cpufreq/longhaul.c | 1 - drivers/cpufreq/p4-clockmod.c | 1 - drivers/cpufreq/ppc_cbe_cpufreq.c | 1 - drivers/cpufreq/pxa2xx-cpufreq.c | 1 - drivers/cpufreq/pxa3xx-cpufreq.c | 1 - drivers/cpufreq/sc520_freq.c | 1 - drivers/cpufreq/spear-cpufreq.c | 1 - drivers/cpufreq/speedstep-ich.c | 1 - drivers/cpufreq/speedstep-smi.c | 1 - include/linux/cpufreq.h | 5 ----- 20 files changed, 24 deletions(-)
diff --git a/drivers/cpufreq/blackfin-cpufreq.c b/drivers/cpufreq/blackfin-cpufreq.c index e9e63fc..a9f8e5b 100644 --- a/drivers/cpufreq/blackfin-cpufreq.c +++ b/drivers/cpufreq/blackfin-cpufreq.c @@ -195,7 +195,6 @@ static struct cpufreq_driver bfin_driver = { .target_index = bfin_target, .get = bfin_getfreq_khz, .init = __bfin_cpu_init, - .exit = cpufreq_generic_exit, .name = "bfin cpufreq", .attr = cpufreq_generic_attr, }; diff --git a/drivers/cpufreq/cpufreq-cpu0.c b/drivers/cpufreq/cpufreq-cpu0.c index 0c12ffc..1bf6bba 100644 --- a/drivers/cpufreq/cpufreq-cpu0.c +++ b/drivers/cpufreq/cpufreq-cpu0.c @@ -109,7 +109,6 @@ static struct cpufreq_driver cpu0_cpufreq_driver = { .target_index = cpu0_set_target, .get = cpufreq_generic_get, .init = cpu0_cpufreq_init, - .exit = cpufreq_generic_exit, .name = "generic_cpu0", .attr = cpufreq_generic_attr, }; diff --git a/drivers/cpufreq/cris-artpec3-cpufreq.c b/drivers/cpufreq/cris-artpec3-cpufreq.c index 8655904..d457303 100644 --- a/drivers/cpufreq/cris-artpec3-cpufreq.c +++ b/drivers/cpufreq/cris-artpec3-cpufreq.c @@ -57,7 +57,6 @@ static struct cpufreq_driver cris_freq_driver = { .verify = cpufreq_generic_frequency_table_verify, .target_index = cris_freq_target, .init = cris_freq_cpu_init, - .exit = cpufreq_generic_exit, .name = "cris_freq", .attr = cpufreq_generic_attr, }; diff --git a/drivers/cpufreq/cris-etraxfs-cpufreq.c b/drivers/cpufreq/cris-etraxfs-cpufreq.c index 26d940d..13c3361 100644 --- a/drivers/cpufreq/cris-etraxfs-cpufreq.c +++ b/drivers/cpufreq/cris-etraxfs-cpufreq.c @@ -57,7 +57,6 @@ static struct cpufreq_driver cris_freq_driver = { .verify = cpufreq_generic_frequency_table_verify, .target_index = cris_freq_target, .init = cris_freq_cpu_init, - .exit = cpufreq_generic_exit, .name = "cris_freq", .attr = cpufreq_generic_attr, }; diff --git a/drivers/cpufreq/davinci-cpufreq.c b/drivers/cpufreq/davinci-cpufreq.c index 2cf3384..28a16dc 100644 --- a/drivers/cpufreq/davinci-cpufreq.c +++ b/drivers/cpufreq/davinci-cpufreq.c @@ -125,7 +125,6 @@ static struct cpufreq_driver davinci_driver = { .target_index = davinci_target, .get = cpufreq_generic_get, .init = davinci_cpu_init, - .exit = cpufreq_generic_exit, .name = "davinci", .attr = cpufreq_generic_attr, }; diff --git a/drivers/cpufreq/elanfreq.c b/drivers/cpufreq/elanfreq.c index de08acf..c987e94 100644 --- a/drivers/cpufreq/elanfreq.c +++ b/drivers/cpufreq/elanfreq.c @@ -198,7 +198,6 @@ static struct cpufreq_driver elanfreq_driver = { .verify = cpufreq_generic_frequency_table_verify, .target_index = elanfreq_target, .init = elanfreq_cpu_init, - .exit = cpufreq_generic_exit, .name = "elanfreq", .attr = cpufreq_generic_attr, }; diff --git a/drivers/cpufreq/exynos-cpufreq.c b/drivers/cpufreq/exynos-cpufreq.c index 307f02e..f99cfe2 100644 --- a/drivers/cpufreq/exynos-cpufreq.c +++ b/drivers/cpufreq/exynos-cpufreq.c @@ -145,7 +145,6 @@ static struct cpufreq_driver exynos_driver = { .target_index = exynos_target, .get = cpufreq_generic_get, .init = exynos_cpufreq_cpu_init, - .exit = cpufreq_generic_exit, .name = "exynos_cpufreq", .attr = cpufreq_generic_attr, #ifdef CONFIG_ARM_EXYNOS_CPU_FREQ_BOOST_SW diff --git a/drivers/cpufreq/exynos5440-cpufreq.c b/drivers/cpufreq/exynos5440-cpufreq.c index 49b75601..7f776aa 100644 --- a/drivers/cpufreq/exynos5440-cpufreq.c +++ b/drivers/cpufreq/exynos5440-cpufreq.c @@ -312,7 +312,6 @@ static struct cpufreq_driver exynos_driver = { .target_index = exynos_target, .get = cpufreq_generic_get, .init = exynos_cpufreq_cpu_init, - .exit = cpufreq_generic_exit, .name = CPUFREQ_NAME, .attr = cpufreq_generic_attr, }; diff --git a/drivers/cpufreq/imx6q-cpufreq.c b/drivers/cpufreq/imx6q-cpufreq.c index ce69059..e27fca8 100644 --- a/drivers/cpufreq/imx6q-cpufreq.c +++ b/drivers/cpufreq/imx6q-cpufreq.c @@ -144,7 +144,6 @@ static struct cpufreq_driver imx6q_cpufreq_driver = { .target_index = imx6q_set_target, .get = cpufreq_generic_get, .init = imx6q_cpufreq_init, - .exit = cpufreq_generic_exit, .name = "imx6q-cpufreq", .attr = cpufreq_generic_attr, }; diff --git a/drivers/cpufreq/kirkwood-cpufreq.c b/drivers/cpufreq/kirkwood-cpufreq.c index eb7abe3..3d114bc 100644 --- a/drivers/cpufreq/kirkwood-cpufreq.c +++ b/drivers/cpufreq/kirkwood-cpufreq.c @@ -102,7 +102,6 @@ static struct cpufreq_driver kirkwood_cpufreq_driver = { .verify = cpufreq_generic_frequency_table_verify, .target_index = kirkwood_cpufreq_target, .init = kirkwood_cpufreq_cpu_init, - .exit = cpufreq_generic_exit, .name = "kirkwood-cpufreq", .attr = cpufreq_generic_attr, }; diff --git a/drivers/cpufreq/longhaul.c b/drivers/cpufreq/longhaul.c index 45bafdd..7b94da3 100644 --- a/drivers/cpufreq/longhaul.c +++ b/drivers/cpufreq/longhaul.c @@ -913,7 +913,6 @@ static struct cpufreq_driver longhaul_driver = { .target_index = longhaul_target, .get = longhaul_get, .init = longhaul_cpu_init, - .exit = cpufreq_generic_exit, .name = "longhaul", .attr = cpufreq_generic_attr, }; diff --git a/drivers/cpufreq/p4-clockmod.c b/drivers/cpufreq/p4-clockmod.c index 3d1cba9..74f593e 100644 --- a/drivers/cpufreq/p4-clockmod.c +++ b/drivers/cpufreq/p4-clockmod.c @@ -237,7 +237,6 @@ static struct cpufreq_driver p4clockmod_driver = { .verify = cpufreq_generic_frequency_table_verify, .target_index = cpufreq_p4_target, .init = cpufreq_p4_cpu_init, - .exit = cpufreq_generic_exit, .get = cpufreq_p4_get, .name = "p4-clockmod", .attr = cpufreq_generic_attr, diff --git a/drivers/cpufreq/ppc_cbe_cpufreq.c b/drivers/cpufreq/ppc_cbe_cpufreq.c index e42ca9c..af7b1ca 100644 --- a/drivers/cpufreq/ppc_cbe_cpufreq.c +++ b/drivers/cpufreq/ppc_cbe_cpufreq.c @@ -141,7 +141,6 @@ static struct cpufreq_driver cbe_cpufreq_driver = { .verify = cpufreq_generic_frequency_table_verify, .target_index = cbe_cpufreq_target, .init = cbe_cpufreq_cpu_init, - .exit = cpufreq_generic_exit, .name = "cbe-cpufreq", .flags = CPUFREQ_CONST_LOOPS, }; diff --git a/drivers/cpufreq/pxa2xx-cpufreq.c b/drivers/cpufreq/pxa2xx-cpufreq.c index a9195a8..e24269a 100644 --- a/drivers/cpufreq/pxa2xx-cpufreq.c +++ b/drivers/cpufreq/pxa2xx-cpufreq.c @@ -427,7 +427,6 @@ static struct cpufreq_driver pxa_cpufreq_driver = { .verify = cpufreq_generic_frequency_table_verify, .target_index = pxa_set_target, .init = pxa_cpufreq_init, - .exit = cpufreq_generic_exit, .get = pxa_cpufreq_get, .name = "PXA2xx", }; diff --git a/drivers/cpufreq/pxa3xx-cpufreq.c b/drivers/cpufreq/pxa3xx-cpufreq.c index 3785687..a012759 100644 --- a/drivers/cpufreq/pxa3xx-cpufreq.c +++ b/drivers/cpufreq/pxa3xx-cpufreq.c @@ -205,7 +205,6 @@ static struct cpufreq_driver pxa3xx_cpufreq_driver = { .verify = cpufreq_generic_frequency_table_verify, .target_index = pxa3xx_cpufreq_set, .init = pxa3xx_cpufreq_init, - .exit = cpufreq_generic_exit, .get = pxa3xx_cpufreq_get, .name = "pxa3xx-cpufreq", }; diff --git a/drivers/cpufreq/sc520_freq.c b/drivers/cpufreq/sc520_freq.c index 6adb354..69371bf 100644 --- a/drivers/cpufreq/sc520_freq.c +++ b/drivers/cpufreq/sc520_freq.c @@ -93,7 +93,6 @@ static struct cpufreq_driver sc520_freq_driver = { .verify = cpufreq_generic_frequency_table_verify, .target_index = sc520_freq_target, .init = sc520_freq_cpu_init, - .exit = cpufreq_generic_exit, .name = "sc520_freq", .attr = cpufreq_generic_attr, }; diff --git a/drivers/cpufreq/spear-cpufreq.c b/drivers/cpufreq/spear-cpufreq.c index 5c86e3f..410b54a 100644 --- a/drivers/cpufreq/spear-cpufreq.c +++ b/drivers/cpufreq/spear-cpufreq.c @@ -163,7 +163,6 @@ static struct cpufreq_driver spear_cpufreq_driver = { .target_index = spear_cpufreq_target, .get = cpufreq_generic_get, .init = spear_cpufreq_init, - .exit = cpufreq_generic_exit, .attr = cpufreq_generic_attr, };
diff --git a/drivers/cpufreq/speedstep-ich.c b/drivers/cpufreq/speedstep-ich.c index 7639b2b..394ac15 100644 --- a/drivers/cpufreq/speedstep-ich.c +++ b/drivers/cpufreq/speedstep-ich.c @@ -311,7 +311,6 @@ static struct cpufreq_driver speedstep_driver = { .verify = cpufreq_generic_frequency_table_verify, .target_index = speedstep_target, .init = speedstep_cpu_init, - .exit = cpufreq_generic_exit, .get = speedstep_get, .attr = cpufreq_generic_attr, }; diff --git a/drivers/cpufreq/speedstep-smi.c b/drivers/cpufreq/speedstep-smi.c index 998c17b..db5d274 100644 --- a/drivers/cpufreq/speedstep-smi.c +++ b/drivers/cpufreq/speedstep-smi.c @@ -280,7 +280,6 @@ static struct cpufreq_driver speedstep_driver = { .verify = cpufreq_generic_frequency_table_verify, .target_index = speedstep_target, .init = speedstep_cpu_init, - .exit = cpufreq_generic_exit, .get = speedstep_get, .resume = speedstep_resume, .attr = cpufreq_generic_attr, diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index 7934135..31c431e 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -508,9 +508,4 @@ unsigned int cpufreq_generic_get(unsigned int cpu); int cpufreq_generic_init(struct cpufreq_policy *policy, struct cpufreq_frequency_table *table, unsigned int transition_latency); -static inline int cpufreq_generic_exit(struct cpufreq_policy *policy) -{ - return 0; -} - #endif /* _LINUX_CPUFREQ_H */
We have used 'frozen' variable/function parameter at many places to differentiate CPU hotplugging on suspend/resume vs sysfs removals. We now have another variable cpufreq_suspended which can be used in these cases and hence we can get rid of all those variables or function parameters.
Signed-off-by: Viresh Kumar viresh.kumar@linaro.org --- drivers/cpufreq/cpufreq.c | 51 ++++++++++++++++++++--------------------------- 1 file changed, 22 insertions(+), 29 deletions(-)
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index aae9dc1..53f5d0b6 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -1042,13 +1042,13 @@ static void update_policy_cpu(struct cpufreq_policy *policy, unsigned int cpu) CPUFREQ_UPDATE_POLICY_CPU, policy); }
-static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif, - bool frozen) +static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif) { unsigned int j, cpu = dev->id; int ret = -ENOMEM; struct cpufreq_policy *policy; unsigned long flags; + bool recover_policy = cpufreq_suspended; #ifdef CONFIG_HOTPLUG_CPU struct cpufreq_policy *tpolicy; #endif @@ -1089,9 +1089,9 @@ static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif, * Restore the saved policy when doing light-weight init and fall back * to the full init if that fails. */ - policy = frozen ? cpufreq_policy_restore(cpu) : NULL; + policy = recover_policy ? cpufreq_policy_restore(cpu) : NULL; if (!policy) { - frozen = false; + recover_policy = false; policy = cpufreq_policy_alloc(); if (!policy) goto nomem_out; @@ -1103,7 +1103,7 @@ static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif, * the creation of a brand new one. So we need to perform this update * by invoking update_policy_cpu(). */ - if (frozen && cpu != policy->cpu) + if (recover_policy && cpu != policy->cpu) update_policy_cpu(policy, cpu); else policy->cpu = cpu; @@ -1131,7 +1131,7 @@ static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif, */ cpumask_and(policy->cpus, policy->cpus, cpu_online_mask);
- if (!frozen) { + if (!recover_policy) { policy->user_policy.min = policy->min; policy->user_policy.max = policy->max; } @@ -1193,7 +1193,7 @@ static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif, blocking_notifier_call_chain(&cpufreq_policy_notifier_list, CPUFREQ_START, policy);
- if (!frozen) { + if (!recover_policy) { ret = cpufreq_add_dev_interface(policy, dev); if (ret) goto err_out_unregister; @@ -1207,7 +1207,7 @@ static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif,
cpufreq_init_policy(policy);
- if (!frozen) { + if (!recover_policy) { policy->user_policy.policy = policy->policy; policy->user_policy.governor = policy->governor; } @@ -1230,7 +1230,7 @@ err_get_freq: if (cpufreq_driver->exit) cpufreq_driver->exit(policy); err_set_policy_cpu: - if (frozen) { + if (recover_policy) { /* Do not leave stale fallback data behind. */ per_cpu(cpufreq_cpu_data_fallback, cpu) = NULL; cpufreq_policy_put_kobj(policy); @@ -1254,7 +1254,7 @@ nomem_out: */ static int cpufreq_add_dev(struct device *dev, struct subsys_interface *sif) { - return __cpufreq_add_dev(dev, sif, false); + return __cpufreq_add_dev(dev, sif); }
static int cpufreq_nominate_new_policy_cpu(struct cpufreq_policy *policy, @@ -1285,8 +1285,7 @@ static int cpufreq_nominate_new_policy_cpu(struct cpufreq_policy *policy, }
static int __cpufreq_remove_dev_prepare(struct device *dev, - struct subsys_interface *sif, - bool frozen) + struct subsys_interface *sif) { unsigned int cpu = dev->id, cpus; int new_cpu, ret; @@ -1300,7 +1299,7 @@ static int __cpufreq_remove_dev_prepare(struct device *dev, policy = per_cpu(cpufreq_cpu_data, cpu);
/* Save the policy somewhere when doing a light-weight tear-down */ - if (frozen) + if (cpufreq_suspended) per_cpu(cpufreq_cpu_data_fallback, cpu) = policy;
write_unlock_irqrestore(&cpufreq_driver_lock, flags); @@ -1333,7 +1332,7 @@ static int __cpufreq_remove_dev_prepare(struct device *dev, if (new_cpu >= 0) { update_policy_cpu(policy, new_cpu);
- if (!frozen) { + if (!cpufreq_suspended) { pr_debug("%s: policy Kobject moved to cpu: %d from: %d\n", __func__, new_cpu, cpu); } @@ -1344,8 +1343,7 @@ static int __cpufreq_remove_dev_prepare(struct device *dev, }
static int __cpufreq_remove_dev_finish(struct device *dev, - struct subsys_interface *sif, - bool frozen) + struct subsys_interface *sif) { unsigned int cpu = dev->id, cpus; int ret; @@ -1380,7 +1378,7 @@ static int __cpufreq_remove_dev_finish(struct device *dev, } }
- if (!frozen) + if (!cpufreq_suspended) cpufreq_policy_put_kobj(policy);
/* @@ -1396,7 +1394,7 @@ static int __cpufreq_remove_dev_finish(struct device *dev, list_del(&policy->policy_list); write_unlock_irqrestore(&cpufreq_driver_lock, flags);
- if (!frozen) + if (!cpufreq_suspended) cpufreq_policy_free(policy); } else { if (has_target()) { @@ -1426,10 +1424,10 @@ static int cpufreq_remove_dev(struct device *dev, struct subsys_interface *sif) if (cpu_is_offline(cpu)) return 0;
- ret = __cpufreq_remove_dev_prepare(dev, sif, false); + ret = __cpufreq_remove_dev_prepare(dev, sif);
if (!ret) - ret = __cpufreq_remove_dev_finish(dev, sif, false); + ret = __cpufreq_remove_dev_finish(dev, sif);
return ret; } @@ -2187,29 +2185,24 @@ static int cpufreq_cpu_callback(struct notifier_block *nfb, { unsigned int cpu = (unsigned long)hcpu; struct device *dev; - bool frozen = false;
dev = get_cpu_device(cpu); if (dev) { - - if (action & CPU_TASKS_FROZEN) - frozen = true; - switch (action & ~CPU_TASKS_FROZEN) { case CPU_ONLINE: - __cpufreq_add_dev(dev, NULL, frozen); + __cpufreq_add_dev(dev, NULL); break;
case CPU_DOWN_PREPARE: - __cpufreq_remove_dev_prepare(dev, NULL, frozen); + __cpufreq_remove_dev_prepare(dev, NULL); break;
case CPU_POST_DEAD: - __cpufreq_remove_dev_finish(dev, NULL, frozen); + __cpufreq_remove_dev_finish(dev, NULL); break;
case CPU_DOWN_FAILED: - __cpufreq_add_dev(dev, NULL, frozen); + __cpufreq_add_dev(dev, NULL); break; } }
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