diff options
author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-07 09:03:00 -0800 |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-07 09:03:00 -0800 |
commit | 7a8c6ad918e9c598bf3b799f1a0d5ee4dee59ca3 (patch) | |
tree | ce1ed4557f44560ba0db2713046edcb9a2a39094 /drivers | |
parent | 37969581301e50872a1ae84dc73962b5f7ee6b76 (diff) | |
parent | e19717fe2bb3624d8242f66d3825881d11a847dd (diff) |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq
* git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq:
[CPUFREQ] Add missing printk levels to e_powersaver
[CPUFREQ] Fix sparse warning in powernow-k8
[CPUFREQ] Support Model D parts and newer in e_powersaver
[CPUFREQ] Powernow-k8: Update to support the latest Turion processors
[CPUFREQ] fix configuration help message
[CPUFREQ] powernow-k8 print pstate instead of fid/did for family 10h
[CPUFREQ] Eliminate cpufreq_userspace scaling_setspeed deadlock
[CPUFREQ] gx-suspmod.c: use boot_cpu_data instead of current_cpu_data
[CPUFREQ] fix incorrect comment on show_available_freqs() in freq_table.c
[CPUFREQ] drivers/cpufreq: Add missing "space"
[CPUFREQ] arch/x86: Add missing "space"
[CPUFREQ] Remove pointless Kconfig dependancy
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/cpufreq/Kconfig | 3 | ||||
-rw-r--r-- | drivers/cpufreq/cpufreq.c | 33 | ||||
-rw-r--r-- | drivers/cpufreq/cpufreq_userspace.c | 40 | ||||
-rw-r--r-- | drivers/cpufreq/freq_table.c | 2 |
4 files changed, 38 insertions, 40 deletions
diff --git a/drivers/cpufreq/Kconfig b/drivers/cpufreq/Kconfig index 721f86f4f00..c159ae64eeb 100644 --- a/drivers/cpufreq/Kconfig +++ b/drivers/cpufreq/Kconfig @@ -9,9 +9,6 @@ config CPU_FREQ clock speed, you need to either enable a dynamic cpufreq governor (see below) after boot, or use a userspace tool. - To compile this driver as a module, choose M here: the - module will be called cpufreq. - For details, take a look at <file:Documentation/cpu-freq>. If in doubt, say N. diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index b730d670952..64926aa990d 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -287,7 +287,7 @@ static void adjust_jiffies(unsigned long val, struct cpufreq_freqs *ci) if (!l_p_j_ref_freq) { l_p_j_ref = loops_per_jiffy; l_p_j_ref_freq = ci->old; - dprintk("saving %lu as reference value for loops_per_jiffy;" + dprintk("saving %lu as reference value for loops_per_jiffy; " "freq is %u kHz\n", l_p_j_ref, l_p_j_ref_freq); } if ((val == CPUFREQ_PRECHANGE && ci->old < ci->new) || @@ -295,7 +295,7 @@ static void adjust_jiffies(unsigned long val, struct cpufreq_freqs *ci) (val == CPUFREQ_RESUMECHANGE || val == CPUFREQ_SUSPENDCHANGE)) { loops_per_jiffy = cpufreq_scale(l_p_j_ref, l_p_j_ref_freq, ci->new); - dprintk("scaling loops_per_jiffy to %lu" + dprintk("scaling loops_per_jiffy to %lu " "for frequency %u kHz\n", loops_per_jiffy, ci->new); } } @@ -601,6 +601,31 @@ static ssize_t show_affected_cpus (struct cpufreq_policy * policy, char *buf) return i; } +static ssize_t store_scaling_setspeed(struct cpufreq_policy *policy, + const char *buf, size_t count) +{ + unsigned int freq = 0; + unsigned int ret; + + if (!policy->governor->store_setspeed) + return -EINVAL; + + ret = sscanf(buf, "%u", &freq); + if (ret != 1) + return -EINVAL; + + policy->governor->store_setspeed(policy, freq); + + return count; +} + +static ssize_t show_scaling_setspeed(struct cpufreq_policy *policy, char *buf) +{ + if (!policy->governor->show_setspeed) + return sprintf(buf, "<unsupported>\n"); + + return policy->governor->show_setspeed(policy, buf); +} #define define_one_ro(_name) \ static struct freq_attr _name = \ @@ -624,6 +649,7 @@ define_one_ro(affected_cpus); define_one_rw(scaling_min_freq); define_one_rw(scaling_max_freq); define_one_rw(scaling_governor); +define_one_rw(scaling_setspeed); static struct attribute * default_attrs[] = { &cpuinfo_min_freq.attr, @@ -634,6 +660,7 @@ static struct attribute * default_attrs[] = { &scaling_governor.attr, &scaling_driver.attr, &scaling_available_governors.attr, + &scaling_setspeed.attr, NULL }; @@ -1313,7 +1340,7 @@ static int cpufreq_resume(struct sys_device * sysdev) struct cpufreq_freqs freqs; if (!(cpufreq_driver->flags & CPUFREQ_PM_NO_WARN)) - dprintk("Warning: CPU frequency" + dprintk("Warning: CPU frequency " "is %u, cpufreq assumed %u kHz.\n", cur_freq, cpu_policy->cur); diff --git a/drivers/cpufreq/cpufreq_userspace.c b/drivers/cpufreq/cpufreq_userspace.c index f8cdde4bf6c..cb2ac01a41a 100644 --- a/drivers/cpufreq/cpufreq_userspace.c +++ b/drivers/cpufreq/cpufreq_userspace.c @@ -65,12 +65,12 @@ static struct notifier_block userspace_cpufreq_notifier_block = { /** * cpufreq_set - set the CPU frequency + * @policy: pointer to policy struct where freq is being set * @freq: target frequency in kHz - * @cpu: CPU for which the frequency is to be set * * Sets the CPU frequency to freq. */ -static int cpufreq_set(unsigned int freq, struct cpufreq_policy *policy) +static int cpufreq_set(struct cpufreq_policy *policy, unsigned int freq) { int ret = -EINVAL; @@ -102,34 +102,11 @@ static int cpufreq_set(unsigned int freq, struct cpufreq_policy *policy) } -/************************** sysfs interface ************************/ -static ssize_t show_speed (struct cpufreq_policy *policy, char *buf) +static ssize_t show_speed(struct cpufreq_policy *policy, char *buf) { - return sprintf (buf, "%u\n", cpu_cur_freq[policy->cpu]); + return sprintf(buf, "%u\n", cpu_cur_freq[policy->cpu]); } -static ssize_t -store_speed (struct cpufreq_policy *policy, const char *buf, size_t count) -{ - unsigned int freq = 0; - unsigned int ret; - - ret = sscanf (buf, "%u", &freq); - if (ret != 1) - return -EINVAL; - - cpufreq_set(freq, policy); - - return count; -} - -static struct freq_attr freq_attr_scaling_setspeed = -{ - .attr = { .name = "scaling_setspeed", .mode = 0644 }, - .show = show_speed, - .store = store_speed, -}; - static int cpufreq_governor_userspace(struct cpufreq_policy *policy, unsigned int event) { @@ -142,10 +119,6 @@ static int cpufreq_governor_userspace(struct cpufreq_policy *policy, return -EINVAL; BUG_ON(!policy->cur); mutex_lock(&userspace_mutex); - rc = sysfs_create_file (&policy->kobj, - &freq_attr_scaling_setspeed.attr); - if (rc) - goto start_out; if (cpus_using_userspace_governor == 0) { cpufreq_register_notifier( @@ -160,7 +133,7 @@ static int cpufreq_governor_userspace(struct cpufreq_policy *policy, cpu_cur_freq[cpu] = policy->cur; cpu_set_freq[cpu] = policy->cur; dprintk("managing cpu %u started (%u - %u kHz, currently %u kHz)\n", cpu, cpu_min_freq[cpu], cpu_max_freq[cpu], cpu_cur_freq[cpu]); -start_out: + mutex_unlock(&userspace_mutex); break; case CPUFREQ_GOV_STOP: @@ -176,7 +149,6 @@ start_out: cpu_min_freq[cpu] = 0; cpu_max_freq[cpu] = 0; cpu_set_freq[cpu] = 0; - sysfs_remove_file (&policy->kobj, &freq_attr_scaling_setspeed.attr); dprintk("managing cpu %u stopped\n", cpu); mutex_unlock(&userspace_mutex); break; @@ -211,6 +183,8 @@ start_out: struct cpufreq_governor cpufreq_gov_userspace = { .name = "userspace", .governor = cpufreq_governor_userspace, + .store_setspeed = cpufreq_set, + .show_setspeed = show_speed, .owner = THIS_MODULE, }; EXPORT_SYMBOL(cpufreq_gov_userspace); diff --git a/drivers/cpufreq/freq_table.c b/drivers/cpufreq/freq_table.c index 5409f3afb3f..ae6cd60d5c1 100644 --- a/drivers/cpufreq/freq_table.c +++ b/drivers/cpufreq/freq_table.c @@ -171,7 +171,7 @@ EXPORT_SYMBOL_GPL(cpufreq_frequency_table_target); static struct cpufreq_frequency_table *show_table[NR_CPUS]; /** - * show_scaling_governor - show the current policy for the specified CPU + * show_available_freqs - show available frequencies for the specified CPU */ static ssize_t show_available_freqs (struct cpufreq_policy *policy, char *buf) { |