diff options
| author | Len Brown <len.brown@intel.com> | 2006-06-15 21:31:47 -0400 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2006-06-15 21:31:47 -0400 |
| commit | c080a3e69dfb58ae9b8c7e70a1e33f4f4e493ea7 (patch) | |
| tree | 849d913226a6d38b66bf5ad1ccf6ea07559009af /drivers/acpi/processor_perflib.c | |
| parent | bf891bd65de65284f3964216fcde493dba5149db (diff) | |
| parent | 36e430951af0b0d1bdfd50ce22e70079d02646df (diff) | |
| download | lwn-c080a3e69dfb58ae9b8c7e70a1e33f4f4e493ea7.tar.gz lwn-c080a3e69dfb58ae9b8c7e70a1e33f4f4e493ea7.zip | |
Pull sem2mutex into release branch
Diffstat (limited to 'drivers/acpi/processor_perflib.c')
| -rw-r--r-- | drivers/acpi/processor_perflib.c | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c index f36db22ce1ae..44a7b168e0ec 100644 --- a/drivers/acpi/processor_perflib.c +++ b/drivers/acpi/processor_perflib.c @@ -34,6 +34,7 @@ #ifdef CONFIG_X86_ACPI_CPUFREQ_PROC_INTF #include <linux/proc_fs.h> #include <linux/seq_file.h> +#include <linux/mutex.h> #include <asm/uaccess.h> #endif @@ -48,7 +49,7 @@ #define _COMPONENT ACPI_PROCESSOR_COMPONENT ACPI_MODULE_NAME("acpi_processor") -static DECLARE_MUTEX(performance_sem); +static DEFINE_MUTEX(performance_mutex); /* * _PPC support is implemented as a CPUfreq policy notifier: @@ -72,7 +73,7 @@ static int acpi_processor_ppc_notifier(struct notifier_block *nb, struct acpi_processor *pr; unsigned int ppc = 0; - down(&performance_sem); + mutex_lock(&performance_mutex); if (event != CPUFREQ_INCOMPATIBLE) goto out; @@ -93,7 +94,7 @@ static int acpi_processor_ppc_notifier(struct notifier_block *nb, core_frequency * 1000); out: - up(&performance_sem); + mutex_unlock(&performance_mutex); return 0; } @@ -564,16 +565,16 @@ acpi_processor_register_performance(struct acpi_processor_performance if (!(acpi_processor_ppc_status & PPC_REGISTERED)) return_VALUE(-EINVAL); - down(&performance_sem); + mutex_lock(&performance_mutex); pr = processors[cpu]; if (!pr) { - up(&performance_sem); + mutex_unlock(&performance_mutex); return_VALUE(-ENODEV); } if (pr->performance) { - up(&performance_sem); + mutex_unlock(&performance_mutex); return_VALUE(-EBUSY); } @@ -583,13 +584,13 @@ acpi_processor_register_performance(struct acpi_processor_performance if (acpi_processor_get_performance_info(pr)) { pr->performance = NULL; - up(&performance_sem); + mutex_unlock(&performance_mutex); return_VALUE(-EIO); } acpi_cpufreq_add_file(pr); - up(&performance_sem); + mutex_unlock(&performance_mutex); return_VALUE(0); } @@ -603,11 +604,11 @@ acpi_processor_unregister_performance(struct acpi_processor_performance ACPI_FUNCTION_TRACE("acpi_processor_unregister_performance"); - down(&performance_sem); + mutex_lock(&performance_mutex); pr = processors[cpu]; if (!pr) { - up(&performance_sem); + mutex_unlock(&performance_mutex); return_VOID; } @@ -617,7 +618,7 @@ acpi_processor_unregister_performance(struct acpi_processor_performance acpi_cpufreq_remove_file(pr); - up(&performance_sem); + mutex_unlock(&performance_mutex); return_VOID; } |