diff options
| author | Peter Boonstoppel <pboonstoppel@nvidia.com> | 2012-09-11 17:03:06 -0700 |
|---|---|---|
| committer | Dan Willemsen <dwillemsen@nvidia.com> | 2013-09-14 12:34:31 -0700 |
| commit | 40b221b3888f8d609e7a04f0046faa37ed74f64c (patch) | |
| tree | d7417412a8a281182e0bd6d66c6aca6ccc312553 /arch/arm/mach-tegra | |
| parent | c35e624badfa1dd61b8cc1d958d72b20a1c69362 (diff) | |
ARM: tegra: cpuquiet: add min/max_cpus debugfs nodes back
Bug 1047573
Change-Id: I7209ca87075b3d8a1d53141c48fe8fbdd86c4728
Signed-off-by: Peter Boonstoppel <pboonstoppel@nvidia.com>
Reviewed-on: http://git-master/r/131606
Reviewed-by: Automatic_Commit_Validation_User
Tested-by: Ilan Aelion <iaelion@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Diwakar Tundlam <dtundlam@nvidia.com>
Rebase-Id: R81f2ceacae7865e1941c3eb7fb3950a9a0195f5c
Diffstat (limited to 'arch/arm/mach-tegra')
| -rw-r--r-- | arch/arm/mach-tegra/cpuquiet.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/cpuquiet.c b/arch/arm/mach-tegra/cpuquiet.c index e2e8e1af8ce4..d903b0ce0c25 100644 --- a/arch/arm/mach-tegra/cpuquiet.c +++ b/arch/arm/mach-tegra/cpuquiet.c @@ -22,6 +22,7 @@ #include <linux/kernel.h> #include <linux/types.h> #include <linux/sched.h> +#include <linux/module.h> #include <linux/cpufreq.h> #include <linux/delay.h> #include <linux/err.h> @@ -521,6 +522,33 @@ static const struct file_operations hp_stats_fops = { }; +struct pm_qos_request min_cpu_req; +struct pm_qos_request max_cpu_req; + +static int min_cpus_get(void *data, u64 *val) +{ + *val = pm_qos_request(PM_QOS_MIN_ONLINE_CPUS); + return 0; +} +static int min_cpus_set(void *data, u64 val) +{ + pm_qos_update_request(&min_cpu_req, (s32)val); + return 0; +} +DEFINE_SIMPLE_ATTRIBUTE(min_cpus_fops, min_cpus_get, min_cpus_set, "%llu\n"); + +static int max_cpus_get(void *data, u64 *val) +{ + *val = pm_qos_request(PM_QOS_MAX_ONLINE_CPUS); + return 0; +} +static int max_cpus_set(void *data, u64 val) +{ + pm_qos_update_request(&max_cpu_req, (s32)val); + return 0; +} +DEFINE_SIMPLE_ATTRIBUTE(max_cpus_fops, max_cpus_get, max_cpus_set, "%llu\n"); + static int __init tegra_cpuquiet_debug_init(void) { if (!tegra3_cpu_lock) @@ -530,6 +558,19 @@ static int __init tegra_cpuquiet_debug_init(void) if (!hp_debugfs_root) return -ENOMEM; + pm_qos_add_request(&min_cpu_req, PM_QOS_MIN_ONLINE_CPUS, + PM_QOS_DEFAULT_VALUE); + pm_qos_add_request(&max_cpu_req, PM_QOS_MAX_ONLINE_CPUS, + PM_QOS_DEFAULT_VALUE); + + if (!debugfs_create_file( + "min_cpus", S_IRUGO, hp_debugfs_root, NULL, &min_cpus_fops)) + goto err_out; + + if (!debugfs_create_file( + "max_cpus", S_IRUGO, hp_debugfs_root, NULL, &max_cpus_fops)) + goto err_out; + if (!debugfs_create_file( "stats", S_IRUGO, hp_debugfs_root, NULL, &hp_stats_fops)) goto err_out; @@ -538,6 +579,8 @@ static int __init tegra_cpuquiet_debug_init(void) err_out: debugfs_remove_recursive(hp_debugfs_root); + pm_qos_remove_request(&min_cpu_req); + pm_qos_remove_request(&max_cpu_req); return -ENOMEM; } @@ -615,5 +658,7 @@ void tegra_auto_hotplug_exit(void) #ifdef CONFIG_DEBUG_FS debugfs_remove_recursive(hp_debugfs_root); + pm_qos_remove_request(&min_cpu_req); + pm_qos_remove_request(&max_cpu_req); #endif } |