From mboxrd@z Thu Jan 1 00:00:00 1970 From: Antti P Miettinen Subject: [PATCH v2 7/8] PM QoS: Add CPU frequency maximum as PM QoS param Date: Fri, 13 Jan 2012 14:59:18 +0200 Message-ID: <1326459559-5436-8-git-send-email-amiettinen@nvidia.com> References: <1326459559-5436-1-git-send-email-amiettinen@nvidia.com> Return-path: In-Reply-To: <1326459559-5436-1-git-send-email-amiettinen@nvidia.com> Sender: cpufreq-owner@vger.kernel.org List-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: davej@redhat.com, cpufreq@vger.kernel.org, pavel@ucw.cz, rjw@sisk.pl, len.brown@intel.com, linux-pm@vger.kernel.org Cc: mgross@linux.intel.com Add maximum CPU frequency as PM QoS parameter. Signed-off-by: Antti P Miettinen --- include/linux/pm_qos.h | 2 ++ kernel/power/qos.c | 15 +++++++++++++++ 2 files changed, 17 insertions(+), 0 deletions(-) diff --git a/include/linux/pm_qos.h b/include/linux/pm_qos.h index 54a0d00..7b8d08b 100644 --- a/include/linux/pm_qos.h +++ b/include/linux/pm_qos.h @@ -15,6 +15,7 @@ enum { PM_QOS_NETWORK_LATENCY, PM_QOS_NETWORK_THROUGHPUT, PM_QOS_CPU_FREQ_MIN, + PM_QOS_CPU_FREQ_MAX, /* insert new class ID */ @@ -28,6 +29,7 @@ enum { #define PM_QOS_NETWORK_THROUGHPUT_DEFAULT_VALUE 0 #define PM_QOS_DEV_LAT_DEFAULT_VALUE 0 #define PM_QOS_CPU_FREQ_MIN_DEFAULT_VALUE 0 +#define PM_QOS_CPU_FREQ_MAX_DEFAULT_VALUE LONG_MAX struct pm_qos_request { struct plist_node node; diff --git a/kernel/power/qos.c b/kernel/power/qos.c index 07d761a..04b744b 100644 --- a/kernel/power/qos.c +++ b/kernel/power/qos.c @@ -115,12 +115,27 @@ static struct pm_qos_object cpu_freq_min_pm_qos = { }; +static BLOCKING_NOTIFIER_HEAD(cpu_freq_max_notifier); +static struct pm_qos_constraints cpu_freq_max_constraints = { + .list = PLIST_HEAD_INIT(cpu_freq_max_constraints.list), + .target_value = PM_QOS_CPU_FREQ_MAX_DEFAULT_VALUE, + .default_value = PM_QOS_CPU_FREQ_MAX_DEFAULT_VALUE, + .type = PM_QOS_MIN, + .notifiers = &cpu_freq_max_notifier, +}; +static struct pm_qos_object cpu_freq_max_pm_qos = { + .constraints = &cpu_freq_max_constraints, + .name = "cpu_freq_max", +}; + + static struct pm_qos_object *pm_qos_array[] = { &null_pm_qos, &cpu_dma_pm_qos, &network_lat_pm_qos, &network_throughput_pm_qos, &cpu_freq_min_pm_qos, + &cpu_freq_max_pm_qos, }; static ssize_t pm_qos_power_write(struct file *filp, const char __user *buf, -- 1.7.4.1