From: Viresh Kumar <viresh.kumar@linaro.org>
To: Rafael Wysocki <rjw@rjwysocki.net>,
Viresh Kumar <viresh.kumar@linaro.org>
Cc: linux-pm@vger.kernel.org,
Vincent Guittot <vincent.guittot@linaro.org>,
linux-kernel@vger.kernel.org
Subject: [PATCH V2 01/10] cpufreq: Add policy create/remove notifiers
Date: Tue, 23 Jul 2019 11:44:01 +0530 [thread overview]
Message-ID: <1b93721f076ec9006b99c92e8a7045d01630cf4b.1563862014.git.viresh.kumar@linaro.org> (raw)
In-Reply-To: <cover.1563862014.git.viresh.kumar@linaro.org>
This reverts commit f9f41e3ef99ac9d4e91b07634362e393fb929aad.
We have a new use case for policy create/remove notifiers (for
allocating/freeing QoS requests per policy), lets add them back.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
---
drivers/cpufreq/cpufreq.c | 15 ++++++++++++++-
include/linux/cpufreq.h | 2 ++
2 files changed, 16 insertions(+), 1 deletion(-)
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 8dda62367816..c13dcb59b30c 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -1266,7 +1266,17 @@ static void cpufreq_policy_free(struct cpufreq_policy *policy)
DEV_PM_QOS_MAX_FREQUENCY);
dev_pm_qos_remove_notifier(dev, &policy->nb_min,
DEV_PM_QOS_MIN_FREQUENCY);
- dev_pm_qos_remove_request(policy->max_freq_req);
+
+ if (policy->max_freq_req) {
+ /*
+ * CPUFREQ_CREATE_POLICY notification is sent only after
+ * successfully adding max_freq_req request.
+ */
+ blocking_notifier_call_chain(&cpufreq_policy_notifier_list,
+ CPUFREQ_REMOVE_POLICY, policy);
+ dev_pm_qos_remove_request(policy->max_freq_req);
+ }
+
dev_pm_qos_remove_request(policy->min_freq_req);
kfree(policy->min_freq_req);
@@ -1391,6 +1401,9 @@ static int cpufreq_online(unsigned int cpu)
ret);
goto out_destroy_policy;
}
+
+ blocking_notifier_call_chain(&cpufreq_policy_notifier_list,
+ CPUFREQ_CREATE_POLICY, policy);
}
if (cpufreq_driver->get && has_target()) {
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index 536a049d7ecc..afc10384a681 100644
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -458,6 +458,8 @@ static inline void cpufreq_resume(void) {}
/* Policy Notifiers */
#define CPUFREQ_ADJUST (0)
#define CPUFREQ_NOTIFY (1)
+#define CPUFREQ_CREATE_POLICY (2)
+#define CPUFREQ_REMOVE_POLICY (3)
#ifdef CONFIG_CPU_FREQ
int cpufreq_register_notifier(struct notifier_block *nb, unsigned int list);
--
2.21.0.rc0.269.g1a574e7a288b
next prev parent reply other threads:[~2019-07-23 6:14 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-23 6:14 [PATCH V2 00/10] cpufreq: Migrate users of policy notifiers to QoS requests Viresh Kumar
2019-07-23 6:14 ` Viresh Kumar [this message]
2019-07-23 6:14 ` [PATCH V2 02/10] thermal: cpu_cooling: Switch to QoS requests instead of cpufreq notifier Viresh Kumar
2019-07-23 6:14 ` [PATCH V2 03/10] powerpc: macintosh: " Viresh Kumar
2019-07-23 6:14 ` [PATCH V2 04/10] cpufreq: powerpc_cbe: " Viresh Kumar
2019-08-09 2:34 ` Viresh Kumar
2019-08-09 9:01 ` Rafael J. Wysocki
2019-08-19 2:26 ` Viresh Kumar
2019-08-19 6:42 ` Rafael J. Wysocki
2019-08-19 6:47 ` Viresh Kumar
2019-08-10 12:19 ` Rafael J. Wysocki
2019-07-23 6:14 ` [PATCH V2 05/10] ACPI: cpufreq: " Viresh Kumar
2019-08-05 9:42 ` Rafael J. Wysocki
2019-08-06 4:39 ` Viresh Kumar
2019-08-06 8:01 ` Rafael J. Wysocki
2019-08-06 8:47 ` Viresh Kumar
2019-08-09 2:33 ` Viresh Kumar
2019-08-10 12:13 ` Rafael J. Wysocki
2019-08-28 8:50 ` [PATCH V3 " Viresh Kumar
2019-07-23 6:14 ` [PATCH V2 06/10] arch_topology: Use CPUFREQ_CREATE_POLICY instead of CPUFREQ_NOTIFY Viresh Kumar
2019-07-25 13:36 ` Greg Kroah-Hartman
2019-07-23 6:14 ` [PATCH V2 07/10] video: sa1100fb: Remove cpufreq policy notifier Viresh Kumar
2019-07-23 6:14 ` [PATCH V2 08/10] video: pxafb: " Viresh Kumar
2019-07-23 6:14 ` [PATCH V2 09/10] cpufreq: Remove CPUFREQ_ADJUST and CPUFREQ_NOTIFY policy notifier events Viresh Kumar
2019-07-23 6:14 ` [PATCH V2 10/10] Documentation: cpufreq: Update policy notifier documentation Viresh Kumar
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