From: mathieu.poirier@linaro.org (Mathieu Poirier)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH V5 07/26] coresight: moving PM runtime operations to core framework
Date: Sun, 29 Nov 2015 19:14:28 -0700 [thread overview]
Message-ID: <1448849687-5724-8-git-send-email-mathieu.poirier@linaro.org> (raw)
In-Reply-To: <1448849687-5724-1-git-send-email-mathieu.poirier@linaro.org>
Moving PM runtime operations in Coresight devices enable() and
disable() API to the framework core when a path is setup. That
way the runtime core doesn't have to be involved everytime a
path is enabled. It also avoids calling runtime PM operations
in IRQ context.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
---
drivers/hwtracing/coresight/coresight-etb10.c | 4 ----
drivers/hwtracing/coresight/coresight-etm3x.c | 3 ---
drivers/hwtracing/coresight/coresight-etm4x.c | 6 ------
drivers/hwtracing/coresight/coresight-funnel.c | 2 --
drivers/hwtracing/coresight/coresight-replicator-qcom.c | 4 ----
drivers/hwtracing/coresight/coresight-replicator.c | 2 --
drivers/hwtracing/coresight/coresight-tmc.c | 5 -----
drivers/hwtracing/coresight/coresight-tpiu.c | 2 --
drivers/hwtracing/coresight/coresight.c | 9 ++++++++-
9 files changed, 8 insertions(+), 29 deletions(-)
diff --git a/drivers/hwtracing/coresight/coresight-etb10.c b/drivers/hwtracing/coresight/coresight-etb10.c
index 77d0f9c1118d..1301edc44629 100644
--- a/drivers/hwtracing/coresight/coresight-etb10.c
+++ b/drivers/hwtracing/coresight/coresight-etb10.c
@@ -137,8 +137,6 @@ static int etb_enable(struct coresight_device *csdev)
struct etb_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
unsigned long flags;
- pm_runtime_get_sync(drvdata->dev);
-
spin_lock_irqsave(&drvdata->spinlock, flags);
etb_enable_hw(drvdata);
drvdata->enable = true;
@@ -247,8 +245,6 @@ static void etb_disable(struct coresight_device *csdev)
drvdata->enable = false;
spin_unlock_irqrestore(&drvdata->spinlock, flags);
- pm_runtime_put(drvdata->dev);
-
dev_info(drvdata->dev, "ETB disabled\n");
}
diff --git a/drivers/hwtracing/coresight/coresight-etm3x.c b/drivers/hwtracing/coresight/coresight-etm3x.c
index 9ee692a5c482..f3c9846d0f7f 100644
--- a/drivers/hwtracing/coresight/coresight-etm3x.c
+++ b/drivers/hwtracing/coresight/coresight-etm3x.c
@@ -358,7 +358,6 @@ static int etm_enable(struct coresight_device *csdev)
struct etm_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
int ret;
- pm_runtime_get_sync(csdev->dev.parent);
spin_lock(&drvdata->spinlock);
/*
@@ -382,7 +381,6 @@ static int etm_enable(struct coresight_device *csdev)
return 0;
err:
spin_unlock(&drvdata->spinlock);
- pm_runtime_put(csdev->dev.parent);
return ret;
}
@@ -439,7 +437,6 @@ static void etm_disable(struct coresight_device *csdev)
spin_unlock(&drvdata->spinlock);
put_online_cpus();
- pm_runtime_put(csdev->dev.parent);
dev_info(drvdata->dev, "ETM tracing disabled\n");
}
diff --git a/drivers/hwtracing/coresight/coresight-etm4x.c b/drivers/hwtracing/coresight/coresight-etm4x.c
index a6707642bb23..1c6e32dd6e49 100644
--- a/drivers/hwtracing/coresight/coresight-etm4x.c
+++ b/drivers/hwtracing/coresight/coresight-etm4x.c
@@ -72,7 +72,6 @@ static int etm4_trace_id(struct coresight_device *csdev)
if (!drvdata->enable)
return drvdata->trcid;
- pm_runtime_get_sync(drvdata->dev);
spin_lock_irqsave(&drvdata->spinlock, flags);
CS_UNLOCK(drvdata->base);
@@ -81,7 +80,6 @@ static int etm4_trace_id(struct coresight_device *csdev)
CS_LOCK(drvdata->base);
spin_unlock_irqrestore(&drvdata->spinlock, flags);
- pm_runtime_put(drvdata->dev);
return trace_id;
}
@@ -187,7 +185,6 @@ static int etm4_enable(struct coresight_device *csdev)
struct etmv4_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
int ret;
- pm_runtime_get_sync(drvdata->dev);
spin_lock(&drvdata->spinlock);
/*
@@ -207,7 +204,6 @@ static int etm4_enable(struct coresight_device *csdev)
return 0;
err:
spin_unlock(&drvdata->spinlock);
- pm_runtime_put(drvdata->dev);
return ret;
}
@@ -256,8 +252,6 @@ static void etm4_disable(struct coresight_device *csdev)
spin_unlock(&drvdata->spinlock);
put_online_cpus();
- pm_runtime_put(drvdata->dev);
-
dev_info(drvdata->dev, "ETM tracing disabled\n");
}
diff --git a/drivers/hwtracing/coresight/coresight-funnel.c b/drivers/hwtracing/coresight/coresight-funnel.c
index 2e36bde7fcb4..a47bba361833 100644
--- a/drivers/hwtracing/coresight/coresight-funnel.c
+++ b/drivers/hwtracing/coresight/coresight-funnel.c
@@ -69,7 +69,6 @@ static int funnel_enable(struct coresight_device *csdev, int inport,
{
struct funnel_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
- pm_runtime_get_sync(drvdata->dev);
funnel_enable_hw(drvdata, inport);
dev_info(drvdata->dev, "FUNNEL inport %d enabled\n", inport);
@@ -95,7 +94,6 @@ static void funnel_disable(struct coresight_device *csdev, int inport,
struct funnel_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
funnel_disable_hw(drvdata, inport);
- pm_runtime_put(drvdata->dev);
dev_info(drvdata->dev, "FUNNEL inport %d disabled\n", inport);
}
diff --git a/drivers/hwtracing/coresight/coresight-replicator-qcom.c b/drivers/hwtracing/coresight/coresight-replicator-qcom.c
index 584059e9e866..8149087e8966 100644
--- a/drivers/hwtracing/coresight/coresight-replicator-qcom.c
+++ b/drivers/hwtracing/coresight/coresight-replicator-qcom.c
@@ -48,8 +48,6 @@ static int replicator_enable(struct coresight_device *csdev, int inport,
{
struct replicator_state *drvdata = dev_get_drvdata(csdev->dev.parent);
- pm_runtime_get_sync(drvdata->dev);
-
CS_UNLOCK(drvdata->base);
/*
@@ -86,8 +84,6 @@ static void replicator_disable(struct coresight_device *csdev, int inport,
CS_LOCK(drvdata->base);
- pm_runtime_put(drvdata->dev);
-
dev_info(drvdata->dev, "REPLICATOR disabled\n");
}
diff --git a/drivers/hwtracing/coresight/coresight-replicator.c b/drivers/hwtracing/coresight/coresight-replicator.c
index 963ac197c253..a0fbb2e05389 100644
--- a/drivers/hwtracing/coresight/coresight-replicator.c
+++ b/drivers/hwtracing/coresight/coresight-replicator.c
@@ -41,7 +41,6 @@ static int replicator_enable(struct coresight_device *csdev, int inport,
{
struct replicator_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
- pm_runtime_get_sync(drvdata->dev);
dev_info(drvdata->dev, "REPLICATOR enabled\n");
return 0;
}
@@ -51,7 +50,6 @@ static void replicator_disable(struct coresight_device *csdev, int inport,
{
struct replicator_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
- pm_runtime_put(drvdata->dev);
dev_info(drvdata->dev, "REPLICATOR disabled\n");
}
diff --git a/drivers/hwtracing/coresight/coresight-tmc.c b/drivers/hwtracing/coresight/coresight-tmc.c
index a57c7ec1661f..5e2a71767870 100644
--- a/drivers/hwtracing/coresight/coresight-tmc.c
+++ b/drivers/hwtracing/coresight/coresight-tmc.c
@@ -242,12 +242,9 @@ static int tmc_enable(struct tmc_drvdata *drvdata, enum tmc_mode mode)
{
unsigned long flags;
- pm_runtime_get_sync(drvdata->dev);
-
spin_lock_irqsave(&drvdata->spinlock, flags);
if (drvdata->reading) {
spin_unlock_irqrestore(&drvdata->spinlock, flags);
- pm_runtime_put(drvdata->dev);
return -EBUSY;
}
@@ -381,8 +378,6 @@ out:
drvdata->enable = false;
spin_unlock_irqrestore(&drvdata->spinlock, flags);
- pm_runtime_put(drvdata->dev);
-
dev_info(drvdata->dev, "TMC disabled\n");
}
diff --git a/drivers/hwtracing/coresight/coresight-tpiu.c b/drivers/hwtracing/coresight/coresight-tpiu.c
index 7214efd10db5..e19b86e61c38 100644
--- a/drivers/hwtracing/coresight/coresight-tpiu.c
+++ b/drivers/hwtracing/coresight/coresight-tpiu.c
@@ -74,7 +74,6 @@ static int tpiu_enable(struct coresight_device *csdev)
{
struct tpiu_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
- pm_runtime_get_sync(csdev->dev.parent);
tpiu_enable_hw(drvdata);
dev_info(drvdata->dev, "TPIU enabled\n");
@@ -98,7 +97,6 @@ static void tpiu_disable(struct coresight_device *csdev)
struct tpiu_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
tpiu_disable_hw(drvdata);
- pm_runtime_put(csdev->dev.parent);
dev_info(drvdata->dev, "TPIU disabled\n");
}
diff --git a/drivers/hwtracing/coresight/coresight.c b/drivers/hwtracing/coresight/coresight.c
index 74beba461aa2..e63e42410ad2 100644
--- a/drivers/hwtracing/coresight/coresight.c
+++ b/drivers/hwtracing/coresight/coresight.c
@@ -24,6 +24,7 @@
#include <linux/coresight.h>
#include <linux/of_platform.h>
#include <linux/delay.h>
+#include <linux/pm_runtime.h>
#include "coresight-priv.h"
@@ -361,7 +362,8 @@ out:
/*
* A path from this element to a sink has been found. The elements
* leading to the sink are already enqueued, all that is left to do
- * is add a node for this element.
+ * is tell the PM runtime core we need this element and add a node
+ * for it.
*/
node = kzalloc(sizeof(struct coresight_node), GFP_KERNEL);
if (!node)
@@ -369,6 +371,7 @@ out:
node->csdev = csdev;
list_add(&node->link, path);
+ pm_runtime_get_sync(csdev->dev.parent);
return 0;
}
@@ -400,9 +403,13 @@ struct list_head *coresight_build_path(struct coresight_device *csdev)
*/
void coresight_release_path(struct list_head *path)
{
+ struct coresight_device *csdev;
struct coresight_node *nd, *next;
list_for_each_entry_safe(nd, next, path, link) {
+ csdev = nd->csdev;
+
+ pm_runtime_put_sync(csdev->dev.parent);
list_del(&nd->link);
kfree(nd);
}
--
2.1.4
next prev parent reply other threads:[~2015-11-30 2:14 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-30 2:14 [PATCH V5 00/26] Coresight integration with perf Mathieu Poirier
2015-11-30 2:14 ` [PATCH V5 01/26] coresight: etm3x: moving etm_readl/writel to header file Mathieu Poirier
2015-11-30 2:14 ` [PATCH V5 02/26] coresight: etm3x: moving sysFS entries to dedicated file Mathieu Poirier
2015-11-30 2:14 ` [PATCH V5 03/26] coresight: etm3x: unlocking tracers in default arch init Mathieu Poirier
2015-11-30 2:14 ` [PATCH V5 04/26] coresight: etm3x: splitting struct etm_drvdata Mathieu Poirier
2015-11-30 6:54 ` kbuild test robot
2015-11-30 2:14 ` [PATCH V5 05/26] coresight: etm3x: implementing 'cpu_id()' API Mathieu Poirier
2015-11-30 2:14 ` [PATCH V5 06/26] coresight: associating path with session rather than tracer Mathieu Poirier
2015-11-30 2:14 ` Mathieu Poirier [this message]
2015-11-30 2:14 ` [PATCH V5 08/26] coresight: etm3x: adding operation mode for etm_enable() Mathieu Poirier
2015-11-30 2:14 ` [PATCH V5 09/26] coresight: add API to get sink from path Mathieu Poirier
2015-11-30 2:14 ` [PATCH V5 10/26] coresight: etm3x: set progbit to stop trace collection Mathieu Poirier
2015-11-30 2:14 ` [PATCH V5 11/26] coresight: etm3x: changing default trace configuration Mathieu Poirier
2015-11-30 2:14 ` [PATCH V5 12/26] coresight: etm3x: consolidating initial config Mathieu Poirier
2015-11-30 2:14 ` [PATCH V5 13/26] coresight: etm3x: implementing user/kernel mode tracing Mathieu Poirier
2015-11-30 2:14 ` [PATCH V5 14/26] coresight: etm3x: adding perf_get/set_config() API Mathieu Poirier
2015-11-30 2:14 ` [PATCH V5 15/26] coresight: etm3x: implementing perf_enable/disable() API Mathieu Poirier
2015-11-30 2:14 ` [PATCH V5 16/26] coresight: etb10: moving to local atomic operations Mathieu Poirier
2015-11-30 2:14 ` [PATCH V5 17/26] coresight: adding operation mode for sink->enable() Mathieu Poirier
2015-11-30 2:14 ` [PATCH V5 18/26] coresight: etb10: implementing AUX space API Mathieu Poirier
2015-11-30 2:14 ` [PATCH V5 19/26] coresight: updating documentation to reflect integration with perf Mathieu Poirier
2015-11-30 2:14 ` [PATCH V5 20/26] perf: changing pmu::setup_aux() parameter to include event Mathieu Poirier
2015-11-30 2:14 ` [PATCH V5 21/26] coresight: etm-perf: new PMU driver for ETM tracers Mathieu Poirier
2015-11-30 23:23 ` Alexander Shishkin
2015-12-01 17:25 ` Mathieu Poirier
2015-11-30 2:14 ` [PATCH V5 22/26] coresight: introducing a global trace ID function Mathieu Poirier
2015-11-30 2:14 ` [PATCH V5 23/26] perf tools: making function set_max_cpu_num() non static Mathieu Poirier
2015-11-30 2:14 ` [PATCH V5 24/26] perf tools: adding perf_session to *info_prive_size() Mathieu Poirier
2015-11-30 16:15 ` Arnaldo Carvalho de Melo
2015-11-30 2:14 ` [PATCH V5 25/26] perf tools: making coresight PMU listable Mathieu Poirier
2015-11-30 2:14 ` [PATCH V5 26/26] perf tools: adding coresight etm PMU record capabilities Mathieu Poirier
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