From: Suzuki K Poulose <suzuki.poulose@arm.com>
To: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org, mathieu.poirier@linaro.org,
mike.leach@linaro.org, robert.walker@arm.com,
coresight@lists.linaro.org,
Suzuki K Poulose <suzuki.poulose@arm.com>
Subject: [PATCH v3 11/13] coresight: perf: Add helper to retrieve sink configuration
Date: Thu, 26 Jul 2018 13:54:49 +0100 [thread overview]
Message-ID: <1532609691-16863-12-git-send-email-suzuki.poulose@arm.com> (raw)
In-Reply-To: <1532609691-16863-1-git-send-email-suzuki.poulose@arm.com>
We can always find the sink configuration for a given perf_output_handle.
Add a helper to retrieve the sink configuration for a given
perf_output_handle. This will be used to get rid of the set_buffer()
call back.
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
---
drivers/hwtracing/coresight/coresight-etm-perf.c | 14 -------------
drivers/hwtracing/coresight/coresight-etm-perf.h | 26 ++++++++++++++++++++++++
2 files changed, 26 insertions(+), 14 deletions(-)
diff --git a/drivers/hwtracing/coresight/coresight-etm-perf.c b/drivers/hwtracing/coresight/coresight-etm-perf.c
index ad87441..16b83d8 100644
--- a/drivers/hwtracing/coresight/coresight-etm-perf.c
+++ b/drivers/hwtracing/coresight/coresight-etm-perf.c
@@ -23,20 +23,6 @@
static struct pmu etm_pmu;
static bool etm_perf_up;
-/**
- * struct etm_event_data - Coresight specifics associated to an event
- * @work: Handle to free allocated memory outside IRQ context.
- * @mask: Hold the CPU(s) this event was set for.
- * @snk_config: The sink configuration.
- * @path: An array of path, each slot for one CPU.
- */
-struct etm_event_data {
- struct work_struct work;
- cpumask_t mask;
- void *snk_config;
- struct list_head * __percpu *path;
-};
-
static DEFINE_PER_CPU(struct perf_output_handle, ctx_handle);
static DEFINE_PER_CPU(struct coresight_device *, csdev_src);
diff --git a/drivers/hwtracing/coresight/coresight-etm-perf.h b/drivers/hwtracing/coresight/coresight-etm-perf.h
index 4197df4..da7d933 100644
--- a/drivers/hwtracing/coresight/coresight-etm-perf.h
+++ b/drivers/hwtracing/coresight/coresight-etm-perf.h
@@ -7,6 +7,7 @@
#ifndef _CORESIGHT_ETM_PERF_H
#define _CORESIGHT_ETM_PERF_H
+#include <linux/percpu-defs.h>
#include "coresight-priv.h"
struct coresight_device;
@@ -42,14 +43,39 @@ struct etm_filters {
bool ssstatus;
};
+/**
+ * struct etm_event_data - Coresight specifics associated to an event
+ * @work: Handle to free allocated memory outside IRQ context.
+ * @mask: Hold the CPU(s) this event was set for.
+ * @snk_config: The sink configuration.
+ * @path: An array of path, each slot for one CPU.
+ */
+struct etm_event_data {
+ struct work_struct work;
+ cpumask_t mask;
+ void *snk_config;
+ struct list_head * __percpu *path;
+};
#ifdef CONFIG_CORESIGHT
int etm_perf_symlink(struct coresight_device *csdev, bool link);
+static inline void *etm_perf_sink_config(struct perf_output_handle *handle)
+{
+ struct etm_event_data *data = perf_get_aux(handle);
+ if (data)
+ return data->snk_config;
+ return NULL;
+}
#else
static inline int etm_perf_symlink(struct coresight_device *csdev, bool link)
{ return -EINVAL; }
+static inline void *etm_perf_sink_config(struct perf_output_handle *handle)
+{
+ return NULL;
+}
+
#endif /* CONFIG_CORESIGHT */
#endif
--
2.7.4
next prev parent reply other threads:[~2018-07-26 12:55 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-26 12:54 [PATCH v3 00/13] coresight: perf: Support for TMC ETR backend Suzuki K Poulose
2018-07-26 12:54 ` [PATCH v3 01/13] coresight: Fix handling of sinks Suzuki K Poulose
2018-07-26 12:54 ` [PATCH v3 02/13] coresight: etb10: Fix handling of perf mode Suzuki K Poulose
2018-07-31 17:07 ` Mathieu Poirier
2018-07-31 21:32 ` Suzuki K Poulose
2018-08-01 19:23 ` Mathieu Poirier
2018-07-26 12:54 ` [PATCH v3 03/13] coresight: perf: Fix per cpu path management Suzuki K Poulose
2018-07-26 12:54 ` [PATCH v3 04/13] coresight: perf: Avoid unncessary CPU hotplug read lock Suzuki K Poulose
2018-07-26 12:54 ` [PATCH v3 05/13] coresight: perf: Allow tracing on hotplugged CPUs Suzuki K Poulose
2018-07-31 17:46 ` Mathieu Poirier
2018-07-31 23:08 ` Suzuki K Poulose
2018-07-26 12:54 ` [PATCH v3 06/13] coresight: perf: Disable trace path upon source error Suzuki K Poulose
2018-07-26 12:54 ` [PATCH v3 07/13] coresight: tmc-etr: Handle driver mode specific ETR buffers Suzuki K Poulose
2018-07-26 12:54 ` [PATCH v3 08/13] coresight: tmc-etr: Relax collection of trace from sysfs mode Suzuki K Poulose
2018-07-26 12:54 ` [PATCH v3 09/13] coresight: Convert driver messages to dev_dbg Suzuki K Poulose
2018-07-26 12:54 ` [PATCH v3 10/13] coresight: perf: Remove reset_buffer call back for sinks Suzuki K Poulose
2018-07-26 12:54 ` Suzuki K Poulose [this message]
2018-07-26 12:54 ` [PATCH v3 12/13] coresight: perf: Remove set_buffer call back Suzuki K Poulose
2018-07-26 12:54 ` [PATCH v3 13/13] coresight: etm-perf: Add support for ETR backend Suzuki K Poulose
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