From: Mathieu Poirier <mathieu.poirier@linaro.org> To: gregkh@linuxfoundation.org, alexander.shishkin@linux.intel.com Cc: zhang.chunyan@linaro.org, mike.leach@arm.com, tor@ti.com, al.grant@arm.com, pawel.moll@arm.com, fainelli@broadcom.com, linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, Mathieu Poirier <mathieu.poirier@linaro.org> Subject: [PATCH V5 09/26] coresight: add API to get sink from path Date: Sun, 29 Nov 2015 19:14:30 -0700 [thread overview] Message-ID: <1448849687-5724-10-git-send-email-mathieu.poirier@linaro.org> (raw) In-Reply-To: <1448849687-5724-1-git-send-email-mathieu.poirier@linaro.org> Add an API allowing external code to quickly get a handle on the sink within a path. The sink is always last, but adding an API allows to keep the path's node structure private and remove redundant checks. Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> --- drivers/hwtracing/coresight/coresight-priv.h | 1 + drivers/hwtracing/coresight/coresight.c | 15 +++++++++++++++ 2 files changed, 16 insertions(+) diff --git a/drivers/hwtracing/coresight/coresight-priv.h b/drivers/hwtracing/coresight/coresight-priv.h index 2dc59a5c5b1e..ed116b303e87 100644 --- a/drivers/hwtracing/coresight/coresight-priv.h +++ b/drivers/hwtracing/coresight/coresight-priv.h @@ -60,6 +60,7 @@ static inline void CS_UNLOCK(void __iomem *addr) void coresight_disable_path(struct list_head *path); int coresight_enable_path(struct list_head *path); +struct coresight_device *coresight_get_sink(struct list_head *path); struct list_head *coresight_build_path(struct coresight_device *csdev); void coresight_release_path(struct list_head *path); diff --git a/drivers/hwtracing/coresight/coresight.c b/drivers/hwtracing/coresight/coresight.c index 4e326d792100..c02da2edfd80 100644 --- a/drivers/hwtracing/coresight/coresight.c +++ b/drivers/hwtracing/coresight/coresight.c @@ -322,6 +322,21 @@ err: goto out; } +struct coresight_device *coresight_get_sink(struct list_head *path) +{ + struct coresight_device *csdev; + + if (!path) + return NULL; + + csdev = list_last_entry(path, struct coresight_node, link)->csdev; + if (csdev->type != CORESIGHT_DEV_TYPE_SINK && + csdev->type != CORESIGHT_DEV_TYPE_LINKSINK) + return NULL; + + return csdev; +} + /** * _coresight_build_path - recursively build a path from a @csdev to a sink. * @csdev: The device to start from. -- 2.1.4
WARNING: multiple messages have this Message-ID (diff)
From: mathieu.poirier@linaro.org (Mathieu Poirier) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH V5 09/26] coresight: add API to get sink from path Date: Sun, 29 Nov 2015 19:14:30 -0700 [thread overview] Message-ID: <1448849687-5724-10-git-send-email-mathieu.poirier@linaro.org> (raw) In-Reply-To: <1448849687-5724-1-git-send-email-mathieu.poirier@linaro.org> Add an API allowing external code to quickly get a handle on the sink within a path. The sink is always last, but adding an API allows to keep the path's node structure private and remove redundant checks. Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> --- drivers/hwtracing/coresight/coresight-priv.h | 1 + drivers/hwtracing/coresight/coresight.c | 15 +++++++++++++++ 2 files changed, 16 insertions(+) diff --git a/drivers/hwtracing/coresight/coresight-priv.h b/drivers/hwtracing/coresight/coresight-priv.h index 2dc59a5c5b1e..ed116b303e87 100644 --- a/drivers/hwtracing/coresight/coresight-priv.h +++ b/drivers/hwtracing/coresight/coresight-priv.h @@ -60,6 +60,7 @@ static inline void CS_UNLOCK(void __iomem *addr) void coresight_disable_path(struct list_head *path); int coresight_enable_path(struct list_head *path); +struct coresight_device *coresight_get_sink(struct list_head *path); struct list_head *coresight_build_path(struct coresight_device *csdev); void coresight_release_path(struct list_head *path); diff --git a/drivers/hwtracing/coresight/coresight.c b/drivers/hwtracing/coresight/coresight.c index 4e326d792100..c02da2edfd80 100644 --- a/drivers/hwtracing/coresight/coresight.c +++ b/drivers/hwtracing/coresight/coresight.c @@ -322,6 +322,21 @@ err: goto out; } +struct coresight_device *coresight_get_sink(struct list_head *path) +{ + struct coresight_device *csdev; + + if (!path) + return NULL; + + csdev = list_last_entry(path, struct coresight_node, link)->csdev; + if (csdev->type != CORESIGHT_DEV_TYPE_SINK && + csdev->type != CORESIGHT_DEV_TYPE_LINKSINK) + return NULL; + + return csdev; +} + /** * _coresight_build_path - recursively build a path from a @csdev to a sink. * @csdev: The device to start from. -- 2.1.4
next prev parent reply other threads:[~2015-11-30 2:22 UTC|newest] Thread overview: 62+ 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 ` 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 ` 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 ` 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 ` Mathieu Poirier 2015-11-30 2:14 ` [PATCH V5 04/26] coresight: etm3x: splitting struct etm_drvdata Mathieu Poirier 2015-11-30 2:14 ` Mathieu Poirier 2015-11-30 6:54 ` kbuild test robot 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 ` 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 2015-11-30 2:14 ` [PATCH V5 07/26] coresight: moving PM runtime operations to core framework Mathieu Poirier 2015-11-30 2:14 ` Mathieu Poirier 2015-11-30 2:14 ` [PATCH V5 08/26] coresight: etm3x: adding operation mode for etm_enable() Mathieu Poirier 2015-11-30 2:14 ` Mathieu Poirier 2015-11-30 2:14 ` Mathieu Poirier [this message] 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 ` Mathieu Poirier 2015-11-30 2:14 ` [PATCH V5 11/26] coresight: etm3x: changing default trace configuration Mathieu Poirier 2015-11-30 2:14 ` Mathieu Poirier 2015-11-30 2:14 ` [PATCH V5 12/26] coresight: etm3x: consolidating initial config Mathieu Poirier 2015-11-30 2:14 ` 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 ` 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 ` 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 ` 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 ` 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 ` Mathieu Poirier 2015-11-30 2:14 ` [PATCH V5 18/26] coresight: etb10: implementing AUX space API Mathieu Poirier 2015-11-30 2:14 ` 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 ` 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 ` 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 2:14 ` Mathieu Poirier 2015-11-30 23:23 ` Alexander Shishkin 2015-11-30 23:23 ` Alexander Shishkin 2015-12-01 17:25 ` Mathieu Poirier 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 ` 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 ` 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 2:14 ` Mathieu Poirier 2015-11-30 16:15 ` Arnaldo Carvalho de Melo 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 ` Mathieu Poirier 2015-11-30 2:14 ` [PATCH V5 26/26] perf tools: adding coresight etm PMU record capabilities Mathieu Poirier 2015-11-30 2:14 ` Mathieu Poirier
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