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 05/26] coresight: etm3x: implementing 'cpu_id()' API Date: Sun, 29 Nov 2015 19:14:26 -0700 [thread overview] Message-ID: <1448849687-5724-6-git-send-email-mathieu.poirier@linaro.org> (raw) In-Reply-To: <1448849687-5724-1-git-send-email-mathieu.poirier@linaro.org> Other than plainly parsing the device tree there is no way to know which CPU a tracer is affined to. As such adding an interface to lookup the CPU field enclosed in the etm_drvdata structure that was initialised at boot time. Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> --- drivers/hwtracing/coresight/coresight-etm3x.c | 8 ++++++++ include/linux/coresight.h | 3 +++ 2 files changed, 11 insertions(+) diff --git a/drivers/hwtracing/coresight/coresight-etm3x.c b/drivers/hwtracing/coresight/coresight-etm3x.c index 3491c46d695a..9ee692a5c482 100644 --- a/drivers/hwtracing/coresight/coresight-etm3x.c +++ b/drivers/hwtracing/coresight/coresight-etm3x.c @@ -312,6 +312,13 @@ static void etm_enable_hw(void *info) dev_dbg(drvdata->dev, "cpu: %d enable smp call done\n", drvdata->cpu); } +static int etm_cpu_id(struct coresight_device *csdev) +{ + struct etm_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); + + return drvdata->cpu; +} + int etm_get_trace_id(struct etm_drvdata *drvdata) { unsigned long flags; @@ -438,6 +445,7 @@ static void etm_disable(struct coresight_device *csdev) } static const struct coresight_ops_source etm_source_ops = { + .cpu_id = etm_cpu_id, .trace_id = etm_trace_id, .enable = etm_enable, .disable = etm_disable, diff --git a/include/linux/coresight.h b/include/linux/coresight.h index a7cabfa23b55..bf62b265bf52 100644 --- a/include/linux/coresight.h +++ b/include/linux/coresight.h @@ -205,12 +205,15 @@ struct coresight_ops_link { /** * struct coresight_ops_source - basic operations for a source * Operations available for sources. + * @cpu_id: returns the value of the CPU number this component + * is associated to. * @trace_id: returns the value of the component's trace ID as known to the HW. * @enable: enables tracing for a source. * @disable: disables tracing for a source. */ struct coresight_ops_source { + int (*cpu_id)(struct coresight_device *csdev); int (*trace_id)(struct coresight_device *csdev); int (*enable)(struct coresight_device *csdev); void (*disable)(struct coresight_device *csdev); -- 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 05/26] coresight: etm3x: implementing 'cpu_id()' API Date: Sun, 29 Nov 2015 19:14:26 -0700 [thread overview] Message-ID: <1448849687-5724-6-git-send-email-mathieu.poirier@linaro.org> (raw) In-Reply-To: <1448849687-5724-1-git-send-email-mathieu.poirier@linaro.org> Other than plainly parsing the device tree there is no way to know which CPU a tracer is affined to. As such adding an interface to lookup the CPU field enclosed in the etm_drvdata structure that was initialised at boot time. Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> --- drivers/hwtracing/coresight/coresight-etm3x.c | 8 ++++++++ include/linux/coresight.h | 3 +++ 2 files changed, 11 insertions(+) diff --git a/drivers/hwtracing/coresight/coresight-etm3x.c b/drivers/hwtracing/coresight/coresight-etm3x.c index 3491c46d695a..9ee692a5c482 100644 --- a/drivers/hwtracing/coresight/coresight-etm3x.c +++ b/drivers/hwtracing/coresight/coresight-etm3x.c @@ -312,6 +312,13 @@ static void etm_enable_hw(void *info) dev_dbg(drvdata->dev, "cpu: %d enable smp call done\n", drvdata->cpu); } +static int etm_cpu_id(struct coresight_device *csdev) +{ + struct etm_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); + + return drvdata->cpu; +} + int etm_get_trace_id(struct etm_drvdata *drvdata) { unsigned long flags; @@ -438,6 +445,7 @@ static void etm_disable(struct coresight_device *csdev) } static const struct coresight_ops_source etm_source_ops = { + .cpu_id = etm_cpu_id, .trace_id = etm_trace_id, .enable = etm_enable, .disable = etm_disable, diff --git a/include/linux/coresight.h b/include/linux/coresight.h index a7cabfa23b55..bf62b265bf52 100644 --- a/include/linux/coresight.h +++ b/include/linux/coresight.h @@ -205,12 +205,15 @@ struct coresight_ops_link { /** * struct coresight_ops_source - basic operations for a source * Operations available for sources. + * @cpu_id: returns the value of the CPU number this component + * is associated to. * @trace_id: returns the value of the component's trace ID as known to the HW. * @enable: enables tracing for a source. * @disable: disables tracing for a source. */ struct coresight_ops_source { + int (*cpu_id)(struct coresight_device *csdev); int (*trace_id)(struct coresight_device *csdev); int (*enable)(struct coresight_device *csdev); void (*disable)(struct coresight_device *csdev); -- 2.1.4
next prev parent reply other threads:[~2015-11-30 2:16 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 ` Mathieu Poirier [this message] 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 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 ` [PATCH V5 09/26] coresight: add API to get sink from path Mathieu Poirier 2015-11-30 2:14 ` 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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