linux/drivers/hwtracing, branch v4.9

coresight: tmc: mark symbols static where possible

2016-09-09T11:53:00Z

We get a few warnings when building kernel with W=1: drivers/hwtracing/coresight/coresight-tmc-etr.c:23:6: warning: no previous prototype for 'tmc_etr_enable_hw' [-Wmissing-prototypes] drivers/hwtracing/coresight/coresight-tmc-etf.c:25:6: warning: no previous prototype for 'tmc_etb_enable_hw' [-Wmissing-prototypes] drivers/hwtracing/coresight/coresight-tmc.c:250:9: warning: no previous prototype for ‘trigger_cntr_show’ [-Wmissing-prototypes] ... In fact, these functions are only used in the file in which they are declared and don't need a declaration, but can be made static. so this patch marks these functions with 'static'. Signed-off-by: Baoyou Xie Signed-off-by: Mathieu Poirier Signed-off-by: Greg Kroah-Hartman

coresight: perf: deal with error condition properly

2016-09-09T11:52:59Z

Function coresight_build_path() should return -ENOMEM when kzalloc fails to allocated the requested memory. That way callers can deal with the error condition in a similar way. Signed-off-by: Mathieu Poirier Signed-off-by: Greg Kroah-Hartman

coresight: etm4x: adding configurable start/stop filtering

2016-08-31T11:05:44Z

With this patch we add start/stop filtering as specified on the perf cmd line. When the IP matches the start address trace generation gets triggered. The stop condition is achieved when the IP matches the stop address. Signed-off-by: Mathieu Poirier Signed-off-by: Greg Kroah-Hartman

coresight: etm4x: adding configurable address range filtering

2016-08-31T11:05:44Z

This patch adds the capability to specify address ranges from the perf cmd line using the --filter option. If the IP falls within the range(s) program flow traces are generated. Signed-off-by: Mathieu Poirier Signed-off-by: Greg Kroah-Hartman

coresight: etm4x: configuring include/exclude function

2016-08-31T11:05:44Z

The include/exclude function of a tracer is applicable to address range and start/stop filters. To avoid duplication and reuse code moving the include/exclude configuration to a function of its own. Signed-off-by: Mathieu Poirier Signed-off-by: Greg Kroah-Hartman

coresight: etm4x: adding range filter configuration function

2016-08-31T11:05:43Z

Introducing a new function to do address range configuration generic enough to work for any address range and any comparator. Signed-off-by: Mathieu Poirier Signed-off-by: Greg Kroah-Hartman

coresight: etm4x: cleaning up default filter configuration

2016-08-31T11:05:43Z

The default filter configuration was hard to read and included some redundancy. This patch attempts to stream line configuration and improve readability. No change of functionality is included. Signed-off-by: Mathieu Poirier Signed-off-by: Greg Kroah-Hartman

coresight: etm4x: split default and filter configuration

2016-08-31T11:05:43Z

Splitting the steps involved in the configuration of a tracer. The first part is generic and can be reused for both sysFS and Perf methods. The second part pertains to the configuration of filters themselves where the source of the information used to configure the filters will vary depending on the access methods. Signed-off-by: Mathieu Poirier Signed-off-by: Greg Kroah-Hartman

coresight: etm-perf: configuring filters from perf core

2016-08-31T11:05:43Z

This patch implements the required API needed to access and retrieve range and start/stop filters from the perf core. Signed-off-by: Mathieu Poirier Signed-off-by: Greg Kroah-Hartman

coresight: remove duplicated enumeration

2016-08-31T11:05:43Z

Both ETMv3 and ETMv4 drivers are declaring an 'enum etm_addr_type', creating reduncancy. This patch removes the enumeration from the driver files and adds it to a common header. Signed-off-by: Mathieu Poirier Signed-off-by: Greg Kroah-Hartman