kernel.git/tools/perf/util/db-export.c, branch linux-5.3.y

perf db-export: Export switch events

2019-07-10T15:35:38Z

Export details of switch events including the threads and their current comms. Signed-off-by: Adrian Hunter Cc: Jiri Olsa Link: http://lkml.kernel.org/r/20190710085810.1650-20-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf db-export: Factor out db_export__threads()

2019-07-10T15:35:18Z

In preparation for exporting switch events, factor out db_export__threads(). Signed-off-by: Adrian Hunter Cc: Jiri Olsa Link: http://lkml.kernel.org/r/20190710085810.1650-19-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf db-export: Also export thread's current comm

2019-07-10T15:14:07Z

Currently, the initial comm of the main thread is exported. Export also a thread's current comm. That better supports the tracing of multi-threaded applications that set different comms for different threads to make it easier to distinguish them. Signed-off-by: Adrian Hunter Cc: Jiri Olsa Link: http://lkml.kernel.org/r/20190710085810.1650-13-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf db-export: Factor out db_export__comm()

2019-07-10T15:13:51Z

In preparation for exporting the current comm for a thread, factor out db_export__comm(). Signed-off-by: Adrian Hunter Cc: Jiri Olsa Link: http://lkml.kernel.org/r/20190710085810.1650-12-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf db-export: Export comm details

2019-07-10T15:13:08Z

In preparation for exporting the current comm for a thread, export comm thread id, start time and exec flag. Signed-off-by: Adrian Hunter Cc: Jiri Olsa Link: http://lkml.kernel.org/r/20190710085810.1650-9-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf db-export: Fix a white space issue in db_export__sample()

2019-07-10T15:12:56Z

Fix a white space issue in db_export__sample() Signed-off-by: Adrian Hunter Cc: Jiri Olsa Link: http://lkml.kernel.org/r/20190710085810.1650-8-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf db-export: Move export__comm_thread into db_export__sample()

2019-07-10T15:12:45Z

Move call to db_export__comm_thread() from db_export__thread() into db_export__sample() because it makes the code easier to understand, and add explanatory comments. Signed-off-by: Adrian Hunter Cc: Jiri Olsa Link: http://lkml.kernel.org/r/20190710085810.1650-7-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf db-export: Export comm before exporting thread

2019-07-10T15:12:25Z

Export comm before exporting the non-main thread because db_export__thread() also exports the comm_thread. Signed-off-by: Adrian Hunter Cc: Jiri Olsa Link: http://lkml.kernel.org/r/20190710085810.1650-6-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf db-export: Export main_thread in db_export__sample()

2019-07-10T15:12:05Z

Export main_thread in db_export__sample() because it makes the code easier to understand, and prepares db_export__thread() for further simplification. Signed-off-by: Adrian Hunter Cc: Jiri Olsa Link: http://lkml.kernel.org/r/20190710085810.1650-5-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf db-export: Pass main_thread to db_export__thread()

2019-07-10T15:11:04Z

Calls to db_export__thread() already have main_thread so there is no reason to get it again, instead pass it as a parameter. Note that one difference in this approach is that the main thread is not created if it does not exist. It is better if it is not created because: - If main_thread is being traced it will have been created already. - If it is not being traced, there will be no other information about it, and it will never get deleted because there will be no EXIT event. Signed-off-by: Adrian Hunter Cc: Jiri Olsa Link: http://lkml.kernel.org/r/20190710085810.1650-4-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo