kernel/tools/perf/util/scripting-engines, branch linux-4.16.y

perf script python: Add script to profile and resolve physical mem type

2018-01-12T14:06:57Z

There could be different types of memory in the system. E.g normal System Memory, Persistent Memory. To understand how the workload maps to those memories, it's important to know the I/O statistics of them. Perf can collect physical addresses, but those are raw data. It still needs extra work to resolve the physical addresses. Provide a script to facilitate the physical addresses resolving and I/O statistics. Profile with MEM_INST_RETIRED.ALL_LOADS or MEM_UOPS_RETIRED.ALL_LOADS event if any of them is available. Look up the /proc/iomem and resolve the physical address. Provide memory type summary. Here is an example output: # perf script report mem-phys-addr Event: mem_inst_retired.all_loads:P Memory type count percentage ---------------------------------------- ----------- ----------- System RAM 74 53.2% Persistent Memory 55 39.6% N/A --- Changes since V2: - Apply the new license rules. - Add comments for globals Changes since V1: - Do not mix DLA and Load Latency. Do not compare the loads and stores. Only profile the loads. - Use event name to replace the RAW event Signed-off-by: Kan Liang Reviewed-by: Andi Kleen Cc: Dan Williams Cc: Jiri Olsa Cc: Peter Zijlstra Cc: Philippe Ombredanne Cc: Stephane Eranian Link: https://lkml.kernel.org/r/1515099595-34770-1-git-send-email-kan.liang@intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf perf: Remove duplicate includes

2017-12-27T15:15:49Z

These duplicate includes have been found with scripts/checkincludes.pl but they have been removed manually to avoid removing false positives. Signed-off-by: Pravin Shedge Cc: David S. Miller Cc: Greg Kroah-Hartman Cc: Jiri Olsa Cc: Peter Zijlstra Cc: Thomas Gleixner Link: http://lkml.kernel.org/r/1512582204-6493-1-git-send-email-pravin.shedge4linux@gmail.com Signed-off-by: Arnaldo Carvalho de Melo

perf script python: Generate hooks with additional argument

2017-07-26T01:43:21Z

Modify the signature of tracepoint specific and trace_unhandled hooks to add the perf_sample dict as a new argument. Create a python helper function to print a dictionary. Signed-off-by: Arun Kalyanasundaram Acked-by: Jiri Olsa Cc: Alexander Shishkin Cc: Daniel Borkmann Cc: David Carrillo-Cisneros Cc: David S. Miller Cc: Peter Zijlstra Cc: Seongjae Park Cc: Stephane Eranian Link: http://lkml.kernel.org/r/20170721220422.63962-6-arunkaly@google.com Signed-off-by: Arnaldo Carvalho de Melo

perf script python: Add perf_sample dict to tracepoint handlers

2017-07-26T01:43:20Z

The process_event python hook receives a dict with all perf_sample entries, but the tracepoint specific and trace_unhandled hooks predate the introduction of this dict, and do not receive it. Add the aforementioned dict as an additional argument to the affected handlers. To keep backwards compatibility (and avoid unnecessary work), do not pass the dict if the number of arguments signals that handler version predates this change. Signed-off-by: Arun Kalyanasundaram Acked-by: Jiri Olsa Cc: Alexander Shishkin Cc: Daniel Borkmann Cc: David Carrillo-Cisneros Cc: David S. Miller Cc: Peter Zijlstra Cc: Seongjae Park Cc: Stephane Eranian Link: http://lkml.kernel.org/r/20170721220422.63962-5-arunkaly@google.com Signed-off-by: Arnaldo Carvalho de Melo

perf script python: Add sample_read to dict

2017-07-26T01:43:19Z

Provide time_enabled, time_running and counter value in the perf_sample dict. Signed-off-by: Arun Kalyanasundaram Acked-by: Jiri Olsa Cc: Alexander Shishkin Cc: Daniel Borkmann Cc: David Carrillo-Cisneros Cc: David S. Miller Cc: Peter Zijlstra Cc: Seongjae Park Cc: Stephane Eranian Link: http://lkml.kernel.org/r/20170721220422.63962-4-arunkaly@google.com Signed-off-by: Arnaldo Carvalho de Melo

perf script python: Refactor creation of perf sample dict

2017-07-26T01:43:19Z

Move the creation of the dict containing perf_sample entries into a helper function to enable its reuse in other sample processing routines. Signed-off-by: Arun Kalyanasundaram Acked-by: Jiri Olsa Cc: Alexander Shishkin Cc: Daniel Borkmann Cc: David Carrillo-Cisneros Cc: David S. Miller Cc: Peter Zijlstra Cc: Seongjae Park Cc: Stephane Eranian Link: http://lkml.kernel.org/r/20170721220422.63962-3-arunkaly@google.com Signed-off-by: Arnaldo Carvalho de Melo

perf script python: Allocate memory only if handler exists

2017-07-26T01:43:18Z

Avoid allocating memory if hook handler is not available. This saves unused memory allocation and simplifies error path. Let handler in python_process_tracepoint point to either tracepoint specific or trace_unhandled hook. Use dict to check if handler points to trace_unhandled. Remove the exit label in python_process_general_event and return when no handler is available. Signed-off-by: Arun Kalyanasundaram Acked-by: Jiri Olsa Cc: Alexander Shishkin Cc: Daniel Borkmann Cc: David Carrillo-Cisneros Cc: David S. Miller Cc: Peter Zijlstra Cc: Seongjae Park Cc: Stephane Eranian Link: http://lkml.kernel.org/r/20170721220422.63962-2-arunkaly@google.com Signed-off-by: Arnaldo Carvalho de Melo

tools: Adopt __noreturn from kernel sources

2017-06-19T18:14:58Z

To have a more compact way to specify that a function doesn't return, instead of the open coded: __attribute__((noreturn)) And use it instead of the tools/perf/ specific variation, NORETURN. Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-l0y144qzixcy5t4c6i7pdiqj@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf script: Fix outdated comment for perf-trace-python

2017-06-07T23:23:22Z

Script generated by the '--gen-script' option contains an outdated comment. It mentions a 'perf-trace-python' document while it has been renamed to 'perf-script-python'. Fix it. Signed-off-by: SeongJae Park Cc: Alexander Shishkin Cc: Peter Zijlstra Cc: Thomas Gleixner Fixes: 133dc4c39c57 ("perf: Rename 'perf trace' to 'perf script'") Link: http://lkml.kernel.org/r/20170530111827.21732-2-sj38.park@gmail.com Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Move HAS_BOOL define to where perl headers are used

2017-04-26T18:27:52Z

This is a perl specific hack, so move it from util.h to where perl headers are used. Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-4igctbinuom2sr6g4b03jqht@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo