kernel/tools/perf/util/intel-pt.c, branch linux-4.16.y

perf intel-pt: Fix sync_switch

2018-04-19T06:54:06Z

commit 63d8e38f6ae6c36dd5b5ba0e8c112e8861532ea2 upstream. sync_switch is a facility to synchronize decoding more closely with the point in the kernel when the context actually switched. The flag when sync_switch is enabled was global to the decoding, whereas it is really specific to the CPU. The trace data for different CPUs is put on different queues, so add sync_switch to the intel_pt_queue structure and use that in preference to the global setting in the intel_pt structure. That fixes problems decoding one CPU's trace because sync_switch was disabled on a different CPU's queue. Signed-off-by: Adrian Hunter Cc: Jiri Olsa Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1520431349-30689-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Greg Kroah-Hartman

perf intel-pt: Fix overlap detection to identify consecutive buffers correctly

2018-04-19T06:54:06Z

commit 117db4b27bf08dba412faf3924ba55fe970c57b8 upstream. Overlap detection was not not updating the buffer's 'consecutive' flag. Marking buffers consecutive has the advantage that decoding begins from the start of the buffer instead of the first PSB. Fix overlap detection to identify consecutive buffers correctly. Signed-off-by: Adrian Hunter Cc: Jiri Olsa Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1520431349-30689-2-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Greg Kroah-Hartman

perf tools: Get rid of unused 'swapped' parameter from perf_event__synthesize_sample()

2018-01-18T12:01:23Z

There is never a need to synthesize a 'swapped' sample, so all callers to perf_event__synthesize_sample() pass 'false' as the value to 'swapped'. So get rid of the unused 'swapped' parameter. Signed-off-by: Adrian Hunter Acked-by: Jiri Olsa Link: http://lkml.kernel.org/r/1516108492-21401-4-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf intel-pt/bts: Do not swap when synthesizing samples

2018-01-18T12:00:16Z

Both 'perf inject' and internal tools consume cpu endian samples, so there is never a need to do any swapping when synthesizing samples. Signed-off-by: Adrian Hunter Acked-by: Jiri Olsa Link: http://lkml.kernel.org/r/1516108492-21401-2-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Rename struct perf_data_file to perf_data

2017-10-30T16:36:09Z

Rename struct perf_data_file to perf_data, because we will add the possibility to have multiple files under perf.data, so the 'perf_data' name fits better. Signed-off-by: Jiri Olsa Cc: Andi Kleen Cc: Changbin Du Cc: David Ahern Cc: Jin Yao Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-39wn4d77phel3dgkzo3lyan0@git.kernel.org [ Fixup recent changes in 'perf script --per-event-dump' ] Signed-off-by: Arnaldo Carvalho de Melo

perf intel-pt: Synthesize new power and "ptwrite" events

2017-06-30T14:48:28Z

Synthesize new power and ptwrite events. Power events report changes to C-state but I have also added support for the existing CBR (core-to-bus ratio) packet and included that when outputting power events. The PTWRITE packet is associated with the new "ptwrite" instruction, which is essentially just a way to stuff a 32 or 64 bit value into the PT trace. More details can be found in the patches that add documentation and in the Intel SDM. Signed-off-by: Adrian Hunter Cc: Andi Kleen Link: http://lkml.kernel.org/r/1498811805-2335-1-git-send-email-adrian.hunter@intel.com [ Copy the description of such packet from the patchkit cover message ] Signed-off-by: Arnaldo Carvalho de Melo

perf intel-pt: Move code in intel_pt_synth_events() to simplify attr setting

2017-06-30T14:44:36Z

intel_pt_synth_events() uses the same attr structure to create each event. Move the code around a bit to simplify that. Signed-off-by: Adrian Hunter Cc: Andi Kleen Link: http://lkml.kernel.org/r/1495786658-18063-33-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf intel-pt: Factor out intel_pt_set_event_name()

2017-06-30T14:44:36Z

Factor out intel_pt_set_event_name() so it can be reused. Signed-off-by: Adrian Hunter Cc: Andi Kleen Link: http://lkml.kernel.org/r/1495786658-18063-32-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf intel-pt: Tidy messages into called function intel_pt_synth_event()

2017-06-30T14:44:35Z

Tidy print messages into called function intel_pt_synth_event(). Signed-off-by: Adrian Hunter Cc: Andi Kleen Link: http://lkml.kernel.org/r/1495786658-18063-31-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf intel-pt: Tidy Intel PT evsel lookup into separate function

2017-06-30T14:44:35Z

Tidy the lookup of the Intel PT selected event (perf_evsel) into a separate function. Signed-off-by: Adrian Hunter Cc: Andi Kleen Link: http://lkml.kernel.org/r/1495786658-18063-30-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo