BMC/Intel-BMC/linux.git/tools/perf/util/auxtrace.c, branch dev

perf auxtrace: Fix misplaced check for HAVE_SYNC_COMPARE_AND_SWAP_SUPPORT

2015-07-15T14:57:28+00:00

Move the checking for HAVE_SYNC_COMPARE_AND_SWAP_SUPPORT for AUX area mmaps until after checking if such mmaps are used anyway. Reported-by: Alexey Brodkin Signed-off-by: Adrian Hunter Tested-by: Alexey Brodkin Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Vineet Gupta Cc: linux-arch@vger.kernel.org Link: http://lkml.kernel.org/r/55A5023C.7020907@intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Allow auxtrace data alignment

2015-06-23T21:28:37+00:00

Allow auxtrace data to be a multiple of something other than page size. That is needed for BTS where the buffer contains 24-byte records. Signed-off-by: Adrian Hunter Cc: Jiri Olsa Link: http://lkml.kernel.org/r/1432906425-9911-11-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf thread_map: Don't access the array entries directly

2015-06-23T21:21:44+00:00

Instead provide a method to set the array entries, and another to access the contents. Signed-off-by: Jiri Olsa Cc: Adrian Hunter Cc: Andi Kleen Cc: David Ahern Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1435012588-9007-2-git-send-email-jolsa@kernel.org [ Split providing the set/get accessors from transforming the entries structs ] Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Add AUX area tracing Snapshot Mode

2015-05-05T21:13:00+00:00

Add support for making snapshots of AUX area tracing data. Signed-off-by: Adrian Hunter Acked-by: Jiri Olsa Cc: David Ahern Cc: Frederic Weisbecker Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1430404667-10593-9-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf auxtrace: Add option to synthesize events for transactions

2015-05-05T21:12:55+00:00

Add AUX area tracing option 'x' to synthesize events for transactions. This will be used by Intel PT to synthesize an event record for each TSX start, commit or abort. Signed-off-by: Adrian Hunter Acked-by: Jiri Olsa Cc: David Ahern Cc: Frederic Weisbecker Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1430404667-10593-6-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Add AUX area tracing index

2015-05-04T22:48:47+00:00

Add an index of AUX area tracing events within a perf.data file. perf record uses a special user event PERF_RECORD_FINISHED_ROUND to enable sorting of events in chunks instead of having to sort all events altogether. AUX area tracing events contain data that can span back to the very beginning of the recording period. i.e. they do not obey the rules of PERF_RECORD_FINISHED_ROUND. By adding an index, AUX area tracing events can be found in advance and the PERF_RECORD_FINISHED_ROUND approach works as usual. The index is recorded with the auxtrace feature in the perf.data file. A session reads the index but does not process it. An AUX area decoder can queue all the AUX area data in advance using auxtrace_queues__process_index() or otherwise process the index in some custom manner. Signed-off-by: Adrian Hunter Acked-by: Jiri Olsa Cc: David Ahern Cc: Frederic Weisbecker Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1430404667-10593-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf auxtrace: Add a hashtable for caching

2015-04-29T13:37:55+00:00

Decoding AUX area data may involve walking object code. Rather than repetitively decoding the same instructions, a cache can be used to cache the results. This patch implements a fairly generic hashtable with a 32-bit key that could be used for other purposes as well. Signed-off-by: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1428594864-29309-15-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf auxtrace: Add processing for AUX area tracing events

2015-04-29T13:37:55+00:00

Provide hooks so that an AUX area decoder can process AUX area tracing events. Signed-off-by: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1428594864-29309-14-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf auxtrace: Add a heap for sorting AUX area tracing queues

2015-04-29T13:37:54+00:00

In order to process AUX area tracing data in time order, the queue with data with the lowest timestamp must be processed first. Provide a heap to keep track of which queue that is. As with the queues, a decoder does not have to use the heap, but Intel BTS and Intel PT will use it. Signed-off-by: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1428594864-29309-13-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf auxtrace: Add helpers for queuing AUX area tracing data

2015-04-29T13:37:54+00:00

Provide functions to queue AUX area tracing data buffers for processing. A AUX area decoder need not use the queues, however Intel BTS and Intel PT will use them. There is one queue for each of the mmap buffers that were used for recording. Because those mmaps were associated with per-cpu or per-thread contexts, the data is time-ordered with respect to those contexts. Signed-off-by: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1429608111-18160-1-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo