kernel/tools/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.c, branch linux-4.15.y

perf intel-pt: Add reserved byte to CBR packet payload

2017-06-21T14:35:50Z

Future proof CBR packet decoding by passing through also the undefined 'reserved' byte in the packet payload. Signed-off-by: Adrian Hunter Cc: Andi Kleen Link: http://lkml.kernel.org/r/1495786658-18063-15-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf intel-pt: Add decoder support for ptwrite and power event packets

2017-06-21T14:35:50Z

Add decoder support for PTWRITE, MWAIT, PWRE, PWRX and EXSTOP packets. This patch only affects the decoder, so the tools still do not select or consume the new information. That is added in subsequent patches. Signed-off-by: Adrian Hunter Cc: Andi Kleen Link: http://lkml.kernel.org/r/1495786658-18063-14-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf intel-pt: Use __fallthrough

2017-02-09T19:32:03Z

To address new warnings emmited by gcc 7, e.g.:: CC /tmp/build/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.o CC /tmp/build/perf/tests/parse-events.o util/intel-pt-decoder/intel-pt-pkt-decoder.c: In function 'intel_pt_pkt_desc': util/intel-pt-decoder/intel-pt-pkt-decoder.c:499:6: error: this statement may fall through [-Werror=implicit-fallthrough=] if (!(packet->count)) ^ util/intel-pt-decoder/intel-pt-pkt-decoder.c:501:2: note: here case INTEL_PT_CYC: ^~~~ CC /tmp/build/perf/util/intel-pt-decoder/intel-pt-decoder.o cc1: all warnings being treated as errors Acked-by: Andi Kleen Cc: Adrian Hunter Cc: Alexander Shishkin Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-mf0hw789pu9x855us5l32c83@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf intel-pt: Fix ip compression

2016-08-12T17:39:48Z

The June 2015 Intel SDM introduced IP Compression types 4 and 6. Refer to section 36.4.2.2 Target IP (TIP) Packet - IP Compression. Existing Intel PT packet decoder did not support type 4, and got type 6 wrong. Because type 3 and type 4 have the same number of bytes, the packet 'count' has been changed from being the number of ip bytes to being the type code. That allows the Intel PT decoder to correctly decide whether to sign-extend or use the last ip. However that also meant the code had to be adjusted in a number of places. Currently hardware is not using the new compression types, so this fix has no effect on existing hardware. Signed-off-by: Adrian Hunter Cc: Jiri Olsa Link: http://lkml.kernel.org/r/1469005206-3049-1-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Add new Intel PT packet definitions

2015-08-24T20:46:06Z

New features have been added to Intel PT which include a number of new packet definitions. This patch adds packet definitions for new packets: TMA, MTC, CYC, VMCS, TRACESTOP and MNT. Also another bit in PIP is defined. This patch only adds support for the definitions. Later patches add support for decoding TMA, MTC, CYC and TRACESTOP which is where those packets are explained. VMCS and the newly defined bit in PIP are used with virtualization which is not supported yet. MNT is a maintenance packet which the decoder should ignore. For details, refer to the June 2015 or later Intel 64 and IA-32 Architectures SDM Chapter 36 Intel Processor Trace. Signed-off-by: Adrian Hunter Cc: Jiri Olsa Link: http://lkml.kernel.org/r/1437150840-31811-19-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Add Intel PT packet decoder

2015-08-17T14:11:36Z

Add support for decoding Intel Processor Trace packets. This essentially provides intel_pt_get_packet() which takes a buffer of binary data and returns the decoded packet. Signed-off-by: Adrian Hunter Cc: Jiri Olsa Link: http://lkml.kernel.org/r/1437150840-31811-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo