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Qi Liu
5e91e57e68
Add support for using 'perf report --dump-raw-trace' to parse PTT packet. Example usage: Output will contain raw PTT data and its textual representation, such as (8DW format): 0 0 0x5810 [0x30]: PERF_RECORD_AUXTRACE size: 0x400000 offset: 0 ref: 0xa5d50c725 idx: 0 tid: -1 cpu: 0 . . ... HISI PTT data: size 4194304 bytes . 00000000: 00 00 00 00 Prefix . 00000004: 08 20 00 60 Header DW0 . 00000008: ff 02 00 01 Header DW1 . 0000000c: 20 08 00 00 Header DW2 . 00000010: 10 e7 44 ab Header DW3 . 00000014: 2a a8 1e 01 Time . 00000020: 00 00 00 00 Prefix . 00000024: 01 00 00 60 Header DW0 . 00000028: 0f 1e 00 01 Header DW1 . 0000002c: 04 00 00 00 Header DW2 . 00000030: 40 00 81 02 Header DW3 . 00000034: ee 02 00 00 Time .... This patch only add basic parsing support according to the definition of the PTT packet described in Documentation/trace/hisi-ptt.rst. And the fields of each packet can be further decoded following the PCIe Spec's definition of TLP packet. Signed-off-by: Qi Liu <[email protected]> Signed-off-by: Yicong Yang <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Bjorn Helgaas <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: James Clark <[email protected]> Cc: John Garry <[email protected]> Cc: Jonathan Cameron <[email protected]> Cc: Leo Yan <[email protected]> Cc: Lorenzo Pieralisi <[email protected]> Cc: Mark Rutland <[email protected]> Cc: Mathieu Poirier <[email protected]> Cc: Mike Leach <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Qi Liu <[email protected]> Cc: Shameerali Kolothum Thodi <[email protected]> Cc: Shaokun Zhang <[email protected]> Cc: Suzuki Poulouse <[email protected]> Cc: Will Deacon <[email protected]> Cc: Zeng Prime <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>