Commit-ID: 4d678e9039b075f9418600dc87ec5e61cfb57115 Gitweb: https://git.kernel.org/tip/4d678e9039b075f9418600dc87ec5e61cfb57115 Author: Adrian Hunter <adrian.hun...@intel.com> AuthorDate: Tue, 4 Jun 2019 16:00:02 +0300 Committer: Arnaldo Carvalho de Melo <a...@redhat.com> CommitDate: Mon, 10 Jun 2019 16:20:12 -0300
perf intel-pt: Add lookahead callback Add a callback function to enable the decoder to lookahead at subsequent trace buffers. This will be used to implement a "fast forward" facility which will be needed to support efficient time interval filtering. Signed-off-by: Adrian Hunter <adrian.hun...@intel.com> Cc: Jin Yao <yao....@linux.intel.com> Cc: Jiri Olsa <jo...@redhat.com> Link: http://lkml.kernel.org/r/20190604130017.31207-5-adrian.hun...@intel.com Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com> --- tools/perf/util/intel-pt-decoder/intel-pt-decoder.c | 2 ++ tools/perf/util/intel-pt-decoder/intel-pt-decoder.h | 3 +++ 2 files changed, 5 insertions(+) diff --git a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c index 9eb778f9c911..13123b195083 100644 --- a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c +++ b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c @@ -104,6 +104,7 @@ struct intel_pt_decoder { uint64_t *insn_cnt_ptr, uint64_t *ip, uint64_t to_ip, uint64_t max_insn_cnt, void *data); bool (*pgd_ip)(uint64_t ip, void *data); + int (*lookahead)(void *data, intel_pt_lookahead_cb_t cb, void *cb_data); void *data; struct intel_pt_state state; const unsigned char *buf; @@ -233,6 +234,7 @@ struct intel_pt_decoder *intel_pt_decoder_new(struct intel_pt_params *params) decoder->get_trace = params->get_trace; decoder->walk_insn = params->walk_insn; decoder->pgd_ip = params->pgd_ip; + decoder->lookahead = params->lookahead; decoder->data = params->data; decoder->return_compression = params->return_compression; decoder->branch_enable = params->branch_enable; diff --git a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.h b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.h index 6a61773dc44b..de36254c6ac9 100644 --- a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.h +++ b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.h @@ -102,12 +102,15 @@ struct intel_pt_buffer { uint64_t trace_nr; }; +typedef int (*intel_pt_lookahead_cb_t)(struct intel_pt_buffer *, void *); + struct intel_pt_params { int (*get_trace)(struct intel_pt_buffer *buffer, void *data); int (*walk_insn)(struct intel_pt_insn *intel_pt_insn, uint64_t *insn_cnt_ptr, uint64_t *ip, uint64_t to_ip, uint64_t max_insn_cnt, void *data); bool (*pgd_ip)(uint64_t ip, void *data); + int (*lookahead)(void *data, intel_pt_lookahead_cb_t cb, void *cb_data); void *data; bool return_compression; bool branch_enable;
