diff options
| author | Adrian Hunter <adrian.hunter@intel.com> | 2019-06-04 16:00:02 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-06-10 16:20:12 -0300 |
| commit | 4d678e9039b075f9418600dc87ec5e61cfb57115 (patch) | |
| tree | f1c3930b1ddc5d615690b5db1828104b1f0fb1e1 | |
| parent | 4885c90c5e84926cfb083c58d8b6d70d1b1ac7cf (diff) | |
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.hunter@intel.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/20190604130017.31207-5-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rw-r--r-- | tools/perf/util/intel-pt-decoder/intel-pt-decoder.c | 2 | ||||
| -rw-r--r-- | tools/perf/util/intel-pt-decoder/intel-pt-decoder.h | 3 |
2 files changed, 5 insertions, 0 deletions
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; |