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perf intel-pt: Add lookahead callback

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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>
This commit is contained in:
Adrian Hunter
2019-06-04 16:00:02 +03:00
committed by Arnaldo Carvalho de Melo
parent 4885c90c5e
commit 4d678e9039
2 changed files with 5 additions and 0 deletions
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3
tools/perf/util/intel-pt-decoder/intel-pt-decoder.h
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@@ -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;