xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

perf tools: Fix Intel PT 'instructions' sample period

Browse Source 
The period on synthesized 'instructions' samples was being set to a
fixed value, whereas the correct value is the number of instructions
since the last sample, which is a value that the decoder can provide.
So do it that way.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/1437150840-31811-14-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Adrian Hunter
2015-07-17 19:33:48 +03:00
committed by Arnaldo Carvalho de Melo
parent 5c9ce1e644
commit 2a21d03686
3 changed files with 8 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
tools/perf/util/intel-pt-decoder/intel-pt-decoder.c
View File

@@ -108,6 +108,7 @@ struct intel_pt_decoder {
uint64_t sign_bits;
uint64_t period;
enum intel_pt_period_type period_type;
uint64_t tot_insn_cnt;
uint64_t period_insn_cnt;
uint64_t period_mask;
uint64_t period_ticks;
@@ -559,6 +560,7 @@ static int intel_pt_walk_insn(struct intel_pt_decoder *decoder,
err = decoder->walk_insn(intel_pt_insn, &insn_cnt, &decoder->ip, ip,
max_insn_cnt, decoder->data);
decoder->tot_insn_cnt += insn_cnt;
decoder->timestamp_insn_cnt += insn_cnt;
decoder->period_insn_cnt += insn_cnt;
@@ -1529,6 +1531,7 @@ const struct intel_pt_state *intel_pt_decode(struct intel_pt_decoder *decoder)
decoder->state.timestamp = decoder->timestamp;
decoder->state.est_timestamp = intel_pt_est_timestamp(decoder);
decoder->state.cr3 = decoder->cr3;
decoder->state.tot_insn_cnt = decoder->tot_insn_cnt;
if (err)
decoder->state.from_ip = decoder->ip;

1
tools/perf/util/intel-pt-decoder/intel-pt-decoder.h
View File

@@ -58,6 +58,7 @@ struct intel_pt_state {
uint64_t from_ip;
uint64_t to_ip;
uint64_t cr3;
uint64_t tot_insn_cnt;
uint64_t timestamp;
uint64_t est_timestamp;
uint64_t trace_nr;