perf intel-pt: Factor out common code synthesizing event samples
Factor out common code in functions synthesizing event samples i.e. intel_pt_synth_branch_sample(), intel_pt_synth_instruction_sample() and intel_pt_synth_transaction_sample(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-27-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Adrian Hunter
Arnaldo Carvalho de Melo
parent
65c5e18f9d
commit
0f3e53799c
@ -1058,6 +1058,36 @@ static void intel_pt_update_last_branch_rb(struct intel_pt_queue *ptq)
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bs->nr += 1;
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}
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static inline bool intel_pt_skip_event(struct intel_pt *pt)
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{
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return pt->synth_opts.initial_skip &&
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pt->num_events++ < pt->synth_opts.initial_skip;
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}
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static void intel_pt_prep_b_sample(struct intel_pt *pt,
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struct intel_pt_queue *ptq,
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union perf_event *event,
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struct perf_sample *sample)
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{
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event->sample.header.type = PERF_RECORD_SAMPLE;
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event->sample.header.misc = PERF_RECORD_MISC_USER;
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event->sample.header.size = sizeof(struct perf_event_header);
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if (!pt->timeless_decoding)
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sample->time = tsc_to_perf_time(ptq->timestamp, &pt->tc);
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sample->cpumode = PERF_RECORD_MISC_USER;
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sample->ip = ptq->state->from_ip;
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sample->pid = ptq->pid;
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sample->tid = ptq->tid;
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sample->addr = ptq->state->to_ip;
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sample->period = 1;
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sample->cpu = ptq->cpu;
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sample->flags = ptq->flags;
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sample->insn_len = ptq->insn_len;
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memcpy(sample->insn, ptq->insn, INTEL_PT_INSN_BUF_SZ);
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}
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static int intel_pt_inject_event(union perf_event *event,
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struct perf_sample *sample, u64 type,
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bool swapped)
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@ -1066,9 +1096,35 @@ static int intel_pt_inject_event(union perf_event *event,
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return perf_event__synthesize_sample(event, type, 0, sample, swapped);
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}
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static int intel_pt_synth_branch_sample(struct intel_pt_queue *ptq)
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static inline int intel_pt_opt_inject(struct intel_pt *pt,
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union perf_event *event,
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struct perf_sample *sample, u64 type)
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{
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if (!pt->synth_opts.inject)
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return 0;
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return intel_pt_inject_event(event, sample, type, pt->synth_needs_swap);
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}
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static int intel_pt_deliver_synth_b_event(struct intel_pt *pt,
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union perf_event *event,
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struct perf_sample *sample, u64 type)
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{
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int ret;
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ret = intel_pt_opt_inject(pt, event, sample, type);
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if (ret)
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return ret;
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ret = perf_session__deliver_synth_event(pt->session, event, sample);
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if (ret)
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pr_err("Intel PT: failed to deliver event, error %d\n", ret);
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return ret;
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}
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static int intel_pt_synth_branch_sample(struct intel_pt_queue *ptq)
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{
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struct intel_pt *pt = ptq->pt;
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union perf_event *event = ptq->event_buf;
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struct perf_sample sample = { .ip = 0, };
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@ -1080,29 +1136,13 @@ static int intel_pt_synth_branch_sample(struct intel_pt_queue *ptq)
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if (pt->branches_filter && !(pt->branches_filter & ptq->flags))
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return 0;
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if (pt->synth_opts.initial_skip &&
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pt->num_events++ < pt->synth_opts.initial_skip)
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if (intel_pt_skip_event(pt))
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return 0;
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event->sample.header.type = PERF_RECORD_SAMPLE;
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event->sample.header.misc = PERF_RECORD_MISC_USER;
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event->sample.header.size = sizeof(struct perf_event_header);
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intel_pt_prep_b_sample(pt, ptq, event, &sample);
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if (!pt->timeless_decoding)
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sample.time = tsc_to_perf_time(ptq->timestamp, &pt->tc);
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sample.cpumode = PERF_RECORD_MISC_USER;
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sample.ip = ptq->state->from_ip;
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sample.pid = ptq->pid;
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sample.tid = ptq->tid;
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sample.addr = ptq->state->to_ip;
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sample.id = ptq->pt->branches_id;
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sample.stream_id = ptq->pt->branches_id;
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sample.period = 1;
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sample.cpu = ptq->cpu;
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sample.flags = ptq->flags;
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sample.insn_len = ptq->insn_len;
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memcpy(sample.insn, ptq->insn, INTEL_PT_INSN_BUF_SZ);
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/*
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* perf report cannot handle events without a branch stack when using
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@ -1119,144 +1159,82 @@ static int intel_pt_synth_branch_sample(struct intel_pt_queue *ptq)
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sample.branch_stack = (struct branch_stack *)&dummy_bs;
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}
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if (pt->synth_opts.inject) {
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ret = intel_pt_inject_event(event, &sample,
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pt->branches_sample_type,
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pt->synth_needs_swap);
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if (ret)
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return ret;
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return intel_pt_deliver_synth_b_event(pt, event, &sample,
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pt->branches_sample_type);
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}
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static void intel_pt_prep_sample(struct intel_pt *pt,
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struct intel_pt_queue *ptq,
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union perf_event *event,
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struct perf_sample *sample)
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{
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intel_pt_prep_b_sample(pt, ptq, event, sample);
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if (pt->synth_opts.callchain) {
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thread_stack__sample(ptq->thread, ptq->chain,
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pt->synth_opts.callchain_sz, sample->ip);
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sample->callchain = ptq->chain;
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}
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ret = perf_session__deliver_synth_event(pt->session, event, &sample);
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if (ret)
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pr_err("Intel Processor Trace: failed to deliver branch event, error %d\n",
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ret);
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if (pt->synth_opts.last_branch) {
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intel_pt_copy_last_branch_rb(ptq);
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sample->branch_stack = ptq->last_branch;
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}
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}
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static inline int intel_pt_deliver_synth_event(struct intel_pt *pt,
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struct intel_pt_queue *ptq,
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union perf_event *event,
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struct perf_sample *sample,
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u64 type)
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{
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int ret;
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ret = intel_pt_deliver_synth_b_event(pt, event, sample, type);
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if (pt->synth_opts.last_branch)
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intel_pt_reset_last_branch_rb(ptq);
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return ret;
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}
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static int intel_pt_synth_instruction_sample(struct intel_pt_queue *ptq)
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{
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int ret;
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struct intel_pt *pt = ptq->pt;
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union perf_event *event = ptq->event_buf;
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struct perf_sample sample = { .ip = 0, };
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if (pt->synth_opts.initial_skip &&
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pt->num_events++ < pt->synth_opts.initial_skip)
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if (intel_pt_skip_event(pt))
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return 0;
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event->sample.header.type = PERF_RECORD_SAMPLE;
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event->sample.header.misc = PERF_RECORD_MISC_USER;
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event->sample.header.size = sizeof(struct perf_event_header);
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intel_pt_prep_sample(pt, ptq, event, &sample);
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if (!pt->timeless_decoding)
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sample.time = tsc_to_perf_time(ptq->timestamp, &pt->tc);
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sample.cpumode = PERF_RECORD_MISC_USER;
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sample.ip = ptq->state->from_ip;
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sample.pid = ptq->pid;
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sample.tid = ptq->tid;
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sample.addr = ptq->state->to_ip;
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sample.id = ptq->pt->instructions_id;
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sample.stream_id = ptq->pt->instructions_id;
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sample.period = ptq->state->tot_insn_cnt - ptq->last_insn_cnt;
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sample.cpu = ptq->cpu;
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sample.flags = ptq->flags;
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sample.insn_len = ptq->insn_len;
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memcpy(sample.insn, ptq->insn, INTEL_PT_INSN_BUF_SZ);
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ptq->last_insn_cnt = ptq->state->tot_insn_cnt;
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if (pt->synth_opts.callchain) {
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thread_stack__sample(ptq->thread, ptq->chain,
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pt->synth_opts.callchain_sz, sample.ip);
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sample.callchain = ptq->chain;
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}
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if (pt->synth_opts.last_branch) {
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intel_pt_copy_last_branch_rb(ptq);
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sample.branch_stack = ptq->last_branch;
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}
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if (pt->synth_opts.inject) {
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ret = intel_pt_inject_event(event, &sample,
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pt->instructions_sample_type,
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pt->synth_needs_swap);
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if (ret)
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return ret;
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}
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ret = perf_session__deliver_synth_event(pt->session, event, &sample);
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if (ret)
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pr_err("Intel Processor Trace: failed to deliver instruction event, error %d\n",
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ret);
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if (pt->synth_opts.last_branch)
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intel_pt_reset_last_branch_rb(ptq);
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return ret;
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return intel_pt_deliver_synth_event(pt, ptq, event, &sample,
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pt->instructions_sample_type);
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}
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static int intel_pt_synth_transaction_sample(struct intel_pt_queue *ptq)
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{
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int ret;
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struct intel_pt *pt = ptq->pt;
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union perf_event *event = ptq->event_buf;
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struct perf_sample sample = { .ip = 0, };
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if (pt->synth_opts.initial_skip &&
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pt->num_events++ < pt->synth_opts.initial_skip)
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if (intel_pt_skip_event(pt))
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return 0;
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event->sample.header.type = PERF_RECORD_SAMPLE;
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event->sample.header.misc = PERF_RECORD_MISC_USER;
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event->sample.header.size = sizeof(struct perf_event_header);
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intel_pt_prep_sample(pt, ptq, event, &sample);
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if (!pt->timeless_decoding)
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sample.time = tsc_to_perf_time(ptq->timestamp, &pt->tc);
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sample.cpumode = PERF_RECORD_MISC_USER;
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sample.ip = ptq->state->from_ip;
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sample.pid = ptq->pid;
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sample.tid = ptq->tid;
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sample.addr = ptq->state->to_ip;
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sample.id = ptq->pt->transactions_id;
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sample.stream_id = ptq->pt->transactions_id;
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sample.period = 1;
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sample.cpu = ptq->cpu;
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sample.flags = ptq->flags;
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sample.insn_len = ptq->insn_len;
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memcpy(sample.insn, ptq->insn, INTEL_PT_INSN_BUF_SZ);
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if (pt->synth_opts.callchain) {
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thread_stack__sample(ptq->thread, ptq->chain,
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pt->synth_opts.callchain_sz, sample.ip);
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sample.callchain = ptq->chain;
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}
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if (pt->synth_opts.last_branch) {
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intel_pt_copy_last_branch_rb(ptq);
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sample.branch_stack = ptq->last_branch;
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}
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if (pt->synth_opts.inject) {
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ret = intel_pt_inject_event(event, &sample,
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pt->transactions_sample_type,
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pt->synth_needs_swap);
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if (ret)
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return ret;
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}
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ret = perf_session__deliver_synth_event(pt->session, event, &sample);
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if (ret)
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pr_err("Intel Processor Trace: failed to deliver transaction event, error %d\n",
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ret);
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if (pt->synth_opts.last_branch)
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intel_pt_reset_last_branch_rb(ptq);
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return ret;
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return intel_pt_deliver_synth_event(pt, ptq, event, &sample,
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pt->transactions_sample_type);
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}
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static int intel_pt_synth_error(struct intel_pt *pt, int code, int cpu,
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