perf intel-pt/bts: Calculate cpumode for synthesized samples
In the absence of a fallback, samples must provide a correct cpumode for the 'ip'. Do that now there is no fallback. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <ak@linux.intel.com> Cc: David S. Miller <davem@davemloft.net> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: stable@vger.kernel.org # 4.19 Link: http://lkml.kernel.org/r/20181031091043.23465-6-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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@ -269,6 +269,13 @@ static int intel_bts_do_fix_overlap(struct auxtrace_queue *queue,
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return 0;
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}
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static inline u8 intel_bts_cpumode(struct intel_bts *bts, uint64_t ip)
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{
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return machine__kernel_ip(bts->machine, ip) ?
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PERF_RECORD_MISC_KERNEL :
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PERF_RECORD_MISC_USER;
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}
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static int intel_bts_synth_branch_sample(struct intel_bts_queue *btsq,
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struct branch *branch)
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{
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@ -281,12 +288,8 @@ static int intel_bts_synth_branch_sample(struct intel_bts_queue *btsq,
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bts->num_events++ <= bts->synth_opts.initial_skip)
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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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sample.cpumode = PERF_RECORD_MISC_USER;
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sample.ip = le64_to_cpu(branch->from);
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sample.cpumode = intel_bts_cpumode(bts, sample.ip);
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sample.pid = btsq->pid;
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sample.tid = btsq->tid;
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sample.addr = le64_to_cpu(branch->to);
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@ -298,6 +301,10 @@ static int intel_bts_synth_branch_sample(struct intel_bts_queue *btsq,
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sample.insn_len = btsq->intel_pt_insn.length;
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memcpy(sample.insn, btsq->intel_pt_insn.buf, INTEL_PT_INSN_BUF_SZ);
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event.sample.header.type = PERF_RECORD_SAMPLE;
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event.sample.header.misc = sample.cpumode;
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event.sample.header.size = sizeof(struct perf_event_header);
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if (bts->synth_opts.inject) {
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event.sample.header.size = bts->branches_event_size;
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ret = perf_event__synthesize_sample(&event,
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@ -407,6 +407,13 @@ intel_pt_cache_lookup(struct dso *dso, struct machine *machine, u64 offset)
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return auxtrace_cache__lookup(dso->auxtrace_cache, offset);
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}
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static inline u8 intel_pt_cpumode(struct intel_pt *pt, uint64_t ip)
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{
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return ip >= pt->kernel_start ?
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PERF_RECORD_MISC_KERNEL :
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PERF_RECORD_MISC_USER;
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}
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static int intel_pt_walk_next_insn(struct intel_pt_insn *intel_pt_insn,
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uint64_t *insn_cnt_ptr, uint64_t *ip,
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uint64_t to_ip, uint64_t max_insn_cnt,
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@ -429,10 +436,7 @@ static int intel_pt_walk_next_insn(struct intel_pt_insn *intel_pt_insn,
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if (to_ip && *ip == to_ip)
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goto out_no_cache;
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if (*ip >= ptq->pt->kernel_start)
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cpumode = PERF_RECORD_MISC_KERNEL;
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else
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cpumode = PERF_RECORD_MISC_USER;
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cpumode = intel_pt_cpumode(ptq->pt, *ip);
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thread = ptq->thread;
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if (!thread) {
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@ -1059,15 +1063,11 @@ static void intel_pt_prep_b_sample(struct intel_pt *pt,
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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->cpumode = intel_pt_cpumode(pt, sample->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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@ -1076,6 +1076,10 @@ static void intel_pt_prep_b_sample(struct intel_pt *pt,
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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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event->sample.header.type = PERF_RECORD_SAMPLE;
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event->sample.header.misc = sample->cpumode;
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event->sample.header.size = sizeof(struct perf_event_header);
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}
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static int intel_pt_inject_event(union perf_event *event,
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