From 3ea223adcb0c5893a6dc8ed3a84dce264cbb61d6 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Tue, 29 Mar 2016 18:46:04 -0300 Subject: [PATCH] perf tools: Add missing initialization of perf_sample.cpumode in synthesized samples In 473398a21d28 ("perf tools: Add cpumode to struct perf_sample"), I missed some places where perf_sample fields are directly initialized in addition to what is done in perf_evsel__parse_sample(), namely when synthesizing PERF_RECORD_{MMAP*,COMM,FORK,EXIT} for pre-existing threads and also in intel_pt and intel_bts when synthesizing events from processor trace, the jitdump code also was affected, fix it. The problem was noticed with running: # perf record -e intel_pt//u true # perf script Where the samples wouldn't get resolved because perf_sample.cpumode would be left as zero, i.e. PERF_RECORD_MISC_CPUMODE_UNKNOWN, not resolving as kernel, hypervisor or user cpu modes. Cc: Alexander Shishkin Cc: Andi Kleen Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Thomas Gleixner Fixes: 473398a21d28 ("perf tools: Add cpumode to struct perf_sample") Link: http://lkml.kernel.org/n/tip-n5sdauxgk24d5nun8kuuu2mh@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/event.c | 23 ++++++++++++++++------- tools/perf/util/intel-bts.c | 1 + tools/perf/util/intel-pt.c | 3 +++ tools/perf/util/jitdump.c | 2 ++ 4 files changed, 22 insertions(+), 7 deletions(-) diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c index 52cf479..dad55d0 100644 --- a/tools/perf/util/event.c +++ b/tools/perf/util/event.c @@ -56,13 +56,22 @@ const char *perf_event__name(unsigned int id) return perf_event__names[id]; } -static struct perf_sample synth_sample = { +static int perf_tool__process_synth_event(struct perf_tool *tool, + union perf_event *event, + struct machine *machine, + perf_event__handler_t process) +{ + struct perf_sample synth_sample = { .pid = -1, .tid = -1, .time = -1, .stream_id = -1, .cpu = -1, .period = 1, + .cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK, + }; + + return process(tool, event, &synth_sample, machine); }; /* @@ -186,7 +195,7 @@ pid_t perf_event__synthesize_comm(struct perf_tool *tool, if (perf_event__prepare_comm(event, pid, machine, &tgid, &ppid) != 0) return -1; - if (process(tool, event, &synth_sample, machine) != 0) + if (perf_tool__process_synth_event(tool, event, machine, process) != 0) return -1; return tgid; @@ -218,7 +227,7 @@ static int perf_event__synthesize_fork(struct perf_tool *tool, event->fork.header.size = (sizeof(event->fork) + machine->id_hdr_size); - if (process(tool, event, &synth_sample, machine) != 0) + if (perf_tool__process_synth_event(tool, event, machine, process) != 0) return -1; return 0; @@ -344,7 +353,7 @@ out: event->mmap2.pid = tgid; event->mmap2.tid = pid; - if (process(tool, event, &synth_sample, machine) != 0) { + if (perf_tool__process_synth_event(tool, event, machine, process) != 0) { rc = -1; break; } @@ -402,7 +411,7 @@ int perf_event__synthesize_modules(struct perf_tool *tool, memcpy(event->mmap.filename, pos->dso->long_name, pos->dso->long_name_len + 1); - if (process(tool, event, &synth_sample, machine) != 0) { + if (perf_tool__process_synth_event(tool, event, machine, process) != 0) { rc = -1; break; } @@ -472,7 +481,7 @@ static int __event__synthesize_thread(union perf_event *comm_event, /* * Send the prepared comm event */ - if (process(tool, comm_event, &synth_sample, machine) != 0) + if (perf_tool__process_synth_event(tool, comm_event, machine, process) != 0) break; rc = 0; @@ -701,7 +710,7 @@ int perf_event__synthesize_kernel_mmap(struct perf_tool *tool, event->mmap.len = map->end - event->mmap.start; event->mmap.pid = machine->pid; - err = process(tool, event, &synth_sample, machine); + err = perf_tool__process_synth_event(tool, event, machine, process); free(event); return err; diff --git a/tools/perf/util/intel-bts.c b/tools/perf/util/intel-bts.c index 6bc3ecd..abf1366 100644 --- a/tools/perf/util/intel-bts.c +++ b/tools/perf/util/intel-bts.c @@ -279,6 +279,7 @@ static int intel_bts_synth_branch_sample(struct intel_bts_queue *btsq, event.sample.header.misc = PERF_RECORD_MISC_USER; event.sample.header.size = sizeof(struct perf_event_header); + sample.cpumode = PERF_RECORD_MISC_USER; sample.ip = le64_to_cpu(branch->from); sample.pid = btsq->pid; sample.tid = btsq->tid; diff --git a/tools/perf/util/intel-pt.c b/tools/perf/util/intel-pt.c index 05d8158..407f11b 100644 --- a/tools/perf/util/intel-pt.c +++ b/tools/perf/util/intel-pt.c @@ -979,6 +979,7 @@ static int intel_pt_synth_branch_sample(struct intel_pt_queue *ptq) if (!pt->timeless_decoding) sample.time = tsc_to_perf_time(ptq->timestamp, &pt->tc); + sample.cpumode = PERF_RECORD_MISC_USER; sample.ip = ptq->state->from_ip; sample.pid = ptq->pid; sample.tid = ptq->tid; @@ -1035,6 +1036,7 @@ static int intel_pt_synth_instruction_sample(struct intel_pt_queue *ptq) if (!pt->timeless_decoding) sample.time = tsc_to_perf_time(ptq->timestamp, &pt->tc); + sample.cpumode = PERF_RECORD_MISC_USER; sample.ip = ptq->state->from_ip; sample.pid = ptq->pid; sample.tid = ptq->tid; @@ -1092,6 +1094,7 @@ static int intel_pt_synth_transaction_sample(struct intel_pt_queue *ptq) if (!pt->timeless_decoding) sample.time = tsc_to_perf_time(ptq->timestamp, &pt->tc); + sample.cpumode = PERF_RECORD_MISC_USER; sample.ip = ptq->state->from_ip; sample.pid = ptq->pid; sample.tid = ptq->tid; diff --git a/tools/perf/util/jitdump.c b/tools/perf/util/jitdump.c index cd272cc..ad0c0bb 100644 --- a/tools/perf/util/jitdump.c +++ b/tools/perf/util/jitdump.c @@ -417,6 +417,7 @@ static int jit_repipe_code_load(struct jit_buf_desc *jd, union jr_entry *jr) * use first address as sample address */ memset(&sample, 0, sizeof(sample)); + sample.cpumode = PERF_RECORD_MISC_USER; sample.pid = pid; sample.tid = tid; sample.time = id->time; @@ -505,6 +506,7 @@ static int jit_repipe_code_move(struct jit_buf_desc *jd, union jr_entry *jr) * use first address as sample address */ memset(&sample, 0, sizeof(sample)); + sample.cpumode = PERF_RECORD_MISC_USER; sample.pid = pid; sample.tid = tid; sample.time = id->time; -- 2.7.4