From 2e73f00fe707a8f2476d989de946c12078c7c066 Mon Sep 17 00:00:00 2001 From: David Ahern Date: Mon, 5 Aug 2013 21:41:37 -0400 Subject: perf kvm stat report: Add option to analyze specific VM Add an option to analyze a specific VM within a data file. This allows the collection of kvm events for all VMs and then analyze data for each VM (or set of VMs) individually. Signed-off-by: David Ahern Reviewed-by: Xiao Guangrong Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Runzhen Wang Cc: Xiao Guangrong Link: http://lkml.kernel.org/r/1375753297-69645-6-git-send-email-dsahern@gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-kvm.c | 38 ++++++++++++++++++++++++++++++++++++-- 1 file changed, 36 insertions(+), 2 deletions(-) (limited to 'tools/perf') diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c index b6595e932a7f..2ceec817a2fb 100644 --- a/tools/perf/builtin-kvm.c +++ b/tools/perf/builtin-kvm.c @@ -9,7 +9,7 @@ #include "util/thread.h" #include "util/header.h" #include "util/session.h" - +#include "util/intlist.h" #include "util/parse-options.h" #include "util/trace-event.h" #include "util/debug.h" @@ -107,6 +107,9 @@ struct perf_kvm_stat { u64 total_count; u64 lost_events; + const char *pid_str; + struct intlist *pid_list; + struct rb_root result; int timerfd; @@ -777,16 +780,29 @@ static int process_lost_event(struct perf_tool *tool, return 0; } +static bool skip_sample(struct perf_kvm_stat *kvm, + struct perf_sample *sample) +{ + if (kvm->pid_list && intlist__find(kvm->pid_list, sample->pid) == NULL) + return true; + + return false; +} + static int process_sample_event(struct perf_tool *tool, union perf_event *event, struct perf_sample *sample, struct perf_evsel *evsel, struct machine *machine) { - struct thread *thread = machine__findnew_thread(machine, sample->tid); + struct thread *thread; struct perf_kvm_stat *kvm = container_of(tool, struct perf_kvm_stat, tool); + if (skip_sample(kvm, sample)) + return 0; + + thread = machine__findnew_thread(machine, sample->tid); if (thread == NULL) { pr_debug("problem processing %d event, skipping it.\n", event->header.type); @@ -1209,11 +1225,27 @@ static int read_events(struct perf_kvm_stat *kvm) return perf_session__process_events(kvm->session, &kvm->tool); } +static int parse_target_str(struct perf_kvm_stat *kvm) +{ + if (kvm->pid_str) { + kvm->pid_list = intlist__new(kvm->pid_str); + if (kvm->pid_list == NULL) { + pr_err("Error parsing process id string\n"); + return -EINVAL; + } + } + + return 0; +} + static int kvm_events_report_vcpu(struct perf_kvm_stat *kvm) { int ret = -EINVAL; int vcpu = kvm->trace_vcpu; + if (parse_target_str(kvm) != 0) + goto exit; + if (!verify_vcpu(vcpu)) goto exit; @@ -1300,6 +1332,8 @@ kvm_events_report(struct perf_kvm_stat *kvm, int argc, const char **argv) OPT_STRING('k', "key", &kvm->sort_key, "sort-key", "key for sorting: sample(sort by samples number)" " time (sort by avg time)"), + OPT_STRING('p', "pid", &kvm->pid_str, "pid", + "analyze events only for given process id(s)"), OPT_END() }; -- cgit v1.2.3