diff options
Diffstat (limited to 'tools/perf/builtin-kvm.c')
| -rw-r--r-- | tools/perf/builtin-kvm.c | 1679 |
1 files changed, 1637 insertions, 42 deletions
diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c index 9fc6e0fa3dc..0f1e5a2f6ad 100644 --- a/tools/perf/builtin-kvm.c +++ b/tools/perf/builtin-kvm.c @@ -1,54 +1,1617 @@ #include "builtin.h" #include "perf.h" +#include "util/evsel.h" +#include "util/evlist.h" #include "util/util.h" #include "util/cache.h" #include "util/symbol.h" #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" +#include <api/fs/debugfs.h> +#include "util/tool.h" +#include "util/stat.h" +#include "util/top.h" +#include "util/data.h" #include <sys/prctl.h> +#ifdef HAVE_TIMERFD_SUPPORT +#include <sys/timerfd.h> +#endif +#include <termios.h> #include <semaphore.h> #include <pthread.h> #include <math.h> -static const char *file_name; -static char name_buffer[256]; +#if defined(__i386__) || defined(__x86_64__) +#include <asm/svm.h> +#include <asm/vmx.h> +#include <asm/kvm.h> + +struct event_key { + #define INVALID_KEY (~0ULL) + u64 key; + int info; +}; + +struct kvm_event_stats { + u64 time; + struct stats stats; +}; + +struct kvm_event { + struct list_head hash_entry; + struct rb_node rb; + + struct event_key key; + + struct kvm_event_stats total; + + #define DEFAULT_VCPU_NUM 8 + int max_vcpu; + struct kvm_event_stats *vcpu; +}; + +typedef int (*key_cmp_fun)(struct kvm_event*, struct kvm_event*, int); + +struct kvm_event_key { + const char *name; + key_cmp_fun key; +}; + + +struct perf_kvm_stat; + +struct kvm_events_ops { + bool (*is_begin_event)(struct perf_evsel *evsel, + struct perf_sample *sample, + struct event_key *key); + bool (*is_end_event)(struct perf_evsel *evsel, + struct perf_sample *sample, struct event_key *key); + void (*decode_key)(struct perf_kvm_stat *kvm, struct event_key *key, + char decode[20]); + const char *name; +}; + +struct exit_reasons_table { + unsigned long exit_code; + const char *reason; +}; + +#define EVENTS_BITS 12 +#define EVENTS_CACHE_SIZE (1UL << EVENTS_BITS) + +struct perf_kvm_stat { + struct perf_tool tool; + struct record_opts opts; + struct perf_evlist *evlist; + struct perf_session *session; + + const char *file_name; + const char *report_event; + const char *sort_key; + int trace_vcpu; + + struct exit_reasons_table *exit_reasons; + int exit_reasons_size; + const char *exit_reasons_isa; + + struct kvm_events_ops *events_ops; + key_cmp_fun compare; + struct list_head kvm_events_cache[EVENTS_CACHE_SIZE]; + + u64 total_time; + u64 total_count; + u64 lost_events; + u64 duration; + + const char *pid_str; + struct intlist *pid_list; + + struct rb_root result; + + int timerfd; + unsigned int display_time; + bool live; +}; + + +static void exit_event_get_key(struct perf_evsel *evsel, + struct perf_sample *sample, + struct event_key *key) +{ + key->info = 0; + key->key = perf_evsel__intval(evsel, sample, "exit_reason"); +} + +static bool kvm_exit_event(struct perf_evsel *evsel) +{ + return !strcmp(evsel->name, "kvm:kvm_exit"); +} + +static bool exit_event_begin(struct perf_evsel *evsel, + struct perf_sample *sample, struct event_key *key) +{ + if (kvm_exit_event(evsel)) { + exit_event_get_key(evsel, sample, key); + return true; + } + + return false; +} + +static bool kvm_entry_event(struct perf_evsel *evsel) +{ + return !strcmp(evsel->name, "kvm:kvm_entry"); +} + +static bool exit_event_end(struct perf_evsel *evsel, + struct perf_sample *sample __maybe_unused, + struct event_key *key __maybe_unused) +{ + return kvm_entry_event(evsel); +} + +static struct exit_reasons_table vmx_exit_reasons[] = { + VMX_EXIT_REASONS +}; + +static struct exit_reasons_table svm_exit_reasons[] = { + SVM_EXIT_REASONS +}; + +static const char *get_exit_reason(struct perf_kvm_stat *kvm, u64 exit_code) +{ + int i = kvm->exit_reasons_size; + struct exit_reasons_table *tbl = kvm->exit_reasons; + + while (i--) { + if (tbl->exit_code == exit_code) + return tbl->reason; + tbl++; + } + + pr_err("unknown kvm exit code:%lld on %s\n", + (unsigned long long)exit_code, kvm->exit_reasons_isa); + return "UNKNOWN"; +} + +static void exit_event_decode_key(struct perf_kvm_stat *kvm, + struct event_key *key, + char decode[20]) +{ + const char *exit_reason = get_exit_reason(kvm, key->key); + + scnprintf(decode, 20, "%s", exit_reason); +} + +static struct kvm_events_ops exit_events = { + .is_begin_event = exit_event_begin, + .is_end_event = exit_event_end, + .decode_key = exit_event_decode_key, + .name = "VM-EXIT" +}; + +/* + * For the mmio events, we treat: + * the time of MMIO write: kvm_mmio(KVM_TRACE_MMIO_WRITE...) -> kvm_entry + * the time of MMIO read: kvm_exit -> kvm_mmio(KVM_TRACE_MMIO_READ...). + */ +static void mmio_event_get_key(struct perf_evsel *evsel, struct perf_sample *sample, + struct event_key *key) +{ + key->key = perf_evsel__intval(evsel, sample, "gpa"); + key->info = perf_evsel__intval(evsel, sample, "type"); +} + +#define KVM_TRACE_MMIO_READ_UNSATISFIED 0 +#define KVM_TRACE_MMIO_READ 1 +#define KVM_TRACE_MMIO_WRITE 2 + +static bool mmio_event_begin(struct perf_evsel *evsel, + struct perf_sample *sample, struct event_key *key) +{ + /* MMIO read begin event in kernel. */ + if (kvm_exit_event(evsel)) + return true; + + /* MMIO write begin event in kernel. */ + if (!strcmp(evsel->name, "kvm:kvm_mmio") && + perf_evsel__intval(evsel, sample, "type") == KVM_TRACE_MMIO_WRITE) { + mmio_event_get_key(evsel, sample, key); + return true; + } + + return false; +} + +static bool mmio_event_end(struct perf_evsel *evsel, struct perf_sample *sample, + struct event_key *key) +{ + /* MMIO write end event in kernel. */ + if (kvm_entry_event(evsel)) + return true; + + /* MMIO read end event in kernel.*/ + if (!strcmp(evsel->name, "kvm:kvm_mmio") && + perf_evsel__intval(evsel, sample, "type") == KVM_TRACE_MMIO_READ) { + mmio_event_get_key(evsel, sample, key); + return true; + } + + return false; +} + +static void mmio_event_decode_key(struct perf_kvm_stat *kvm __maybe_unused, + struct event_key *key, + char decode[20]) +{ + scnprintf(decode, 20, "%#lx:%s", (unsigned long)key->key, + key->info == KVM_TRACE_MMIO_WRITE ? "W" : "R"); +} + +static struct kvm_events_ops mmio_events = { + .is_begin_event = mmio_event_begin, + .is_end_event = mmio_event_end, + .decode_key = mmio_event_decode_key, + .name = "MMIO Access" +}; + + /* The time of emulation pio access is from kvm_pio to kvm_entry. */ +static void ioport_event_get_key(struct perf_evsel *evsel, + struct perf_sample *sample, + struct event_key *key) +{ + key->key = perf_evsel__intval(evsel, sample, "port"); + key->info = perf_evsel__intval(evsel, sample, "rw"); +} + +static bool ioport_event_begin(struct perf_evsel *evsel, + struct perf_sample *sample, + struct event_key *key) +{ + if (!strcmp(evsel->name, "kvm:kvm_pio")) { + ioport_event_get_key(evsel, sample, key); + return true; + } + + return false; +} + +static bool ioport_event_end(struct perf_evsel *evsel, + struct perf_sample *sample __maybe_unused, + struct event_key *key __maybe_unused) +{ + return kvm_entry_event(evsel); +} + +static void ioport_event_decode_key(struct perf_kvm_stat *kvm __maybe_unused, + struct event_key *key, + char decode[20]) +{ + scnprintf(decode, 20, "%#llx:%s", (unsigned long long)key->key, + key->info ? "POUT" : "PIN"); +} + +static struct kvm_events_ops ioport_events = { + .is_begin_event = ioport_event_begin, + .is_end_event = ioport_event_end, + .decode_key = ioport_event_decode_key, + .name = "IO Port Access" +}; + +static bool register_kvm_events_ops(struct perf_kvm_stat *kvm) +{ + bool ret = true; + + if (!strcmp(kvm->report_event, "vmexit")) + kvm->events_ops = &exit_events; + else if (!strcmp(kvm->report_event, "mmio")) + kvm->events_ops = &mmio_events; + else if (!strcmp(kvm->report_event, "ioport")) + kvm->events_ops = &ioport_events; + else { + pr_err("Unknown report event:%s\n", kvm->report_event); + ret = false; + } + + return ret; +} + +struct vcpu_event_record { + int vcpu_id; + u64 start_time; + struct kvm_event *last_event; +}; + + +static void init_kvm_event_record(struct perf_kvm_stat *kvm) +{ + unsigned int i; + + for (i = 0; i < EVENTS_CACHE_SIZE; i++) + INIT_LIST_HEAD(&kvm->kvm_events_cache[i]); +} + +#ifdef HAVE_TIMERFD_SUPPORT +static void clear_events_cache_stats(struct list_head *kvm_events_cache) +{ + struct list_head *head; + struct kvm_event *event; + unsigned int i; + int j; + + for (i = 0; i < EVENTS_CACHE_SIZE; i++) { + head = &kvm_events_cache[i]; + list_for_each_entry(event, head, hash_entry) { + /* reset stats for event */ + event->total.time = 0; + init_stats(&event->total.stats); + + for (j = 0; j < event->max_vcpu; ++j) { + event->vcpu[j].time = 0; + init_stats(&event->vcpu[j].stats); + } + } + } +} +#endif + +static int kvm_events_hash_fn(u64 key) +{ + return key & (EVENTS_CACHE_SIZE - 1); +} + +static bool kvm_event_expand(struct kvm_event *event, int vcpu_id) +{ + int old_max_vcpu = event->max_vcpu; + void *prev; + + if (vcpu_id < event->max_vcpu) + return true; + + while (event->max_vcpu <= vcpu_id) + event->max_vcpu += DEFAULT_VCPU_NUM; + + prev = event->vcpu; + event->vcpu = realloc(event->vcpu, + event->max_vcpu * sizeof(*event->vcpu)); + if (!event->vcpu) { + free(prev); + pr_err("Not enough memory\n"); + return false; + } + + memset(event->vcpu + old_max_vcpu, 0, + (event->max_vcpu - old_max_vcpu) * sizeof(*event->vcpu)); + return true; +} + +static struct kvm_event *kvm_alloc_init_event(struct event_key *key) +{ + struct kvm_event *event; + + event = zalloc(sizeof(*event)); + if (!event) { + pr_err("Not enough memory\n"); + return NULL; + } + + event->key = *key; + init_stats(&event->total.stats); + return event; +} + +static struct kvm_event *find_create_kvm_event(struct perf_kvm_stat *kvm, + struct event_key *key) +{ + struct kvm_event *event; + struct list_head *head; + + BUG_ON(key->key == INVALID_KEY); + + head = &kvm->kvm_events_cache[kvm_events_hash_fn(key->key)]; + list_for_each_entry(event, head, hash_entry) { + if (event->key.key == key->key && event->key.info == key->info) + return event; + } + + event = kvm_alloc_init_event(key); + if (!event) + return NULL; + + list_add(&event->hash_entry, head); + return event; +} + +static bool handle_begin_event(struct perf_kvm_stat *kvm, + struct vcpu_event_record *vcpu_record, + struct event_key *key, u64 timestamp) +{ + struct kvm_event *event = NULL; + + if (key->key != INVALID_KEY) + event = find_create_kvm_event(kvm, key); + + vcpu_record->last_event = event; + vcpu_record->start_time = timestamp; + return true; +} + +static void +kvm_update_event_stats(struct kvm_event_stats *kvm_stats, u64 time_diff) +{ + kvm_stats->time += time_diff; + update_stats(&kvm_stats->stats, time_diff); +} + +static double kvm_event_rel_stddev(int vcpu_id, struct kvm_event *event) +{ + struct kvm_event_stats *kvm_stats = &event->total; + + if (vcpu_id != -1) + kvm_stats = &event->vcpu[vcpu_id]; + + return rel_stddev_stats(stddev_stats(&kvm_stats->stats), + avg_stats(&kvm_stats->stats)); +} + +static bool update_kvm_event(struct kvm_event *event, int vcpu_id, + u64 time_diff) +{ + if (vcpu_id == -1) { + kvm_update_event_stats(&event->total, time_diff); + return true; + } + + if (!kvm_event_expand(event, vcpu_id)) + return false; + + kvm_update_event_stats(&event->vcpu[vcpu_id], time_diff); + return true; +} + +static bool handle_end_event(struct perf_kvm_stat *kvm, + struct vcpu_event_record *vcpu_record, + struct event_key *key, + struct perf_sample *sample) +{ + struct kvm_event *event; + u64 time_begin, time_diff; + int vcpu; + + if (kvm->trace_vcpu == -1) + vcpu = -1; + else + vcpu = vcpu_record->vcpu_id; + + event = vcpu_record->last_event; + time_begin = vcpu_record->start_time; + + /* The begin event is not caught. */ + if (!time_begin) + return true; + + /* + * In some case, the 'begin event' only records the start timestamp, + * the actual event is recognized in the 'end event' (e.g. mmio-event). + */ + + /* Both begin and end events did not get the key. */ + if (!event && key->key == INVALID_KEY) + return true; + + if (!event) + event = find_create_kvm_event(kvm, key); + + if (!event) + return false; + + vcpu_record->last_event = NULL; + vcpu_record->start_time = 0; + + /* seems to happen once in a while during live mode */ + if (sample->time < time_begin) { + pr_debug("End time before begin time; skipping event.\n"); + return true; + } + + time_diff = sample->time - time_begin; + + if (kvm->duration && time_diff > kvm->duration) { + char decode[32]; + + kvm->events_ops->decode_key(kvm, &event->key, decode); + if (strcmp(decode, "HLT")) { + pr_info("%" PRIu64 " VM %d, vcpu %d: %s event took %" PRIu64 "usec\n", + sample->time, sample->pid, vcpu_record->vcpu_id, + decode, time_diff/1000); + } + } + + return update_kvm_event(event, vcpu, time_diff); +} + +static +struct vcpu_event_record *per_vcpu_record(struct thread *thread, + struct perf_evsel *evsel, + struct perf_sample *sample) +{ + /* Only kvm_entry records vcpu id. */ + if (!thread->priv && kvm_entry_event(evsel)) { + struct vcpu_event_record *vcpu_record; + + vcpu_record = zalloc(sizeof(*vcpu_record)); + if (!vcpu_record) { + pr_err("%s: Not enough memory\n", __func__); + return NULL; + } + + vcpu_record->vcpu_id = perf_evsel__intval(evsel, sample, "vcpu_id"); + thread->priv = vcpu_record; + } + + return thread->priv; +} + +static bool handle_kvm_event(struct perf_kvm_stat *kvm, + struct thread *thread, + struct perf_evsel *evsel, + struct perf_sample *sample) +{ + struct vcpu_event_record *vcpu_record; + struct event_key key = {.key = INVALID_KEY}; -static const char * const kvm_usage[] = { - "perf kvm [<options>] {top|record|report|diff|buildid-list}", - NULL + vcpu_record = per_vcpu_record(thread, evsel, sample); + if (!vcpu_record) + return true; + + /* only process events for vcpus user cares about */ + if ((kvm->trace_vcpu != -1) && + (kvm->trace_vcpu != vcpu_record->vcpu_id)) + return true; + + if (kvm->events_ops->is_begin_event(evsel, sample, &key)) + return handle_begin_event(kvm, vcpu_record, &key, sample->time); + + if (kvm->events_ops->is_end_event(evsel, sample, &key)) + return handle_end_event(kvm, vcpu_record, &key, sample); + + return true; +} + +#define GET_EVENT_KEY(func, field) \ +static u64 get_event_ ##func(struct kvm_event *event, int vcpu) \ +{ \ + if (vcpu == -1) \ + return event->total.field; \ + \ + if (vcpu >= event->max_vcpu) \ + return 0; \ + \ + return event->vcpu[vcpu].field; \ +} + +#define COMPARE_EVENT_KEY(func, field) \ +GET_EVENT_KEY(func, field) \ +static int compare_kvm_event_ ## func(struct kvm_event *one, \ + struct kvm_event *two, int vcpu)\ +{ \ + return get_event_ ##func(one, vcpu) > \ + get_event_ ##func(two, vcpu); \ +} + +GET_EVENT_KEY(time, time); +COMPARE_EVENT_KEY(count, stats.n); +COMPARE_EVENT_KEY(mean, stats.mean); +GET_EVENT_KEY(max, stats.max); +GET_EVENT_KEY(min, stats.min); + +#define DEF_SORT_NAME_KEY(name, compare_key) \ + { #name, compare_kvm_event_ ## compare_key } + +static struct kvm_event_key keys[] = { + DEF_SORT_NAME_KEY(sample, count), + DEF_SORT_NAME_KEY(time, mean), + { NULL, NULL } }; -static const struct option kvm_options[] = { - OPT_STRING('i', "input", &file_name, "file", - "Input file name"), - OPT_STRING('o', "output", &file_name, "file", - "Output file name"), - OPT_BOOLEAN(0, "guest", &perf_guest, - "Collect guest os data"), - OPT_BOOLEAN(0, "host", &perf_host, - "Collect host os data"), - OPT_STRING(0, "guestmount", &symbol_conf.guestmount, "directory", - "guest mount directory under which every guest os" - " instance has a subdir"), - OPT_STRING(0, "guestvmlinux", &symbol_conf.default_guest_vmlinux_name, - "file", "file saving guest os vmlinux"), - OPT_STRING(0, "guestkallsyms", &symbol_conf.default_guest_kallsyms, - "file", "file saving guest os /proc/kallsyms"), - OPT_STRING(0, "guestmodules", &symbol_conf.default_guest_modules, - "file", "file saving guest os /proc/modules"), - OPT_END() +static bool select_key(struct perf_kvm_stat *kvm) +{ + int i; + + for (i = 0; keys[i].name; i++) { + if (!strcmp(keys[i].name, kvm->sort_key)) { + kvm->compare = keys[i].key; + return true; + } + } + + pr_err("Unknown compare key:%s\n", kvm->sort_key); + return false; +} + +static void insert_to_result(struct rb_root *result, struct kvm_event *event, + key_cmp_fun bigger, int vcpu) +{ + struct rb_node **rb = &result->rb_node; + struct rb_node *parent = NULL; + struct kvm_event *p; + + while (*rb) { + p = container_of(*rb, struct kvm_event, rb); + parent = *rb; + + if (bigger(event, p, vcpu)) + rb = &(*rb)->rb_left; + else + rb = &(*rb)->rb_right; + } + + rb_link_node(&event->rb, parent, rb); + rb_insert_color(&event->rb, result); +} + +static void +update_total_count(struct perf_kvm_stat *kvm, struct kvm_event *event) +{ + int vcpu = kvm->trace_vcpu; + + kvm->total_count += get_event_count(event, vcpu); + kvm->total_time += get_event_time(event, vcpu); +} + +static bool event_is_valid(struct kvm_event *event, int vcpu) +{ + return !!get_event_count(event, vcpu); +} + +static void sort_result(struct perf_kvm_stat *kvm) +{ + unsigned int i; + int vcpu = kvm->trace_vcpu; + struct kvm_event *event; + + for (i = 0; i < EVENTS_CACHE_SIZE; i++) { + list_for_each_entry(event, &kvm->kvm_events_cache[i], hash_entry) { + if (event_is_valid(event, vcpu)) { + update_total_count(kvm, event); + insert_to_result(&kvm->result, event, + kvm->compare, vcpu); + } + } + } +} + +/* returns left most element of result, and erase it */ +static struct kvm_event *pop_from_result(struct rb_root *result) +{ + struct rb_node *node = rb_first(result); + + if (!node) + return NULL; + + rb_erase(node, result); + return container_of(node, struct kvm_event, rb); +} + +static void print_vcpu_info(struct perf_kvm_stat *kvm) +{ + int vcpu = kvm->trace_vcpu; + + pr_info("Analyze events for "); + + if (kvm->live) { + if (kvm->opts.target.system_wide) + pr_info("all VMs, "); + else if (kvm->opts.target.pid) + pr_info("pid(s) %s, ", kvm->opts.target.pid); + else + pr_info("dazed and confused on what is monitored, "); + } + + if (vcpu == -1) + pr_info("all VCPUs:\n\n"); + else + pr_info("VCPU %d:\n\n", vcpu); +} + +static void show_timeofday(void) +{ + char date[64]; + struct timeval tv; + struct tm ltime; + + gettimeofday(&tv, NULL); + if (localtime_r(&tv.tv_sec, <ime)) { + strftime(date, sizeof(date), "%H:%M:%S", <ime); + pr_info("%s.%06ld", date, tv.tv_usec); + } else + pr_info("00:00:00.000000"); + + return; +} + +static void print_result(struct perf_kvm_stat *kvm) +{ + char decode[20]; + struct kvm_event *event; + int vcpu = kvm->trace_vcpu; + + if (kvm->live) { + puts(CONSOLE_CLEAR); + show_timeofday(); + } + + pr_info("\n\n"); + print_vcpu_info(kvm); + pr_info("%20s ", kvm->events_ops->name); + pr_info("%10s ", "Samples"); + pr_info("%9s ", "Samples%"); + + pr_info("%9s ", "Time%"); + pr_info("%10s ", "Min Time"); + pr_info("%10s ", "Max Time"); + pr_info("%16s ", "Avg time"); + pr_info("\n\n"); + + while ((event = pop_from_result(&kvm->result))) { + u64 ecount, etime, max, min; + + ecount = get_event_count(event, vcpu); + etime = get_event_time(event, vcpu); + max = get_event_max(event, vcpu); + min = get_event_min(event, vcpu); + + kvm->events_ops->decode_key(kvm, &event->key, decode); + pr_info("%20s ", decode); + pr_info("%10llu ", (unsigned long long)ecount); + pr_info("%8.2f%% ", (double)ecount / kvm->total_count * 100); + pr_info("%8.2f%% ", (double)etime / kvm->total_time * 100); + pr_info("%8" PRIu64 "us ", min / 1000); + pr_info("%8" PRIu64 "us ", max / 1000); + pr_info("%9.2fus ( +-%7.2f%% )", (double)etime / ecount/1e3, + kvm_event_rel_stddev(vcpu, event)); + pr_info("\n"); + } + + pr_info("\nTotal Samples:%" PRIu64 ", Total events handled time:%.2fus.\n\n", + kvm->total_count, kvm->total_time / 1e3); + + if (kvm->lost_events) + pr_info("\nLost events: %" PRIu64 "\n\n", kvm->lost_events); +} + +#ifdef HAVE_TIMERFD_SUPPORT +static int process_lost_event(struct perf_tool *tool, + union perf_event *event __maybe_unused, + struct perf_sample *sample __maybe_unused, + struct machine *machine __maybe_unused) +{ + struct perf_kvm_stat *kvm = container_of(tool, struct perf_kvm_stat, tool); + + kvm->lost_events++; + return 0; +} +#endif + +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; + 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->pid, sample->tid); + if (thread == NULL) { + pr_debug("problem processing %d event, skipping it.\n", + event->header.type); + return -1; + } + + if (!handle_kvm_event(kvm, thread, evsel, sample)) + return -1; + + return 0; +} + +static int cpu_isa_config(struct perf_kvm_stat *kvm) +{ + char buf[64], *cpuid; + int err, isa; + + if (kvm->live) { + err = get_cpuid(buf, sizeof(buf)); + if (err != 0) { + pr_err("Failed to look up CPU type (Intel or AMD)\n"); + return err; + } + cpuid = buf; + } else + cpuid = kvm->session->header.env.cpuid; + + if (strstr(cpuid, "Intel")) + isa = 1; + else if (strstr(cpuid, "AMD")) + isa = 0; + else { + pr_err("CPU %s is not supported.\n", cpuid); + return -ENOTSUP; + } + + if (isa == 1) { + kvm->exit_reasons = vmx_exit_reasons; + kvm->exit_reasons_size = ARRAY_SIZE(vmx_exit_reasons); + kvm->exit_reasons_isa = "VMX"; + } + + return 0; +} + +static bool verify_vcpu(int vcpu) +{ + if (vcpu != -1 && vcpu < 0) { + pr_err("Invalid vcpu:%d.\n", vcpu); + return false; + } + + return true; +} + +#ifdef HAVE_TIMERFD_SUPPORT +/* keeping the max events to a modest level to keep + * the processing of samples per mmap smooth. + */ +#define PERF_KVM__MAX_EVENTS_PER_MMAP 25 + +static s64 perf_kvm__mmap_read_idx(struct perf_kvm_stat *kvm, int idx, + u64 *mmap_time) +{ + union perf_event *event; + struct perf_sample sample; + s64 n = 0; + int err; + + *mmap_time = ULLONG_MAX; + while ((event = perf_evlist__mmap_read(kvm->evlist, idx)) != NULL) { + err = perf_evlist__parse_sample(kvm->evlist, event, &sample); + if (err) { + perf_evlist__mmap_consume(kvm->evlist, idx); + pr_err("Failed to parse sample\n"); + return -1; + } + + err = perf_session_queue_event(kvm->session, event, &sample, 0); + /* + * FIXME: Here we can't consume the event, as perf_session_queue_event will + * point to it, and it'll get possibly overwritten by the kernel. + */ + perf_evlist__mmap_consume(kvm->evlist, idx); + + if (err) { + pr_err("Failed to enqueue sample: %d\n", err); + return -1; + } + + /* save time stamp of our first sample for this mmap */ + if (n == 0) + *mmap_time = sample.time; + + /* limit events per mmap handled all at once */ + n++; + if (n == PERF_KVM__MAX_EVENTS_PER_MMAP) + break; + } + + return n; +} + +static int perf_kvm__mmap_read(struct perf_kvm_stat *kvm) +{ + int i, err, throttled = 0; + s64 n, ntotal = 0; + u64 flush_time = ULLONG_MAX, mmap_time; + + for (i = 0; i < kvm->evlist->nr_mmaps; i++) { + n = perf_kvm__mmap_read_idx(kvm, i, &mmap_time); + if (n < 0) + return -1; + + /* flush time is going to be the minimum of all the individual + * mmap times. Essentially, we flush all the samples queued up + * from the last pass under our minimal start time -- that leaves + * a very small race for samples to come in with a lower timestamp. + * The ioctl to return the perf_clock timestamp should close the + * race entirely. + */ + if (mmap_time < flush_time) + flush_time = mmap_time; + + ntotal += n; + if (n == PERF_KVM__MAX_EVENTS_PER_MMAP) + throttled = 1; + } + + /* flush queue after each round in which we processed events */ + if (ntotal) { + kvm->session->ordered_samples.next_flush = flush_time; + err = kvm->tool.finished_round(&kvm->tool, NULL, kvm->session); + if (err) { + if (kvm->lost_events) + pr_info("\nLost events: %" PRIu64 "\n\n", + kvm->lost_events); + return err; + } + } + + return throttled; +} + +static volatile int done; + +static void sig_handler(int sig __maybe_unused) +{ + done = 1; +} + +static int perf_kvm__timerfd_create(struct perf_kvm_stat *kvm) +{ + struct itimerspec new_value; + int rc = -1; + + kvm->timerfd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK); + if (kvm->timerfd < 0) { + pr_err("timerfd_create failed\n"); + goto out; + } + + new_value.it_value.tv_sec = kvm->display_time; + new_value.it_value.tv_nsec = 0; + new_value.it_interval.tv_sec = kvm->display_time; + new_value.it_interval.tv_nsec = 0; + + if (timerfd_settime(kvm->timerfd, 0, &new_value, NULL) != 0) { + pr_err("timerfd_settime failed: %d\n", errno); + close(kvm->timerfd); + goto out; + } + + rc = 0; +out: + return rc; +} + +static int perf_kvm__handle_timerfd(struct perf_kvm_stat *kvm) +{ + uint64_t c; + int rc; + + rc = read(kvm->timerfd, &c, sizeof(uint64_t)); + if (rc < 0) { + if (errno == EAGAIN) + return 0; + + pr_err("Failed to read timer fd: %d\n", errno); + return -1; + } + + if (rc != sizeof(uint64_t)) { + pr_err("Error reading timer fd - invalid size returned\n"); + return -1; + } + + if (c != 1) + pr_debug("Missed timer beats: %" PRIu64 "\n", c-1); + + /* update display */ + sort_result(kvm); + print_result(kvm); + + /* reset counts */ + clear_events_cache_stats(kvm->kvm_events_cache); + kvm->total_count = 0; + kvm->total_time = 0; + kvm->lost_events = 0; + + return 0; +} + +static int fd_set_nonblock(int fd) +{ + long arg = 0; + + arg = fcntl(fd, F_GETFL); + if (arg < 0) { + pr_err("Failed to get current flags for fd %d\n", fd); + return -1; + } + + if (fcntl(fd, F_SETFL, arg | O_NONBLOCK) < 0) { + pr_err("Failed to set non-block option on fd %d\n", fd); + return -1; + } + + return 0; +} + +static +int perf_kvm__handle_stdin(struct termios *tc_now, struct termios *tc_save) +{ + int c; + + tcsetattr(0, TCSANOW, tc_now); + c = getc(stdin); + tcsetattr(0, TCSAFLUSH, tc_save); + + if (c == 'q') + return 1; + + return 0; +} + +static int kvm_events_live_report(struct perf_kvm_stat *kvm) +{ + struct pollfd *pollfds = NULL; + int nr_fds, nr_stdin, ret, err = -EINVAL; + struct termios tc, save; + + /* live flag must be set first */ + kvm->live = true; + + ret = cpu_isa_config(kvm); + if (ret < 0) + return ret; + + if (!verify_vcpu(kvm->trace_vcpu) || + !select_key(kvm) || + !register_kvm_events_ops(kvm)) { + goto out; + } + + init_kvm_event_record(kvm); + + tcgetattr(0, &save); + tc = save; + tc.c_lflag &= ~(ICANON | ECHO); + tc.c_cc[VMIN] = 0; + tc.c_cc[VTIME] = 0; + + signal(SIGINT, sig_handler); + signal(SIGTERM, sig_handler); + + /* copy pollfds -- need to add timerfd and stdin */ + nr_fds = kvm->evlist->nr_fds; + pollfds = zalloc(sizeof(struct pollfd) * (nr_fds + 2)); + if (!pollfds) { + err = -ENOMEM; + goto out; + } + memcpy(pollfds, kvm->evlist->pollfd, + sizeof(struct pollfd) * kvm->evlist->nr_fds); + + /* add timer fd */ + if (perf_kvm__timerfd_create(kvm) < 0) { + err = -1; + goto out; + } + + pollfds[nr_fds].fd = kvm->timerfd; + pollfds[nr_fds].events = POLLIN; + nr_fds++; + + pollfds[nr_fds].fd = fileno(stdin); + pollfds[nr_fds].events = POLLIN; + nr_stdin = nr_fds; + nr_fds++; + if (fd_set_nonblock(fileno(stdin)) != 0) + goto out; + + /* everything is good - enable the events and process */ + perf_evlist__enable(kvm->evlist); + + while (!done) { + int rc; + + rc = perf_kvm__mmap_read(kvm); + if (rc < 0) + break; + + err = perf_kvm__handle_timerfd(kvm); + if (err) + goto out; + + if (pollfds[nr_stdin].revents & POLLIN) + done = perf_kvm__handle_stdin(&tc, &save); + + if (!rc && !done) + err = poll(pollfds, nr_fds, 100); + } + + perf_evlist__disable(kvm->evlist); + + if (err == 0) { + sort_result(kvm); + print_result(kvm); + } + +out: + if (kvm->timerfd >= 0) + close(kvm->timerfd); + + free(pollfds); + return err; +} + +static int kvm_live_open_events(struct perf_kvm_stat *kvm) +{ + int err, rc = -1; + struct perf_evsel *pos; + struct perf_evlist *evlist = kvm->evlist; + + perf_evlist__config(evlist, &kvm->opts); + + /* + * Note: exclude_{guest,host} do not apply here. + * This command processes KVM tracepoints from host only + */ + evlist__for_each(evlist, pos) { + struct perf_event_attr *attr = &pos->attr; + + /* make sure these *are* set */ + perf_evsel__set_sample_bit(pos, TID); + perf_evsel__set_sample_bit(pos, TIME); + perf_evsel__set_sample_bit(pos, CPU); + perf_evsel__set_sample_bit(pos, RAW); + /* make sure these are *not*; want as small a sample as possible */ + perf_evsel__reset_sample_bit(pos, PERIOD); + perf_evsel__reset_sample_bit(pos, IP); + perf_evsel__reset_sample_bit(pos, CALLCHAIN); + perf_evsel__reset_sample_bit(pos, ADDR); + perf_evsel__reset_sample_bit(pos, READ); + attr->mmap = 0; + attr->comm = 0; + attr->task = 0; + + attr->sample_period = 1; + + attr->watermark = 0; + attr->wakeup_events = 1000; + + /* will enable all once we are ready */ + attr->disabled = 1; + } + + err = perf_evlist__open(evlist); + if (err < 0) { + printf("Couldn't create the events: %s\n", strerror(errno)); + goto out; + } + + if (perf_evlist__mmap(evlist, kvm->opts.mmap_pages, false) < 0) { + ui__error("Failed to mmap the events: %s\n", strerror(errno)); + perf_evlist__close(evlist); + goto out; + } + + rc = 0; + +out: + return rc; +} +#endif + +static int read_events(struct perf_kvm_stat *kvm) +{ + int ret; + + struct perf_tool eops = { + .sample = process_sample_event, + .comm = perf_event__process_comm, + .ordered_samples = true, + }; + struct perf_data_file file = { + .path = kvm->file_name, + .mode = PERF_DATA_MODE_READ, + }; + + kvm->tool = eops; + kvm->session = perf_session__new(&file, false, &kvm->tool); + if (!kvm->session) { + pr_err("Initializing perf session failed\n"); + return -EINVAL; + } + + if (!perf_session__has_traces(kvm->session, "kvm record")) + return -EINVAL; + + /* + * Do not use 'isa' recorded in kvm_exit tracepoint since it is not + * traced in the old kernel. + */ + ret = cpu_isa_config(kvm); + if (ret < 0) + return ret; + + 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; + + if (!select_key(kvm)) + goto exit; + + if (!register_kvm_events_ops(kvm)) + goto exit; + + init_kvm_event_record(kvm); + setup_pager(); + + ret = read_events(kvm); + if (ret) + goto exit; + + sort_result(kvm); + print_result(kvm); + +exit: + return ret; +} + +static const char * const kvm_events_tp[] = { + "kvm:kvm_entry", + "kvm:kvm_exit", + "kvm:kvm_mmio", + "kvm:kvm_pio", }; -static int __cmd_record(int argc, const char **argv) +#define STRDUP_FAIL_EXIT(s) \ + ({ char *_p; \ + _p = strdup(s); \ + if (!_p) \ + return -ENOMEM; \ + _p; \ + }) + +static int +kvm_events_record(struct perf_kvm_stat *kvm, int argc, const char **argv) +{ + unsigned int rec_argc, i, j; + const char **rec_argv; + const char * const record_args[] = { + "record", + "-R", + "-m", "1024", + "-c", "1", + }; + + rec_argc = ARRAY_SIZE(record_args) + argc + 2 + + 2 * ARRAY_SIZE(kvm_events_tp); + rec_argv = calloc(rec_argc + 1, sizeof(char *)); + + if (rec_argv == NULL) + return -ENOMEM; + + for (i = 0; i < ARRAY_SIZE(record_args); i++) + rec_argv[i] = STRDUP_FAIL_EXIT(record_args[i]); + + for (j = 0; j < ARRAY_SIZE(kvm_events_tp); j++) { + rec_argv[i++] = "-e"; + rec_argv[i++] = STRDUP_FAIL_EXIT(kvm_events_tp[j]); + } + + rec_argv[i++] = STRDUP_FAIL_EXIT("-o"); + rec_argv[i++] = STRDUP_FAIL_EXIT(kvm->file_name); + + for (j = 1; j < (unsigned int)argc; j++, i++) + rec_argv[i] = argv[j]; + + return cmd_record(i, rec_argv, NULL); +} + +static int +kvm_events_report(struct perf_kvm_stat *kvm, int argc, const char **argv) +{ + const struct option kvm_events_report_options[] = { + OPT_STRING(0, "event", &kvm->report_event, "report event", + "event for reporting: vmexit, mmio, ioport"), + OPT_INTEGER(0, "vcpu", &kvm->trace_vcpu, + "vcpu id to report"), + 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() + }; + + const char * const kvm_events_report_usage[] = { + "perf kvm stat report [<options>]", + NULL + }; + + symbol__init(); + + if (argc) { + argc = parse_options(argc, argv, + kvm_events_report_options, + kvm_events_report_usage, 0); + if (argc) + usage_with_options(kvm_events_report_usage, + kvm_events_report_options); + } + + return kvm_events_report_vcpu(kvm); +} + +#ifdef HAVE_TIMERFD_SUPPORT +static struct perf_evlist *kvm_live_event_list(void) +{ + struct perf_evlist *evlist; + char *tp, *name, *sys; + unsigned int j; + int err = -1; + + evlist = perf_evlist__new(); + if (evlist == NULL) + return NULL; + + for (j = 0; j < ARRAY_SIZE(kvm_events_tp); j++) { + + tp = strdup(kvm_events_tp[j]); + if (tp == NULL) + goto out; + + /* split tracepoint into subsystem and name */ + sys = tp; + name = strchr(tp, ':'); + if (name == NULL) { + pr_err("Error parsing %s tracepoint: subsystem delimiter not found\n", + kvm_events_tp[j]); + free(tp); + goto out; + } + *name = '\0'; + name++; + + if (perf_evlist__add_newtp(evlist, sys, name, NULL)) { + pr_err("Failed to add %s tracepoint to the list\n", kvm_events_tp[j]); + free(tp); + goto out; + } + + free(tp); + } + + err = 0; + +out: + if (err) { + perf_evlist__delete(evlist); + evlist = NULL; + } + + return evlist; +} + +static int kvm_events_live(struct perf_kvm_stat *kvm, + int argc, const char **argv) +{ + char errbuf[BUFSIZ]; + int err; + + const struct option live_options[] = { + OPT_STRING('p', "pid", &kvm->opts.target.pid, "pid", + "record events on existing process id"), + OPT_CALLBACK('m', "mmap-pages", &kvm->opts.mmap_pages, "pages", + "number of mmap data pages", + perf_evlist__parse_mmap_pages), + OPT_INCR('v', "verbose", &verbose, + "be more verbose (show counter open errors, etc)"), + OPT_BOOLEAN('a', "all-cpus", &kvm->opts.target.system_wide, + "system-wide collection from all CPUs"), + OPT_UINTEGER('d', "display", &kvm->display_time, + "time in seconds between display updates"), + OPT_STRING(0, "event", &kvm->report_event, "report event", + "event for reporting: vmexit, mmio, ioport"), + OPT_INTEGER(0, "vcpu", &kvm->trace_vcpu, + "vcpu id to report"), + OPT_STRING('k', "key", &kvm->sort_key, "sort-key", + "key for sorting: sample(sort by samples number)" + " time (sort by avg time)"), + OPT_U64(0, "duration", &kvm->duration, + "show events other than HALT that take longer than duration usecs"), + OPT_END() + }; + const char * const live_usage[] = { + "perf kvm stat live [<options>]", + NULL + }; + struct perf_data_file file = { + .mode = PERF_DATA_MODE_WRITE, + }; + + + /* event handling */ + kvm->tool.sample = process_sample_event; + kvm->tool.comm = perf_event__process_comm; + kvm->tool.exit = perf_event__process_exit; + kvm->tool.fork = perf_event__process_fork; + kvm->tool.lost = process_lost_event; + kvm->tool.ordered_samples = true; + perf_tool__fill_defaults(&kvm->tool); + + /* set defaults */ + kvm->display_time = 1; + kvm->opts.user_interval = 1; + kvm->opts.mmap_pages = 512; + kvm->opts.target.uses_mmap = false; + kvm->opts.target.uid_str = NULL; + kvm->opts.target.uid = UINT_MAX; + + symbol__init(); + disable_buildid_cache(); + + use_browser = 0; + setup_browser(false); + + if (argc) { + argc = parse_options(argc, argv, live_options, + live_usage, 0); + if (argc) + usage_with_options(live_usage, live_options); + } + + kvm->duration *= NSEC_PER_USEC; /* convert usec to nsec */ + + /* + * target related setups + */ + err = target__validate(&kvm->opts.target); + if (err) { + target__strerror(&kvm->opts.target, err, errbuf, BUFSIZ); + ui__warning("%s", errbuf); + } + + if (target__none(&kvm->opts.target)) + kvm->opts.target.system_wide = true; + + + /* + * generate the event list + */ + kvm->evlist = kvm_live_event_list(); + if (kvm->evlist == NULL) { + err = -1; + goto out; + } + + symbol_conf.nr_events = kvm->evlist->nr_entries; + + if (perf_evlist__create_maps(kvm->evlist, &kvm->opts.target) < 0) + usage_with_options(live_usage, live_options); + + /* + * perf session + */ + kvm->session = perf_session__new(&file, false, &kvm->tool); + if (kvm->session == NULL) { + err = -ENOMEM; + goto out; + } + kvm->session->evlist = kvm->evlist; + perf_session__set_id_hdr_size(kvm->session); + machine__synthesize_threads(&kvm->session->machines.host, &kvm->opts.target, + kvm->evlist->threads, false); + err = kvm_live_open_events(kvm); + if (err) + goto out; + + err = kvm_events_live_report(kvm); + +out: + exit_browser(0); + + if (kvm->session) + perf_session__delete(kvm->session); + kvm->session = NULL; + if (kvm->evlist) + perf_evlist__delete(kvm->evlist); + + return err; +} +#endif + +static void print_kvm_stat_usage(void) +{ + printf("Usage: perf kvm stat <command>\n\n"); + + printf("# Available commands:\n"); + printf("\trecord: record kvm events\n"); + printf("\treport: report statistical data of kvm events\n"); + printf("\tlive: live reporting of statistical data of kvm events\n"); + + printf("\nOtherwise, it is the alias of 'perf stat':\n"); +} + +static int kvm_cmd_stat(const char *file_name, int argc, const char **argv) +{ + struct perf_kvm_stat kvm = { + .file_name = file_name, + + .trace_vcpu = -1, + .report_event = "vmexit", + .sort_key = "sample", + + .exit_reasons = svm_exit_reasons, + .exit_reasons_size = ARRAY_SIZE(svm_exit_reasons), + .exit_reasons_isa = "SVM", + }; + + if (argc == 1) { + print_kvm_stat_usage(); + goto perf_stat; + } + + if (!strncmp(argv[1], "rec", 3)) + return kvm_events_record(&kvm, argc - 1, argv + 1); + + if (!strncmp(argv[1], "rep", 3)) + return kvm_events_report(&kvm, argc - 1 , argv + 1); + +#ifdef HAVE_TIMERFD_SUPPORT + if (!strncmp(argv[1], "live", 4)) + return kvm_events_live(&kvm, argc - 1 , argv + 1); +#endif + +perf_stat: + return cmd_stat(argc, argv, NULL); +} +#endif + +static int __cmd_record(const char *file_name, int argc, const char **argv) { int rec_argc, i = 0, j; const char **rec_argv; @@ -66,7 +1629,7 @@ static int __cmd_record(int argc, const char **argv) return cmd_record(i, rec_argv, NULL); } -static int __cmd_report(int argc, const char **argv) +static int __cmd_report(const char *file_name, int argc, const char **argv) { int rec_argc, i = 0, j; const char **rec_argv; @@ -84,7 +1647,8 @@ static int __cmd_report(int argc, const char **argv) return cmd_report(i, rec_argv, NULL); } -static int __cmd_buildid_list(int argc, const char **argv) +static int +__cmd_buildid_list(const char *file_name, int argc, const char **argv) { int rec_argc, i = 0, j; const char **rec_argv; @@ -102,13 +1666,41 @@ static int __cmd_buildid_list(int argc, const char **argv) return cmd_buildid_list(i, rec_argv, NULL); } -int cmd_kvm(int argc, const char **argv, const char *prefix __used) +int cmd_kvm(int argc, const char **argv, const char *prefix __maybe_unused) { + const char *file_name = NULL; + const struct option kvm_options[] = { + OPT_STRING('i', "input", &file_name, "file", + "Input file name"), + OPT_STRING('o', "output", &file_name, "file", + "Output file name"), + OPT_BOOLEAN(0, "guest", &perf_guest, + "Collect guest os data"), + OPT_BOOLEAN(0, "host", &perf_host, + "Collect host os data"), + OPT_STRING(0, "guestmount", &symbol_conf.guestmount, "directory", + "guest mount directory under which every guest os" + " instance has a subdir"), + OPT_STRING(0, "guestvmlinux", &symbol_conf.default_guest_vmlinux_name, + "file", "file saving guest os vmlinux"), + OPT_STRING(0, "guestkallsyms", &symbol_conf.default_guest_kallsyms, + "file", "file saving guest os /proc/kallsyms"), + OPT_STRING(0, "guestmodules", &symbol_conf.default_guest_modules, + "file", "file saving guest os /proc/modules"), + OPT_INCR('v', "verbose", &verbose, + "be more verbose (show counter open errors, etc)"), + OPT_END() + }; + + const char *const kvm_subcommands[] = { "top", "record", "report", "diff", + "buildid-list", "stat", NULL }; + const char *kvm_usage[] = { NULL, NULL }; + perf_host = 0; perf_guest = 1; - argc = parse_options(argc, argv, kvm_options, kvm_usage, - PARSE_OPT_STOP_AT_NON_OPTION); + argc = parse_options_subcommand(argc, argv, kvm_options, kvm_subcommands, kvm_usage, + PARSE_OPT_STOP_AT_NON_OPTION); if (!argc) usage_with_options(kvm_usage, kvm_options); @@ -116,25 +1708,28 @@ int cmd_kvm(int argc, const char **argv, const char *prefix __used) perf_guest = 1; if (!file_name) { - if (perf_host && !perf_guest) - sprintf(name_buffer, "perf.data.host"); - else if (!perf_host && perf_guest) - sprintf(name_buffer, "perf.data.guest"); - else - sprintf(name_buffer, "perf.data.kvm"); - file_name = name_buffer; + file_name = get_filename_for_perf_kvm(); + + if (!file_name) { + pr_err("Failed to allocate memory for filename\n"); + return -ENOMEM; + } } if (!strncmp(argv[0], "rec", 3)) - return __cmd_record(argc, argv); + return __cmd_record(file_name, argc, argv); else if (!strncmp(argv[0], "rep", 3)) - return __cmd_report(argc, argv); + return __cmd_report(file_name, argc, argv); else if (!strncmp(argv[0], "diff", 4)) return cmd_diff(argc, argv, NULL); else if (!strncmp(argv[0], "top", 3)) return cmd_top(argc, argv, NULL); else if (!strncmp(argv[0], "buildid-list", 12)) - return __cmd_buildid_list(argc, argv); + return __cmd_buildid_list(file_name, argc, argv); +#if defined(__i386__) || defined(__x86_64__) + else if (!strncmp(argv[0], "stat", 4)) + return kvm_cmd_stat(file_name, argc, argv); +#endif else usage_with_options(kvm_usage, kvm_options); |