--- /dev/null
+#include <linux/kernel.h>
+#include <traceevent/event-parse.h>
+
+#include <byteswap.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/mman.h>
+
+#include "evlist.h"
+#include "evsel.h"
+#include "session.h"
+#include "tool.h"
+#include "sort.h"
+#include "util.h"
+#include "cpumap.h"
+#include "perf_regs.h"
+#include "asm/bug.h"
+
+static int machines__deliver_event(struct machines *machines,
+ struct perf_evlist *evlist,
+ union perf_event *event,
+ struct perf_sample *sample,
+ struct perf_tool *tool, u64 file_offset);
+
+static int perf_session__open(struct perf_session *session)
+{
+ struct perf_data_file *file = session->file;
+
+ if (perf_session__read_header(session) < 0) {
+ pr_err("incompatible file format (rerun with -v to learn more)");
+ return -1;
+ }
+
+ if (perf_data_file__is_pipe(file))
+ return 0;
+
+ if (!perf_evlist__valid_sample_type(session->evlist)) {
+ pr_err("non matching sample_type");
+ return -1;
+ }
+
+ if (!perf_evlist__valid_sample_id_all(session->evlist)) {
+ pr_err("non matching sample_id_all");
+ return -1;
+ }
+
+ if (!perf_evlist__valid_read_format(session->evlist)) {
+ pr_err("non matching read_format");
+ return -1;
+ }
+
+ return 0;
+}
+
+void perf_session__set_id_hdr_size(struct perf_session *session)
+{
+ u16 id_hdr_size = perf_evlist__id_hdr_size(session->evlist);
+
+ machines__set_id_hdr_size(&session->machines, id_hdr_size);
+}
+
+int perf_session__create_kernel_maps(struct perf_session *session)
+{
+ int ret = machine__create_kernel_maps(&session->machines.host);
+
+ if (ret >= 0)
+ ret = machines__create_guest_kernel_maps(&session->machines);
+ return ret;
+}
+
+static void perf_session__destroy_kernel_maps(struct perf_session *session)
+{
+ machines__destroy_kernel_maps(&session->machines);
+}
+
+static bool perf_session__has_comm_exec(struct perf_session *session)
+{
+ struct perf_evsel *evsel;
+
+ evlist__for_each(session->evlist, evsel) {
+ if (evsel->attr.comm_exec)
+ return true;
+ }
+
+ return false;
+}
+
+static void perf_session__set_comm_exec(struct perf_session *session)
+{
+ bool comm_exec = perf_session__has_comm_exec(session);
+
+ machines__set_comm_exec(&session->machines, comm_exec);
+}
+
+static int ordered_events__deliver_event(struct ordered_events *oe,
+ struct ordered_event *event)
+{
+ struct perf_sample sample;
+ struct perf_session *session = container_of(oe, struct perf_session,
+ ordered_events);
+ int ret = perf_evlist__parse_sample(session->evlist, event->event, &sample);
+
+ if (ret) {
+ pr_err("Can't parse sample, err = %d\n", ret);
+ return ret;
+ }
+
+ return machines__deliver_event(&session->machines, session->evlist, event->event,
+ &sample, session->tool, event->file_offset);
+}
+
+struct perf_session *perf_session__new(struct perf_data_file *file,
+ bool repipe, struct perf_tool *tool)
+{
+ struct perf_session *session = zalloc(sizeof(*session));
+
+ if (!session)
+ goto out;
+
+ session->repipe = repipe;
+ session->tool = tool;
+ machines__init(&session->machines);
+ ordered_events__init(&session->ordered_events, ordered_events__deliver_event);
+
+ if (file) {
+ if (perf_data_file__open(file))
+ goto out_delete;
+
+ session->file = file;
+
+ if (perf_data_file__is_read(file)) {
+ if (perf_session__open(session) < 0)
+ goto out_close;
+
+ perf_session__set_id_hdr_size(session);
+ perf_session__set_comm_exec(session);
+ }
+ }
+
+ if (!file || perf_data_file__is_write(file)) {
+ /*
+ * In O_RDONLY mode this will be performed when reading the
+ * kernel MMAP event, in perf_event__process_mmap().
+ */
+ if (perf_session__create_kernel_maps(session) < 0)
+ pr_warning("Cannot read kernel map\n");
+ }
+
+ if (tool && tool->ordering_requires_timestamps &&
+ tool->ordered_events && !perf_evlist__sample_id_all(session->evlist)) {
+ dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n");
+ tool->ordered_events = false;
+ }
+
+ return session;
+
+ out_close:
+ perf_data_file__close(file);
+ out_delete:
+ perf_session__delete(session);
+ out:
+ return NULL;
+}
+
+static void perf_session__delete_threads(struct perf_session *session)
+{
+ machine__delete_threads(&session->machines.host);
+}
+
+static void perf_session_env__delete(struct perf_session_env *env)
+{
+ zfree(&env->hostname);
+ zfree(&env->os_release);
+ zfree(&env->version);
+ zfree(&env->arch);
+ zfree(&env->cpu_desc);
+ zfree(&env->cpuid);
+
+ zfree(&env->cmdline);
+ zfree(&env->sibling_cores);
+ zfree(&env->sibling_threads);
+ zfree(&env->numa_nodes);
+ zfree(&env->pmu_mappings);
+}
+
+void perf_session__delete(struct perf_session *session)
+{
+ perf_session__destroy_kernel_maps(session);
+ perf_session__delete_threads(session);
+ perf_session_env__delete(&session->header.env);
+ machines__exit(&session->machines);
+ if (session->file)
+ perf_data_file__close(session->file);
+ free(session);
+}
+
+static int process_event_synth_tracing_data_stub(struct perf_tool *tool
+ __maybe_unused,
+ union perf_event *event
+ __maybe_unused,
+ struct perf_session *session
+ __maybe_unused)
+{
+ dump_printf(": unhandled!\n");
+ return 0;
+}
+
+static int process_event_synth_attr_stub(struct perf_tool *tool __maybe_unused,
+ union perf_event *event __maybe_unused,
+ struct perf_evlist **pevlist
+ __maybe_unused)
+{
+ dump_printf(": unhandled!\n");
+ return 0;
+}
+
+static int process_event_sample_stub(struct perf_tool *tool __maybe_unused,
+ union perf_event *event __maybe_unused,
+ struct perf_sample *sample __maybe_unused,
+ struct perf_evsel *evsel __maybe_unused,
+ struct machine *machine __maybe_unused)
+{
+ dump_printf(": unhandled!\n");
+ return 0;
+}
+
+static int process_event_stub(struct perf_tool *tool __maybe_unused,
+ union perf_event *event __maybe_unused,
+ struct perf_sample *sample __maybe_unused,
+ struct machine *machine __maybe_unused)
+{
+ dump_printf(": unhandled!\n");
+ return 0;
+}
+
+static int process_build_id_stub(struct perf_tool *tool __maybe_unused,
+ union perf_event *event __maybe_unused,
+ struct perf_session *session __maybe_unused)
+{
+ dump_printf(": unhandled!\n");
+ return 0;
+}
+
+static int process_finished_round_stub(struct perf_tool *tool __maybe_unused,
+ union perf_event *event __maybe_unused,
+ struct ordered_events *oe __maybe_unused)
+{
+ dump_printf(": unhandled!\n");
+ return 0;
+}
+
+static int process_finished_round(struct perf_tool *tool,
+ union perf_event *event,
+ struct ordered_events *oe);
+
+static int process_id_index_stub(struct perf_tool *tool __maybe_unused,
+ union perf_event *event __maybe_unused,
+ struct perf_session *perf_session
+ __maybe_unused)
+{
+ dump_printf(": unhandled!\n");
+ return 0;
+}
+
+void perf_tool__fill_defaults(struct perf_tool *tool)
+{
+ if (tool->sample == NULL)
+ tool->sample = process_event_sample_stub;
+ if (tool->mmap == NULL)
+ tool->mmap = process_event_stub;
+ if (tool->mmap2 == NULL)
+ tool->mmap2 = process_event_stub;
+ if (tool->comm == NULL)
+ tool->comm = process_event_stub;
+ if (tool->fork == NULL)
+ tool->fork = process_event_stub;
+ if (tool->exit == NULL)
+ tool->exit = process_event_stub;
+ if (tool->lost == NULL)
+ tool->lost = perf_event__process_lost;
+ if (tool->read == NULL)
+ tool->read = process_event_sample_stub;
+ if (tool->throttle == NULL)
+ tool->throttle = process_event_stub;
+ if (tool->unthrottle == NULL)
+ tool->unthrottle = process_event_stub;
+ if (tool->attr == NULL)
+ tool->attr = process_event_synth_attr_stub;
+ if (tool->tracing_data == NULL)
+ tool->tracing_data = process_event_synth_tracing_data_stub;
+ if (tool->build_id == NULL)
+ tool->build_id = process_build_id_stub;
+ if (tool->finished_round == NULL) {
+ if (tool->ordered_events)
+ tool->finished_round = process_finished_round;
+ else
+ tool->finished_round = process_finished_round_stub;
+ }
+ if (tool->id_index == NULL)
+ tool->id_index = process_id_index_stub;
+}
+
+static void swap_sample_id_all(union perf_event *event, void *data)
+{
+ void *end = (void *) event + event->header.size;
+ int size = end - data;
+
+ BUG_ON(size % sizeof(u64));
+ mem_bswap_64(data, size);
+}
+
+static void perf_event__all64_swap(union perf_event *event,
+ bool sample_id_all __maybe_unused)
+{
+ struct perf_event_header *hdr = &event->header;
+ mem_bswap_64(hdr + 1, event->header.size - sizeof(*hdr));
+}
+
+static void perf_event__comm_swap(union perf_event *event, bool sample_id_all)
+{
+ event->comm.pid = bswap_32(event->comm.pid);
+ event->comm.tid = bswap_32(event->comm.tid);
+
+ if (sample_id_all) {
+ void *data = &event->comm.comm;
+
+ data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
+ swap_sample_id_all(event, data);
+ }
+}
+
+static void perf_event__mmap_swap(union perf_event *event,
+ bool sample_id_all)
+{
+ event->mmap.pid = bswap_32(event->mmap.pid);
+ event->mmap.tid = bswap_32(event->mmap.tid);
+ event->mmap.start = bswap_64(event->mmap.start);
+ event->mmap.len = bswap_64(event->mmap.len);
+ event->mmap.pgoff = bswap_64(event->mmap.pgoff);
+
+ if (sample_id_all) {
+ void *data = &event->mmap.filename;
+
+ data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
+ swap_sample_id_all(event, data);
+ }
+}
+
+static void perf_event__mmap2_swap(union perf_event *event,
+ bool sample_id_all)
+{
+ event->mmap2.pid = bswap_32(event->mmap2.pid);
+ event->mmap2.tid = bswap_32(event->mmap2.tid);
+ event->mmap2.start = bswap_64(event->mmap2.start);
+ event->mmap2.len = bswap_64(event->mmap2.len);
+ event->mmap2.pgoff = bswap_64(event->mmap2.pgoff);
+ event->mmap2.maj = bswap_32(event->mmap2.maj);
+ event->mmap2.min = bswap_32(event->mmap2.min);
+ event->mmap2.ino = bswap_64(event->mmap2.ino);
+
+ if (sample_id_all) {
+ void *data = &event->mmap2.filename;
+
+ data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
+ swap_sample_id_all(event, data);
+ }
+}
+static void perf_event__task_swap(union perf_event *event, bool sample_id_all)
+{
+ event->fork.pid = bswap_32(event->fork.pid);
+ event->fork.tid = bswap_32(event->fork.tid);
+ event->fork.ppid = bswap_32(event->fork.ppid);
+ event->fork.ptid = bswap_32(event->fork.ptid);
+ event->fork.time = bswap_64(event->fork.time);
+
+ if (sample_id_all)
+ swap_sample_id_all(event, &event->fork + 1);
+}
+
+static void perf_event__read_swap(union perf_event *event, bool sample_id_all)
+{
+ event->read.pid = bswap_32(event->read.pid);
+ event->read.tid = bswap_32(event->read.tid);
+ event->read.value = bswap_64(event->read.value);
+ event->read.time_enabled = bswap_64(event->read.time_enabled);
+ event->read.time_running = bswap_64(event->read.time_running);
+ event->read.id = bswap_64(event->read.id);
+
+ if (sample_id_all)
+ swap_sample_id_all(event, &event->read + 1);
+}
+
+static void perf_event__throttle_swap(union perf_event *event,
+ bool sample_id_all)
+{
+ event->throttle.time = bswap_64(event->throttle.time);
+ event->throttle.id = bswap_64(event->throttle.id);
+ event->throttle.stream_id = bswap_64(event->throttle.stream_id);
+
+ if (sample_id_all)
+ swap_sample_id_all(event, &event->throttle + 1);
+}
+
+static u8 revbyte(u8 b)
+{
+ int rev = (b >> 4) | ((b & 0xf) << 4);
+ rev = ((rev & 0xcc) >> 2) | ((rev & 0x33) << 2);
+ rev = ((rev & 0xaa) >> 1) | ((rev & 0x55) << 1);
+ return (u8) rev;
+}
+
+/*
+ * XXX this is hack in attempt to carry flags bitfield
+ * throught endian village. ABI says:
+ *
+ * Bit-fields are allocated from right to left (least to most significant)
+ * on little-endian implementations and from left to right (most to least
+ * significant) on big-endian implementations.
+ *
+ * The above seems to be byte specific, so we need to reverse each
+ * byte of the bitfield. 'Internet' also says this might be implementation
+ * specific and we probably need proper fix and carry perf_event_attr
+ * bitfield flags in separate data file FEAT_ section. Thought this seems
+ * to work for now.
+ */
+static void swap_bitfield(u8 *p, unsigned len)
+{
+ unsigned i;
+
+ for (i = 0; i < len; i++) {
+ *p = revbyte(*p);
+ p++;
+ }
+}
+
+/* exported for swapping attributes in file header */
+void perf_event__attr_swap(struct perf_event_attr *attr)
+{
+ attr->type = bswap_32(attr->type);
+ attr->size = bswap_32(attr->size);
+ attr->config = bswap_64(attr->config);
+ attr->sample_period = bswap_64(attr->sample_period);
+ attr->sample_type = bswap_64(attr->sample_type);
+ attr->read_format = bswap_64(attr->read_format);
+ attr->wakeup_events = bswap_32(attr->wakeup_events);
+ attr->bp_type = bswap_32(attr->bp_type);
+ attr->bp_addr = bswap_64(attr->bp_addr);
+ attr->bp_len = bswap_64(attr->bp_len);
+ attr->branch_sample_type = bswap_64(attr->branch_sample_type);
+ attr->sample_regs_user = bswap_64(attr->sample_regs_user);
+ attr->sample_stack_user = bswap_32(attr->sample_stack_user);
+
+ swap_bitfield((u8 *) (&attr->read_format + 1), sizeof(u64));
+}
+
+static void perf_event__hdr_attr_swap(union perf_event *event,
+ bool sample_id_all __maybe_unused)
+{
+ size_t size;
+
+ perf_event__attr_swap(&event->attr.attr);
+
+ size = event->header.size;
+ size -= (void *)&event->attr.id - (void *)event;
+ mem_bswap_64(event->attr.id, size);
+}
+
+static void perf_event__event_type_swap(union perf_event *event,
+ bool sample_id_all __maybe_unused)
+{
+ event->event_type.event_type.event_id =
+ bswap_64(event->event_type.event_type.event_id);
+}
+
+static void perf_event__tracing_data_swap(union perf_event *event,
+ bool sample_id_all __maybe_unused)
+{
+ event->tracing_data.size = bswap_32(event->tracing_data.size);
+}
+
+typedef void (*perf_event__swap_op)(union perf_event *event,
+ bool sample_id_all);
+
+static perf_event__swap_op perf_event__swap_ops[] = {
+ [PERF_RECORD_MMAP] = perf_event__mmap_swap,
+ [PERF_RECORD_MMAP2] = perf_event__mmap2_swap,
+ [PERF_RECORD_COMM] = perf_event__comm_swap,
+ [PERF_RECORD_FORK] = perf_event__task_swap,
+ [PERF_RECORD_EXIT] = perf_event__task_swap,
+ [PERF_RECORD_LOST] = perf_event__all64_swap,
+ [PERF_RECORD_READ] = perf_event__read_swap,
+ [PERF_RECORD_THROTTLE] = perf_event__throttle_swap,
+ [PERF_RECORD_UNTHROTTLE] = perf_event__throttle_swap,
+ [PERF_RECORD_SAMPLE] = perf_event__all64_swap,
+ [PERF_RECORD_HEADER_ATTR] = perf_event__hdr_attr_swap,
+ [PERF_RECORD_HEADER_EVENT_TYPE] = perf_event__event_type_swap,
+ [PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap,
+ [PERF_RECORD_HEADER_BUILD_ID] = NULL,
+ [PERF_RECORD_ID_INDEX] = perf_event__all64_swap,
+ [PERF_RECORD_HEADER_MAX] = NULL,
+};
+
+/*
+ * When perf record finishes a pass on every buffers, it records this pseudo
+ * event.
+ * We record the max timestamp t found in the pass n.
+ * Assuming these timestamps are monotonic across cpus, we know that if
+ * a buffer still has events with timestamps below t, they will be all
+ * available and then read in the pass n + 1.
+ * Hence when we start to read the pass n + 2, we can safely flush every
+ * events with timestamps below t.
+ *
+ * ============ PASS n =================
+ * CPU 0 | CPU 1
+ * |
+ * cnt1 timestamps | cnt2 timestamps
+ * 1 | 2
+ * 2 | 3
+ * - | 4 <--- max recorded
+ *
+ * ============ PASS n + 1 ==============
+ * CPU 0 | CPU 1
+ * |
+ * cnt1 timestamps | cnt2 timestamps
+ * 3 | 5
+ * 4 | 6
+ * 5 | 7 <---- max recorded
+ *
+ * Flush every events below timestamp 4
+ *
+ * ============ PASS n + 2 ==============
+ * CPU 0 | CPU 1
+ * |
+ * cnt1 timestamps | cnt2 timestamps
+ * 6 | 8
+ * 7 | 9
+ * - | 10
+ *
+ * Flush every events below timestamp 7
+ * etc...
+ */
+static int process_finished_round(struct perf_tool *tool __maybe_unused,
+ union perf_event *event __maybe_unused,
+ struct ordered_events *oe)
+{
+ return ordered_events__flush(oe, OE_FLUSH__ROUND);
+}
+
+int perf_session__queue_event(struct perf_session *s, union perf_event *event,
+ struct perf_sample *sample, u64 file_offset)
+{
+ return ordered_events__queue(&s->ordered_events, event, sample, file_offset);
+}
+
+static void callchain__lbr_callstack_printf(struct perf_sample *sample)
+{
+ struct ip_callchain *callchain = sample->callchain;
+ struct branch_stack *lbr_stack = sample->branch_stack;
+ u64 kernel_callchain_nr = callchain->nr;
+ unsigned int i;
+
+ for (i = 0; i < kernel_callchain_nr; i++) {
+ if (callchain->ips[i] == PERF_CONTEXT_USER)
+ break;
+ }
+
+ if ((i != kernel_callchain_nr) && lbr_stack->nr) {
+ u64 total_nr;
+ /*
+ * LBR callstack can only get user call chain,
+ * i is kernel call chain number,
+ * 1 is PERF_CONTEXT_USER.
+ *
+ * The user call chain is stored in LBR registers.
+ * LBR are pair registers. The caller is stored
+ * in "from" register, while the callee is stored
+ * in "to" register.
+ * For example, there is a call stack
+ * "A"->"B"->"C"->"D".
+ * The LBR registers will recorde like
+ * "C"->"D", "B"->"C", "A"->"B".
+ * So only the first "to" register and all "from"
+ * registers are needed to construct the whole stack.
+ */
+ total_nr = i + 1 + lbr_stack->nr + 1;
+ kernel_callchain_nr = i + 1;
+
+ printf("... LBR call chain: nr:%" PRIu64 "\n", total_nr);
+
+ for (i = 0; i < kernel_callchain_nr; i++)
+ printf("..... %2d: %016" PRIx64 "\n",
+ i, callchain->ips[i]);
+
+ printf("..... %2d: %016" PRIx64 "\n",
+ (int)(kernel_callchain_nr), lbr_stack->entries[0].to);
+ for (i = 0; i < lbr_stack->nr; i++)
+ printf("..... %2d: %016" PRIx64 "\n",
+ (int)(i + kernel_callchain_nr + 1), lbr_stack->entries[i].from);
+ }
+}
+
+static void callchain__printf(struct perf_evsel *evsel,
+ struct perf_sample *sample)
+{
+ unsigned int i;
+ struct ip_callchain *callchain = sample->callchain;
+
+ if (has_branch_callstack(evsel))
+ callchain__lbr_callstack_printf(sample);
+
+ printf("... FP chain: nr:%" PRIu64 "\n", callchain->nr);
+
+ for (i = 0; i < callchain->nr; i++)
+ printf("..... %2d: %016" PRIx64 "\n",
+ i, callchain->ips[i]);
+}
+
+static void branch_stack__printf(struct perf_sample *sample)
+{
+ uint64_t i;
+
+ printf("... branch stack: nr:%" PRIu64 "\n", sample->branch_stack->nr);
+
+ for (i = 0; i < sample->branch_stack->nr; i++)
+ printf("..... %2"PRIu64": %016" PRIx64 " -> %016" PRIx64 "\n",
+ i, sample->branch_stack->entries[i].from,
+ sample->branch_stack->entries[i].to);
+}
+
+static void regs_dump__printf(u64 mask, u64 *regs)
+{
+ unsigned rid, i = 0;
+
+ for_each_set_bit(rid, (unsigned long *) &mask, sizeof(mask) * 8) {
+ u64 val = regs[i++];
+
+ printf(".... %-5s 0x%" PRIx64 "\n",
+ perf_reg_name(rid), val);
+ }
+}
+
+static const char *regs_abi[] = {
+ [PERF_SAMPLE_REGS_ABI_NONE] = "none",
+ [PERF_SAMPLE_REGS_ABI_32] = "32-bit",
+ [PERF_SAMPLE_REGS_ABI_64] = "64-bit",
+};
+
+static inline const char *regs_dump_abi(struct regs_dump *d)
+{
+ if (d->abi > PERF_SAMPLE_REGS_ABI_64)
+ return "unknown";
+
+ return regs_abi[d->abi];
+}
+
+static void regs__printf(const char *type, struct regs_dump *regs)
+{
+ u64 mask = regs->mask;
+
+ printf("... %s regs: mask 0x%" PRIx64 " ABI %s\n",
+ type,
+ mask,
+ regs_dump_abi(regs));
+
+ regs_dump__printf(mask, regs->regs);
+}
+
+static void regs_user__printf(struct perf_sample *sample)
+{
+ struct regs_dump *user_regs = &sample->user_regs;
+
+ if (user_regs->regs)
+ regs__printf("user", user_regs);
+}
+
+static void regs_intr__printf(struct perf_sample *sample)
+{
+ struct regs_dump *intr_regs = &sample->intr_regs;
+
+ if (intr_regs->regs)
+ regs__printf("intr", intr_regs);
+}
+
+static void stack_user__printf(struct stack_dump *dump)
+{
+ printf("... ustack: size %" PRIu64 ", offset 0x%x\n",
+ dump->size, dump->offset);
+}
+
+static void perf_evlist__print_tstamp(struct perf_evlist *evlist,
+ union perf_event *event,
+ struct perf_sample *sample)
+{
+ u64 sample_type = __perf_evlist__combined_sample_type(evlist);
+
+ if (event->header.type != PERF_RECORD_SAMPLE &&
+ !perf_evlist__sample_id_all(evlist)) {
+ fputs("-1 -1 ", stdout);
+ return;
+ }
+
+ if ((sample_type & PERF_SAMPLE_CPU))
+ printf("%u ", sample->cpu);
+
+ if (sample_type & PERF_SAMPLE_TIME)
+ printf("%" PRIu64 " ", sample->time);
+}
+
+static void sample_read__printf(struct perf_sample *sample, u64 read_format)
+{
+ printf("... sample_read:\n");
+
+ if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
+ printf("...... time enabled %016" PRIx64 "\n",
+ sample->read.time_enabled);
+
+ if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
+ printf("...... time running %016" PRIx64 "\n",
+ sample->read.time_running);
+
+ if (read_format & PERF_FORMAT_GROUP) {
+ u64 i;
+
+ printf(".... group nr %" PRIu64 "\n", sample->read.group.nr);
+
+ for (i = 0; i < sample->read.group.nr; i++) {
+ struct sample_read_value *value;
+
+ value = &sample->read.group.values[i];
+ printf("..... id %016" PRIx64
+ ", value %016" PRIx64 "\n",
+ value->id, value->value);
+ }
+ } else
+ printf("..... id %016" PRIx64 ", value %016" PRIx64 "\n",
+ sample->read.one.id, sample->read.one.value);
+}
+
+static void dump_event(struct perf_evlist *evlist, union perf_event *event,
+ u64 file_offset, struct perf_sample *sample)
+{
+ if (!dump_trace)
+ return;
+
+ printf("\n%#" PRIx64 " [%#x]: event: %d\n",
+ file_offset, event->header.size, event->header.type);
+
+ trace_event(event);
+
+ if (sample)
+ perf_evlist__print_tstamp(evlist, event, sample);
+
+ printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset,
+ event->header.size, perf_event__name(event->header.type));
+}
+
+static void dump_sample(struct perf_evsel *evsel, union perf_event *event,
+ struct perf_sample *sample)
+{
+ u64 sample_type;
+
+ if (!dump_trace)
+ return;
+
+ printf("(IP, 0x%x): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n",
+ event->header.misc, sample->pid, sample->tid, sample->ip,
+ sample->period, sample->addr);
+
+ sample_type = evsel->attr.sample_type;
+
+ if (sample_type & PERF_SAMPLE_CALLCHAIN)
+ callchain__printf(evsel, sample);
+
+ if ((sample_type & PERF_SAMPLE_BRANCH_STACK) && !has_branch_callstack(evsel))
+ branch_stack__printf(sample);
+
+ if (sample_type & PERF_SAMPLE_REGS_USER)
+ regs_user__printf(sample);
+
+ if (sample_type & PERF_SAMPLE_REGS_INTR)
+ regs_intr__printf(sample);
+
+ if (sample_type & PERF_SAMPLE_STACK_USER)
+ stack_user__printf(&sample->user_stack);
+
+ if (sample_type & PERF_SAMPLE_WEIGHT)
+ printf("... weight: %" PRIu64 "\n", sample->weight);
+
+ if (sample_type & PERF_SAMPLE_DATA_SRC)
+ printf(" . data_src: 0x%"PRIx64"\n", sample->data_src);
+
+ if (sample_type & PERF_SAMPLE_TRANSACTION)
+ printf("... transaction: %" PRIx64 "\n", sample->transaction);
+
+ if (sample_type & PERF_SAMPLE_READ)
+ sample_read__printf(sample, evsel->attr.read_format);
+}
+
+static struct machine *machines__find_for_cpumode(struct machines *machines,
+ union perf_event *event,
+ struct perf_sample *sample)
+{
+ const u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
+ struct machine *machine;
+
+ if (perf_guest &&
+ ((cpumode == PERF_RECORD_MISC_GUEST_KERNEL) ||
+ (cpumode == PERF_RECORD_MISC_GUEST_USER))) {
+ u32 pid;
+
+ if (event->header.type == PERF_RECORD_MMAP
+ || event->header.type == PERF_RECORD_MMAP2)
+ pid = event->mmap.pid;
+ else
+ pid = sample->pid;
+
+ machine = machines__find(machines, pid);
+ if (!machine)
+ machine = machines__find(machines, DEFAULT_GUEST_KERNEL_ID);
+ return machine;
+ }
+
+ return &machines->host;
+}
+
+static int deliver_sample_value(struct perf_evlist *evlist,
+ struct perf_tool *tool,
+ union perf_event *event,
+ struct perf_sample *sample,
+ struct sample_read_value *v,
+ struct machine *machine)
+{
+ struct perf_sample_id *sid = perf_evlist__id2sid(evlist, v->id);
+
+ if (sid) {
+ sample->id = v->id;
+ sample->period = v->value - sid->period;
+ sid->period = v->value;
+ }
+
+ if (!sid || sid->evsel == NULL) {
+ ++evlist->stats.nr_unknown_id;
+ return 0;
+ }
+
+ return tool->sample(tool, event, sample, sid->evsel, machine);
+}
+
+static int deliver_sample_group(struct perf_evlist *evlist,
+ struct perf_tool *tool,
+ union perf_event *event,
+ struct perf_sample *sample,
+ struct machine *machine)
+{
+ int ret = -EINVAL;
+ u64 i;
+
+ for (i = 0; i < sample->read.group.nr; i++) {
+ ret = deliver_sample_value(evlist, tool, event, sample,
+ &sample->read.group.values[i],
+ machine);
+ if (ret)
+ break;
+ }
+
+ return ret;
+}
+
+static int
+ perf_evlist__deliver_sample(struct perf_evlist *evlist,
+ struct perf_tool *tool,
+ union perf_event *event,
+ struct perf_sample *sample,
+ struct perf_evsel *evsel,
+ struct machine *machine)
+{
+ /* We know evsel != NULL. */
+ u64 sample_type = evsel->attr.sample_type;
+ u64 read_format = evsel->attr.read_format;
+
+ /* Standard sample delievery. */
+ if (!(sample_type & PERF_SAMPLE_READ))
+ return tool->sample(tool, event, sample, evsel, machine);
+
+ /* For PERF_SAMPLE_READ we have either single or group mode. */
+ if (read_format & PERF_FORMAT_GROUP)
+ return deliver_sample_group(evlist, tool, event, sample,
+ machine);
+ else
+ return deliver_sample_value(evlist, tool, event, sample,
+ &sample->read.one, machine);
+}
+
+static int machines__deliver_event(struct machines *machines,
+ struct perf_evlist *evlist,
+ union perf_event *event,
+ struct perf_sample *sample,
+ struct perf_tool *tool, u64 file_offset)
+{
+ struct perf_evsel *evsel;
+ struct machine *machine;
+
+ dump_event(evlist, event, file_offset, sample);
+
+ evsel = perf_evlist__id2evsel(evlist, sample->id);
+
+ machine = machines__find_for_cpumode(machines, event, sample);
+
+ switch (event->header.type) {
+ case PERF_RECORD_SAMPLE:
+ dump_sample(evsel, event, sample);
+ if (evsel == NULL) {
+ ++evlist->stats.nr_unknown_id;
+ return 0;
+ }
+ if (machine == NULL) {
+ ++evlist->stats.nr_unprocessable_samples;
+ return 0;
+ }
+ return perf_evlist__deliver_sample(evlist, tool, event, sample, evsel, machine);
+ case PERF_RECORD_MMAP:
+ return tool->mmap(tool, event, sample, machine);
+ case PERF_RECORD_MMAP2:
+ return tool->mmap2(tool, event, sample, machine);
+ case PERF_RECORD_COMM:
+ return tool->comm(tool, event, sample, machine);
+ case PERF_RECORD_FORK:
+ return tool->fork(tool, event, sample, machine);
+ case PERF_RECORD_EXIT:
+ return tool->exit(tool, event, sample, machine);
+ case PERF_RECORD_LOST:
+ if (tool->lost == perf_event__process_lost)
+ evlist->stats.total_lost += event->lost.lost;
+ return tool->lost(tool, event, sample, machine);
+ case PERF_RECORD_READ:
+ return tool->read(tool, event, sample, evsel, machine);
+ case PERF_RECORD_THROTTLE:
+ return tool->throttle(tool, event, sample, machine);
+ case PERF_RECORD_UNTHROTTLE:
+ return tool->unthrottle(tool, event, sample, machine);
+ default:
+ ++evlist->stats.nr_unknown_events;
+ return -1;
+ }
+}
+
+static s64 perf_session__process_user_event(struct perf_session *session,
+ union perf_event *event,
+ u64 file_offset)
+{
+ struct ordered_events *oe = &session->ordered_events;
+ struct perf_tool *tool = session->tool;
+ int fd = perf_data_file__fd(session->file);
+ int err;
+
+ dump_event(session->evlist, event, file_offset, NULL);
+
+ /* These events are processed right away */
+ switch (event->header.type) {
+ case PERF_RECORD_HEADER_ATTR:
+ err = tool->attr(tool, event, &session->evlist);
+ if (err == 0) {
+ perf_session__set_id_hdr_size(session);
+ perf_session__set_comm_exec(session);
+ }
+ return err;
+ case PERF_RECORD_HEADER_EVENT_TYPE:
+ /*
+ * Depreceated, but we need to handle it for sake
+ * of old data files create in pipe mode.
+ */
+ return 0;
+ case PERF_RECORD_HEADER_TRACING_DATA:
+ /* setup for reading amidst mmap */
+ lseek(fd, file_offset, SEEK_SET);
+ return tool->tracing_data(tool, event, session);
+ case PERF_RECORD_HEADER_BUILD_ID:
+ return tool->build_id(tool, event, session);
+ case PERF_RECORD_FINISHED_ROUND:
+ return tool->finished_round(tool, event, oe);
+ case PERF_RECORD_ID_INDEX:
+ return tool->id_index(tool, event, session);
+ default:
+ return -EINVAL;
+ }
+}
+
+int perf_session__deliver_synth_event(struct perf_session *session,
+ union perf_event *event,
+ struct perf_sample *sample)
+{
+ struct perf_evlist *evlist = session->evlist;
+ struct perf_tool *tool = session->tool;
+
+ events_stats__inc(&evlist->stats, event->header.type);
+
+ if (event->header.type >= PERF_RECORD_USER_TYPE_START)
+ return perf_session__process_user_event(session, event, 0);
+
+ return machines__deliver_event(&session->machines, evlist, event, sample, tool, 0);
+}
+
+static void event_swap(union perf_event *event, bool sample_id_all)
+{
+ perf_event__swap_op swap;
+
+ swap = perf_event__swap_ops[event->header.type];
+ if (swap)
+ swap(event, sample_id_all);
+}
+
+int perf_session__peek_event(struct perf_session *session, off_t file_offset,
+ void *buf, size_t buf_sz,
+ union perf_event **event_ptr,
+ struct perf_sample *sample)
+{
+ union perf_event *event;
+ size_t hdr_sz, rest;
+ int fd;
+
+ if (session->one_mmap && !session->header.needs_swap) {
+ event = file_offset - session->one_mmap_offset +
+ session->one_mmap_addr;
+ goto out_parse_sample;
+ }
+
+ if (perf_data_file__is_pipe(session->file))
+ return -1;
+
+ fd = perf_data_file__fd(session->file);
+ hdr_sz = sizeof(struct perf_event_header);
+
+ if (buf_sz < hdr_sz)
+ return -1;
+
+ if (lseek(fd, file_offset, SEEK_SET) == (off_t)-1 ||
+ readn(fd, &buf, hdr_sz) != (ssize_t)hdr_sz)
+ return -1;
+
+ event = (union perf_event *)buf;
+
+ if (session->header.needs_swap)
+ perf_event_header__bswap(&event->header);
+
+ if (event->header.size < hdr_sz)
+ return -1;
+
+ rest = event->header.size - hdr_sz;
+
+ if (readn(fd, &buf, rest) != (ssize_t)rest)
+ return -1;
+
+ if (session->header.needs_swap)
+ event_swap(event, perf_evlist__sample_id_all(session->evlist));
+
+out_parse_sample:
+
+ if (sample && event->header.type < PERF_RECORD_USER_TYPE_START &&
+ perf_evlist__parse_sample(session->evlist, event, sample))
+ return -1;
+
+ *event_ptr = event;
+
+ return 0;
+}
+
+static s64 perf_session__process_event(struct perf_session *session,
+ union perf_event *event, u64 file_offset)
+{
+ struct perf_evlist *evlist = session->evlist;
+ struct perf_tool *tool = session->tool;
+ struct perf_sample sample;
+ int ret;
+
+ if (session->header.needs_swap)
+ event_swap(event, perf_evlist__sample_id_all(evlist));
+
+ if (event->header.type >= PERF_RECORD_HEADER_MAX)
+ return -EINVAL;
+
+ events_stats__inc(&evlist->stats, event->header.type);
+
+ if (event->header.type >= PERF_RECORD_USER_TYPE_START)
+ return perf_session__process_user_event(session, event, file_offset);
+
+ /*
+ * For all kernel events we get the sample data
+ */
+ ret = perf_evlist__parse_sample(evlist, event, &sample);
+ if (ret)
+ return ret;
+
+ if (tool->ordered_events) {
+ ret = perf_session__queue_event(session, event, &sample, file_offset);
+ if (ret != -ETIME)
+ return ret;
+ }
+
+ return machines__deliver_event(&session->machines, evlist, event,
+ &sample, tool, file_offset);
+}
+
+void perf_event_header__bswap(struct perf_event_header *hdr)
+{
+ hdr->type = bswap_32(hdr->type);
+ hdr->misc = bswap_16(hdr->misc);
+ hdr->size = bswap_16(hdr->size);
+}
+
+struct thread *perf_session__findnew(struct perf_session *session, pid_t pid)
+{
+ return machine__findnew_thread(&session->machines.host, -1, pid);
+}
+
+static struct thread *perf_session__register_idle_thread(struct perf_session *session)
+{
+ struct thread *thread;
+
+ thread = machine__findnew_thread(&session->machines.host, 0, 0);
+ if (thread == NULL || thread__set_comm(thread, "swapper", 0)) {
+ pr_err("problem inserting idle task.\n");
+ thread = NULL;
+ }
+
+ return thread;
+}
+
+static void perf_session__warn_about_errors(const struct perf_session *session)
+{
+ const struct events_stats *stats = &session->evlist->stats;
+ const struct ordered_events *oe = &session->ordered_events;
+
+ if (session->tool->lost == perf_event__process_lost &&
+ stats->nr_events[PERF_RECORD_LOST] != 0) {
+ ui__warning("Processed %d events and lost %d chunks!\n\n"
+ "Check IO/CPU overload!\n\n",
+ stats->nr_events[0],
+ stats->nr_events[PERF_RECORD_LOST]);
+ }
+
+ if (stats->nr_unknown_events != 0) {
+ ui__warning("Found %u unknown events!\n\n"
+ "Is this an older tool processing a perf.data "
+ "file generated by a more recent tool?\n\n"
+ "If that is not the case, consider "
+ "reporting to linux-kernel@vger.kernel.org.\n\n",
+ stats->nr_unknown_events);
+ }
+
+ if (stats->nr_unknown_id != 0) {
+ ui__warning("%u samples with id not present in the header\n",
+ stats->nr_unknown_id);
+ }
+
+ if (stats->nr_invalid_chains != 0) {
+ ui__warning("Found invalid callchains!\n\n"
+ "%u out of %u events were discarded for this reason.\n\n"
+ "Consider reporting to linux-kernel@vger.kernel.org.\n\n",
+ stats->nr_invalid_chains,
+ stats->nr_events[PERF_RECORD_SAMPLE]);
+ }
+
+ if (stats->nr_unprocessable_samples != 0) {
+ ui__warning("%u unprocessable samples recorded.\n"
+ "Do you have a KVM guest running and not using 'perf kvm'?\n",
+ stats->nr_unprocessable_samples);
+ }
+
+ if (oe->nr_unordered_events != 0)
+ ui__warning("%u out of order events recorded.\n", oe->nr_unordered_events);
+}
+
+volatile int session_done;
+
+static int __perf_session__process_pipe_events(struct perf_session *session)
+{
+ struct ordered_events *oe = &session->ordered_events;
+ struct perf_tool *tool = session->tool;
+ int fd = perf_data_file__fd(session->file);
+ union perf_event *event;
+ uint32_t size, cur_size = 0;
+ void *buf = NULL;
+ s64 skip = 0;
+ u64 head;
+ ssize_t err;
+ void *p;
+
+ perf_tool__fill_defaults(tool);
+
+ head = 0;
+ cur_size = sizeof(union perf_event);
+
+ buf = malloc(cur_size);
+ if (!buf)
+ return -errno;
+more:
+ event = buf;
+ err = readn(fd, event, sizeof(struct perf_event_header));
+ if (err <= 0) {
+ if (err == 0)
+ goto done;
+
+ pr_err("failed to read event header\n");
+ goto out_err;
+ }
+
+ if (session->header.needs_swap)
+ perf_event_header__bswap(&event->header);
+
+ size = event->header.size;
+ if (size < sizeof(struct perf_event_header)) {
+ pr_err("bad event header size\n");
+ goto out_err;
+ }
+
+ if (size > cur_size) {
+ void *new = realloc(buf, size);
+ if (!new) {
+ pr_err("failed to allocate memory to read event\n");
+ goto out_err;
+ }
+ buf = new;
+ cur_size = size;
+ event = buf;
+ }
+ p = event;
+ p += sizeof(struct perf_event_header);
+
+ if (size - sizeof(struct perf_event_header)) {
+ err = readn(fd, p, size - sizeof(struct perf_event_header));
+ if (err <= 0) {
+ if (err == 0) {
+ pr_err("unexpected end of event stream\n");
+ goto done;
+ }
+
+ pr_err("failed to read event data\n");
+ goto out_err;
+ }
+ }
+
+ if ((skip = perf_session__process_event(session, event, head)) < 0) {
+ pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
+ head, event->header.size, event->header.type);
+ err = -EINVAL;
+ goto out_err;
+ }
+
+ head += size;
+
+ if (skip > 0)
+ head += skip;
+
+ if (!session_done())
+ goto more;
+done:
+ /* do the final flush for ordered samples */
+ err = ordered_events__flush(oe, OE_FLUSH__FINAL);
+out_err:
+ free(buf);
+ perf_session__warn_about_errors(session);
+ ordered_events__free(&session->ordered_events);
+ return err;
+}
+
+static union perf_event *
+fetch_mmaped_event(struct perf_session *session,
+ u64 head, size_t mmap_size, char *buf)
+{
+ union perf_event *event;
+
+ /*
+ * Ensure we have enough space remaining to read
+ * the size of the event in the headers.
+ */
+ if (head + sizeof(event->header) > mmap_size)
+ return NULL;
+
+ event = (union perf_event *)(buf + head);
+
+ if (session->header.needs_swap)
+ perf_event_header__bswap(&event->header);
+
+ if (head + event->header.size > mmap_size) {
+ /* We're not fetching the event so swap back again */
+ if (session->header.needs_swap)
+ perf_event_header__bswap(&event->header);
+ return NULL;
+ }
+
+ return event;
+}
+
+/*
+ * On 64bit we can mmap the data file in one go. No need for tiny mmap
+ * slices. On 32bit we use 32MB.
+ */
+#if BITS_PER_LONG == 64
+#define MMAP_SIZE ULLONG_MAX
+#define NUM_MMAPS 1
+#else
+#define MMAP_SIZE (32 * 1024 * 1024ULL)
+#define NUM_MMAPS 128
+#endif
+
+static int __perf_session__process_events(struct perf_session *session,
+ u64 data_offset, u64 data_size,
+ u64 file_size)
+{
+ struct ordered_events *oe = &session->ordered_events;
+ struct perf_tool *tool = session->tool;
+ int fd = perf_data_file__fd(session->file);
+ u64 head, page_offset, file_offset, file_pos, size;
+ int err, mmap_prot, mmap_flags, map_idx = 0;
+ size_t mmap_size;
+ char *buf, *mmaps[NUM_MMAPS];
+ union perf_event *event;
+ struct ui_progress prog;
+ s64 skip;
+
+ perf_tool__fill_defaults(tool);
+
+ page_offset = page_size * (data_offset / page_size);
+ file_offset = page_offset;
+ head = data_offset - page_offset;
+
+ if (data_size && (data_offset + data_size < file_size))
+ file_size = data_offset + data_size;
+
+ ui_progress__init(&prog, file_size, "Processing events...");
+
+ mmap_size = MMAP_SIZE;
+ if (mmap_size > file_size) {
+ mmap_size = file_size;
+ session->one_mmap = true;
+ }
+
+ memset(mmaps, 0, sizeof(mmaps));
+
+ mmap_prot = PROT_READ;
+ mmap_flags = MAP_SHARED;
+
+ if (session->header.needs_swap) {
+ mmap_prot |= PROT_WRITE;
+ mmap_flags = MAP_PRIVATE;
+ }
+remap:
+ buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, fd,
+ file_offset);
+ if (buf == MAP_FAILED) {
+ pr_err("failed to mmap file\n");
+ err = -errno;
+ goto out_err;
+ }
+ mmaps[map_idx] = buf;
+ map_idx = (map_idx + 1) & (ARRAY_SIZE(mmaps) - 1);
+ file_pos = file_offset + head;
+ if (session->one_mmap) {
+ session->one_mmap_addr = buf;
+ session->one_mmap_offset = file_offset;
+ }
+
+more:
+ event = fetch_mmaped_event(session, head, mmap_size, buf);
+ if (!event) {
+ if (mmaps[map_idx]) {
+ munmap(mmaps[map_idx], mmap_size);
+ mmaps[map_idx] = NULL;
+ }
+
+ page_offset = page_size * (head / page_size);
+ file_offset += page_offset;
+ head -= page_offset;
+ goto remap;
+ }
+
+ size = event->header.size;
+
+ if (size < sizeof(struct perf_event_header) ||
+ (skip = perf_session__process_event(session, event, file_pos)) < 0) {
+ pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
+ file_offset + head, event->header.size,
+ event->header.type);
+ err = -EINVAL;
+ goto out_err;
+ }
+
+ if (skip)
+ size += skip;
+
+ head += size;
+ file_pos += size;
+
+ ui_progress__update(&prog, size);
+
+ if (session_done())
+ goto out;
+
+ if (file_pos < file_size)
+ goto more;
+
+out:
+ /* do the final flush for ordered samples */
+ err = ordered_events__flush(oe, OE_FLUSH__FINAL);
+out_err:
+ ui_progress__finish();
+ perf_session__warn_about_errors(session);
+ ordered_events__free(&session->ordered_events);
+ session->one_mmap = false;
+ return err;
+}
+
+int perf_session__process_events(struct perf_session *session)
+{
+ u64 size = perf_data_file__size(session->file);
+ int err;
+
+ if (perf_session__register_idle_thread(session) == NULL)
+ return -ENOMEM;
+
+ if (!perf_data_file__is_pipe(session->file))
+ err = __perf_session__process_events(session,
+ session->header.data_offset,
+ session->header.data_size, size);
+ else
+ err = __perf_session__process_pipe_events(session);
+
+ return err;
+}
+
+bool perf_session__has_traces(struct perf_session *session, const char *msg)
+{
+ struct perf_evsel *evsel;
+
+ evlist__for_each(session->evlist, evsel) {
+ if (evsel->attr.type == PERF_TYPE_TRACEPOINT)
+ return true;
+ }
+
+ pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg);
+ return false;
+}
+
+int maps__set_kallsyms_ref_reloc_sym(struct map **maps,
+ const char *symbol_name, u64 addr)
+{
+ char *bracket;
+ enum map_type i;
+ struct ref_reloc_sym *ref;
+
+ ref = zalloc(sizeof(struct ref_reloc_sym));
+ if (ref == NULL)
+ return -ENOMEM;
+
+ ref->name = strdup(symbol_name);
+ if (ref->name == NULL) {
+ free(ref);
+ return -ENOMEM;
+ }
+
+ bracket = strchr(ref->name, ']');
+ if (bracket)
+ *bracket = '\0';
+
+ ref->addr = addr;
+
+ for (i = 0; i < MAP__NR_TYPES; ++i) {
+ struct kmap *kmap = map__kmap(maps[i]);
+
+ if (!kmap)
+ continue;
+ kmap->ref_reloc_sym = ref;
+ }
+
+ return 0;
+}
+
+size_t perf_session__fprintf_dsos(struct perf_session *session, FILE *fp)
+{
+ return machines__fprintf_dsos(&session->machines, fp);
+}
+
+size_t perf_session__fprintf_dsos_buildid(struct perf_session *session, FILE *fp,
+ bool (skip)(struct dso *dso, int parm), int parm)
+{
+ return machines__fprintf_dsos_buildid(&session->machines, fp, skip, parm);
+}
+
+size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp)
+{
+ size_t ret = fprintf(fp, "Aggregated stats:\n");
+
+ ret += events_stats__fprintf(&session->evlist->stats, fp);
+ return ret;
+}
+
+size_t perf_session__fprintf(struct perf_session *session, FILE *fp)
+{
+ /*
+ * FIXME: Here we have to actually print all the machines in this
+ * session, not just the host...
+ */
+ return machine__fprintf(&session->machines.host, fp);
+}
+
+struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session,
+ unsigned int type)
+{
+ struct perf_evsel *pos;
+
+ evlist__for_each(session->evlist, pos) {
+ if (pos->attr.type == type)
+ return pos;
+ }
+ return NULL;
+}
+
+void perf_evsel__print_ip(struct perf_evsel *evsel, struct perf_sample *sample,
+ struct addr_location *al,
+ unsigned int print_opts, unsigned int stack_depth)
+{
+ struct callchain_cursor_node *node;
+ int print_ip = print_opts & PRINT_IP_OPT_IP;
+ int print_sym = print_opts & PRINT_IP_OPT_SYM;
+ int print_dso = print_opts & PRINT_IP_OPT_DSO;
+ int print_symoffset = print_opts & PRINT_IP_OPT_SYMOFFSET;
+ int print_oneline = print_opts & PRINT_IP_OPT_ONELINE;
+ int print_srcline = print_opts & PRINT_IP_OPT_SRCLINE;
+ char s = print_oneline ? ' ' : '\t';
+
+ if (symbol_conf.use_callchain && sample->callchain) {
+ struct addr_location node_al;
+
+ if (thread__resolve_callchain(al->thread, evsel,
+ sample, NULL, NULL,
+ PERF_MAX_STACK_DEPTH) != 0) {
+ if (verbose)
+ error("Failed to resolve callchain. Skipping\n");
+ return;
+ }
+ callchain_cursor_commit(&callchain_cursor);
+
+ if (print_symoffset)
+ node_al = *al;
+
+ while (stack_depth) {
+ u64 addr = 0;
+
+ node = callchain_cursor_current(&callchain_cursor);
+ if (!node)
+ break;
+
+ if (node->sym && node->sym->ignore)
+ goto next;
+
+ if (print_ip)
+ printf("%c%16" PRIx64, s, node->ip);
+
+ if (node->map)
+ addr = node->map->map_ip(node->map, node->ip);
+
+ if (print_sym) {
+ printf(" ");
+ if (print_symoffset) {
+ node_al.addr = addr;
+ node_al.map = node->map;
+ symbol__fprintf_symname_offs(node->sym, &node_al, stdout);
+ } else
+ symbol__fprintf_symname(node->sym, stdout);
+ }
+
+ if (print_dso) {
+ printf(" (");
+ map__fprintf_dsoname(node->map, stdout);
+ printf(")");
+ }
+
+ if (print_srcline)
+ map__fprintf_srcline(node->map, addr, "\n ",
+ stdout);
+
+ if (!print_oneline)
+ printf("\n");
+
+ stack_depth--;
+next:
+ callchain_cursor_advance(&callchain_cursor);
+ }
+
+ } else {
+ if (al->sym && al->sym->ignore)
+ return;
+
+ if (print_ip)
+ printf("%16" PRIx64, sample->ip);
+
+ if (print_sym) {
+ printf(" ");
+ if (print_symoffset)
+ symbol__fprintf_symname_offs(al->sym, al,
+ stdout);
+ else
+ symbol__fprintf_symname(al->sym, stdout);
+ }
+
+ if (print_dso) {
+ printf(" (");
+ map__fprintf_dsoname(al->map, stdout);
+ printf(")");
+ }
+
+ if (print_srcline)
+ map__fprintf_srcline(al->map, al->addr, "\n ", stdout);
+ }
+}
+
+int perf_session__cpu_bitmap(struct perf_session *session,
+ const char *cpu_list, unsigned long *cpu_bitmap)
+{
+ int i, err = -1;
+ struct cpu_map *map;
+
+ for (i = 0; i < PERF_TYPE_MAX; ++i) {
+ struct perf_evsel *evsel;
+
+ evsel = perf_session__find_first_evtype(session, i);
+ if (!evsel)
+ continue;
+
+ if (!(evsel->attr.sample_type & PERF_SAMPLE_CPU)) {
+ pr_err("File does not contain CPU events. "
+ "Remove -c option to proceed.\n");
+ return -1;
+ }
+ }
+
+ map = cpu_map__new(cpu_list);
+ if (map == NULL) {
+ pr_err("Invalid cpu_list\n");
+ return -1;
+ }
+
+ for (i = 0; i < map->nr; i++) {
+ int cpu = map->map[i];
+
+ if (cpu >= MAX_NR_CPUS) {
+ pr_err("Requested CPU %d too large. "
+ "Consider raising MAX_NR_CPUS\n", cpu);
+ goto out_delete_map;
+ }
+
+ set_bit(cpu, cpu_bitmap);
+ }
+
+ err = 0;
+
+out_delete_map:
+ cpu_map__delete(map);
+ return err;
+}
+
+void perf_session__fprintf_info(struct perf_session *session, FILE *fp,
+ bool full)
+{
+ struct stat st;
+ int fd, ret;
+
+ if (session == NULL || fp == NULL)
+ return;
+
+ fd = perf_data_file__fd(session->file);
+
+ ret = fstat(fd, &st);
+ if (ret == -1)
+ return;
+
+ fprintf(fp, "# ========\n");
+ fprintf(fp, "# captured on: %s", ctime(&st.st_ctime));
+ perf_header__fprintf_info(session, fp, full);
+ fprintf(fp, "# ========\n#\n");
+}
+
+
+int __perf_session__set_tracepoints_handlers(struct perf_session *session,
+ const struct perf_evsel_str_handler *assocs,
+ size_t nr_assocs)
+{
+ struct perf_evsel *evsel;
+ size_t i;
+ int err;
+
+ for (i = 0; i < nr_assocs; i++) {
+ /*
+ * Adding a handler for an event not in the session,
+ * just ignore it.
+ */
+ evsel = perf_evlist__find_tracepoint_by_name(session->evlist, assocs[i].name);
+ if (evsel == NULL)
+ continue;
+
+ err = -EEXIST;
+ if (evsel->handler != NULL)
+ goto out;
+ evsel->handler = assocs[i].handler;
+ }
+
+ err = 0;
+out:
+ return err;
+}
+
+int perf_event__process_id_index(struct perf_tool *tool __maybe_unused,
+ union perf_event *event,
+ struct perf_session *session)
+{
+ struct perf_evlist *evlist = session->evlist;
+ struct id_index_event *ie = &event->id_index;
+ size_t i, nr, max_nr;
+
+ max_nr = (ie->header.size - sizeof(struct id_index_event)) /
+ sizeof(struct id_index_entry);
+ nr = ie->nr;
+ if (nr > max_nr)
+ return -EINVAL;
+
+ if (dump_trace)
+ fprintf(stdout, " nr: %zu\n", nr);
+
+ for (i = 0; i < nr; i++) {
+ struct id_index_entry *e = &ie->entries[i];
+ struct perf_sample_id *sid;
+
+ if (dump_trace) {
+ fprintf(stdout, " ... id: %"PRIu64, e->id);
+ fprintf(stdout, " idx: %"PRIu64, e->idx);
+ fprintf(stdout, " cpu: %"PRId64, e->cpu);
+ fprintf(stdout, " tid: %"PRId64"\n", e->tid);
+ }
+
+ sid = perf_evlist__id2sid(evlist, e->id);
+ if (!sid)
+ return -ENOENT;
+ sid->idx = e->idx;
+ sid->cpu = e->cpu;
+ sid->tid = e->tid;
+ }
+ return 0;
+}
+
+int perf_event__synthesize_id_index(struct perf_tool *tool,
+ perf_event__handler_t process,
+ struct perf_evlist *evlist,
+ struct machine *machine)
+{
+ union perf_event *ev;
+ struct perf_evsel *evsel;
+ size_t nr = 0, i = 0, sz, max_nr, n;
+ int err;
+
+ pr_debug2("Synthesizing id index\n");
+
+ max_nr = (UINT16_MAX - sizeof(struct id_index_event)) /
+ sizeof(struct id_index_entry);
+
+ evlist__for_each(evlist, evsel)
+ nr += evsel->ids;
+
+ n = nr > max_nr ? max_nr : nr;
+ sz = sizeof(struct id_index_event) + n * sizeof(struct id_index_entry);
+ ev = zalloc(sz);
+ if (!ev)
+ return -ENOMEM;
+
+ ev->id_index.header.type = PERF_RECORD_ID_INDEX;
+ ev->id_index.header.size = sz;
+ ev->id_index.nr = n;
+
+ evlist__for_each(evlist, evsel) {
+ u32 j;
+
+ for (j = 0; j < evsel->ids; j++) {
+ struct id_index_entry *e;
+ struct perf_sample_id *sid;
+
+ if (i >= n) {
+ err = process(tool, ev, NULL, machine);
+ if (err)
+ goto out_err;
+ nr -= n;
+ i = 0;
+ }
+
+ e = &ev->id_index.entries[i++];
+
+ e->id = evsel->id[j];
+
+ sid = perf_evlist__id2sid(evlist, e->id);
+ if (!sid) {
+ free(ev);
+ return -ENOENT;
+ }
+
+ e->idx = sid->idx;
+ e->cpu = sid->cpu;
+ e->tid = sid->tid;
+ }
+ }
+
+ sz = sizeof(struct id_index_event) + nr * sizeof(struct id_index_entry);
+ ev->id_index.header.size = sz;
+ ev->id_index.nr = nr;
+
+ err = process(tool, ev, NULL, machine);
+out_err:
+ free(ev);
+
+ return err;
+}
Code Review / kvmfornfv.git / blobdiff