zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/tools/perf/util/event.c b/ap/os/linux/linux-3.4.x/tools/perf/util/event.c
new file mode 100644
index 0000000..2a6f33c
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/tools/perf/util/event.c
@@ -0,0 +1,898 @@
+#include <linux/types.h>
+#include "event.h"
+#include "debug.h"
+#include "sort.h"
+#include "string.h"
+#include "strlist.h"
+#include "thread.h"
+#include "thread_map.h"
+
+static const char *perf_event__names[] = {
+ [0] = "TOTAL",
+ [PERF_RECORD_MMAP] = "MMAP",
+ [PERF_RECORD_LOST] = "LOST",
+ [PERF_RECORD_COMM] = "COMM",
+ [PERF_RECORD_EXIT] = "EXIT",
+ [PERF_RECORD_THROTTLE] = "THROTTLE",
+ [PERF_RECORD_UNTHROTTLE] = "UNTHROTTLE",
+ [PERF_RECORD_FORK] = "FORK",
+ [PERF_RECORD_READ] = "READ",
+ [PERF_RECORD_SAMPLE] = "SAMPLE",
+ [PERF_RECORD_HEADER_ATTR] = "ATTR",
+ [PERF_RECORD_HEADER_EVENT_TYPE] = "EVENT_TYPE",
+ [PERF_RECORD_HEADER_TRACING_DATA] = "TRACING_DATA",
+ [PERF_RECORD_HEADER_BUILD_ID] = "BUILD_ID",
+ [PERF_RECORD_FINISHED_ROUND] = "FINISHED_ROUND",
+};
+
+const char *perf_event__name(unsigned int id)
+{
+ if (id >= ARRAY_SIZE(perf_event__names))
+ return "INVALID";
+ if (!perf_event__names[id])
+ return "UNKNOWN";
+ return perf_event__names[id];
+}
+
+static struct perf_sample synth_sample = {
+ .pid = -1,
+ .tid = -1,
+ .time = -1,
+ .stream_id = -1,
+ .cpu = -1,
+ .period = 1,
+};
+
+static pid_t perf_event__get_comm_tgid(pid_t pid, char *comm, size_t len)
+{
+ char filename[PATH_MAX];
+ char bf[BUFSIZ];
+ FILE *fp;
+ size_t size = 0;
+ pid_t tgid = -1;
+
+ snprintf(filename, sizeof(filename), "/proc/%d/status", pid);
+
+ fp = fopen(filename, "r");
+ if (fp == NULL) {
+ pr_debug("couldn't open %s\n", filename);
+ return 0;
+ }
+
+ while (!comm[0] || (tgid < 0)) {
+ if (fgets(bf, sizeof(bf), fp) == NULL) {
+ pr_warning("couldn't get COMM and pgid, malformed %s\n",
+ filename);
+ break;
+ }
+
+ if (memcmp(bf, "Name:", 5) == 0) {
+ char *name = bf + 5;
+ while (*name && isspace(*name))
+ ++name;
+ size = strlen(name) - 1;
+ if (size >= len)
+ size = len - 1;
+ memcpy(comm, name, size);
+ comm[size] = '\0';
+
+ } else if (memcmp(bf, "Tgid:", 5) == 0) {
+ char *tgids = bf + 5;
+ while (*tgids && isspace(*tgids))
+ ++tgids;
+ tgid = atoi(tgids);
+ }
+ }
+
+ fclose(fp);
+
+ return tgid;
+}
+
+static pid_t perf_event__synthesize_comm(struct perf_tool *tool,
+ union perf_event *event, pid_t pid,
+ int full,
+ perf_event__handler_t process,
+ struct machine *machine)
+{
+ char filename[PATH_MAX];
+ size_t size;
+ DIR *tasks;
+ struct dirent dirent, *next;
+ pid_t tgid;
+
+ memset(&event->comm, 0, sizeof(event->comm));
+
+ tgid = perf_event__get_comm_tgid(pid, event->comm.comm,
+ sizeof(event->comm.comm));
+ if (tgid < 0)
+ goto out;
+
+ event->comm.pid = tgid;
+ event->comm.header.type = PERF_RECORD_COMM;
+
+ size = strlen(event->comm.comm) + 1;
+ size = ALIGN(size, sizeof(u64));
+ memset(event->comm.comm + size, 0, machine->id_hdr_size);
+ event->comm.header.size = (sizeof(event->comm) -
+ (sizeof(event->comm.comm) - size) +
+ machine->id_hdr_size);
+ if (!full) {
+ event->comm.tid = pid;
+
+ process(tool, event, &synth_sample, machine);
+ goto out;
+ }
+
+ snprintf(filename, sizeof(filename), "/proc/%d/task", pid);
+
+ tasks = opendir(filename);
+ if (tasks == NULL) {
+ pr_debug("couldn't open %s\n", filename);
+ return 0;
+ }
+
+ while (!readdir_r(tasks, &dirent, &next) && next) {
+ char *end;
+ pid = strtol(dirent.d_name, &end, 10);
+ if (*end)
+ continue;
+
+ /* already have tgid; jut want to update the comm */
+ (void) perf_event__get_comm_tgid(pid, event->comm.comm,
+ sizeof(event->comm.comm));
+
+ size = strlen(event->comm.comm) + 1;
+ size = ALIGN(size, sizeof(u64));
+ memset(event->comm.comm + size, 0, machine->id_hdr_size);
+ event->comm.header.size = (sizeof(event->comm) -
+ (sizeof(event->comm.comm) - size) +
+ machine->id_hdr_size);
+
+ event->comm.tid = pid;
+
+ process(tool, event, &synth_sample, machine);
+ }
+
+ closedir(tasks);
+out:
+ return tgid;
+}
+
+static int perf_event__synthesize_mmap_events(struct perf_tool *tool,
+ union perf_event *event,
+ pid_t pid, pid_t tgid,
+ perf_event__handler_t process,
+ struct machine *machine)
+{
+ char filename[PATH_MAX];
+ FILE *fp;
+
+ snprintf(filename, sizeof(filename), "/proc/%d/maps", pid);
+
+ fp = fopen(filename, "r");
+ if (fp == NULL) {
+ /*
+ * We raced with a task exiting - just return:
+ */
+ pr_debug("couldn't open %s\n", filename);
+ return -1;
+ }
+
+ event->header.type = PERF_RECORD_MMAP;
+ /*
+ * Just like the kernel, see __perf_event_mmap in kernel/perf_event.c
+ */
+ event->header.misc = PERF_RECORD_MISC_USER;
+
+ while (1) {
+ char bf[BUFSIZ], *pbf = bf;
+ int n;
+ size_t size;
+ if (fgets(bf, sizeof(bf), fp) == NULL)
+ break;
+
+ /* 00400000-0040c000 r-xp 00000000 fd:01 41038 /bin/cat */
+ n = hex2u64(pbf, &event->mmap.start);
+ if (n < 0)
+ continue;
+ pbf += n + 1;
+ n = hex2u64(pbf, &event->mmap.len);
+ if (n < 0)
+ continue;
+ pbf += n + 3;
+ if (*pbf == 'x') { /* vm_exec */
+ char anonstr[] = "//anon\n";
+ char *execname = strchr(bf, '/');
+
+ /* Catch VDSO */
+ if (execname == NULL)
+ execname = strstr(bf, "[vdso]");
+
+ /* Catch anonymous mmaps */
+ if ((execname == NULL) && !strstr(bf, "["))
+ execname = anonstr;
+
+ if (execname == NULL)
+ continue;
+
+ pbf += 3;
+ n = hex2u64(pbf, &event->mmap.pgoff);
+
+ size = strlen(execname);
+ execname[size - 1] = '\0'; /* Remove \n */
+ memcpy(event->mmap.filename, execname, size);
+ size = ALIGN(size, sizeof(u64));
+ event->mmap.len -= event->mmap.start;
+ event->mmap.header.size = (sizeof(event->mmap) -
+ (sizeof(event->mmap.filename) - size));
+ memset(event->mmap.filename + size, 0, machine->id_hdr_size);
+ event->mmap.header.size += machine->id_hdr_size;
+ event->mmap.pid = tgid;
+ event->mmap.tid = pid;
+
+ process(tool, event, &synth_sample, machine);
+ }
+ }
+
+ fclose(fp);
+ return 0;
+}
+
+int perf_event__synthesize_modules(struct perf_tool *tool,
+ perf_event__handler_t process,
+ struct machine *machine)
+{
+ struct rb_node *nd;
+ struct map_groups *kmaps = &machine->kmaps;
+ union perf_event *event = zalloc((sizeof(event->mmap) +
+ machine->id_hdr_size));
+ if (event == NULL) {
+ pr_debug("Not enough memory synthesizing mmap event "
+ "for kernel modules\n");
+ return -1;
+ }
+
+ event->header.type = PERF_RECORD_MMAP;
+
+ /*
+ * kernel uses 0 for user space maps, see kernel/perf_event.c
+ * __perf_event_mmap
+ */
+ if (machine__is_host(machine))
+ event->header.misc = PERF_RECORD_MISC_KERNEL;
+ else
+ event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL;
+
+ for (nd = rb_first(&kmaps->maps[MAP__FUNCTION]);
+ nd; nd = rb_next(nd)) {
+ size_t size;
+ struct map *pos = rb_entry(nd, struct map, rb_node);
+
+ if (pos->dso->kernel)
+ continue;
+
+ size = ALIGN(pos->dso->long_name_len + 1, sizeof(u64));
+ event->mmap.header.type = PERF_RECORD_MMAP;
+ event->mmap.header.size = (sizeof(event->mmap) -
+ (sizeof(event->mmap.filename) - size));
+ memset(event->mmap.filename + size, 0, machine->id_hdr_size);
+ event->mmap.header.size += machine->id_hdr_size;
+ event->mmap.start = pos->start;
+ event->mmap.len = pos->end - pos->start;
+ event->mmap.pid = machine->pid;
+
+ memcpy(event->mmap.filename, pos->dso->long_name,
+ pos->dso->long_name_len + 1);
+ process(tool, event, &synth_sample, machine);
+ }
+
+ free(event);
+ return 0;
+}
+
+static int __event__synthesize_thread(union perf_event *comm_event,
+ union perf_event *mmap_event,
+ pid_t pid, int full,
+ perf_event__handler_t process,
+ struct perf_tool *tool,
+ struct machine *machine)
+{
+ pid_t tgid = perf_event__synthesize_comm(tool, comm_event, pid, full,
+ process, machine);
+ if (tgid == -1)
+ return -1;
+ return perf_event__synthesize_mmap_events(tool, mmap_event, pid, tgid,
+ process, machine);
+}
+
+int perf_event__synthesize_thread_map(struct perf_tool *tool,
+ struct thread_map *threads,
+ perf_event__handler_t process,
+ struct machine *machine)
+{
+ union perf_event *comm_event, *mmap_event;
+ int err = -1, thread, j;
+
+ comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size);
+ if (comm_event == NULL)
+ goto out;
+
+ mmap_event = malloc(sizeof(mmap_event->mmap) + machine->id_hdr_size);
+ if (mmap_event == NULL)
+ goto out_free_comm;
+
+ err = 0;
+ for (thread = 0; thread < threads->nr; ++thread) {
+ if (__event__synthesize_thread(comm_event, mmap_event,
+ threads->map[thread], 0,
+ process, tool, machine)) {
+ err = -1;
+ break;
+ }
+
+ /*
+ * comm.pid is set to thread group id by
+ * perf_event__synthesize_comm
+ */
+ if ((int) comm_event->comm.pid != threads->map[thread]) {
+ bool need_leader = true;
+
+ /* is thread group leader in thread_map? */
+ for (j = 0; j < threads->nr; ++j) {
+ if ((int) comm_event->comm.pid == threads->map[j]) {
+ need_leader = false;
+ break;
+ }
+ }
+
+ /* if not, generate events for it */
+ if (need_leader &&
+ __event__synthesize_thread(comm_event,
+ mmap_event,
+ comm_event->comm.pid, 0,
+ process, tool, machine)) {
+ err = -1;
+ break;
+ }
+ }
+ }
+ free(mmap_event);
+out_free_comm:
+ free(comm_event);
+out:
+ return err;
+}
+
+int perf_event__synthesize_threads(struct perf_tool *tool,
+ perf_event__handler_t process,
+ struct machine *machine)
+{
+ DIR *proc;
+ struct dirent dirent, *next;
+ union perf_event *comm_event, *mmap_event;
+ int err = -1;
+
+ comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size);
+ if (comm_event == NULL)
+ goto out;
+
+ mmap_event = malloc(sizeof(mmap_event->mmap) + machine->id_hdr_size);
+ if (mmap_event == NULL)
+ goto out_free_comm;
+
+ proc = opendir("/proc");
+ if (proc == NULL)
+ goto out_free_mmap;
+
+ while (!readdir_r(proc, &dirent, &next) && next) {
+ char *end;
+ pid_t pid = strtol(dirent.d_name, &end, 10);
+
+ if (*end) /* only interested in proper numerical dirents */
+ continue;
+
+ __event__synthesize_thread(comm_event, mmap_event, pid, 1,
+ process, tool, machine);
+ }
+
+ closedir(proc);
+ err = 0;
+out_free_mmap:
+ free(mmap_event);
+out_free_comm:
+ free(comm_event);
+out:
+ return err;
+}
+
+struct process_symbol_args {
+ const char *name;
+ u64 start;
+};
+
+static int find_symbol_cb(void *arg, const char *name, char type,
+ u64 start, u64 end __used)
+{
+ struct process_symbol_args *args = arg;
+
+ /*
+ * Must be a function or at least an alias, as in PARISC64, where "_text" is
+ * an 'A' to the same address as "_stext".
+ */
+ if (!(symbol_type__is_a(type, MAP__FUNCTION) ||
+ type == 'A') || strcmp(name, args->name))
+ return 0;
+
+ args->start = start;
+ return 1;
+}
+
+int perf_event__synthesize_kernel_mmap(struct perf_tool *tool,
+ perf_event__handler_t process,
+ struct machine *machine,
+ const char *symbol_name)
+{
+ size_t size;
+ const char *filename, *mmap_name;
+ char path[PATH_MAX];
+ char name_buff[PATH_MAX];
+ struct map *map;
+ int err;
+ /*
+ * We should get this from /sys/kernel/sections/.text, but till that is
+ * available use this, and after it is use this as a fallback for older
+ * kernels.
+ */
+ struct process_symbol_args args = { .name = symbol_name, };
+ union perf_event *event = zalloc((sizeof(event->mmap) +
+ machine->id_hdr_size));
+ if (event == NULL) {
+ pr_debug("Not enough memory synthesizing mmap event "
+ "for kernel modules\n");
+ return -1;
+ }
+
+ mmap_name = machine__mmap_name(machine, name_buff, sizeof(name_buff));
+ if (machine__is_host(machine)) {
+ /*
+ * kernel uses PERF_RECORD_MISC_USER for user space maps,
+ * see kernel/perf_event.c __perf_event_mmap
+ */
+ event->header.misc = PERF_RECORD_MISC_KERNEL;
+ filename = "/proc/kallsyms";
+ } else {
+ event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL;
+ if (machine__is_default_guest(machine))
+ filename = (char *) symbol_conf.default_guest_kallsyms;
+ else {
+ sprintf(path, "%s/proc/kallsyms", machine->root_dir);
+ filename = path;
+ }
+ }
+
+ if (kallsyms__parse(filename, &args, find_symbol_cb) <= 0)
+ return -ENOENT;
+
+ map = machine->vmlinux_maps[MAP__FUNCTION];
+ size = snprintf(event->mmap.filename, sizeof(event->mmap.filename),
+ "%s%s", mmap_name, symbol_name) + 1;
+ size = ALIGN(size, sizeof(u64));
+ event->mmap.header.type = PERF_RECORD_MMAP;
+ event->mmap.header.size = (sizeof(event->mmap) -
+ (sizeof(event->mmap.filename) - size) + machine->id_hdr_size);
+ event->mmap.pgoff = args.start;
+ event->mmap.start = map->start;
+ event->mmap.len = map->end - event->mmap.start;
+ event->mmap.pid = machine->pid;
+
+ err = process(tool, event, &synth_sample, machine);
+ free(event);
+
+ return err;
+}
+
+size_t perf_event__fprintf_comm(union perf_event *event, FILE *fp)
+{
+ return fprintf(fp, ": %s:%d\n", event->comm.comm, event->comm.tid);
+}
+
+int perf_event__process_comm(struct perf_tool *tool __used,
+ union perf_event *event,
+ struct perf_sample *sample __used,
+ struct machine *machine)
+{
+ struct thread *thread = machine__findnew_thread(machine, event->comm.tid);
+
+ if (dump_trace)
+ perf_event__fprintf_comm(event, stdout);
+
+ if (thread == NULL || thread__set_comm(thread, event->comm.comm)) {
+ dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+int perf_event__process_lost(struct perf_tool *tool __used,
+ union perf_event *event,
+ struct perf_sample *sample __used,
+ struct machine *machine __used)
+{
+ dump_printf(": id:%" PRIu64 ": lost:%" PRIu64 "\n",
+ event->lost.id, event->lost.lost);
+ return 0;
+}
+
+static void perf_event__set_kernel_mmap_len(union perf_event *event,
+ struct map **maps)
+{
+ maps[MAP__FUNCTION]->start = event->mmap.start;
+ maps[MAP__FUNCTION]->end = event->mmap.start + event->mmap.len;
+ /*
+ * Be a bit paranoid here, some perf.data file came with
+ * a zero sized synthesized MMAP event for the kernel.
+ */
+ if (maps[MAP__FUNCTION]->end == 0)
+ maps[MAP__FUNCTION]->end = ~0ULL;
+}
+
+static int perf_event__process_kernel_mmap(struct perf_tool *tool __used,
+ union perf_event *event,
+ struct machine *machine)
+{
+ struct map *map;
+ char kmmap_prefix[PATH_MAX];
+ enum dso_kernel_type kernel_type;
+ bool is_kernel_mmap;
+
+ machine__mmap_name(machine, kmmap_prefix, sizeof(kmmap_prefix));
+ if (machine__is_host(machine))
+ kernel_type = DSO_TYPE_KERNEL;
+ else
+ kernel_type = DSO_TYPE_GUEST_KERNEL;
+
+ is_kernel_mmap = memcmp(event->mmap.filename,
+ kmmap_prefix,
+ strlen(kmmap_prefix) - 1) == 0;
+ if (event->mmap.filename[0] == '/' ||
+ (!is_kernel_mmap && event->mmap.filename[0] == '[')) {
+
+ char short_module_name[1024];
+ char *name, *dot;
+
+ if (event->mmap.filename[0] == '/') {
+ name = strrchr(event->mmap.filename, '/');
+ if (name == NULL)
+ goto out_problem;
+
+ ++name; /* skip / */
+ dot = strrchr(name, '.');
+ if (dot == NULL)
+ goto out_problem;
+ snprintf(short_module_name, sizeof(short_module_name),
+ "[%.*s]", (int)(dot - name), name);
+ strxfrchar(short_module_name, '-', '_');
+ } else
+ strcpy(short_module_name, event->mmap.filename);
+
+ map = machine__new_module(machine, event->mmap.start,
+ event->mmap.filename);
+ if (map == NULL)
+ goto out_problem;
+
+ name = strdup(short_module_name);
+ if (name == NULL)
+ goto out_problem;
+
+ map->dso->short_name = name;
+ map->dso->sname_alloc = 1;
+ map->end = map->start + event->mmap.len;
+ } else if (is_kernel_mmap) {
+ const char *symbol_name = (event->mmap.filename +
+ strlen(kmmap_prefix));
+ /*
+ * Should be there already, from the build-id table in
+ * the header.
+ */
+ struct dso *kernel = __dsos__findnew(&machine->kernel_dsos,
+ kmmap_prefix);
+ if (kernel == NULL)
+ goto out_problem;
+
+ kernel->kernel = kernel_type;
+ if (__machine__create_kernel_maps(machine, kernel) < 0)
+ goto out_problem;
+
+ perf_event__set_kernel_mmap_len(event, machine->vmlinux_maps);
+
+ /*
+ * Avoid using a zero address (kptr_restrict) for the ref reloc
+ * symbol. Effectively having zero here means that at record
+ * time /proc/sys/kernel/kptr_restrict was non zero.
+ */
+ if (event->mmap.pgoff != 0) {
+ maps__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps,
+ symbol_name,
+ event->mmap.pgoff);
+ }
+
+ if (machine__is_default_guest(machine)) {
+ /*
+ * preload dso of guest kernel and modules
+ */
+ dso__load(kernel, machine->vmlinux_maps[MAP__FUNCTION],
+ NULL);
+ }
+ }
+ return 0;
+out_problem:
+ return -1;
+}
+
+size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp)
+{
+ return fprintf(fp, " %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64 "]: %s\n",
+ event->mmap.pid, event->mmap.tid, event->mmap.start,
+ event->mmap.len, event->mmap.pgoff, event->mmap.filename);
+}
+
+int perf_event__process_mmap(struct perf_tool *tool,
+ union perf_event *event,
+ struct perf_sample *sample __used,
+ struct machine *machine)
+{
+ struct thread *thread;
+ struct map *map;
+ u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
+ int ret = 0;
+
+ if (dump_trace)
+ perf_event__fprintf_mmap(event, stdout);
+
+ if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL ||
+ cpumode == PERF_RECORD_MISC_KERNEL) {
+ ret = perf_event__process_kernel_mmap(tool, event, machine);
+ if (ret < 0)
+ goto out_problem;
+ return 0;
+ }
+
+ thread = machine__findnew_thread(machine, event->mmap.pid);
+ if (thread == NULL)
+ goto out_problem;
+ map = map__new(&machine->user_dsos, event->mmap.start,
+ event->mmap.len, event->mmap.pgoff,
+ event->mmap.pid, event->mmap.filename,
+ MAP__FUNCTION);
+ if (map == NULL)
+ goto out_problem;
+
+ thread__insert_map(thread, map);
+ return 0;
+
+out_problem:
+ dump_printf("problem processing PERF_RECORD_MMAP, skipping event.\n");
+ return 0;
+}
+
+size_t perf_event__fprintf_task(union perf_event *event, FILE *fp)
+{
+ return fprintf(fp, "(%d:%d):(%d:%d)\n",
+ event->fork.pid, event->fork.tid,
+ event->fork.ppid, event->fork.ptid);
+}
+
+int perf_event__process_task(struct perf_tool *tool __used,
+ union perf_event *event,
+ struct perf_sample *sample __used,
+ struct machine *machine)
+{
+ struct thread *thread = machine__findnew_thread(machine, event->fork.tid);
+ struct thread *parent = machine__findnew_thread(machine, event->fork.ptid);
+
+ if (dump_trace)
+ perf_event__fprintf_task(event, stdout);
+
+ if (event->header.type == PERF_RECORD_EXIT) {
+ machine__remove_thread(machine, thread);
+ return 0;
+ }
+
+ if (thread == NULL || parent == NULL ||
+ thread__fork(thread, parent) < 0) {
+ dump_printf("problem processing PERF_RECORD_FORK, skipping event.\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+size_t perf_event__fprintf(union perf_event *event, FILE *fp)
+{
+ size_t ret = fprintf(fp, "PERF_RECORD_%s",
+ perf_event__name(event->header.type));
+
+ switch (event->header.type) {
+ case PERF_RECORD_COMM:
+ ret += perf_event__fprintf_comm(event, fp);
+ break;
+ case PERF_RECORD_FORK:
+ case PERF_RECORD_EXIT:
+ ret += perf_event__fprintf_task(event, fp);
+ break;
+ case PERF_RECORD_MMAP:
+ ret += perf_event__fprintf_mmap(event, fp);
+ break;
+ default:
+ ret += fprintf(fp, "\n");
+ }
+
+ return ret;
+}
+
+int perf_event__process(struct perf_tool *tool, union perf_event *event,
+ struct perf_sample *sample, struct machine *machine)
+{
+ switch (event->header.type) {
+ case PERF_RECORD_COMM:
+ perf_event__process_comm(tool, event, sample, machine);
+ break;
+ case PERF_RECORD_MMAP:
+ perf_event__process_mmap(tool, event, sample, machine);
+ break;
+ case PERF_RECORD_FORK:
+ case PERF_RECORD_EXIT:
+ perf_event__process_task(tool, event, sample, machine);
+ break;
+ case PERF_RECORD_LOST:
+ perf_event__process_lost(tool, event, sample, machine);
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+void thread__find_addr_map(struct thread *self,
+ struct machine *machine, u8 cpumode,
+ enum map_type type, u64 addr,
+ struct addr_location *al)
+{
+ struct map_groups *mg = &self->mg;
+
+ al->thread = self;
+ al->addr = addr;
+ al->cpumode = cpumode;
+ al->filtered = false;
+
+ if (machine == NULL) {
+ al->map = NULL;
+ return;
+ }
+
+ if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) {
+ al->level = 'k';
+ mg = &machine->kmaps;
+ } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) {
+ al->level = '.';
+ } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) {
+ al->level = 'g';
+ mg = &machine->kmaps;
+ } else {
+ /*
+ * 'u' means guest os user space.
+ * TODO: We don't support guest user space. Might support late.
+ */
+ if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest)
+ al->level = 'u';
+ else
+ al->level = 'H';
+ al->map = NULL;
+
+ if ((cpumode == PERF_RECORD_MISC_GUEST_USER ||
+ cpumode == PERF_RECORD_MISC_GUEST_KERNEL) &&
+ !perf_guest)
+ al->filtered = true;
+ if ((cpumode == PERF_RECORD_MISC_USER ||
+ cpumode == PERF_RECORD_MISC_KERNEL) &&
+ !perf_host)
+ al->filtered = true;
+
+ return;
+ }
+try_again:
+ al->map = map_groups__find(mg, type, al->addr);
+ if (al->map == NULL) {
+ /*
+ * If this is outside of all known maps, and is a negative
+ * address, try to look it up in the kernel dso, as it might be
+ * a vsyscall or vdso (which executes in user-mode).
+ *
+ * XXX This is nasty, we should have a symbol list in the
+ * "[vdso]" dso, but for now lets use the old trick of looking
+ * in the whole kernel symbol list.
+ */
+ if ((long long)al->addr < 0 &&
+ cpumode == PERF_RECORD_MISC_USER &&
+ machine && mg != &machine->kmaps) {
+ mg = &machine->kmaps;
+ goto try_again;
+ }
+ } else
+ al->addr = al->map->map_ip(al->map, al->addr);
+}
+
+void thread__find_addr_location(struct thread *thread, struct machine *machine,
+ u8 cpumode, enum map_type type, u64 addr,
+ struct addr_location *al,
+ symbol_filter_t filter)
+{
+ thread__find_addr_map(thread, machine, cpumode, type, addr, al);
+ if (al->map != NULL)
+ al->sym = map__find_symbol(al->map, al->addr, filter);
+ else
+ al->sym = NULL;
+}
+
+int perf_event__preprocess_sample(const union perf_event *event,
+ struct machine *machine,
+ struct addr_location *al,
+ struct perf_sample *sample,
+ symbol_filter_t filter)
+{
+ u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
+ struct thread *thread = machine__findnew_thread(machine, event->ip.pid);
+
+ if (thread == NULL)
+ return -1;
+
+ if (symbol_conf.comm_list &&
+ !strlist__has_entry(symbol_conf.comm_list, thread->comm))
+ goto out_filtered;
+
+ dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
+ /*
+ * Have we already created the kernel maps for this machine?
+ *
+ * This should have happened earlier, when we processed the kernel MMAP
+ * events, but for older perf.data files there was no such thing, so do
+ * it now.
+ */
+ if (cpumode == PERF_RECORD_MISC_KERNEL &&
+ machine->vmlinux_maps[MAP__FUNCTION] == NULL)
+ machine__create_kernel_maps(machine);
+
+ thread__find_addr_map(thread, machine, cpumode, MAP__FUNCTION,
+ event->ip.ip, al);
+ dump_printf(" ...... dso: %s\n",
+ al->map ? al->map->dso->long_name :
+ al->level == 'H' ? "[hypervisor]" : "<not found>");
+ al->sym = NULL;
+ al->cpu = sample->cpu;
+
+ if (al->map) {
+ struct dso *dso = al->map->dso;
+
+ if (symbol_conf.dso_list &&
+ (!dso || !(strlist__has_entry(symbol_conf.dso_list,
+ dso->short_name) ||
+ (dso->short_name != dso->long_name &&
+ strlist__has_entry(symbol_conf.dso_list,
+ dso->long_name)))))
+ goto out_filtered;
+
+ al->sym = map__find_symbol(al->map, al->addr, filter);
+ }
+
+ if (symbol_conf.sym_list && al->sym &&
+ !strlist__has_entry(symbol_conf.sym_list, al->sym->name))
+ goto out_filtered;
+
+ return 0;
+
+out_filtered:
+ al->filtered = true;
+ return 0;
+}