event_t ev = {
.header = {
.type = PERF_RECORD_MMAP,
- .misc = 0, /* Just like the kernel, see kernel/perf_event.c __perf_event_mmap */
+ /*
+ * Just like the kernel, see __perf_event_mmap
+ * in kernel/perf_event.c
+ */
+ .misc = PERF_RECORD_MISC_USER,
},
};
int n;
continue;
pbf += n + 3;
if (*pbf == 'x') { /* vm_exec */
+ u64 vm_pgoff;
char *execname = strchr(bf, '/');
/* Catch VDSO */
if (execname == NULL)
continue;
+ pbf += 3;
+ n = hex2u64(pbf, &vm_pgoff);
+ /* pgoff is in bytes, not pages */
+ if (n >= 0)
+ ev.mmap.pgoff = vm_pgoff << getpagesize();
+ else
+ ev.mmap.pgoff = 0;
+
size = strlen(execname);
execname[size - 1] = '\0'; /* Remove \n */
memcpy(ev.mmap.filename, execname, size);
}
int event__synthesize_modules(event__handler_t process,
- struct perf_session *session)
+ struct perf_session *session,
+ struct machine *machine)
{
struct rb_node *nd;
+ struct map_groups *kmaps = &machine->kmaps;
+ u16 misc;
+
+ /*
+ * kernel uses 0 for user space maps, see kernel/perf_event.c
+ * __perf_event_mmap
+ */
+ if (machine__is_host(machine))
+ misc = PERF_RECORD_MISC_KERNEL;
+ else
+ misc = PERF_RECORD_MISC_GUEST_KERNEL;
- for (nd = rb_first(&session->kmaps.maps[MAP__FUNCTION]);
+ for (nd = rb_first(&kmaps->maps[MAP__FUNCTION]);
nd; nd = rb_next(nd)) {
event_t ev;
size_t size;
size = ALIGN(pos->dso->long_name_len + 1, sizeof(u64));
memset(&ev, 0, sizeof(ev));
- ev.mmap.header.misc = 1; /* kernel uses 0 for user space maps, see kernel/perf_event.c __perf_event_mmap */
+ ev.mmap.header.misc = misc;
ev.mmap.header.type = PERF_RECORD_MMAP;
ev.mmap.header.size = (sizeof(ev.mmap) -
(sizeof(ev.mmap.filename) - size));
ev.mmap.start = pos->start;
ev.mmap.len = pos->end - pos->start;
+ ev.mmap.pid = machine->pid;
memcpy(ev.mmap.filename, pos->dso->long_name,
pos->dso->long_name_len + 1);
int event__synthesize_kernel_mmap(event__handler_t process,
struct perf_session *session,
+ 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;
+
event_t ev = {
.header = {
.type = PERF_RECORD_MMAP,
- .misc = 1, /* kernel uses 0 for user space maps, see kernel/perf_event.c __perf_event_mmap */
},
};
/*
*/
struct process_symbol_args args = { .name = symbol_name, };
- if (kallsyms__parse("/proc/kallsyms", &args, find_symbol_cb) <= 0)
+ 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
+ */
+ ev.header.misc = PERF_RECORD_MISC_KERNEL;
+ filename = "/proc/kallsyms";
+ } else {
+ ev.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(ev.mmap.filename, sizeof(ev.mmap.filename),
- "[kernel.kallsyms.%s]", symbol_name) + 1;
+ "%s%s", mmap_name, symbol_name) + 1;
size = ALIGN(size, sizeof(u64));
- ev.mmap.header.size = (sizeof(ev.mmap) - (sizeof(ev.mmap.filename) - size));
+ ev.mmap.header.size = (sizeof(ev.mmap) -
+ (sizeof(ev.mmap.filename) - size));
ev.mmap.pgoff = args.start;
- ev.mmap.start = session->vmlinux_maps[MAP__FUNCTION]->start;
- ev.mmap.len = session->vmlinux_maps[MAP__FUNCTION]->end - ev.mmap.start ;
+ ev.mmap.start = map->start;
+ ev.mmap.len = map->end - ev.mmap.start;
+ ev.mmap.pid = machine->pid;
return process(&ev, session);
}
return 0;
}
-int event__process_mmap(event_t *self, struct perf_session *session)
+static void event_set_kernel_mmap_len(struct map **maps, event_t *self)
+{
+ maps[MAP__FUNCTION]->start = self->mmap.start;
+ maps[MAP__FUNCTION]->end = self->mmap.start + self->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 = ~0UL;
+}
+
+static int event__process_kernel_mmap(event_t *self,
+ struct perf_session *session)
{
- struct thread *thread;
struct map *map;
+ char kmmap_prefix[PATH_MAX];
+ struct machine *machine;
+ enum dso_kernel_type kernel_type;
+ bool is_kernel_mmap;
+
+ machine = perf_session__findnew_machine(session, self->mmap.pid);
+ if (!machine) {
+ pr_err("Can't find id %d's machine\n", self->mmap.pid);
+ goto out_problem;
+ }
- dump_printf(" %d/%d: [%#Lx(%#Lx) @ %#Lx]: %s\n",
- self->mmap.pid, self->mmap.tid, self->mmap.start,
- self->mmap.len, self->mmap.pgoff, self->mmap.filename);
+ 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;
- if (self->mmap.pid == 0) {
- static const char kmmap_prefix[] = "[kernel.kallsyms.";
+ is_kernel_mmap = memcmp(self->mmap.filename,
+ kmmap_prefix,
+ strlen(kmmap_prefix)) == 0;
+ if (self->mmap.filename[0] == '/' ||
+ (!is_kernel_mmap && self->mmap.filename[0] == '[')) {
- if (self->mmap.filename[0] == '/') {
- char short_module_name[1024];
- char *name = strrchr(self->mmap.filename, '/'), *dot;
+ char short_module_name[1024];
+ char *name, *dot;
+ if (self->mmap.filename[0] == '/') {
+ name = strrchr(self->mmap.filename, '/');
if (name == NULL)
goto out_problem;
dot = strrchr(name, '.');
if (dot == NULL)
goto out_problem;
-
snprintf(short_module_name, sizeof(short_module_name),
- "[%.*s]", (int)(dot - name), name);
+ "[%.*s]", (int)(dot - name), name);
strxfrchar(short_module_name, '-', '_');
-
- map = perf_session__new_module_map(session,
- self->mmap.start,
- self->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->end = map->start + self->mmap.len;
- } else if (memcmp(self->mmap.filename, kmmap_prefix,
- sizeof(kmmap_prefix) - 1) == 0) {
- const char *symbol_name = (self->mmap.filename +
- sizeof(kmmap_prefix) - 1);
+ } else
+ strcpy(short_module_name, self->mmap.filename);
+
+ map = map_groups__new_module(&machine->kmaps,
+ self->mmap.start,
+ self->mmap.filename, machine);
+ if (map == NULL)
+ goto out_problem;
+
+ name = strdup(short_module_name);
+ if (name == NULL)
+ goto out_problem;
+
+ map->dso->short_name = name;
+ map->end = map->start + self->mmap.len;
+ } else if (is_kernel_mmap) {
+ const char *symbol_name = (self->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 (__map_groups__create_kernel_maps(&machine->kmaps,
+ machine->vmlinux_maps,
+ kernel) < 0)
+ goto out_problem;
+
+ event_set_kernel_mmap_len(machine->vmlinux_maps, self);
+ perf_session__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps,
+ symbol_name,
+ self->mmap.pgoff);
+ if (machine__is_default_guest(machine)) {
/*
- * Should be there already, from the build-id table in
- * the header.
+ * preload dso of guest kernel and modules
*/
- struct dso *kernel = __dsos__findnew(&dsos__kernel,
- "[kernel.kallsyms]");
- if (kernel == NULL)
- goto out_problem;
-
- kernel->kernel = 1;
- if (__perf_session__create_kernel_maps(session, kernel) < 0)
- goto out_problem;
+ dso__load(kernel, machine->vmlinux_maps[MAP__FUNCTION],
+ NULL);
+ }
+ }
+ return 0;
+out_problem:
+ return -1;
+}
- session->vmlinux_maps[MAP__FUNCTION]->start = self->mmap.start;
- session->vmlinux_maps[MAP__FUNCTION]->end = self->mmap.start + self->mmap.len;
+int event__process_mmap(event_t *self, struct perf_session *session)
+{
+ struct machine *machine;
+ struct thread *thread;
+ struct map *map;
+ u8 cpumode = self->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
+ int ret = 0;
- perf_session__set_kallsyms_ref_reloc_sym(session, symbol_name,
- self->mmap.pgoff);
- }
+ dump_printf(" %d/%d: [%#Lx(%#Lx) @ %#Lx]: %s\n",
+ self->mmap.pid, self->mmap.tid, self->mmap.start,
+ self->mmap.len, self->mmap.pgoff, self->mmap.filename);
+
+ if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL ||
+ cpumode == PERF_RECORD_MISC_KERNEL) {
+ ret = event__process_kernel_mmap(self, session);
+ if (ret < 0)
+ goto out_problem;
return 0;
}
thread = perf_session__findnew(session, self->mmap.pid);
- map = map__new(&self->mmap, MAP__FUNCTION,
- session->cwd, session->cwdlen);
+ machine = perf_session__find_host_machine(session);
+ map = map__new(&machine->user_dsos, self->mmap.start,
+ self->mmap.len, self->mmap.pgoff,
+ self->mmap.pid, self->mmap.filename,
+ MAP__FUNCTION, session->cwd, session->cwdlen);
if (thread == NULL || map == NULL)
goto out_problem;
void thread__find_addr_map(struct thread *self,
struct perf_session *session, u8 cpumode,
- enum map_type type, u64 addr,
+ enum map_type type, pid_t pid, u64 addr,
struct addr_location *al)
{
struct map_groups *mg = &self->mg;
+ struct machine *machine = NULL;
al->thread = self;
al->addr = addr;
+ al->cpumode = cpumode;
+ al->filtered = false;
- if (cpumode & PERF_RECORD_MISC_KERNEL) {
+ if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) {
al->level = 'k';
- mg = &session->kmaps;
- } else if (cpumode & PERF_RECORD_MISC_USER)
+ machine = perf_session__find_host_machine(session);
+ mg = &machine->kmaps;
+ } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) {
al->level = '.';
- else {
- al->level = 'H';
+ machine = perf_session__find_host_machine(session);
+ } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) {
+ al->level = 'g';
+ machine = perf_session__find_machine(session, pid);
+ if (!machine) {
+ al->map = NULL;
+ return;
+ }
+ 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:
* "[vdso]" dso, but for now lets use the old trick of looking
* in the whole kernel symbol list.
*/
- if ((long long)al->addr < 0 && mg != &session->kmaps) {
- mg = &session->kmaps;
+ if ((long long)al->addr < 0 &&
+ cpumode == PERF_RECORD_MISC_KERNEL &&
+ machine && mg != &machine->kmaps) {
+ mg = &machine->kmaps;
goto try_again;
}
} else
void thread__find_addr_location(struct thread *self,
struct perf_session *session, u8 cpumode,
- enum map_type type, u64 addr,
+ enum map_type type, pid_t pid, u64 addr,
struct addr_location *al,
symbol_filter_t filter)
{
- thread__find_addr_map(self, session, cpumode, type, addr, al);
+ thread__find_addr_map(self, session, cpumode, type, pid, addr, al);
if (al->map != NULL)
al->sym = map__find_symbol(al->map, al->addr, filter);
else
dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
- thread__find_addr_location(thread, session, cpumode, MAP__FUNCTION,
- self->ip.ip, al, filter);
+ thread__find_addr_map(thread, session, cpumode, MAP__FUNCTION,
+ self->ip.pid, self->ip.ip, al);
dump_printf(" ...... dso: %s\n",
al->map ? al->map->dso->long_name :
al->level == 'H' ? "[hypervisor]" : "<not found>");
- /*
- * We have to do this here as we may have a dso with no symbol hit that
- * has a name longer than the ones with symbols sampled.
- */
- if (al->map && !sort_dso.elide && !al->map->dso->slen_calculated)
- dso__calc_col_width(al->map->dso);
-
- if (symbol_conf.dso_list &&
- (!al->map || !al->map->dso ||
- !(strlist__has_entry(symbol_conf.dso_list, al->map->dso->short_name) ||
- (al->map->dso->short_name != al->map->dso->long_name &&
- strlist__has_entry(symbol_conf.dso_list, al->map->dso->long_name)))))
- goto out_filtered;
+ al->sym = NULL;
+
+ if (al->map) {
+ if (symbol_conf.dso_list &&
+ (!al->map || !al->map->dso ||
+ !(strlist__has_entry(symbol_conf.dso_list,
+ al->map->dso->short_name) ||
+ (al->map->dso->short_name != al->map->dso->long_name &&
+ strlist__has_entry(symbol_conf.dso_list,
+ al->map->dso->long_name)))))
+ goto out_filtered;
+ /*
+ * We have to do this here as we may have a dso with no symbol
+ * hit that has a name longer than the ones with symbols
+ * sampled.
+ */
+ if (!sort_dso.elide && !al->map->dso->slen_calculated)
+ dso__calc_col_width(al->map->dso);
+
+ 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;
- al->filtered = false;
return 0;
out_filtered:
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff