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-rw-r--r--tools/perf/util/machine.c1150
1 files changed, 660 insertions, 490 deletions
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index 7d4194ffc5b0..527517db3182 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -16,6 +16,7 @@
#include "map_symbol.h"
#include "branch.h"
#include "mem-events.h"
+#include "path.h"
#include "srcline.h"
#include "symbol.h"
#include "sort.h"
@@ -34,6 +35,7 @@
#include "bpf-event.h"
#include <internal/lib.h> // page_size
#include "cgroup.h"
+#include "arm64-frame-pointer-unwind-support.h"
#include <linux/ctype.h>
#include <symbol/kallsyms.h>
@@ -41,11 +43,9 @@
#include <linux/string.h>
#include <linux/zalloc.h>
-static void __machine__remove_thread(struct machine *machine, struct thread *th, bool lock);
-
static struct dso *machine__kernel_dso(struct machine *machine)
{
- return machine->vmlinux_map->dso;
+ return map__dso(machine->vmlinux_map);
}
static void dsos__init(struct dsos *dsos)
@@ -55,20 +55,6 @@ static void dsos__init(struct dsos *dsos)
init_rwsem(&dsos->lock);
}
-static void machine__threads_init(struct machine *machine)
-{
- int i;
-
- for (i = 0; i < THREADS__TABLE_SIZE; i++) {
- struct threads *threads = &machine->threads[i];
- threads->entries = RB_ROOT_CACHED;
- init_rwsem(&threads->lock);
- threads->nr = 0;
- INIT_LIST_HEAD(&threads->dead);
- threads->last_match = NULL;
- }
-}
-
static int machine__set_mmap_name(struct machine *machine)
{
if (machine__is_host(machine))
@@ -82,16 +68,27 @@ static int machine__set_mmap_name(struct machine *machine)
return machine->mmap_name ? 0 : -ENOMEM;
}
+static void thread__set_guest_comm(struct thread *thread, pid_t pid)
+{
+ char comm[64];
+
+ snprintf(comm, sizeof(comm), "[guest/%d]", pid);
+ thread__set_comm(thread, comm, 0);
+}
+
int machine__init(struct machine *machine, const char *root_dir, pid_t pid)
{
int err = -ENOMEM;
memset(machine, 0, sizeof(*machine));
- maps__init(&machine->kmaps, machine);
+ machine->kmaps = maps__new(machine);
+ if (machine->kmaps == NULL)
+ return -ENOMEM;
+
RB_CLEAR_NODE(&machine->rb_node);
dsos__init(&machine->dsos);
- machine__threads_init(machine);
+ threads__init(&machine->threads);
machine->vdso_info = NULL;
machine->env = NULL;
@@ -106,7 +103,7 @@ int machine__init(struct machine *machine, const char *root_dir, pid_t pid)
machine->root_dir = strdup(root_dir);
if (machine->root_dir == NULL)
- return -ENOMEM;
+ goto out;
if (machine__set_mmap_name(machine))
goto out;
@@ -114,13 +111,11 @@ int machine__init(struct machine *machine, const char *root_dir, pid_t pid)
if (pid != HOST_KERNEL_ID) {
struct thread *thread = machine__findnew_thread(machine, -1,
pid);
- char comm[64];
if (thread == NULL)
goto out;
- snprintf(comm, sizeof(comm), "[guest/%d]", pid);
- thread__set_comm(thread, comm, 0);
+ thread__set_guest_comm(thread, pid);
thread__put(thread);
}
@@ -129,6 +124,7 @@ int machine__init(struct machine *machine, const char *root_dir, pid_t pid)
out:
if (err) {
+ zfree(&machine->kmaps);
zfree(&machine->root_dir);
zfree(&machine->mmap_name);
}
@@ -193,54 +189,24 @@ static void dsos__exit(struct dsos *dsos)
void machine__delete_threads(struct machine *machine)
{
- struct rb_node *nd;
- int i;
-
- for (i = 0; i < THREADS__TABLE_SIZE; i++) {
- struct threads *threads = &machine->threads[i];
- down_write(&threads->lock);
- nd = rb_first_cached(&threads->entries);
- while (nd) {
- struct thread *t = rb_entry(nd, struct thread, rb_node);
-
- nd = rb_next(nd);
- __machine__remove_thread(machine, t, false);
- }
- up_write(&threads->lock);
- }
+ threads__remove_all_threads(&machine->threads);
}
void machine__exit(struct machine *machine)
{
- int i;
-
if (machine == NULL)
return;
machine__destroy_kernel_maps(machine);
- maps__exit(&machine->kmaps);
+ maps__zput(machine->kmaps);
dsos__exit(&machine->dsos);
machine__exit_vdso(machine);
zfree(&machine->root_dir);
zfree(&machine->mmap_name);
zfree(&machine->current_tid);
+ zfree(&machine->kallsyms_filename);
- for (i = 0; i < THREADS__TABLE_SIZE; i++) {
- struct threads *threads = &machine->threads[i];
- struct thread *thread, *n;
- /*
- * Forget about the dead, at this point whatever threads were
- * left in the dead lists better have a reference count taken
- * by who is using them, and then, when they drop those references
- * and it finally hits zero, thread__put() will check and see that
- * its not in the dead threads list and will not try to remove it
- * from there, just calling thread__delete() straight away.
- */
- list_for_each_entry_safe(thread, n, &threads->dead, node)
- list_del_init(&thread->node);
-
- exit_rwsem(&threads->lock);
- }
+ threads__exit(&machine->threads);
}
void machine__delete(struct machine *machine)
@@ -293,6 +259,8 @@ struct machine *machines__add(struct machines *machines, pid_t pid,
rb_link_node(&machine->rb_node, parent, p);
rb_insert_color_cached(&machine->rb_node, &machines->guests, leftmost);
+ machine->machines = machines;
+
return machine;
}
@@ -369,6 +337,102 @@ out:
return machine;
}
+struct machine *machines__find_guest(struct machines *machines, pid_t pid)
+{
+ struct machine *machine = machines__find(machines, pid);
+
+ if (!machine)
+ machine = machines__findnew(machines, DEFAULT_GUEST_KERNEL_ID);
+ return machine;
+}
+
+/*
+ * A common case for KVM test programs is that the test program acts as the
+ * hypervisor, creating, running and destroying the virtual machine, and
+ * providing the guest object code from its own object code. In this case,
+ * the VM is not running an OS, but only the functions loaded into it by the
+ * hypervisor test program, and conveniently, loaded at the same virtual
+ * addresses.
+ *
+ * Normally to resolve addresses, MMAP events are needed to map addresses
+ * back to the object code and debug symbols for that object code.
+ *
+ * Currently, there is no way to get such mapping information from guests
+ * but, in the scenario described above, the guest has the same mappings
+ * as the hypervisor, so support for that scenario can be achieved.
+ *
+ * To support that, copy the host thread's maps to the guest thread's maps.
+ * Note, we do not discover the guest until we encounter a guest event,
+ * which works well because it is not until then that we know that the host
+ * thread's maps have been set up.
+ *
+ * This function returns the guest thread. Apart from keeping the data
+ * structures sane, using a thread belonging to the guest machine, instead
+ * of the host thread, allows it to have its own comm (refer
+ * thread__set_guest_comm()).
+ */
+static struct thread *findnew_guest_code(struct machine *machine,
+ struct machine *host_machine,
+ pid_t pid)
+{
+ struct thread *host_thread;
+ struct thread *thread;
+ int err;
+
+ if (!machine)
+ return NULL;
+
+ thread = machine__findnew_thread(machine, -1, pid);
+ if (!thread)
+ return NULL;
+
+ /* Assume maps are set up if there are any */
+ if (!maps__empty(thread__maps(thread)))
+ return thread;
+
+ host_thread = machine__find_thread(host_machine, -1, pid);
+ if (!host_thread)
+ goto out_err;
+
+ thread__set_guest_comm(thread, pid);
+
+ /*
+ * Guest code can be found in hypervisor process at the same address
+ * so copy host maps.
+ */
+ err = maps__copy_from(thread__maps(thread), thread__maps(host_thread));
+ thread__put(host_thread);
+ if (err)
+ goto out_err;
+
+ return thread;
+
+out_err:
+ thread__zput(thread);
+ return NULL;
+}
+
+struct thread *machines__findnew_guest_code(struct machines *machines, pid_t pid)
+{
+ struct machine *host_machine = machines__find(machines, HOST_KERNEL_ID);
+ struct machine *machine = machines__findnew(machines, pid);
+
+ return findnew_guest_code(machine, host_machine, pid);
+}
+
+struct thread *machine__findnew_guest_code(struct machine *machine, pid_t pid)
+{
+ struct machines *machines = machine->machines;
+ struct machine *host_machine;
+
+ if (!machines)
+ return NULL;
+
+ host_machine = machines__find(machines, HOST_KERNEL_ID);
+
+ return findnew_guest_code(machine, host_machine, pid);
+}
+
void machines__process_guests(struct machines *machines,
machine__process_t process, void *data)
{
@@ -401,192 +465,116 @@ static void machine__update_thread_pid(struct machine *machine,
{
struct thread *leader;
- if (pid == th->pid_ || pid == -1 || th->pid_ != -1)
+ if (pid == thread__pid(th) || pid == -1 || thread__pid(th) != -1)
return;
- th->pid_ = pid;
+ thread__set_pid(th, pid);
- if (th->pid_ == th->tid)
+ if (thread__pid(th) == thread__tid(th))
return;
- leader = __machine__findnew_thread(machine, th->pid_, th->pid_);
+ leader = machine__findnew_thread(machine, thread__pid(th), thread__pid(th));
if (!leader)
goto out_err;
- if (!leader->maps)
- leader->maps = maps__new(machine);
+ if (!thread__maps(leader))
+ thread__set_maps(leader, maps__new(machine));
- if (!leader->maps)
+ if (!thread__maps(leader))
goto out_err;
- if (th->maps == leader->maps)
- return;
+ if (thread__maps(th) == thread__maps(leader))
+ goto out_put;
- if (th->maps) {
+ if (thread__maps(th)) {
/*
* Maps are created from MMAP events which provide the pid and
* tid. Consequently there never should be any maps on a thread
* with an unknown pid. Just print an error if there are.
*/
- if (!maps__empty(th->maps))
+ if (!maps__empty(thread__maps(th)))
pr_err("Discarding thread maps for %d:%d\n",
- th->pid_, th->tid);
- maps__put(th->maps);
+ thread__pid(th), thread__tid(th));
+ maps__put(thread__maps(th));
}
- th->maps = maps__get(leader->maps);
+ thread__set_maps(th, maps__get(thread__maps(leader)));
out_put:
thread__put(leader);
return;
out_err:
- pr_err("Failed to join map groups for %d:%d\n", th->pid_, th->tid);
+ pr_err("Failed to join map groups for %d:%d\n", thread__pid(th), thread__tid(th));
goto out_put;
}
/*
- * Front-end cache - TID lookups come in blocks,
- * so most of the time we dont have to look up
- * the full rbtree:
- */
-static struct thread*
-__threads__get_last_match(struct threads *threads, struct machine *machine,
- int pid, int tid)
-{
- struct thread *th;
-
- th = threads->last_match;
- if (th != NULL) {
- if (th->tid == tid) {
- machine__update_thread_pid(machine, th, pid);
- return thread__get(th);
- }
-
- threads->last_match = NULL;
- }
-
- return NULL;
-}
-
-static struct thread*
-threads__get_last_match(struct threads *threads, struct machine *machine,
- int pid, int tid)
-{
- struct thread *th = NULL;
-
- if (perf_singlethreaded)
- th = __threads__get_last_match(threads, machine, pid, tid);
-
- return th;
-}
-
-static void
-__threads__set_last_match(struct threads *threads, struct thread *th)
-{
- threads->last_match = th;
-}
-
-static void
-threads__set_last_match(struct threads *threads, struct thread *th)
-{
- if (perf_singlethreaded)
- __threads__set_last_match(threads, th);
-}
-
-/*
* Caller must eventually drop thread->refcnt returned with a successful
* lookup/new thread inserted.
*/
-static struct thread *____machine__findnew_thread(struct machine *machine,
- struct threads *threads,
- pid_t pid, pid_t tid,
- bool create)
+static struct thread *__machine__findnew_thread(struct machine *machine,
+ pid_t pid,
+ pid_t tid,
+ bool create)
{
- struct rb_node **p = &threads->entries.rb_root.rb_node;
- struct rb_node *parent = NULL;
- struct thread *th;
- bool leftmost = true;
+ struct thread *th = threads__find(&machine->threads, tid);
+ bool created;
- th = threads__get_last_match(threads, machine, pid, tid);
- if (th)
+ if (th) {
+ machine__update_thread_pid(machine, th, pid);
return th;
-
- while (*p != NULL) {
- parent = *p;
- th = rb_entry(parent, struct thread, rb_node);
-
- if (th->tid == tid) {
- threads__set_last_match(threads, th);
- machine__update_thread_pid(machine, th, pid);
- return thread__get(th);
- }
-
- if (tid < th->tid)
- p = &(*p)->rb_left;
- else {
- p = &(*p)->rb_right;
- leftmost = false;
- }
}
-
if (!create)
return NULL;
- th = thread__new(pid, tid);
- if (th != NULL) {
- rb_link_node(&th->rb_node, parent, p);
- rb_insert_color_cached(&th->rb_node, &threads->entries, leftmost);
-
+ th = threads__findnew(&machine->threads, pid, tid, &created);
+ if (created) {
/*
- * We have to initialize maps separately after rb tree is updated.
+ * We have to initialize maps separately after rb tree is
+ * updated.
*
- * The reason is that we call machine__findnew_thread
- * within thread__init_maps to find the thread
- * leader and that would screwed the rb tree.
+ * The reason is that we call machine__findnew_thread within
+ * thread__init_maps to find the thread leader and that would
+ * screwed the rb tree.
*/
if (thread__init_maps(th, machine)) {
- rb_erase_cached(&th->rb_node, &threads->entries);
- RB_CLEAR_NODE(&th->rb_node);
+ pr_err("Thread init failed thread %d\n", pid);
+ threads__remove(&machine->threads, th);
thread__put(th);
return NULL;
}
- /*
- * It is now in the rbtree, get a ref
- */
- thread__get(th);
- threads__set_last_match(threads, th);
- ++threads->nr;
- }
+ } else
+ machine__update_thread_pid(machine, th, pid);
return th;
}
-struct thread *__machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid)
+struct thread *machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid)
{
- return ____machine__findnew_thread(machine, machine__threads(machine, tid), pid, tid, true);
+ return __machine__findnew_thread(machine, pid, tid, /*create=*/true);
}
-struct thread *machine__findnew_thread(struct machine *machine, pid_t pid,
- pid_t tid)
+struct thread *machine__find_thread(struct machine *machine, pid_t pid,
+ pid_t tid)
{
- struct threads *threads = machine__threads(machine, tid);
- struct thread *th;
-
- down_write(&threads->lock);
- th = __machine__findnew_thread(machine, pid, tid);
- up_write(&threads->lock);
- return th;
+ return __machine__findnew_thread(machine, pid, tid, /*create=*/false);
}
-struct thread *machine__find_thread(struct machine *machine, pid_t pid,
- pid_t tid)
+/*
+ * Threads are identified by pid and tid, and the idle task has pid == tid == 0.
+ * So here a single thread is created for that, but actually there is a separate
+ * idle task per cpu, so there should be one 'struct thread' per cpu, but there
+ * is only 1. That causes problems for some tools, requiring workarounds. For
+ * example get_idle_thread() in builtin-sched.c, or thread_stack__per_cpu().
+ */
+struct thread *machine__idle_thread(struct machine *machine)
{
- struct threads *threads = machine__threads(machine, tid);
- struct thread *th;
+ struct thread *thread = machine__findnew_thread(machine, 0, 0);
- down_read(&threads->lock);
- th = ____machine__findnew_thread(machine, threads, pid, tid, false);
- up_read(&threads->lock);
- return th;
+ if (!thread || thread__set_comm(thread, "swapper", 0) ||
+ thread__set_namespaces(thread, 0, NULL))
+ pr_err("problem inserting idle task for machine pid %d\n", machine->pid);
+
+ return thread;
}
struct comm *machine__thread_exec_comm(struct machine *machine,
@@ -728,6 +716,14 @@ int machine__process_itrace_start_event(struct machine *machine __maybe_unused,
return 0;
}
+int machine__process_aux_output_hw_id_event(struct machine *machine __maybe_unused,
+ union perf_event *event)
+{
+ if (dump_trace)
+ perf_event__fprintf_aux_output_hw_id(event, stdout);
+ return 0;
+}
+
int machine__process_switch_event(struct machine *machine __maybe_unused,
union perf_event *event)
{
@@ -741,57 +737,82 @@ static int machine__process_ksymbol_register(struct machine *machine,
struct perf_sample *sample __maybe_unused)
{
struct symbol *sym;
- struct map *map = maps__find(&machine->kmaps, event->ksymbol.addr);
+ struct dso *dso;
+ struct map *map = maps__find(machine__kernel_maps(machine), event->ksymbol.addr);
+ int err = 0;
if (!map) {
- struct dso *dso = dso__new(event->ksymbol.name);
+ dso = dso__new(event->ksymbol.name);
- if (dso) {
- dso->kernel = DSO_SPACE__KERNEL;
- map = map__new2(0, dso);
+ if (!dso) {
+ err = -ENOMEM;
+ goto out;
}
-
- if (!dso || !map) {
- dso__put(dso);
- return -ENOMEM;
+ dso->kernel = DSO_SPACE__KERNEL;
+ map = map__new2(0, dso);
+ dso__put(dso);
+ if (!map) {
+ err = -ENOMEM;
+ goto out;
}
-
if (event->ksymbol.ksym_type == PERF_RECORD_KSYMBOL_TYPE_OOL) {
- map->dso->binary_type = DSO_BINARY_TYPE__OOL;
- map->dso->data.file_size = event->ksymbol.len;
- dso__set_loaded(map->dso);
+ dso->binary_type = DSO_BINARY_TYPE__OOL;
+ dso->data.file_size = event->ksymbol.len;
+ dso__set_loaded(dso);
+ }
+
+ map__set_start(map, event->ksymbol.addr);
+ map__set_end(map, map__start(map) + event->ksymbol.len);
+ err = maps__insert(machine__kernel_maps(machine), map);
+ if (err) {
+ err = -ENOMEM;
+ goto out;
}
- map->start = event->ksymbol.addr;
- map->end = map->start + event->ksymbol.len;
- maps__insert(&machine->kmaps, map);
dso__set_loaded(dso);
if (is_bpf_image(event->ksymbol.name)) {
dso->binary_type = DSO_BINARY_TYPE__BPF_IMAGE;
dso__set_long_name(dso, "", false);
}
+ } else {
+ dso = map__dso(map);
}
- sym = symbol__new(map->map_ip(map, map->start),
+ sym = symbol__new(map__map_ip(map, map__start(map)),
event->ksymbol.len,
0, 0, event->ksymbol.name);
- if (!sym)
- return -ENOMEM;
- dso__insert_symbol(map->dso, sym);
- return 0;
+ if (!sym) {
+ err = -ENOMEM;
+ goto out;
+ }
+ dso__insert_symbol(dso, sym);
+out:
+ map__put(map);
+ return err;
}
static int machine__process_ksymbol_unregister(struct machine *machine,
union perf_event *event,
struct perf_sample *sample __maybe_unused)
{
+ struct symbol *sym;
struct map *map;
- map = maps__find(&machine->kmaps, event->ksymbol.addr);
- if (map)
- maps__remove(&machine->kmaps, map);
+ map = maps__find(machine__kernel_maps(machine), event->ksymbol.addr);
+ if (!map)
+ return 0;
+
+ if (!RC_CHK_EQUAL(map, machine->vmlinux_map))
+ maps__remove(machine__kernel_maps(machine), map);
+ else {
+ struct dso *dso = map__dso(map);
+ sym = dso__find_symbol(dso, map__map_ip(map, map__start(map)));
+ if (sym)
+ dso__delete_symbol(dso, sym);
+ }
+ map__put(map);
return 0;
}
@@ -811,21 +832,22 @@ int machine__process_ksymbol(struct machine *machine __maybe_unused,
int machine__process_text_poke(struct machine *machine, union perf_event *event,
struct perf_sample *sample __maybe_unused)
{
- struct map *map = maps__find(&machine->kmaps, event->text_poke.addr);
+ struct map *map = maps__find(machine__kernel_maps(machine), event->text_poke.addr);
u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
+ struct dso *dso = map ? map__dso(map) : NULL;
if (dump_trace)
perf_event__fprintf_text_poke(event, machine, stdout);
if (!event->text_poke.new_len)
- return 0;
+ goto out;
if (cpumode != PERF_RECORD_MISC_KERNEL) {
pr_debug("%s: unsupported cpumode - ignoring\n", __func__);
- return 0;
+ goto out;
}
- if (map && map->dso) {
+ if (dso) {
u8 *new_bytes = event->text_poke.bytes + event->text_poke.old_len;
int ret;
@@ -834,7 +856,7 @@ int machine__process_text_poke(struct machine *machine, union perf_event *event,
* must be done prior to using kernel maps.
*/
map__load(map);
- ret = dso__data_write_cache_addr(map->dso, map, machine,
+ ret = dso__data_write_cache_addr(dso, map, machine,
event->text_poke.addr,
new_bytes,
event->text_poke.new_len);
@@ -845,7 +867,8 @@ int machine__process_text_poke(struct machine *machine, union perf_event *event,
pr_debug("Failed to find kernel text poke address map for %#" PRI_lx64 "\n",
event->text_poke.addr);
}
-
+out:
+ map__put(map);
return 0;
}
@@ -855,6 +878,7 @@ static struct map *machine__addnew_module_map(struct machine *machine, u64 start
struct map *map = NULL;
struct kmod_path m;
struct dso *dso;
+ int err;
if (kmod_path__parse_name(&m, filename))
return NULL;
@@ -867,10 +891,12 @@ static struct map *machine__addnew_module_map(struct machine *machine, u64 start
if (map == NULL)
goto out;
- maps__insert(&machine->kmaps, map);
-
- /* Put the map here because maps__insert alread got it */
- map__put(map);
+ err = maps__insert(machine__kernel_maps(machine), map);
+ /* If maps__insert failed, return NULL. */
+ if (err) {
+ map__put(map);
+ map = NULL;
+ }
out:
/* put the dso here, corresponding to machine__findnew_module_dso */
dso__put(dso);
@@ -930,29 +956,30 @@ size_t machine__fprintf_vmlinux_path(struct machine *machine, FILE *fp)
return printed;
}
-size_t machine__fprintf(struct machine *machine, FILE *fp)
-{
- struct rb_node *nd;
- size_t ret;
- int i;
-
- for (i = 0; i < THREADS__TABLE_SIZE; i++) {
- struct threads *threads = &machine->threads[i];
-
- down_read(&threads->lock);
+struct machine_fprintf_cb_args {
+ FILE *fp;
+ size_t printed;
+};
- ret = fprintf(fp, "Threads: %u\n", threads->nr);
+static int machine_fprintf_cb(struct thread *thread, void *data)
+{
+ struct machine_fprintf_cb_args *args = data;
- for (nd = rb_first_cached(&threads->entries); nd;
- nd = rb_next(nd)) {
- struct thread *pos = rb_entry(nd, struct thread, rb_node);
+ /* TODO: handle fprintf errors. */
+ args->printed += thread__fprintf(thread, args->fp);
+ return 0;
+}
- ret += thread__fprintf(pos, fp);
- }
+size_t machine__fprintf(struct machine *machine, FILE *fp)
+{
+ struct machine_fprintf_cb_args args = {
+ .fp = fp,
+ .printed = 0,
+ };
+ size_t ret = fprintf(fp, "Threads: %zu\n", threads__nr(&machine->threads));
- up_read(&threads->lock);
- }
- return ret;
+ machine__for_each_thread(machine, machine_fprintf_cb, &args);
+ return ret + args.printed;
}
static struct dso *machine__get_kernel(struct machine *machine)
@@ -981,10 +1008,6 @@ static struct dso *machine__get_kernel(struct machine *machine)
return kernel;
}
-struct process_args {
- u64 start;
-};
-
void machine__get_kallsyms_filename(struct machine *machine, char *buf,
size_t bufsz)
{
@@ -1028,7 +1051,9 @@ static int machine__get_running_kernel_start(struct machine *machine,
*start = addr;
- err = kallsyms__get_function_start(filename, "_etext", &addr);
+ err = kallsyms__get_symbol_start(filename, "_edata", &addr);
+ if (err)
+ err = kallsyms__get_function_start(filename, "_etext", &addr);
if (!err)
*end = addr;
@@ -1041,26 +1066,29 @@ int machine__create_extra_kernel_map(struct machine *machine,
{
struct kmap *kmap;
struct map *map;
+ int err;
map = map__new2(xm->start, kernel);
if (!map)
- return -1;
+ return -ENOMEM;
- map->end = xm->end;
- map->pgoff = xm->pgoff;
+ map__set_end(map, xm->end);
+ map__set_pgoff(map, xm->pgoff);
kmap = map__kmap(map);
strlcpy(kmap->name, xm->name, KMAP_NAME_LEN);
- maps__insert(&machine->kmaps, map);
+ err = maps__insert(machine__kernel_maps(machine), map);
- pr_debug2("Added extra kernel map %s %" PRIx64 "-%" PRIx64 "\n",
- kmap->name, map->start, map->end);
+ if (!err) {
+ pr_debug2("Added extra kernel map %s %" PRIx64 "-%" PRIx64 "\n",
+ kmap->name, map__start(map), map__end(map));
+ }
map__put(map);
- return 0;
+ return err;
}
static u64 find_entry_trampoline(struct dso *dso)
@@ -1094,33 +1122,47 @@ static u64 find_entry_trampoline(struct dso *dso)
#define X86_64_CPU_ENTRY_AREA_SIZE 0x2c000
#define X86_64_ENTRY_TRAMPOLINE 0x6000
+struct machine__map_x86_64_entry_trampolines_args {
+ struct maps *kmaps;
+ bool found;
+};
+
+static int machine__map_x86_64_entry_trampolines_cb(struct map *map, void *data)
+{
+ struct machine__map_x86_64_entry_trampolines_args *args = data;
+ struct map *dest_map;
+ struct kmap *kmap = __map__kmap(map);
+
+ if (!kmap || !is_entry_trampoline(kmap->name))
+ return 0;
+
+ dest_map = maps__find(args->kmaps, map__pgoff(map));
+ if (RC_CHK_ACCESS(dest_map) != RC_CHK_ACCESS(map))
+ map__set_pgoff(map, map__map_ip(dest_map, map__pgoff(map)));
+
+ map__put(dest_map);
+ args->found = true;
+ return 0;
+}
+
/* Map x86_64 PTI entry trampolines */
int machine__map_x86_64_entry_trampolines(struct machine *machine,
struct dso *kernel)
{
- struct maps *kmaps = &machine->kmaps;
+ struct machine__map_x86_64_entry_trampolines_args args = {
+ .kmaps = machine__kernel_maps(machine),
+ .found = false,
+ };
int nr_cpus_avail, cpu;
- bool found = false;
- struct map *map;
u64 pgoff;
/*
* In the vmlinux case, pgoff is a virtual address which must now be
* mapped to a vmlinux offset.
*/
- maps__for_each_entry(kmaps, map) {
- struct kmap *kmap = __map__kmap(map);
- struct map *dest_map;
+ maps__for_each_map(args.kmaps, machine__map_x86_64_entry_trampolines_cb, &args);
- if (!kmap || !is_entry_trampoline(kmap->name))
- continue;
-
- dest_map = maps__find(kmaps, map->pgoff);
- if (dest_map != map)
- map->pgoff = dest_map->map_ip(dest_map, map->pgoff);
- found = true;
- }
- if (found || machine->trampolines_mapped)
+ if (args.found || machine->trampolines_mapped)
return 0;
pgoff = find_entry_trampoline(kernel);
@@ -1163,13 +1205,13 @@ __machine__create_kernel_maps(struct machine *machine, struct dso *kernel)
/* In case of renewal the kernel map, destroy previous one */
machine__destroy_kernel_maps(machine);
+ map__put(machine->vmlinux_map);
machine->vmlinux_map = map__new2(0, kernel);
if (machine->vmlinux_map == NULL)
- return -1;
+ return -ENOMEM;
- machine->vmlinux_map->map_ip = machine->vmlinux_map->unmap_ip = identity__map_ip;
- maps__insert(&machine->kmaps, machine->vmlinux_map);
- return 0;
+ map__set_mapping_type(machine->vmlinux_map, MAPPING_TYPE__IDENTITY);
+ return maps__insert(machine__kernel_maps(machine), machine->vmlinux_map);
}
void machine__destroy_kernel_maps(struct machine *machine)
@@ -1181,7 +1223,7 @@ void machine__destroy_kernel_maps(struct machine *machine)
return;
kmap = map__kmap(map);
- maps__remove(&machine->kmaps, map);
+ maps__remove(machine__kernel_maps(machine), map);
if (kmap && kmap->ref_reloc_sym) {
zfree((char **)&kmap->ref_reloc_sym->name);
zfree(&kmap->ref_reloc_sym);
@@ -1267,16 +1309,17 @@ int machines__create_kernel_maps(struct machines *machines, pid_t pid)
int machine__load_kallsyms(struct machine *machine, const char *filename)
{
struct map *map = machine__kernel_map(machine);
- int ret = __dso__load_kallsyms(map->dso, filename, map, true);
+ struct dso *dso = map__dso(map);
+ int ret = __dso__load_kallsyms(dso, filename, map, true);
if (ret > 0) {
- dso__set_loaded(map->dso);
+ dso__set_loaded(dso);
/*
* Since /proc/kallsyms will have multiple sessions for the
* kernel, with modules between them, fixup the end of all
* sections.
*/
- maps__fixup_end(&machine->kmaps);
+ maps__fixup_end(machine__kernel_maps(machine));
}
return ret;
@@ -1285,10 +1328,11 @@ int machine__load_kallsyms(struct machine *machine, const char *filename)
int machine__load_vmlinux_path(struct machine *machine)
{
struct map *map = machine__kernel_map(machine);
- int ret = dso__load_vmlinux_path(map->dso, map);
+ struct dso *dso = map__dso(map);
+ int ret = dso__load_vmlinux_path(dso, map);
if (ret > 0)
- dso__set_loaded(map->dso);
+ dso__set_loaded(dso);
return ret;
}
@@ -1330,27 +1374,31 @@ static bool is_kmod_dso(struct dso *dso)
static int maps__set_module_path(struct maps *maps, const char *path, struct kmod_path *m)
{
char *long_name;
+ struct dso *dso;
struct map *map = maps__find_by_name(maps, m->name);
if (map == NULL)
return 0;
long_name = strdup(path);
- if (long_name == NULL)
+ if (long_name == NULL) {
+ map__put(map);
return -ENOMEM;
+ }
- dso__set_long_name(map->dso, long_name, true);
- dso__kernel_module_get_build_id(map->dso, "");
+ dso = map__dso(map);
+ dso__set_long_name(dso, long_name, true);
+ dso__kernel_module_get_build_id(dso, "");
/*
* Full name could reveal us kmod compression, so
* we need to update the symtab_type if needed.
*/
- if (m->comp && is_kmod_dso(map->dso)) {
- map->dso->symtab_type++;
- map->dso->comp = m->comp;
+ if (m->comp && is_kmod_dso(dso)) {
+ dso->symtab_type++;
+ dso->comp = m->comp;
}
-
+ map__put(map);
return 0;
}
@@ -1370,7 +1418,7 @@ static int maps__set_modules_path_dir(struct maps *maps, const char *dir_name, i
struct stat st;
/*sshfs might return bad dent->d_type, so we have to stat*/
- snprintf(path, sizeof(path), "%s/%s", dir_name, dent->d_name);
+ path__join(path, sizeof(path), dir_name, dent->d_name);
if (stat(path, &st))
continue;
@@ -1424,7 +1472,7 @@ static int machine__set_modules_path(struct machine *machine)
machine->root_dir, version);
free(version);
- return maps__set_modules_path_dir(&machine->kmaps, modules_path, 0);
+ return maps__set_modules_path_dir(machine__kernel_maps(machine), modules_path, 0);
}
int __weak arch__fix_module_text_start(u64 *start __maybe_unused,
u64 *size __maybe_unused,
@@ -1445,10 +1493,10 @@ static int machine__create_module(void *arg, const char *name, u64 start,
map = machine__addnew_module_map(machine, start, name);
if (map == NULL)
return -1;
- map->end = start + size;
-
- dso__kernel_module_get_build_id(map->dso, machine->root_dir);
+ map__set_end(map, start + size);
+ dso__kernel_module_get_build_id(map__dso(map), machine->root_dir);
+ map__put(map);
return 0;
}
@@ -1481,35 +1529,38 @@ static int machine__create_modules(struct machine *machine)
static void machine__set_kernel_mmap(struct machine *machine,
u64 start, u64 end)
{
- machine->vmlinux_map->start = start;
- machine->vmlinux_map->end = end;
+ map__set_start(machine->vmlinux_map, start);
+ map__set_end(machine->vmlinux_map, end);
/*
* Be a bit paranoid here, some perf.data file came with
* a zero sized synthesized MMAP event for the kernel.
*/
if (start == 0 && end == 0)
- machine->vmlinux_map->end = ~0ULL;
+ map__set_end(machine->vmlinux_map, ~0ULL);
}
-static void machine__update_kernel_mmap(struct machine *machine,
+static int machine__update_kernel_mmap(struct machine *machine,
u64 start, u64 end)
{
- struct map *map = machine__kernel_map(machine);
+ struct map *orig, *updated;
+ int err;
- map__get(map);
- maps__remove(&machine->kmaps, map);
+ orig = machine->vmlinux_map;
+ updated = map__get(orig);
+ machine->vmlinux_map = updated;
machine__set_kernel_mmap(machine, start, end);
+ maps__remove(machine__kernel_maps(machine), orig);
+ err = maps__insert(machine__kernel_maps(machine), updated);
+ map__put(orig);
- maps__insert(&machine->kmaps, map);
- map__put(map);
+ return err;
}
int machine__create_kernel_maps(struct machine *machine)
{
struct dso *kernel = machine__get_kernel(machine);
const char *name = NULL;
- struct map *map;
u64 start = 0, end = ~0ULL;
int ret;
@@ -1541,7 +1592,9 @@ int machine__create_kernel_maps(struct machine *machine)
* we have a real start address now, so re-order the kmaps
* assume it's the last in the kmaps
*/
- machine__update_kernel_mmap(machine, start, end);
+ ret = machine__update_kernel_mmap(machine, start, end);
+ if (ret < 0)
+ goto out_put;
}
if (machine__create_extra_kernel_maps(machine, kernel))
@@ -1549,9 +1602,13 @@ int machine__create_kernel_maps(struct machine *machine)
if (end == ~0ULL) {
/* update end address of the kernel map using adjacent module address */
- map = map__next(machine__kernel_map(machine));
- if (map)
- machine__set_kernel_mmap(machine, start, map->start);
+ struct map *next = maps__find_next_entry(machine__kernel_maps(machine),
+ machine__kernel_map(machine));
+
+ if (next) {
+ machine__set_kernel_mmap(machine, start, map__start(next));
+ map__put(next);
+ }
}
out_put:
@@ -1572,36 +1629,30 @@ static bool machine__uses_kcore(struct machine *machine)
}
static bool perf_event__is_extra_kernel_mmap(struct machine *machine,
- union perf_event *event)
+ struct extra_kernel_map *xm)
{
return machine__is(machine, "x86_64") &&
- is_entry_trampoline(event->mmap.filename);
+ is_entry_trampoline(xm->name);
}
static int machine__process_extra_kernel_map(struct machine *machine,
- union perf_event *event)
+ struct extra_kernel_map *xm)
{
struct dso *kernel = machine__kernel_dso(machine);
- struct extra_kernel_map xm = {
- .start = event->mmap.start,
- .end = event->mmap.start + event->mmap.len,
- .pgoff = event->mmap.pgoff,
- };
if (kernel == NULL)
return -1;
- strlcpy(xm.name, event->mmap.filename, KMAP_NAME_LEN);
-
- return machine__create_extra_kernel_map(machine, kernel, &xm);
+ return machine__create_extra_kernel_map(machine, kernel, xm);
}
static int machine__process_kernel_mmap_event(struct machine *machine,
- union perf_event *event)
+ struct extra_kernel_map *xm,
+ struct build_id *bid)
{
- struct map *map;
enum dso_space_type dso_space;
bool is_kernel_mmap;
+ const char *mmap_name = machine->mmap_name;
/* If we have maps from kcore then we do not need or want any others */
if (machine__uses_kcore(machine))
@@ -1612,20 +1663,31 @@ static int machine__process_kernel_mmap_event(struct machine *machine,
else
dso_space = DSO_SPACE__KERNEL_GUEST;
- is_kernel_mmap = memcmp(event->mmap.filename,
- machine->mmap_name,
- strlen(machine->mmap_name) - 1) == 0;
- if (event->mmap.filename[0] == '/' ||
- (!is_kernel_mmap && event->mmap.filename[0] == '[')) {
- map = machine__addnew_module_map(machine, event->mmap.start,
- event->mmap.filename);
+ is_kernel_mmap = memcmp(xm->name, mmap_name, strlen(mmap_name) - 1) == 0;
+ if (!is_kernel_mmap && !machine__is_host(machine)) {
+ /*
+ * If the event was recorded inside the guest and injected into
+ * the host perf.data file, then it will match a host mmap_name,
+ * so try that - see machine__set_mmap_name().
+ */
+ mmap_name = "[kernel.kallsyms]";
+ is_kernel_mmap = memcmp(xm->name, mmap_name, strlen(mmap_name) - 1) == 0;
+ }
+ if (xm->name[0] == '/' ||
+ (!is_kernel_mmap && xm->name[0] == '[')) {
+ struct map *map = machine__addnew_module_map(machine, xm->start, xm->name);
+
if (map == NULL)
goto out_problem;
- map->end = map->start + event->mmap.len;
+ map__set_end(map, map__start(map) + xm->end - xm->start);
+
+ if (build_id__is_defined(bid))
+ dso__set_build_id(map__dso(map), bid);
+
+ map__put(map);
} else if (is_kernel_mmap) {
- const char *symbol_name = (event->mmap.filename +
- strlen(machine->mmap_name));
+ const char *symbol_name = xm->name + strlen(mmap_name);
/*
* Should be there already, from the build-id table in
* the header.
@@ -1659,7 +1721,7 @@ static int machine__process_kernel_mmap_event(struct machine *machine,
continue;
- kernel = dso;
+ kernel = dso__get(dso);
break;
}
@@ -1679,18 +1741,23 @@ static int machine__process_kernel_mmap_event(struct machine *machine,
if (strstr(kernel->long_name, "vmlinux"))
dso__set_short_name(kernel, "[kernel.vmlinux]", false);
- machine__update_kernel_mmap(machine, event->mmap.start,
- event->mmap.start + event->mmap.len);
+ if (machine__update_kernel_mmap(machine, xm->start, xm->end) < 0) {
+ dso__put(kernel);
+ goto out_problem;
+ }
+
+ if (build_id__is_defined(bid))
+ dso__set_build_id(kernel, bid);
/*
* 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) {
+ if (xm->pgoff != 0) {
map__set_kallsyms_ref_reloc_sym(machine->vmlinux_map,
symbol_name,
- event->mmap.pgoff);
+ xm->pgoff);
}
if (machine__is_default_guest(machine)) {
@@ -1699,8 +1766,9 @@ static int machine__process_kernel_mmap_event(struct machine *machine,
*/
dso__load(kernel, machine__kernel_map(machine));
}
- } else if (perf_event__is_extra_kernel_mmap(machine, event)) {
- return machine__process_extra_kernel_map(machine, event);
+ dso__put(kernel);
+ } else if (perf_event__is_extra_kernel_mmap(machine, xm)) {
+ return machine__process_extra_kernel_map(machine, xm);
}
return 0;
out_problem:
@@ -1719,14 +1787,27 @@ int machine__process_mmap2_event(struct machine *machine,
.ino = event->mmap2.ino,
.ino_generation = event->mmap2.ino_generation,
};
+ struct build_id __bid, *bid = NULL;
int ret = 0;
if (dump_trace)
perf_event__fprintf_mmap2(event, stdout);
+ if (event->header.misc & PERF_RECORD_MISC_MMAP_BUILD_ID) {
+ bid = &__bid;
+ build_id__init(bid, event->mmap2.build_id, event->mmap2.build_id_size);
+ }
+
if (sample->cpumode == PERF_RECORD_MISC_GUEST_KERNEL ||
sample->cpumode == PERF_RECORD_MISC_KERNEL) {
- ret = machine__process_kernel_mmap_event(machine, event);
+ struct extra_kernel_map xm = {
+ .start = event->mmap2.start,
+ .end = event->mmap2.start + event->mmap2.len,
+ .pgoff = event->mmap2.pgoff,
+ };
+
+ strlcpy(xm.name, event->mmap2.filename, KMAP_NAME_LEN);
+ ret = machine__process_kernel_mmap_event(machine, &xm, bid);
if (ret < 0)
goto out_problem;
return 0;
@@ -1740,7 +1821,7 @@ int machine__process_mmap2_event(struct machine *machine,
map = map__new(machine, event->mmap2.start,
event->mmap2.len, event->mmap2.pgoff,
&dso_id, event->mmap2.prot,
- event->mmap2.flags,
+ event->mmap2.flags, bid,
event->mmap2.filename, thread);
if (map == NULL)
@@ -1776,7 +1857,14 @@ int machine__process_mmap_event(struct machine *machine, union perf_event *event
if (sample->cpumode == PERF_RECORD_MISC_GUEST_KERNEL ||
sample->cpumode == PERF_RECORD_MISC_KERNEL) {
- ret = machine__process_kernel_mmap_event(machine, event);
+ struct extra_kernel_map xm = {
+ .start = event->mmap.start,
+ .end = event->mmap.start + event->mmap.len,
+ .pgoff = event->mmap.pgoff,
+ };
+
+ strlcpy(xm.name, event->mmap.filename, KMAP_NAME_LEN);
+ ret = machine__process_kernel_mmap_event(machine, &xm, NULL);
if (ret < 0)
goto out_problem;
return 0;
@@ -1792,7 +1880,7 @@ int machine__process_mmap_event(struct machine *machine, union perf_event *event
map = map__new(machine, event->mmap.start,
event->mmap.len, event->mmap.pgoff,
- NULL, prot, 0, event->mmap.filename, thread);
+ NULL, prot, 0, NULL, event->mmap.filename, thread);
if (map == NULL)
goto out_problem_map;
@@ -1814,42 +1902,9 @@ out_problem:
return 0;
}
-static void __machine__remove_thread(struct machine *machine, struct thread *th, bool lock)
-{
- struct threads *threads = machine__threads(machine, th->tid);
-
- if (threads->last_match == th)
- threads__set_last_match(threads, NULL);
-
- if (lock)
- down_write(&threads->lock);
-
- BUG_ON(refcount_read(&th->refcnt) == 0);
-
- rb_erase_cached(&th->rb_node, &threads->entries);
- RB_CLEAR_NODE(&th->rb_node);
- --threads->nr;
- /*
- * Move it first to the dead_threads list, then drop the reference,
- * if this is the last reference, then the thread__delete destructor
- * will be called and we will remove it from the dead_threads list.
- */
- list_add_tail(&th->node, &threads->dead);
-
- /*
- * We need to do the put here because if this is the last refcount,
- * then we will be touching the threads->dead head when removing the
- * thread.
- */
- thread__put(th);
-
- if (lock)
- up_write(&threads->lock);
-}
-
void machine__remove_thread(struct machine *machine, struct thread *th)
{
- return __machine__remove_thread(machine, th, true);
+ return threads__remove(&machine->threads, th);
}
int machine__process_fork_event(struct machine *machine, union perf_event *event,
@@ -1873,9 +1928,9 @@ int machine__process_fork_event(struct machine *machine, union perf_event *event
* (fork) event that would have removed the thread was lost. Assume the
* latter case and continue on as best we can.
*/
- if (parent->pid_ != (pid_t)event->fork.ppid) {
+ if (thread__pid(parent) != (pid_t)event->fork.ppid) {
dump_printf("removing erroneous parent thread %d/%d\n",
- parent->pid_, parent->tid);
+ thread__pid(parent), thread__tid(parent));
machine__remove_thread(machine, parent);
thread__put(parent);
parent = machine__findnew_thread(machine, event->fork.ppid,
@@ -1898,7 +1953,7 @@ int machine__process_fork_event(struct machine *machine, union perf_event *event
* maps because that is what the kernel just did.
*
* But when synthesizing, this should not be done. If we do, we end up
- * with overlapping maps as we process the sythesized MMAP2 events that
+ * with overlapping maps as we process the synthesized MMAP2 events that
* get delivered shortly thereafter.
*
* Use the FORK event misc flags in an internal way to signal this
@@ -1929,10 +1984,12 @@ int machine__process_exit_event(struct machine *machine, union perf_event *event
perf_event__fprintf_task(event, stdout);
if (thread != NULL) {
- thread__exited(thread);
- thread__put(thread);
+ if (symbol_conf.keep_exited_threads)
+ thread__set_exited(thread, /*exited=*/true);
+ else
+ machine__remove_thread(machine, thread);
}
-
+ thread__put(thread);
return 0;
}
@@ -1973,6 +2030,8 @@ int machine__process_event(struct machine *machine, union perf_event *event,
ret = machine__process_bpf(machine, event, sample); break;
case PERF_RECORD_TEXT_POKE:
ret = machine__process_text_poke(machine, event, sample); break;
+ case PERF_RECORD_AUX_OUTPUT_HW_ID:
+ ret = machine__process_aux_output_hw_id_event(machine, event); break;
default:
ret = -1;
break;
@@ -1983,9 +2042,7 @@ int machine__process_event(struct machine *machine, union perf_event *event,
static bool symbol__match_regex(struct symbol *sym, regex_t *regex)
{
- if (!regexec(regex, sym->name, 0, NULL, 0))
- return 1;
- return 0;
+ return regexec(regex, sym->name, 0, NULL, 0) == 0;
}
static void ip__resolve_ams(struct thread *thread,
@@ -1994,7 +2051,7 @@ static void ip__resolve_ams(struct thread *thread,
{
struct addr_location al;
- memset(&al, 0, sizeof(al));
+ addr_location__init(&al);
/*
* We cannot use the header.misc hint to determine whether a
* branch stack address is user, kernel, guest, hypervisor.
@@ -2006,28 +2063,34 @@ static void ip__resolve_ams(struct thread *thread,
ams->addr = ip;
ams->al_addr = al.addr;
- ams->ms.maps = al.maps;
+ ams->al_level = al.level;
+ ams->ms.maps = maps__get(al.maps);
ams->ms.sym = al.sym;
- ams->ms.map = al.map;
+ ams->ms.map = map__get(al.map);
ams->phys_addr = 0;
+ ams->data_page_size = 0;
+ addr_location__exit(&al);
}
static void ip__resolve_data(struct thread *thread,
u8 m, struct addr_map_symbol *ams,
- u64 addr, u64 phys_addr)
+ u64 addr, u64 phys_addr, u64 daddr_page_size)
{
struct addr_location al;
- memset(&al, 0, sizeof(al));
+ addr_location__init(&al);
thread__find_symbol(thread, m, addr, &al);
ams->addr = addr;
ams->al_addr = al.addr;
- ams->ms.maps = al.maps;
+ ams->al_level = al.level;
+ ams->ms.maps = maps__get(al.maps);
ams->ms.sym = al.sym;
- ams->ms.map = al.map;
+ ams->ms.map = map__get(al.map);
ams->phys_addr = phys_addr;
+ ams->data_page_size = daddr_page_size;
+ addr_location__exit(&al);
}
struct mem_info *sample__resolve_mem(struct perf_sample *sample,
@@ -2040,7 +2103,8 @@ struct mem_info *sample__resolve_mem(struct perf_sample *sample,
ip__resolve_ams(al->thread, &mi->iaddr, sample->ip);
ip__resolve_data(al->thread, al->cpumode, &mi->daddr,
- sample->addr, sample->phys_addr);
+ sample->addr, sample->phys_addr,
+ sample->data_page_size);
mi->data_src.val = sample->data_src;
return mi;
@@ -2050,18 +2114,20 @@ static char *callchain_srcline(struct map_symbol *ms, u64 ip)
{
struct map *map = ms->map;
char *srcline = NULL;
+ struct dso *dso;
if (!map || callchain_param.key == CCKEY_FUNCTION)
return srcline;
- srcline = srcline__tree_find(&map->dso->srclines, ip);
+ dso = map__dso(map);
+ srcline = srcline__tree_find(&dso->srclines, ip);
if (!srcline) {
bool show_sym = false;
bool show_addr = callchain_param.key == CCKEY_ADDRESS;
- srcline = get_srcline(map->dso, map__rip_2objdump(map, ip),
+ srcline = get_srcline(dso, map__rip_2objdump(map, ip),
ms->sym, show_sym, show_addr, ip);
- srcline__tree_insert(&map->dso->srclines, ip, srcline);
+ srcline__tree_insert(&dso->srclines, ip, srcline);
}
return srcline;
@@ -2083,14 +2149,16 @@ static int add_callchain_ip(struct thread *thread,
struct iterations *iter,
u64 branch_from)
{
- struct map_symbol ms;
+ struct map_symbol ms = {};
struct addr_location al;
- int nr_loop_iter = 0;
+ int nr_loop_iter = 0, err = 0;
u64 iter_cycles = 0;
const char *srcline = NULL;
+ addr_location__init(&al);
al.filtered = 0;
al.sym = NULL;
+ al.srcline = NULL;
if (!cpumode) {
thread__find_cpumode_addr_location(thread, ip, &al);
} else {
@@ -2113,9 +2181,10 @@ static int add_callchain_ip(struct thread *thread,
* Discard all.
*/
callchain_cursor_reset(cursor);
- return 1;
+ err = 1;
+ goto out;
}
- return 0;
+ goto out;
}
thread__find_symbol(thread, *cpumode, ip, &al);
}
@@ -2128,26 +2197,30 @@ static int add_callchain_ip(struct thread *thread,
symbol__match_regex(al.sym, &ignore_callees_regex)) {
/* Treat this symbol as the root,
forgetting its callees. */
- *root_al = al;
+ addr_location__copy(root_al, &al);
callchain_cursor_reset(cursor);
}
}
if (symbol_conf.hide_unresolved && al.sym == NULL)
- return 0;
+ goto out;
if (iter) {
nr_loop_iter = iter->nr_loop_iter;
iter_cycles = iter->cycles;
}
- ms.maps = al.maps;
- ms.map = al.map;
+ ms.maps = maps__get(al.maps);
+ ms.map = map__get(al.map);
ms.sym = al.sym;
srcline = callchain_srcline(&ms, al.addr);
- return callchain_cursor_append(cursor, ip, &ms,
- branch, flags, nr_loop_iter,
- iter_cycles, branch_from, srcline);
+ err = callchain_cursor_append(cursor, ip, &ms,
+ branch, flags, nr_loop_iter,
+ iter_cycles, branch_from, srcline);
+out:
+ addr_location__exit(&al);
+ map_symbol__exit(&ms);
+ return err;
}
struct branch_info *sample__resolve_bstack(struct perf_sample *sample,
@@ -2271,7 +2344,7 @@ static void save_lbr_cursor_node(struct thread *thread,
struct callchain_cursor *cursor,
int idx)
{
- struct lbr_stitch *lbr_stitch = thread->lbr_stitch;
+ struct lbr_stitch *lbr_stitch = thread__lbr_stitch(thread);
if (!lbr_stitch)
return;
@@ -2313,7 +2386,7 @@ static int lbr_callchain_add_lbr_ip(struct thread *thread,
* in callchain_cursor_commit() when the writing session is closed.
* Using curr and pos to track the current cursor node.
*/
- if (thread->lbr_stitch) {
+ if (thread__lbr_stitch(thread)) {
cursor->curr = NULL;
cursor->pos = cursor->nr;
if (cursor->nr) {
@@ -2341,7 +2414,7 @@ static int lbr_callchain_add_lbr_ip(struct thread *thread,
* But does not need to save current cursor node for entry 0.
* It's impossible to stitch the whole LBRs of previous sample.
*/
- if (thread->lbr_stitch && (cursor->pos != cursor->nr)) {
+ if (thread__lbr_stitch(thread) && (cursor->pos != cursor->nr)) {
if (!cursor->curr)
cursor->curr = cursor->first;
else
@@ -2377,16 +2450,18 @@ static int lbr_callchain_add_lbr_ip(struct thread *thread,
save_lbr_cursor_node(thread, cursor, i);
}
- /* Add LBR ip from first entries.to */
- ip = entries[0].to;
- flags = &entries[0].flags;
- *branch_from = entries[0].from;
- err = add_callchain_ip(thread, cursor, parent,
- root_al, &cpumode, ip,
- true, flags, NULL,
- *branch_from);
- if (err)
- return err;
+ if (lbr_nr > 0) {
+ /* Add LBR ip from first entries.to */
+ ip = entries[0].to;
+ flags = &entries[0].flags;
+ *branch_from = entries[0].from;
+ err = add_callchain_ip(thread, cursor, parent,
+ root_al, &cpumode, ip,
+ true, flags, NULL,
+ *branch_from);
+ if (err)
+ return err;
+ }
return 0;
}
@@ -2394,7 +2469,7 @@ static int lbr_callchain_add_lbr_ip(struct thread *thread,
static int lbr_callchain_add_stitched_lbr_ip(struct thread *thread,
struct callchain_cursor *cursor)
{
- struct lbr_stitch *lbr_stitch = thread->lbr_stitch;
+ struct lbr_stitch *lbr_stitch = thread__lbr_stitch(thread);
struct callchain_cursor_node *cnode;
struct stitch_list *stitch_node;
int err;
@@ -2418,7 +2493,7 @@ static int lbr_callchain_add_stitched_lbr_ip(struct thread *thread,
static struct stitch_list *get_stitch_node(struct thread *thread)
{
- struct lbr_stitch *lbr_stitch = thread->lbr_stitch;
+ struct lbr_stitch *lbr_stitch = thread__lbr_stitch(thread);
struct stitch_list *stitch_node;
if (!list_empty(&lbr_stitch->free_lists)) {
@@ -2442,7 +2517,7 @@ static bool has_stitched_lbr(struct thread *thread,
struct branch_entry *cur_entries = perf_sample__branch_entries(cur);
struct branch_stack *prev_stack = prev->branch_stack;
struct branch_entry *prev_entries = perf_sample__branch_entries(prev);
- struct lbr_stitch *lbr_stitch = thread->lbr_stitch;
+ struct lbr_stitch *lbr_stitch = thread__lbr_stitch(thread);
int i, j, nr_identical_branches = 0;
struct stitch_list *stitch_node;
u64 cur_base, distance;
@@ -2461,7 +2536,7 @@ static bool has_stitched_lbr(struct thread *thread,
/*
* Check if there are identical LBRs between two samples.
- * Identicall LBRs must have same from, to and flags values. Also,
+ * Identical LBRs must have same from, to and flags values. Also,
* they have to be saved in the same LBR registers (same physical
* index).
*
@@ -2506,32 +2581,34 @@ static bool has_stitched_lbr(struct thread *thread,
static bool alloc_lbr_stitch(struct thread *thread, unsigned int max_lbr)
{
- if (thread->lbr_stitch)
+ if (thread__lbr_stitch(thread))
return true;
- thread->lbr_stitch = zalloc(sizeof(*thread->lbr_stitch));
- if (!thread->lbr_stitch)
+ thread__set_lbr_stitch(thread, zalloc(sizeof(struct lbr_stitch)));
+ if (!thread__lbr_stitch(thread))
goto err;
- thread->lbr_stitch->prev_lbr_cursor = calloc(max_lbr + 1, sizeof(struct callchain_cursor_node));
- if (!thread->lbr_stitch->prev_lbr_cursor)
+ thread__lbr_stitch(thread)->prev_lbr_cursor =
+ calloc(max_lbr + 1, sizeof(struct callchain_cursor_node));
+ if (!thread__lbr_stitch(thread)->prev_lbr_cursor)
goto free_lbr_stitch;
- INIT_LIST_HEAD(&thread->lbr_stitch->lists);
- INIT_LIST_HEAD(&thread->lbr_stitch->free_lists);
+ INIT_LIST_HEAD(&thread__lbr_stitch(thread)->lists);
+ INIT_LIST_HEAD(&thread__lbr_stitch(thread)->free_lists);
return true;
free_lbr_stitch:
- zfree(&thread->lbr_stitch);
+ free(thread__lbr_stitch(thread));
+ thread__set_lbr_stitch(thread, NULL);
err:
pr_warning("Failed to allocate space for stitched LBRs. Disable LBR stitch\n");
- thread->lbr_stitch_enable = false;
+ thread__set_lbr_stitch_enable(thread, false);
return false;
}
/*
- * Recolve LBR callstack chain sample
+ * Resolve LBR callstack chain sample
* Return:
* 1 on success get LBR callchain information
* 0 no available LBR callchain information, should try fp
@@ -2562,9 +2639,9 @@ static int resolve_lbr_callchain_sample(struct thread *thread,
if (i == chain_nr)
return 0;
- if (thread->lbr_stitch_enable && !sample->no_hw_idx &&
+ if (thread__lbr_stitch_enable(thread) && !sample->no_hw_idx &&
(max_lbr > 0) && alloc_lbr_stitch(thread, max_lbr)) {
- lbr_stitch = thread->lbr_stitch;
+ lbr_stitch = thread__lbr_stitch(thread);
stitched_lbr = has_stitched_lbr(thread, sample,
&lbr_stitch->prev_sample,
@@ -2641,6 +2718,15 @@ static int find_prev_cpumode(struct ip_callchain *chain, struct thread *thread,
return err;
}
+static u64 get_leaf_frame_caller(struct perf_sample *sample,
+ struct thread *thread, int usr_idx)
+{
+ if (machine__normalized_is(maps__machine(thread__maps(thread)), "arm64"))
+ return get_leaf_frame_caller_aarch64(sample, thread, usr_idx);
+ else
+ return 0;
+}
+
static int thread__resolve_callchain_sample(struct thread *thread,
struct callchain_cursor *cursor,
struct evsel *evsel,
@@ -2654,9 +2740,10 @@ static int thread__resolve_callchain_sample(struct thread *thread,
struct ip_callchain *chain = sample->callchain;
int chain_nr = 0;
u8 cpumode = PERF_RECORD_MISC_USER;
- int i, j, err, nr_entries;
+ int i, j, err, nr_entries, usr_idx;
int skip_idx = -1;
int first_call = 0;
+ u64 leaf_frame_caller;
if (chain)
chain_nr = chain->nr;
@@ -2781,6 +2868,34 @@ check_calls:
continue;
}
+ /*
+ * PERF_CONTEXT_USER allows us to locate where the user stack ends.
+ * Depending on callchain_param.order and the position of PERF_CONTEXT_USER,
+ * the index will be different in order to add the missing frame
+ * at the right place.
+ */
+
+ usr_idx = callchain_param.order == ORDER_CALLEE ? j-2 : j-1;
+
+ if (usr_idx >= 0 && chain->ips[usr_idx] == PERF_CONTEXT_USER) {
+
+ leaf_frame_caller = get_leaf_frame_caller(sample, thread, usr_idx);
+
+ /*
+ * check if leaf_frame_Caller != ip to not add the same
+ * value twice.
+ */
+
+ if (leaf_frame_caller && leaf_frame_caller != ip) {
+
+ err = add_callchain_ip(thread, cursor, parent,
+ root_al, &cpumode, leaf_frame_caller,
+ false, NULL, NULL, 0);
+ if (err)
+ return (err < 0) ? err : 0;
+ }
+ }
+
err = add_callchain_ip(thread, cursor, parent,
root_al, &cpumode, ip,
false, NULL, NULL, 0);
@@ -2798,35 +2913,39 @@ static int append_inlines(struct callchain_cursor *cursor, struct map_symbol *ms
struct map *map = ms->map;
struct inline_node *inline_node;
struct inline_list *ilist;
+ struct dso *dso;
u64 addr;
int ret = 1;
+ struct map_symbol ilist_ms;
if (!symbol_conf.inline_name || !map || !sym)
return ret;
- addr = map__map_ip(map, ip);
+ addr = map__dso_map_ip(map, ip);
addr = map__rip_2objdump(map, addr);
+ dso = map__dso(map);
- inline_node = inlines__tree_find(&map->dso->inlined_nodes, addr);
+ inline_node = inlines__tree_find(&dso->inlined_nodes, addr);
if (!inline_node) {
- inline_node = dso__parse_addr_inlines(map->dso, addr, sym);
+ inline_node = dso__parse_addr_inlines(dso, addr, sym);
if (!inline_node)
return ret;
- inlines__tree_insert(&map->dso->inlined_nodes, inline_node);
+ inlines__tree_insert(&dso->inlined_nodes, inline_node);
}
+ ilist_ms = (struct map_symbol) {
+ .maps = maps__get(ms->maps),
+ .map = map__get(map),
+ };
list_for_each_entry(ilist, &inline_node->val, list) {
- struct map_symbol ilist_ms = {
- .maps = ms->maps,
- .map = map,
- .sym = ilist->symbol,
- };
+ ilist_ms.sym = ilist->symbol;
ret = callchain_cursor_append(cursor, ip, &ilist_ms, false,
NULL, 0, 0, 0, ilist->srcline);
if (ret != 0)
return ret;
}
+ map_symbol__exit(&ilist_ms);
return ret;
}
@@ -2848,7 +2967,7 @@ static int unwind_entry(struct unwind_entry *entry, void *arg)
* its corresponding binary.
*/
if (entry->ms.map)
- addr = map__map_ip(entry->ms.map, entry->ip);
+ addr = map__dso_map_ip(entry->ms.map, entry->ip);
srcline = callchain_srcline(&entry->ms, addr);
return callchain_cursor_append(cursor, entry->ip, &entry->ms,
@@ -2872,7 +2991,7 @@ static int thread__resolve_callchain_unwind(struct thread *thread,
return 0;
return unwind__get_entries(unwind_entry, cursor,
- thread, sample, max_stack);
+ thread, sample, max_stack, false);
}
int thread__resolve_callchain(struct thread *thread,
@@ -2885,6 +3004,9 @@ int thread__resolve_callchain(struct thread *thread,
{
int ret = 0;
+ if (cursor == NULL)
+ return -ENOMEM;
+
callchain_cursor_reset(cursor);
if (callchain_param.order == ORDER_CALLEE) {
@@ -2916,29 +3038,7 @@ int machine__for_each_thread(struct machine *machine,
int (*fn)(struct thread *thread, void *p),
void *priv)
{
- struct threads *threads;
- struct rb_node *nd;
- struct thread *thread;
- int rc = 0;
- int i;
-
- for (i = 0; i < THREADS__TABLE_SIZE; i++) {
- threads = &machine->threads[i];
- for (nd = rb_first_cached(&threads->entries); nd;
- nd = rb_next(nd)) {
- thread = rb_entry(nd, struct thread, rb_node);
- rc = fn(thread, priv);
- if (rc != 0)
- return rc;
- }
-
- list_for_each_entry(thread, &threads->dead, node) {
- rc = fn(thread, priv);
- if (rc != 0)
- return rc;
- }
- }
- return rc;
+ return threads__for_each_thread(&machine->threads, fn, priv);
}
int machines__for_each_thread(struct machines *machines,
@@ -2962,11 +3062,39 @@ int machines__for_each_thread(struct machines *machines,
return rc;
}
-pid_t machine__get_current_tid(struct machine *machine, int cpu)
+
+static int thread_list_cb(struct thread *thread, void *data)
{
- int nr_cpus = min(machine->env->nr_cpus_online, MAX_NR_CPUS);
+ struct list_head *list = data;
+ struct thread_list *entry = malloc(sizeof(*entry));
+
+ if (!entry)
+ return -ENOMEM;
- if (cpu < 0 || cpu >= nr_cpus || !machine->current_tid)
+ entry->thread = thread__get(thread);
+ list_add_tail(&entry->list, list);
+ return 0;
+}
+
+int machine__thread_list(struct machine *machine, struct list_head *list)
+{
+ return machine__for_each_thread(machine, thread_list_cb, list);
+}
+
+void thread_list__delete(struct list_head *list)
+{
+ struct thread_list *pos, *next;
+
+ list_for_each_entry_safe(pos, next, list, list) {
+ thread__zput(pos->thread);
+ list_del(&pos->list);
+ free(pos);
+ }
+}
+
+pid_t machine__get_current_tid(struct machine *machine, int cpu)
+{
+ if (cpu < 0 || (size_t)cpu >= machine->current_tid_sz)
return -1;
return machine->current_tid[cpu];
@@ -2976,26 +3104,16 @@ int machine__set_current_tid(struct machine *machine, int cpu, pid_t pid,
pid_t tid)
{
struct thread *thread;
- int nr_cpus = min(machine->env->nr_cpus_online, MAX_NR_CPUS);
+ const pid_t init_val = -1;
if (cpu < 0)
return -EINVAL;
- if (!machine->current_tid) {
- int i;
-
- machine->current_tid = calloc(nr_cpus, sizeof(pid_t));
- if (!machine->current_tid)
- return -ENOMEM;
- for (i = 0; i < nr_cpus; i++)
- machine->current_tid[i] = -1;
- }
-
- if (cpu >= nr_cpus) {
- pr_err("Requested CPU %d too large. ", cpu);
- pr_err("Consider raising MAX_NR_CPUS\n");
- return -EINVAL;
- }
+ if (realloc_array_as_needed(machine->current_tid,
+ machine->current_tid_sz,
+ (unsigned int)cpu,
+ &init_val))
+ return -ENOMEM;
machine->current_tid[cpu] = tid;
@@ -3003,21 +3121,26 @@ int machine__set_current_tid(struct machine *machine, int cpu, pid_t pid,
if (!thread)
return -ENOMEM;
- thread->cpu = cpu;
+ thread__set_cpu(thread, cpu);
thread__put(thread);
return 0;
}
/*
- * Compares the raw arch string. N.B. see instead perf_env__arch() if a
- * normalized arch is needed.
+ * Compares the raw arch string. N.B. see instead perf_env__arch() or
+ * machine__normalized_is() if a normalized arch is needed.
*/
bool machine__is(struct machine *machine, const char *arch)
{
return machine && !strcmp(perf_env__raw_arch(machine->env), arch);
}
+bool machine__normalized_is(struct machine *machine, const char *arch)
+{
+ return machine && !strcmp(perf_env__arch(machine->env), arch);
+}
+
int machine__nr_cpus_avail(struct machine *machine)
{
return machine ? perf_env__nr_cpus_avail(machine->env) : 0;
@@ -3045,7 +3168,7 @@ int machine__get_kernel_start(struct machine *machine)
* kernel_start = 1ULL << 63 for x86_64.
*/
if (!err && !machine__is(machine, "x86_64"))
- machine->kernel_start = map->start;
+ machine->kernel_start = map__start(map);
}
return err;
}
@@ -3096,8 +3219,8 @@ char *machine__resolve_kernel_addr(void *vmachine, unsigned long long *addrp, ch
if (sym == NULL)
return NULL;
- *modp = __map__is_kmodule(map) ? (char *)map->dso->short_name : NULL;
- *addrp = map->unmap_ip(map, sym->start);
+ *modp = __map__is_kmodule(map) ? (char *)map__dso(map)->short_name : NULL;
+ *addrp = map__unmap_ip(map, sym->start);
return sym->name;
}
@@ -3112,3 +3235,50 @@ int machine__for_each_dso(struct machine *machine, machine__dso_t fn, void *priv
}
return err;
}
+
+int machine__for_each_kernel_map(struct machine *machine, machine__map_t fn, void *priv)
+{
+ struct maps *maps = machine__kernel_maps(machine);
+
+ return maps__for_each_map(maps, fn, priv);
+}
+
+bool machine__is_lock_function(struct machine *machine, u64 addr)
+{
+ if (!machine->sched.text_start) {
+ struct map *kmap;
+ struct symbol *sym = machine__find_kernel_symbol_by_name(machine, "__sched_text_start", &kmap);
+
+ if (!sym) {
+ /* to avoid retry */
+ machine->sched.text_start = 1;
+ return false;
+ }
+
+ machine->sched.text_start = map__unmap_ip(kmap, sym->start);
+
+ /* should not fail from here */
+ sym = machine__find_kernel_symbol_by_name(machine, "__sched_text_end", &kmap);
+ machine->sched.text_end = map__unmap_ip(kmap, sym->start);
+
+ sym = machine__find_kernel_symbol_by_name(machine, "__lock_text_start", &kmap);
+ machine->lock.text_start = map__unmap_ip(kmap, sym->start);
+
+ sym = machine__find_kernel_symbol_by_name(machine, "__lock_text_end", &kmap);
+ machine->lock.text_end = map__unmap_ip(kmap, sym->start);
+ }
+
+ /* failed to get kernel symbols */
+ if (machine->sched.text_start == 1)
+ return false;
+
+ /* mutex and rwsem functions are in sched text section */
+ if (machine->sched.text_start <= addr && addr < machine->sched.text_end)
+ return true;
+
+ /* spinlock functions are in lock text section */
+ if (machine->lock.text_start <= addr && addr < machine->lock.text_end)
+ return true;
+
+ return false;
+}