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perf machine: Introduce struct machines

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That consolidates the grouping of host + guests, isolating a bit more of
functionality now centered on 'perf_session' that can be used
independently in tools that don't need a 'perf_session' instance, but
needs to have all the thread/map/symbol machinery.

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-c700rsiphpmzv8klogojpfut@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2012-12-18 19:15:48 -03:00
parent 28a6b6aa54
commit 876650e6c3
9 changed files with 95 additions and 81 deletions
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4
tools/perf/builtin-record.c
View File

@ -571,8 +571,8 @@ static int __cmd_record(struct perf_record *rec, int argc, const char **argv)
"Check /proc/modules permission or run as root.\n");
if (perf_guest) {
machines__process(&session->machines,
perf_event__synthesize_guest_os, tool);
machines__process_guests(&session->machines,
perf_event__synthesize_guest_os, tool);
}
if (!opts->target.system_wide)

2
tools/perf/builtin-report.c
View File

@ -372,7 +372,7 @@ static int __cmd_report(struct perf_report *rep)
if (ret)
goto out_delete;
kernel_map = session->host_machine.vmlinux_maps[MAP__FUNCTION];
kernel_map = session->machines.host.vmlinux_maps[MAP__FUNCTION];
kernel_kmap = map__kmap(kernel_map);
if (kernel_map == NULL ||
(kernel_map->dso->hit &&

4
tools/perf/builtin-top.c
View File

@ -966,10 +966,10 @@ static int __cmd_top(struct perf_top *top)
if (perf_target__has_task(&opts->target))
perf_event__synthesize_thread_map(&top->tool, top->evlist->threads,
perf_event__process,
&top->session->host_machine);
&top->session->machines.host);
else
perf_event__synthesize_threads(&top->tool, perf_event__process,
&top->session->host_machine);
&top->session->machines.host);
perf_top__start_counters(top);
top->session->evlist = top->evlist;
perf_session__set_id_hdr_size(top->session);

17
tools/perf/tests/hists_link.c
View File

@ -75,13 +75,11 @@ static struct {
{ "[kernel]", kernel_syms, ARRAY_SIZE(kernel_syms) },
};
static struct machine *setup_fake_machine(void)
static struct machine *setup_fake_machine(struct machines *machines)
{
struct rb_root machine_root = RB_ROOT;
struct machine *machine;
struct machine *machine = machines__find(machines, HOST_KERNEL_ID);
size_t i;
machine = machines__findnew(&machine_root, HOST_KERNEL_ID);
if (machine == NULL) {
pr_debug("Not enough memory for machine setup\n");
return NULL;
@ -435,6 +433,7 @@ static void print_hists(struct hists *hists)
int test__hists_link(void)
{
int err = -1;
struct machines machines;
struct machine *machine = NULL;
struct perf_evsel *evsel, *first;
struct perf_evlist *evlist = perf_evlist__new(NULL, NULL);
@ -452,8 +451,10 @@ int test__hists_link(void)
/* default sort order (comm,dso,sym) will be used */
setup_sorting(NULL, NULL);
machines__init(&machines);
/* setup threads/dso/map/symbols also */
machine = setup_fake_machine();
machine = setup_fake_machine(&machines);
if (!machine)
goto out;
@ -492,11 +493,7 @@ int test__hists_link(void)
out:
/* tear down everything */
perf_evlist__delete(evlist);
if (machine) {
machine__delete_threads(machine);
machine__delete(machine);
}
machines__exit(&machines);
return err;
}

12
tools/perf/util/header.c
View File

@ -287,12 +287,12 @@ static int dsos__write_buildid_table(struct perf_header *header, int fd)
struct perf_session *session = container_of(header,
struct perf_session, header);
struct rb_node *nd;
int err = machine__write_buildid_table(&session->host_machine, fd);
int err = machine__write_buildid_table(&session->machines.host, fd);
if (err)
return err;
for (nd = rb_first(&session->machines); nd; nd = rb_next(nd)) {
for (nd = rb_first(&session->machines.guests); nd; nd = rb_next(nd)) {
struct machine *pos = rb_entry(nd, struct machine, rb_node);
err = machine__write_buildid_table(pos, fd);
if (err)
@ -448,9 +448,9 @@ static int perf_session__cache_build_ids(struct perf_session *session)
if (mkdir(debugdir, 0755) != 0 && errno != EEXIST)
return -1;
ret = machine__cache_build_ids(&session->host_machine, debugdir);
ret = machine__cache_build_ids(&session->machines.host, debugdir);
for (nd = rb_first(&session->machines); nd; nd = rb_next(nd)) {
for (nd = rb_first(&session->machines.guests); nd; nd = rb_next(nd)) {
struct machine *pos = rb_entry(nd, struct machine, rb_node);
ret |= machine__cache_build_ids(pos, debugdir);
}
@ -467,9 +467,9 @@ static bool machine__read_build_ids(struct machine *machine, bool with_hits)
static bool perf_session__read_build_ids(struct perf_session *session, bool with_hits)
{
struct rb_node *nd;
bool ret = machine__read_build_ids(&session->host_machine, with_hits);
bool ret = machine__read_build_ids(&session->machines.host, with_hits);
for (nd = rb_first(&session->machines); nd; nd = rb_next(nd)) {
for (nd = rb_first(&session->machines.guests); nd; nd = rb_next(nd)) {
struct machine *pos = rb_entry(nd, struct machine, rb_node);
ret |= machine__read_build_ids(pos, with_hits);
}

64
tools/perf/util/machine.c
View File

@ -91,10 +91,22 @@ void machine__delete(struct machine *machine)
free(machine);
}
struct machine *machines__add(struct rb_root *machines, pid_t pid,
void machines__init(struct machines *machines)
{
machine__init(&machines->host, "", HOST_KERNEL_ID);
machines->guests = RB_ROOT;
}
void machines__exit(struct machines *machines)
{
machine__exit(&machines->host);
/* XXX exit guest */
}
struct machine *machines__add(struct machines *machines, pid_t pid,
const char *root_dir)
{
struct rb_node **p = &machines->rb_node;
struct rb_node **p = &machines->guests.rb_node;
struct rb_node *parent = NULL;
struct machine *pos, *machine = malloc(sizeof(*machine));
@ -116,18 +128,21 @@ struct machine *machines__add(struct rb_root *machines, pid_t pid,
}
rb_link_node(&machine->rb_node, parent, p);
rb_insert_color(&machine->rb_node, machines);
rb_insert_color(&machine->rb_node, &machines->guests);
return machine;
}
struct machine *machines__find(struct rb_root *machines, pid_t pid)
struct machine *machines__find(struct machines *machines, pid_t pid)
{
struct rb_node **p = &machines->rb_node;
struct rb_node **p = &machines->guests.rb_node;
struct rb_node *parent = NULL;
struct machine *machine;
struct machine *default_machine = NULL;
if (pid == HOST_KERNEL_ID)
return &machines->host;
while (*p != NULL) {
parent = *p;
machine = rb_entry(parent, struct machine, rb_node);
@ -144,7 +159,7 @@ struct machine *machines__find(struct rb_root *machines, pid_t pid)
return default_machine;
}
struct machine *machines__findnew(struct rb_root *machines, pid_t pid)
struct machine *machines__findnew(struct machines *machines, pid_t pid)
{
char path[PATH_MAX];
const char *root_dir = "";
@ -178,12 +193,12 @@ struct machine *machines__findnew(struct rb_root *machines, pid_t pid)
return machine;
}
void machines__process(struct rb_root *machines,
machine__process_t process, void *data)
void machines__process_guests(struct machines *machines,
machine__process_t process, void *data)
{
struct rb_node *nd;
for (nd = rb_first(machines); nd; nd = rb_next(nd)) {
for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) {
struct machine *pos = rb_entry(nd, struct machine, rb_node);
process(pos, data);
}
@ -203,12 +218,14 @@ char *machine__mmap_name(struct machine *machine, char *bf, size_t size)
return bf;
}
void machines__set_id_hdr_size(struct rb_root *machines, u16 id_hdr_size)
void machines__set_id_hdr_size(struct machines *machines, u16 id_hdr_size)
{
struct rb_node *node;
struct machine *machine;
for (node = rb_first(machines); node; node = rb_next(node)) {
machines->host.id_hdr_size = id_hdr_size;
for (node = rb_first(&machines->guests); node; node = rb_next(node)) {
machine = rb_entry(node, struct machine, rb_node);
machine->id_hdr_size = id_hdr_size;
}
@ -313,12 +330,13 @@ struct map *machine__new_module(struct machine *machine, u64 start,
return map;
}
size_t machines__fprintf_dsos(struct rb_root *machines, FILE *fp)
size_t machines__fprintf_dsos(struct machines *machines, FILE *fp)
{
struct rb_node *nd;
size_t ret = 0;
size_t ret = __dsos__fprintf(&machines->host.kernel_dsos, fp) +
__dsos__fprintf(&machines->host.user_dsos, fp);
for (nd = rb_first(machines); nd; nd = rb_next(nd)) {
for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) {
struct machine *pos = rb_entry(nd, struct machine, rb_node);
ret += __dsos__fprintf(&pos->kernel_dsos, fp);
ret += __dsos__fprintf(&pos->user_dsos, fp);
@ -334,13 +352,13 @@ size_t machine__fprintf_dsos_buildid(struct machine *machine, FILE *fp,
__dsos__fprintf_buildid(&machine->user_dsos, fp, skip, parm);
}
size_t machines__fprintf_dsos_buildid(struct rb_root *machines, FILE *fp,
size_t machines__fprintf_dsos_buildid(struct machines *machines, FILE *fp,
bool (skip)(struct dso *dso, int parm), int parm)
{
struct rb_node *nd;
size_t ret = 0;
size_t ret = machine__fprintf_dsos_buildid(&machines->host, fp, skip, parm);
for (nd = rb_first(machines); nd; nd = rb_next(nd)) {
for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) {
struct machine *pos = rb_entry(nd, struct machine, rb_node);
ret += machine__fprintf_dsos_buildid(pos, fp, skip, parm);
}
@ -511,7 +529,7 @@ void machine__destroy_kernel_maps(struct machine *machine)
}
}
int machines__create_guest_kernel_maps(struct rb_root *machines)
int machines__create_guest_kernel_maps(struct machines *machines)
{
int ret = 0;
struct dirent **namelist = NULL;
@ -560,20 +578,22 @@ int machines__create_guest_kernel_maps(struct rb_root *machines)
return ret;
}
void machines__destroy_guest_kernel_maps(struct rb_root *machines)
void machines__destroy_kernel_maps(struct machines *machines)
{
struct rb_node *next = rb_first(machines);
struct rb_node *next = rb_first(&machines->guests);
machine__destroy_kernel_maps(&machines->host);
while (next) {
struct machine *pos = rb_entry(next, struct machine, rb_node);
next = rb_next(&pos->rb_node);
rb_erase(&pos->rb_node, machines);
rb_erase(&pos->rb_node, &machines->guests);
machine__delete(pos);
}
}
int machines__create_kernel_maps(struct rb_root *machines, pid_t pid)
int machines__create_kernel_maps(struct machines *machines, pid_t pid)
{
struct machine *machine = machines__findnew(machines, pid);

32
tools/perf/util/machine.h
View File

@ -47,16 +47,24 @@ int machine__process_event(struct machine *machine, union perf_event *event);
typedef void (*machine__process_t)(struct machine *machine, void *data);
void machines__process(struct rb_root *machines,
machine__process_t process, void *data);
struct machines {
struct machine host;
struct rb_root guests;
};
struct machine *machines__add(struct rb_root *machines, pid_t pid,
void machines__init(struct machines *machines);
void machines__exit(struct machines *machines);
void machines__process_guests(struct machines *machines,
machine__process_t process, void *data);
struct machine *machines__add(struct machines *machines, pid_t pid,
const char *root_dir);
struct machine *machines__find_host(struct rb_root *machines);
struct machine *machines__find(struct rb_root *machines, pid_t pid);
struct machine *machines__findnew(struct rb_root *machines, pid_t pid);
struct machine *machines__find_host(struct machines *machines);
struct machine *machines__find(struct machines *machines, pid_t pid);
struct machine *machines__findnew(struct machines *machines, pid_t pid);
void machines__set_id_hdr_size(struct rb_root *machines, u16 id_hdr_size);
void machines__set_id_hdr_size(struct machines *machines, u16 id_hdr_size);
char *machine__mmap_name(struct machine *machine, char *bf, size_t size);
int machine__init(struct machine *machine, const char *root_dir, pid_t pid);
@ -132,17 +140,17 @@ int machine__load_vmlinux_path(struct machine *machine, enum map_type type,
size_t machine__fprintf_dsos_buildid(struct machine *machine, FILE *fp,
bool (skip)(struct dso *dso, int parm), int parm);
size_t machines__fprintf_dsos(struct rb_root *machines, FILE *fp);
size_t machines__fprintf_dsos_buildid(struct rb_root *machines, FILE *fp,
size_t machines__fprintf_dsos(struct machines *machines, FILE *fp);
size_t machines__fprintf_dsos_buildid(struct machines *machines, FILE *fp,
bool (skip)(struct dso *dso, int parm), int parm);
void machine__destroy_kernel_maps(struct machine *machine);
int __machine__create_kernel_maps(struct machine *machine, struct dso *kernel);
int machine__create_kernel_maps(struct machine *machine);
int machines__create_kernel_maps(struct rb_root *machines, pid_t pid);
int machines__create_guest_kernel_maps(struct rb_root *machines);
void machines__destroy_guest_kernel_maps(struct rb_root *machines);
int machines__create_kernel_maps(struct machines *machines, pid_t pid);
int machines__create_guest_kernel_maps(struct machines *machines);
void machines__destroy_kernel_maps(struct machines *machines);
size_t machine__fprintf_vmlinux_path(struct machine *machine, FILE *fp);

30
tools/perf/util/session.c
View File

@ -86,13 +86,12 @@ void perf_session__set_id_hdr_size(struct perf_session *session)
{
u16 id_hdr_size = perf_evlist__id_hdr_size(session->evlist);
session->host_machine.id_hdr_size = id_hdr_size;
machines__set_id_hdr_size(&session->machines, id_hdr_size);
}
int perf_session__create_kernel_maps(struct perf_session *self)
{
int ret = machine__create_kernel_maps(&self->host_machine);
int ret = machine__create_kernel_maps(&self->machines.host);
if (ret >= 0)
ret = machines__create_guest_kernel_maps(&self->machines);
@ -101,8 +100,7 @@ int perf_session__create_kernel_maps(struct perf_session *self)
static void perf_session__destroy_kernel_maps(struct perf_session *self)
{
machine__destroy_kernel_maps(&self->host_machine);
machines__destroy_guest_kernel_maps(&self->machines);
machines__destroy_kernel_maps(&self->machines);
}
struct perf_session *perf_session__new(const char *filename, int mode,
@ -127,12 +125,11 @@ struct perf_session *perf_session__new(const char *filename, int mode,
goto out;
memcpy(self->filename, filename, len);
self->machines = RB_ROOT;
self->repipe = repipe;
INIT_LIST_HEAD(&self->ordered_samples.samples);
INIT_LIST_HEAD(&self->ordered_samples.sample_cache);
INIT_LIST_HEAD(&self->ordered_samples.to_free);
machine__init(&self->host_machine, "", HOST_KERNEL_ID);
machines__init(&self->machines);
if (mode == O_RDONLY) {
if (perf_session__open(self, force) < 0)
@ -162,12 +159,12 @@ struct perf_session *perf_session__new(const char *filename, int mode,
static void perf_session__delete_dead_threads(struct perf_session *session)
{
machine__delete_dead_threads(&session->host_machine);
machine__delete_dead_threads(&session->machines.host);
}
static void perf_session__delete_threads(struct perf_session *session)
{
machine__delete_threads(&session->host_machine);
machine__delete_threads(&session->machines.host);
}
static void perf_session_env__delete(struct perf_session_env *env)
@ -192,7 +189,7 @@ void perf_session__delete(struct perf_session *self)
perf_session__delete_dead_threads(self);
perf_session__delete_threads(self);
perf_session_env__delete(&self->header.env);
machine__exit(&self->host_machine);
machines__exit(&self->machines);
close(self->fd);
free(self);
vdso__exit();
@ -998,7 +995,7 @@ void perf_event_header__bswap(struct perf_event_header *self)
struct thread *perf_session__findnew(struct perf_session *session, pid_t pid)
{
return machine__findnew_thread(&session->host_machine, pid);
return machine__findnew_thread(&session->machines.host, pid);
}
static struct thread *perf_session__register_idle_thread(struct perf_session *self)
@ -1335,16 +1332,13 @@ int maps__set_kallsyms_ref_reloc_sym(struct map **maps,
size_t perf_session__fprintf_dsos(struct perf_session *self, FILE *fp)
{
return __dsos__fprintf(&self->host_machine.kernel_dsos, fp) +
__dsos__fprintf(&self->host_machine.user_dsos, fp) +
machines__fprintf_dsos(&self->machines, fp);
return machines__fprintf_dsos(&self->machines, fp);
}
size_t perf_session__fprintf_dsos_buildid(struct perf_session *self, FILE *fp,
bool (skip)(struct dso *dso, int parm), int parm)
{
size_t ret = machine__fprintf_dsos_buildid(&self->host_machine, fp, skip, parm);
return ret + machines__fprintf_dsos_buildid(&self->machines, fp, skip, parm);
return machines__fprintf_dsos_buildid(&self->machines, fp, skip, parm);
}
size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp)
@ -1368,7 +1362,7 @@ size_t perf_session__fprintf(struct perf_session *session, FILE *fp)
* FIXME: Here we have to actually print all the machines in this
* session, not just the host...
*/
return machine__fprintf(&session->host_machine, fp);
return machine__fprintf(&session->machines.host, fp);
}
void perf_session__remove_thread(struct perf_session *session,
@ -1377,10 +1371,10 @@ void perf_session__remove_thread(struct perf_session *session,
/*
* FIXME: This one makes no sense, we need to remove the thread from
* the machine it belongs to, perf_session can have many machines, so
* doing it always on ->host_machine is wrong. Fix when auditing all
* doing it always on ->machines.host is wrong. Fix when auditing all
* the 'perf kvm' code.
*/
machine__remove_thread(&session->host_machine, th);
machine__remove_thread(&session->machines.host, th);
}
struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session,

11
tools/perf/util/session.h
View File

@ -30,8 +30,7 @@ struct ordered_samples {
struct perf_session {
struct perf_header header;
unsigned long size;
struct machine host_machine;
struct rb_root machines;
struct machines machines;
struct perf_evlist *evlist;
struct pevent *pevent;
struct events_stats stats;
@ -49,7 +48,7 @@ struct perf_tool;
struct perf_session *perf_session__new(const char *filename, int mode,
bool force, bool repipe,
struct perf_tool *tool);
void perf_session__delete(struct perf_session *self);
void perf_session__delete(struct perf_session *session);
void perf_event_header__bswap(struct perf_event_header *self);
@ -78,22 +77,18 @@ void perf_session__remove_thread(struct perf_session *self, struct thread *th);
static inline
struct machine *perf_session__find_host_machine(struct perf_session *self)
{
return &self->host_machine;
return &self->machines.host;
}
static inline
struct machine *perf_session__find_machine(struct perf_session *self, pid_t pid)
{
if (pid == HOST_KERNEL_ID)
return &self->host_machine;
return machines__find(&self->machines, pid);
}
static inline
struct machine *perf_session__findnew_machine(struct perf_session *self, pid_t pid)
{
if (pid == HOST_KERNEL_ID)
return &self->host_machine;
return machines__findnew(&self->machines, pid);
}