From 876650e6c3209861a8949111140d805b3440951f Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Tue, 18 Dec 2012 19:15:48 -0300 Subject: [PATCH] perf machine: Introduce struct machines 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 Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-c700rsiphpmzv8klogojpfut@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-record.c | 4 +-- tools/perf/builtin-report.c | 2 +- tools/perf/builtin-top.c | 4 +-- tools/perf/tests/hists_link.c | 17 ++++------ tools/perf/util/header.c | 12 +++---- tools/perf/util/machine.c | 64 +++++++++++++++++++++++------------ tools/perf/util/machine.h | 32 +++++++++++------- tools/perf/util/session.c | 30 +++++++--------- tools/perf/util/session.h | 11 ++---- 9 files changed, 95 insertions(+), 81 deletions(-) diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 69e28950a328..a0b2427b509d 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -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) diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index 5134acf1c39a..13cdf61c4f82 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -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 && diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 996b10c702ba..e0ecebdde3fe 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -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); diff --git a/tools/perf/tests/hists_link.c b/tools/perf/tests/hists_link.c index 0f1aae3b8a99..27860a082381 100644 --- a/tools/perf/tests/hists_link.c +++ b/tools/perf/tests/hists_link.c @@ -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; } diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index bb578d2d10f9..fccd69dbbbb9 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -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); } diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c index 71fa90391fe4..efdb38e65a92 100644 --- a/tools/perf/util/machine.c +++ b/tools/perf/util/machine.c @@ -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 @@ out: 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 @@ failure: 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); diff --git a/tools/perf/util/machine.h b/tools/perf/util/machine.h index e11236878ec1..5ac5892f2326 100644 --- a/tools/perf/util/machine.h +++ b/tools/perf/util/machine.h @@ -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; +}; + +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 rb_root *machines, pid_t pid, +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); diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index b0bcc328d1fb..046b057c8f7f 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -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 @@ out_delete: 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, diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h index 57066cb867a6..de4e68716626 100644 --- a/tools/perf/util/session.h +++ b/tools/perf/util/session.h @@ -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); } -- 2.30.2