[PATCH 19/37] perf tools: Introduce thread__find_addr_location_time() and friends
From: Namhyung Kim
Date: Wed Dec 24 2014 - 02:19:52 EST
The *_time() variants are for find appropriate map (and symbol) at the
given time. This is based on the fact that map_groups list is sorted
by time in the previous patch.
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxxx>
---
tools/perf/util/event.c | 59 ++++++++++++++++++++++++++++++++++----
tools/perf/util/machine.c | 51 ++++++++++++++++++--------------
tools/perf/util/thread.c | 21 ++++++++++++++
tools/perf/util/thread.h | 10 +++++++
tools/perf/util/unwind-libdw.c | 11 +++----
tools/perf/util/unwind-libunwind.c | 18 ++++++------
6 files changed, 129 insertions(+), 41 deletions(-)
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index 2d04949bdc7d..3bb186a26314 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -731,16 +731,14 @@ int perf_event__process(struct perf_tool *tool __maybe_unused,
return machine__process_event(machine, event, sample);
}
-void thread__find_addr_map(struct thread *thread, u8 cpumode,
- enum map_type type, u64 addr,
- struct addr_location *al)
+static void map_groups__find_addr_map(struct map_groups *mg, u8 cpumode,
+ enum map_type type, u64 addr,
+ struct addr_location *al)
{
- struct map_groups *mg = thread->mg;
struct machine *machine = mg->machine;
bool load_map = false;
al->machine = machine;
- al->thread = thread;
al->addr = addr;
al->cpumode = cpumode;
al->filtered = 0;
@@ -809,6 +807,35 @@ void thread__find_addr_map(struct thread *thread, u8 cpumode,
}
}
+void thread__find_addr_map(struct thread *thread, u8 cpumode,
+ enum map_type type, u64 addr,
+ struct addr_location *al)
+{
+ al->thread = thread;
+ map_groups__find_addr_map(thread->mg, cpumode, type, addr, al);
+}
+
+void thread__find_addr_map_time(struct thread *thread, u8 cpumode,
+ enum map_type type, u64 addr,
+ struct addr_location *al, u64 timestamp)
+{
+ struct map_groups *mg;
+ struct thread *leader;
+
+ if (thread->tid == thread->pid_)
+ leader = thread;
+ else
+ leader = machine__find_thread(thread->mg->machine,
+ thread->pid_, thread->pid_);
+
+ BUG_ON(leader == NULL);
+
+ mg = thread__get_map_groups(leader, timestamp);
+
+ al->thread = thread;
+ map_groups__find_addr_map(mg, cpumode, type, addr, al);
+}
+
void thread__find_addr_location(struct thread *thread,
u8 cpumode, enum map_type type, u64 addr,
struct addr_location *al)
@@ -821,6 +848,21 @@ void thread__find_addr_location(struct thread *thread,
al->sym = NULL;
}
+void thread__find_addr_location_time(struct thread *thread, u8 cpumode,
+ enum map_type type, u64 addr,
+ struct addr_location *al, u64 timestamp)
+{
+ struct map_groups *mg;
+
+ mg = thread__get_map_groups(thread, timestamp);
+ map_groups__find_addr_map(mg, cpumode, type, addr, al);
+ if (al->map != NULL)
+ al->sym = map__find_symbol(al->map, al->addr,
+ mg->machine->symbol_filter);
+ else
+ al->sym = NULL;
+}
+
int perf_event__preprocess_sample(const union perf_event *event,
struct machine *machine,
struct addr_location *al,
@@ -845,7 +887,12 @@ int perf_event__preprocess_sample(const union perf_event *event,
machine->vmlinux_maps[MAP__FUNCTION] == NULL)
machine__create_kernel_maps(machine);
- thread__find_addr_map(thread, cpumode, MAP__FUNCTION, sample->ip, al);
+ /*
+ * sample->time is -1ULL if !PERF_SAMPLE_TIME which ends up
+ * with using most recent map_groups (same as default behavior).
+ */
+ thread__find_addr_map_time(thread, cpumode, MAP__FUNCTION, sample->ip,
+ al, sample->time);
dump_printf(" ...... dso: %s\n",
al->map ? al->map->dso->long_name :
al->level == 'H' ? "[hypervisor]" : "<not found>");
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index beae6e8fe789..ffce0bcd2d9a 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -1466,7 +1466,7 @@ static bool symbol__match_regex(struct symbol *sym, regex_t *regex)
static void ip__resolve_ams(struct thread *thread,
struct addr_map_symbol *ams,
- u64 ip)
+ u64 ip, u64 timestamp)
{
struct addr_location al;
@@ -1478,7 +1478,8 @@ static void ip__resolve_ams(struct thread *thread,
* Thus, we have to try consecutively until we find a match
* or else, the symbol is unknown
*/
- thread__find_cpumode_addr_location(thread, MAP__FUNCTION, ip, &al);
+ thread__find_cpumode_addr_location_time(thread, MAP__FUNCTION, ip, &al,
+ timestamp);
ams->addr = ip;
ams->al_addr = al.addr;
@@ -1486,21 +1487,24 @@ static void ip__resolve_ams(struct thread *thread,
ams->map = al.map;
}
-static void ip__resolve_data(struct thread *thread,
- u8 m, struct addr_map_symbol *ams, u64 addr)
+static void ip__resolve_data(struct thread *thread, u8 m,
+ struct addr_map_symbol *ams,
+ u64 addr, u64 timestamp)
{
struct addr_location al;
memset(&al, 0, sizeof(al));
- thread__find_addr_location(thread, m, MAP__VARIABLE, addr, &al);
+ thread__find_addr_location_time(thread, m, MAP__VARIABLE, addr,
+ &al, timestamp);
if (al.map == NULL) {
/*
* some shared data regions have execute bit set which puts
* their mapping in the MAP__FUNCTION type array.
* Check there as a fallback option before dropping the sample.
*/
- thread__find_addr_location(thread, m, MAP__FUNCTION, addr, &al);
+ thread__find_addr_location_time(thread, m, MAP__FUNCTION, addr,
+ &al, timestamp);
}
ams->addr = addr;
@@ -1517,8 +1521,9 @@ struct mem_info *sample__resolve_mem(struct perf_sample *sample,
if (!mi)
return NULL;
- ip__resolve_ams(al->thread, &mi->iaddr, sample->ip);
- ip__resolve_data(al->thread, al->cpumode, &mi->daddr, sample->addr);
+ ip__resolve_ams(al->thread, &mi->iaddr, sample->ip, sample->time);
+ ip__resolve_data(al->thread, al->cpumode, &mi->daddr, sample->addr,
+ sample->time);
mi->data_src.val = sample->data_src;
return mi;
@@ -1527,19 +1532,20 @@ struct mem_info *sample__resolve_mem(struct perf_sample *sample,
static int add_callchain_ip(struct thread *thread,
struct symbol **parent,
struct addr_location *root_al,
- int cpumode,
- u64 ip)
+ int cpumode, u64 ip, u64 timestamp)
{
struct addr_location al;
al.filtered = 0;
al.sym = NULL;
+
if (cpumode == -1)
- thread__find_cpumode_addr_location(thread, MAP__FUNCTION,
- ip, &al);
+ thread__find_cpumode_addr_location_time(thread, MAP__FUNCTION,
+ ip, &al, timestamp);
else
- thread__find_addr_location(thread, cpumode, MAP__FUNCTION,
- ip, &al);
+ thread__find_addr_location_time(thread, cpumode, MAP__FUNCTION,
+ ip, &al, timestamp);
+
if (al.sym != NULL) {
if (sort__has_parent && !*parent &&
symbol__match_regex(al.sym, &parent_regex))
@@ -1567,8 +1573,10 @@ struct branch_info *sample__resolve_bstack(struct perf_sample *sample,
return NULL;
for (i = 0; i < bs->nr; i++) {
- ip__resolve_ams(al->thread, &bi[i].to, bs->entries[i].to);
- ip__resolve_ams(al->thread, &bi[i].from, bs->entries[i].from);
+ ip__resolve_ams(al->thread, &bi[i].to, bs->entries[i].to,
+ sample->time);
+ ip__resolve_ams(al->thread, &bi[i].from, bs->entries[i].from,
+ sample->time);
bi[i].flags = bs->entries[i].flags;
}
return bi;
@@ -1620,7 +1628,7 @@ static int thread__resolve_callchain_sample(struct thread *thread,
struct branch_stack *branch,
struct symbol **parent,
struct addr_location *root_al,
- int max_stack)
+ int max_stack, u64 timestamp)
{
u8 cpumode = PERF_RECORD_MISC_USER;
int chain_nr = min(max_stack, (int)chain->nr);
@@ -1684,10 +1692,10 @@ static int thread__resolve_callchain_sample(struct thread *thread,
for (i = 0; i < nr; i++) {
err = add_callchain_ip(thread, parent, root_al,
- -1, be[i].to);
+ -1, be[i].to, timestamp);
if (!err)
err = add_callchain_ip(thread, parent, root_al,
- -1, be[i].from);
+ -1, be[i].from, timestamp);
if (err == -EINVAL)
break;
if (err)
@@ -1741,7 +1749,7 @@ static int thread__resolve_callchain_sample(struct thread *thread,
}
err = add_callchain_ip(thread, parent, root_al,
- cpumode, ip);
+ cpumode, ip, timestamp);
if (err == -EINVAL)
break;
if (err)
@@ -1767,7 +1775,8 @@ int thread__resolve_callchain(struct thread *thread,
{
int ret = thread__resolve_callchain_sample(thread, sample->callchain,
sample->branch_stack,
- parent, root_al, max_stack);
+ parent, root_al, max_stack,
+ sample->time);
if (ret)
return ret;
diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c
index 109ceb5e2a85..87c20308b91f 100644
--- a/tools/perf/util/thread.c
+++ b/tools/perf/util/thread.c
@@ -332,3 +332,24 @@ void thread__find_cpumode_addr_location(struct thread *thread,
break;
}
}
+
+void thread__find_cpumode_addr_location_time(struct thread *thread,
+ enum map_type type, u64 addr,
+ struct addr_location *al,
+ u64 timestamp)
+{
+ size_t i;
+ const u8 const cpumodes[] = {
+ PERF_RECORD_MISC_USER,
+ PERF_RECORD_MISC_KERNEL,
+ PERF_RECORD_MISC_GUEST_USER,
+ PERF_RECORD_MISC_GUEST_KERNEL
+ };
+
+ for (i = 0; i < ARRAY_SIZE(cpumodes); i++) {
+ thread__find_addr_location_time(thread, cpumodes[i], type,
+ addr, al, timestamp);
+ if (al->map)
+ break;
+ }
+}
diff --git a/tools/perf/util/thread.h b/tools/perf/util/thread.h
index 8b9a67764613..0b88ca22bc3d 100644
--- a/tools/perf/util/thread.h
+++ b/tools/perf/util/thread.h
@@ -66,14 +66,24 @@ size_t thread__fprintf(struct thread *thread, FILE *fp);
void thread__find_addr_map(struct thread *thread,
u8 cpumode, enum map_type type, u64 addr,
struct addr_location *al);
+void thread__find_addr_map_time(struct thread *thread, u8 cpumode,
+ enum map_type type, u64 addr,
+ struct addr_location *al, u64 timestamp);
void thread__find_addr_location(struct thread *thread,
u8 cpumode, enum map_type type, u64 addr,
struct addr_location *al);
+void thread__find_addr_location_time(struct thread *thread, u8 cpumode,
+ enum map_type type, u64 addr,
+ struct addr_location *al, u64 timestamp);
void thread__find_cpumode_addr_location(struct thread *thread,
enum map_type type, u64 addr,
struct addr_location *al);
+void thread__find_cpumode_addr_location_time(struct thread *thread,
+ enum map_type type, u64 addr,
+ struct addr_location *al,
+ u64 timestamp);
static inline void *thread__priv(struct thread *thread)
{
diff --git a/tools/perf/util/unwind-libdw.c b/tools/perf/util/unwind-libdw.c
index 2dcfe9a7c8d0..ba8d8e41d680 100644
--- a/tools/perf/util/unwind-libdw.c
+++ b/tools/perf/util/unwind-libdw.c
@@ -26,9 +26,10 @@ static int __report_module(struct addr_location *al, u64 ip,
Dwfl_Module *mod;
struct dso *dso = NULL;
- thread__find_addr_location(ui->thread,
- PERF_RECORD_MISC_USER,
- MAP__FUNCTION, ip, al);
+ thread__find_addr_location_time(ui->thread,
+ PERF_RECORD_MISC_USER,
+ MAP__FUNCTION, ip, al,
+ ui->sample->time);
if (al->map)
dso = al->map->dso;
@@ -89,8 +90,8 @@ static int access_dso_mem(struct unwind_info *ui, Dwarf_Addr addr,
struct addr_location al;
ssize_t size;
- thread__find_addr_map(ui->thread, PERF_RECORD_MISC_USER,
- MAP__FUNCTION, addr, &al);
+ thread__find_addr_map_time(ui->thread, PERF_RECORD_MISC_USER,
+ MAP__FUNCTION, addr, &al, ui->sample->time);
if (!al.map) {
pr_debug("unwind: no map for %lx\n", (unsigned long)addr);
return -1;
diff --git a/tools/perf/util/unwind-libunwind.c b/tools/perf/util/unwind-libunwind.c
index 371219a6daf1..94929ec491f3 100644
--- a/tools/perf/util/unwind-libunwind.c
+++ b/tools/perf/util/unwind-libunwind.c
@@ -284,8 +284,8 @@ static struct map *find_map(unw_word_t ip, struct unwind_info *ui)
{
struct addr_location al;
- thread__find_addr_map(ui->thread, PERF_RECORD_MISC_USER,
- MAP__FUNCTION, ip, &al);
+ thread__find_addr_map_time(ui->thread, PERF_RECORD_MISC_USER,
+ MAP__FUNCTION, ip, &al, ui->sample->time);
return al.map;
}
@@ -374,8 +374,8 @@ static int access_dso_mem(struct unwind_info *ui, unw_word_t addr,
struct addr_location al;
ssize_t size;
- thread__find_addr_map(ui->thread, PERF_RECORD_MISC_USER,
- MAP__FUNCTION, addr, &al);
+ thread__find_addr_map_time(ui->thread, PERF_RECORD_MISC_USER,
+ MAP__FUNCTION, addr, &al, ui->sample->time);
if (!al.map) {
pr_debug("unwind: no map for %lx\n", (unsigned long)addr);
return -1;
@@ -476,14 +476,14 @@ static void put_unwind_info(unw_addr_space_t __maybe_unused as,
pr_debug("unwind: put_unwind_info called\n");
}
-static int entry(u64 ip, struct thread *thread,
+static int entry(u64 ip, struct thread *thread, u64 timestamp,
unwind_entry_cb_t cb, void *arg)
{
struct unwind_entry e;
struct addr_location al;
- thread__find_addr_location(thread, PERF_RECORD_MISC_USER,
- MAP__FUNCTION, ip, &al);
+ thread__find_addr_location_time(thread, PERF_RECORD_MISC_USER,
+ MAP__FUNCTION, ip, &al, timestamp);
e.ip = ip;
e.map = al.map;
@@ -585,7 +585,7 @@ static int get_entries(struct unwind_info *ui, unwind_entry_cb_t cb,
unw_word_t ip;
unw_get_reg(&c, UNW_REG_IP, &ip);
- ret = ip ? entry(ip, ui->thread, cb, arg) : 0;
+ ret = ip ? entry(ip, ui->thread, ui->sample->time, cb, arg) : 0;
}
return ret;
@@ -610,7 +610,7 @@ int unwind__get_entries(unwind_entry_cb_t cb, void *arg,
if (ret)
return ret;
- ret = entry(ip, thread, cb, arg);
+ ret = entry(ip, thread, data->time, cb, arg);
if (ret)
return -ENOMEM;
--
2.1.3
--
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