[PATCH 25/42] perf tools: Introduce thread__find_addr_location_time() and friends
From: Namhyung Kim
Date: Thu Jan 29 2015 - 03:15:24 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 | 80 +++++++++++++++++++++++++++++++++-----
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, 146 insertions(+), 45 deletions(-)
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index 1558a7085c7f..e7152a6e3043 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -732,16 +732,14 @@ 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;
@@ -810,6 +808,36 @@ 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__findnew_thread_time(thread->mg->machine,
+ thread->pid_,
+ thread->pid_,
+ timestamp);
+ 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)
@@ -822,6 +850,21 @@ 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,
@@ -854,7 +897,13 @@ 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);
+ if (session && perf_session__has_index(session))
+ thread__find_addr_map_time(thread, cpumode, MAP__FUNCTION,
+ sample->ip, al, sample->time);
+ else
+ thread__find_addr_map(thread, cpumode, MAP__FUNCTION,
+ sample->ip, al);
+
dump_printf(" ...... dso: %s\n",
al->map ? al->map->dso->long_name :
al->level == 'H' ? "[hypervisor]" : "<not found>");
@@ -915,15 +964,26 @@ void perf_event__preprocess_sample_addr(union perf_event *event,
struct perf_sample *sample,
struct thread *thread,
struct addr_location *al,
- struct perf_session *session __maybe_unused)
+ struct perf_session *session)
{
u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
- thread__find_addr_map(thread, cpumode, MAP__FUNCTION, sample->addr, al);
- if (!al->map)
- thread__find_addr_map(thread, cpumode, MAP__VARIABLE,
+ if (session && perf_session__has_index(session))
+ thread__find_addr_map_time(thread, cpumode, MAP__FUNCTION,
+ sample->addr, al, sample->time);
+ else
+ thread__find_addr_map(thread, cpumode, MAP__FUNCTION,
sample->addr, al);
+ if (!al->map) {
+ if (session && perf_session__has_index(session))
+ thread__find_addr_map_time(thread, cpumode, MAP__VARIABLE,
+ sample->addr, al, sample->time);
+ else
+ thread__find_addr_map(thread, cpumode, MAP__VARIABLE,
+ sample->addr, al);
+ }
+
al->cpu = sample->cpu;
al->sym = NULL;
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index 09c2edccccd9..7dc044b93cf8 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -1471,7 +1471,7 @@ 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;
@@ -1483,7 +1483,8 @@ 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;
@@ -1491,21 +1492,24 @@ 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;
@@ -1522,8 +1526,9 @@ 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;
@@ -1533,15 +1538,16 @@ static int add_callchain_ip(struct thread *thread,
struct symbol **parent,
struct addr_location *root_al,
bool branch_history,
- u64 ip)
+ u64 ip, u64 timestamp)
{
struct addr_location al;
al.filtered = 0;
al.sym = NULL;
+
if (branch_history)
- thread__find_cpumode_addr_location(thread, MAP__FUNCTION,
- ip, &al);
+ thread__find_cpumode_addr_location_time(thread, MAP__FUNCTION,
+ ip, &al, timestamp);
else {
u8 cpumode = PERF_RECORD_MISC_USER;
@@ -1568,8 +1574,8 @@ static int add_callchain_ip(struct thread *thread,
}
return 0;
}
- 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) {
@@ -1599,8 +1605,10 @@ 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;
@@ -1652,7 +1660,7 @@ 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)
{
int chain_nr = min(max_stack, (int)chain->nr);
int i, j, err;
@@ -1713,10 +1721,10 @@ static int thread__resolve_callchain_sample(struct thread *thread,
for (i = 0; i < nr; i++) {
err = add_callchain_ip(thread, parent, root_al,
- true, be[i].to);
+ true, be[i].to, timestamp);
if (!err)
err = add_callchain_ip(thread, parent, root_al,
- true, be[i].from);
+ true, be[i].from, timestamp);
if (err == -EINVAL)
break;
if (err)
@@ -1745,8 +1753,8 @@ static int thread__resolve_callchain_sample(struct thread *thread,
#endif
ip = chain->ips[j];
- err = add_callchain_ip(thread, parent, root_al, false, ip);
-
+ err = add_callchain_ip(thread, parent, root_al, false, ip,
+ timestamp);
if (err)
return (err < 0) ? err : 0;
}
@@ -1770,7 +1778,8 @@ 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 895c74683c81..293157dafd2c 100644
--- a/tools/perf/util/thread.c
+++ b/tools/perf/util/thread.c
@@ -331,3 +331,24 @@ 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 08cafa2d97f9..5209ad5adadf 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 6edf535f65c2..7ed6eaf232b6 100644
--- a/tools/perf/util/unwind-libunwind.c
+++ b/tools/perf/util/unwind-libunwind.c
@@ -306,8 +306,8 @@ 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;
}
@@ -400,8 +400,8 @@ 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;
@@ -502,14 +502,14 @@ 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;
@@ -611,7 +611,7 @@ 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;
@@ -636,7 +636,7 @@ 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;
--
2.2.2
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/