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perf script: Add callchain to generic and tracepoint events

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This provides valuable information for tracing performance problems.

Since this change alters the interface for the python scripts, also
adjust the script generation and the provided scripts.

Signed-off-by: Joseph Schuchart <joseph.schuchart@tu-dresden.de>
Acked-by: Thomas Ilsche <thomas.ilsche@tu-dresden.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Thomas Ilsche <thomas.ilsche@tu-dresden.de>
Link: http://lkml.kernel.org/r/53BE7E1B.10503@tu-dresden.de
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Joseph Schuchart 2014-07-10 13:50:51 +02:00 committed by Arnaldo Carvalho de Melo
parent 05f832e3a2
commit 0f5f5bcd11
11 changed files with 146 additions and 48 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/Core.py
View file

@ -107,12 +107,13 @@ def taskState(state):
class EventHeaders:
def __init__(self, common_cpu, common_secs, common_nsecs,
common_pid, common_comm):
common_pid, common_comm, common_callchain):
self.cpu = common_cpu
self.secs = common_secs
self.nsecs = common_nsecs
self.pid = common_pid
self.comm = common_comm
self.callchain = common_callchain
def ts(self):
return (self.secs * (10 ** 9)) + self.nsecs

4
tools/perf/scripts/python/check-perf-trace.py
View file

@ -27,7 +27,7 @@ def trace_end():
def irq__softirq_entry(event_name, context, common_cpu,
common_secs, common_nsecs, common_pid, common_comm,
vec):
common_callchain, vec):
print_header(event_name, common_cpu, common_secs, common_nsecs,
common_pid, common_comm)
@ -38,7 +38,7 @@ def irq__softirq_entry(event_name, context, common_cpu,
def kmem__kmalloc(event_name, context, common_cpu,
common_secs, common_nsecs, common_pid, common_comm,
call_site, ptr, bytes_req, bytes_alloc,
common_callchain, call_site, ptr, bytes_req, bytes_alloc,
gfp_flags):
print_header(event_name, common_cpu, common_secs, common_nsecs,
common_pid, common_comm)

2
tools/perf/scripts/python/failed-syscalls-by-pid.py
View file

@ -39,7 +39,7 @@ def trace_end():
def raw_syscalls__sys_exit(event_name, context, common_cpu,
common_secs, common_nsecs, common_pid, common_comm,
id, ret):
common_callchain, id, ret):
if (for_comm and common_comm != for_comm) or \
(for_pid and common_pid != for_pid ):
return

4
tools/perf/scripts/python/futex-contention.py
View file

@ -21,7 +21,7 @@ thread_blocktime = {}
lock_waits = {} # long-lived stats on (tid,lock) blockage elapsed time
process_names = {} # long-lived pid-to-execname mapping
def syscalls__sys_enter_futex(event, ctxt, cpu, s, ns, tid, comm,
def syscalls__sys_enter_futex(event, ctxt, cpu, s, ns, tid, comm, callchain,
nr, uaddr, op, val, utime, uaddr2, val3):
cmd = op & FUTEX_CMD_MASK
if cmd != FUTEX_WAIT:
@ -31,7 +31,7 @@ def syscalls__sys_enter_futex(event, ctxt, cpu, s, ns, tid, comm,
thread_thislock[tid] = uaddr
thread_blocktime[tid] = nsecs(s, ns)
def syscalls__sys_exit_futex(event, ctxt, cpu, s, ns, tid, comm,
def syscalls__sys_exit_futex(event, ctxt, cpu, s, ns, tid, comm, callchain,
nr, ret):
if thread_blocktime.has_key(tid):
elapsed = nsecs(s, ns) - thread_blocktime[tid]

2
tools/perf/scripts/python/net_dropmonitor.py
View file

@ -66,7 +66,7 @@ def trace_end():
print_drop_table()
# called from perf, when it finds a correspoinding event
def skb__kfree_skb(name, context, cpu, sec, nsec, pid, comm,
def skb__kfree_skb(name, context, cpu, sec, nsec, pid, comm, callchain,
skbaddr, location, protocol):
slocation = str(location)
try:

26
tools/perf/scripts/python/netdev-times.py
View file

@ -224,75 +224,75 @@ def trace_end():
(len(rx_skb_list), of_count_rx_skb_list)
# called from perf, when it finds a correspoinding event
def irq__softirq_entry(name, context, cpu, sec, nsec, pid, comm, vec):
def irq__softirq_entry(name, context, cpu, sec, nsec, pid, comm, callchain, vec):
if symbol_str("irq__softirq_entry", "vec", vec) != "NET_RX":
return
event_info = (name, context, cpu, nsecs(sec, nsec), pid, comm, vec)
all_event_list.append(event_info)
def irq__softirq_exit(name, context, cpu, sec, nsec, pid, comm, vec):
def irq__softirq_exit(name, context, cpu, sec, nsec, pid, comm, callchain, vec):
if symbol_str("irq__softirq_entry", "vec", vec) != "NET_RX":
return
event_info = (name, context, cpu, nsecs(sec, nsec), pid, comm, vec)
all_event_list.append(event_info)
def irq__softirq_raise(name, context, cpu, sec, nsec, pid, comm, vec):
def irq__softirq_raise(name, context, cpu, sec, nsec, pid, comm, callchain, vec):
if symbol_str("irq__softirq_entry", "vec", vec) != "NET_RX":
return
event_info = (name, context, cpu, nsecs(sec, nsec), pid, comm, vec)
all_event_list.append(event_info)
def irq__irq_handler_entry(name, context, cpu, sec, nsec, pid, comm,
irq, irq_name):
callchain, irq, irq_name):
event_info = (name, context, cpu, nsecs(sec, nsec), pid, comm,
irq, irq_name)
all_event_list.append(event_info)
def irq__irq_handler_exit(name, context, cpu, sec, nsec, pid, comm, irq, ret):
def irq__irq_handler_exit(name, context, cpu, sec, nsec, pid, comm, callchain, irq, ret):
event_info = (name, context, cpu, nsecs(sec, nsec), pid, comm, irq, ret)
all_event_list.append(event_info)
def napi__napi_poll(name, context, cpu, sec, nsec, pid, comm, napi, dev_name):
def napi__napi_poll(name, context, cpu, sec, nsec, pid, comm, callchain, napi, dev_name):
event_info = (name, context, cpu, nsecs(sec, nsec), pid, comm,
napi, dev_name)
all_event_list.append(event_info)
def net__netif_receive_skb(name, context, cpu, sec, nsec, pid, comm, skbaddr,
def net__netif_receive_skb(name, context, cpu, sec, nsec, pid, comm, callchain, skbaddr,
skblen, dev_name):
event_info = (name, context, cpu, nsecs(sec, nsec), pid, comm,
skbaddr, skblen, dev_name)
all_event_list.append(event_info)
def net__netif_rx(name, context, cpu, sec, nsec, pid, comm, skbaddr,
def net__netif_rx(name, context, cpu, sec, nsec, pid, comm, callchain, skbaddr,
skblen, dev_name):
event_info = (name, context, cpu, nsecs(sec, nsec), pid, comm,
skbaddr, skblen, dev_name)
all_event_list.append(event_info)
def net__net_dev_queue(name, context, cpu, sec, nsec, pid, comm,
def net__net_dev_queue(name, context, cpu, sec, nsec, pid, comm, callchain,
skbaddr, skblen, dev_name):
event_info = (name, context, cpu, nsecs(sec, nsec), pid, comm,
skbaddr, skblen, dev_name)
all_event_list.append(event_info)
def net__net_dev_xmit(name, context, cpu, sec, nsec, pid, comm,
def net__net_dev_xmit(name, context, cpu, sec, nsec, pid, comm, callchain,
skbaddr, skblen, rc, dev_name):
event_info = (name, context, cpu, nsecs(sec, nsec), pid, comm,
skbaddr, skblen, rc ,dev_name)
all_event_list.append(event_info)
def skb__kfree_skb(name, context, cpu, sec, nsec, pid, comm,
def skb__kfree_skb(name, context, cpu, sec, nsec, pid, comm, callchain,
skbaddr, protocol, location):
event_info = (name, context, cpu, nsecs(sec, nsec), pid, comm,
skbaddr, protocol, location)
all_event_list.append(event_info)
def skb__consume_skb(name, context, cpu, sec, nsec, pid, comm, skbaddr):
def skb__consume_skb(name, context, cpu, sec, nsec, pid, comm, callchain, skbaddr):
event_info = (name, context, cpu, nsecs(sec, nsec), pid, comm,
skbaddr)
all_event_list.append(event_info)
def skb__skb_copy_datagram_iovec(name, context, cpu, sec, nsec, pid, comm,
def skb__skb_copy_datagram_iovec(name, context, cpu, sec, nsec, pid, comm, callchain,
skbaddr, skblen):
event_info = (name, context, cpu, nsecs(sec, nsec), pid, comm,
skbaddr, skblen)

41
tools/perf/scripts/python/sched-migration.py
View file

@ -369,93 +369,92 @@ def trace_end():
def sched__sched_stat_runtime(event_name, context, common_cpu,
common_secs, common_nsecs, common_pid, common_comm,
comm, pid, runtime, vruntime):
common_callchain, comm, pid, runtime, vruntime):
pass
def sched__sched_stat_iowait(event_name, context, common_cpu,
common_secs, common_nsecs, common_pid, common_comm,
comm, pid, delay):
common_callchain, comm, pid, delay):
pass
def sched__sched_stat_sleep(event_name, context, common_cpu,
common_secs, common_nsecs, common_pid, common_comm,
comm, pid, delay):
common_callchain, comm, pid, delay):
pass
def sched__sched_stat_wait(event_name, context, common_cpu,
common_secs, common_nsecs, common_pid, common_comm,
comm, pid, delay):
common_callchain, comm, pid, delay):
pass
def sched__sched_process_fork(event_name, context, common_cpu,
common_secs, common_nsecs, common_pid, common_comm,
parent_comm, parent_pid, child_comm, child_pid):
common_callchain, parent_comm, parent_pid, child_comm, child_pid):
pass
def sched__sched_process_wait(event_name, context, common_cpu,
common_secs, common_nsecs, common_pid, common_comm,
comm, pid, prio):
common_callchain, comm, pid, prio):
pass
def sched__sched_process_exit(event_name, context, common_cpu,
common_secs, common_nsecs, common_pid, common_comm,
comm, pid, prio):
common_callchain, comm, pid, prio):
pass
def sched__sched_process_free(event_name, context, common_cpu,
common_secs, common_nsecs, common_pid, common_comm,
comm, pid, prio):
common_callchain, comm, pid, prio):
pass
def sched__sched_migrate_task(event_name, context, common_cpu,
common_secs, common_nsecs, common_pid, common_comm,
comm, pid, prio, orig_cpu,
common_callchain, comm, pid, prio, orig_cpu,
dest_cpu):
headers = EventHeaders(common_cpu, common_secs, common_nsecs,
common_pid, common_comm)
common_pid, common_comm, common_callchain)
parser.migrate(headers, pid, prio, orig_cpu, dest_cpu)
def sched__sched_switch(event_name, context, common_cpu,
common_secs, common_nsecs, common_pid, common_comm,
common_secs, common_nsecs, common_pid, common_comm, common_callchain,
prev_comm, prev_pid, prev_prio, prev_state,
next_comm, next_pid, next_prio):
headers = EventHeaders(common_cpu, common_secs, common_nsecs,
common_pid, common_comm)
common_pid, common_comm, common_callchain)
parser.sched_switch(headers, prev_comm, prev_pid, prev_prio, prev_state,
next_comm, next_pid, next_prio)
def sched__sched_wakeup_new(event_name, context, common_cpu,
common_secs, common_nsecs, common_pid, common_comm,
comm, pid, prio, success,
common_callchain, comm, pid, prio, success,
target_cpu):
headers = EventHeaders(common_cpu, common_secs, common_nsecs,
common_pid, common_comm)
common_pid, common_comm, common_callchain)
parser.wake_up(headers, comm, pid, success, target_cpu, 1)
def sched__sched_wakeup(event_name, context, common_cpu,
common_secs, common_nsecs, common_pid, common_comm,
comm, pid, prio, success,
common_callchain, comm, pid, prio, success,
target_cpu):
headers = EventHeaders(common_cpu, common_secs, common_nsecs,
common_pid, common_comm)
common_pid, common_comm, common_callchain)
parser.wake_up(headers, comm, pid, success, target_cpu, 0)
def sched__sched_wait_task(event_name, context, common_cpu,
common_secs, common_nsecs, common_pid, common_comm,
comm, pid, prio):
common_callchain, comm, pid, prio):
pass
def sched__sched_kthread_stop_ret(event_name, context, common_cpu,
common_secs, common_nsecs, common_pid, common_comm,
ret):
common_callchain, ret):
pass
def sched__sched_kthread_stop(event_name, context, common_cpu,
common_secs, common_nsecs, common_pid, common_comm,
comm, pid):
common_callchain, comm, pid):
pass
def trace_unhandled(event_name, context, common_cpu, common_secs, common_nsecs,
common_pid, common_comm):
def trace_unhandled(event_name, context, event_fields_dict):
pass

2
tools/perf/scripts/python/sctop.py
View file

@ -44,7 +44,7 @@ def trace_begin():
def raw_syscalls__sys_enter(event_name, context, common_cpu,
common_secs, common_nsecs, common_pid, common_comm,
id, args):
common_callchain, id, args):
if for_comm is not None:
if common_comm != for_comm:
return

2
tools/perf/scripts/python/syscall-counts-by-pid.py
View file

@ -38,7 +38,7 @@ def trace_end():
def raw_syscalls__sys_enter(event_name, context, common_cpu,
common_secs, common_nsecs, common_pid, common_comm,
id, args):
common_callchain, id, args):
if (for_comm and common_comm != for_comm) or \
(for_pid and common_pid != for_pid ):

2
tools/perf/scripts/python/syscall-counts.py
View file

@ -35,7 +35,7 @@ def trace_end():
def raw_syscalls__sys_enter(event_name, context, common_cpu,
common_secs, common_nsecs, common_pid, common_comm,
id, args):
common_callchain, id, args):
if for_comm is not None:
if common_comm != for_comm:
return

106
tools/perf/util/scripting-engines/trace-event-python.c
View file

@ -32,6 +32,7 @@
#include "../event.h"
#include "../thread.h"
#include "../trace-event.h"
#include "../machine.h"
PyMODINIT_FUNC initperf_trace_context(void);
@ -278,12 +279,90 @@ static PyObject *get_field_numeric_entry(struct event_format *event,
return obj;
}
static PyObject *python_process_callchain(struct perf_sample *sample,
struct perf_evsel *evsel,
struct addr_location *al)
{
PyObject *pylist;
pylist = PyList_New(0);
if (!pylist)
Py_FatalError("couldn't create Python list");
if (!symbol_conf.use_callchain || !sample->callchain)
goto exit;
if (machine__resolve_callchain(al->machine, evsel, al->thread,
sample, NULL, NULL,
PERF_MAX_STACK_DEPTH) != 0) {
pr_err("Failed to resolve callchain. Skipping\n");
goto exit;
}
callchain_cursor_commit(&callchain_cursor);
while (1) {
PyObject *pyelem;
struct callchain_cursor_node *node;
node = callchain_cursor_current(&callchain_cursor);
if (!node)
break;
pyelem = PyDict_New();
if (!pyelem)
Py_FatalError("couldn't create Python dictionary");
pydict_set_item_string_decref(pyelem, "ip",
PyLong_FromUnsignedLongLong(node->ip));
if (node->sym) {
PyObject *pysym = PyDict_New();
if (!pysym)
Py_FatalError("couldn't create Python dictionary");
pydict_set_item_string_decref(pysym, "start",
PyLong_FromUnsignedLongLong(node->sym->start));
pydict_set_item_string_decref(pysym, "end",
PyLong_FromUnsignedLongLong(node->sym->end));
pydict_set_item_string_decref(pysym, "binding",
PyInt_FromLong(node->sym->binding));
pydict_set_item_string_decref(pysym, "name",
PyString_FromStringAndSize(node->sym->name,
node->sym->namelen));
pydict_set_item_string_decref(pyelem, "sym", pysym);
}
if (node->map) {
struct map *map = node->map;
const char *dsoname = "[unknown]";
if (map && map->dso && (map->dso->name || map->dso->long_name)) {
if (symbol_conf.show_kernel_path && map->dso->long_name)
dsoname = map->dso->long_name;
else if (map->dso->name)
dsoname = map->dso->name;
}
pydict_set_item_string_decref(pyelem, "dso",
PyString_FromString(dsoname));
}
callchain_cursor_advance(&callchain_cursor);
PyList_Append(pylist, pyelem);
Py_DECREF(pyelem);
}
exit:
return pylist;
}
static void python_process_tracepoint(struct perf_sample *sample,
struct perf_evsel *evsel,
struct thread *thread,
struct addr_location *al)
{
PyObject *handler, *retval, *context, *t, *obj, *dict = NULL;
PyObject *handler, *retval, *context, *t, *obj, *callchain;
PyObject *dict = NULL;
static char handler_name[256];
struct format_field *field;
unsigned long s, ns;
@ -326,18 +405,23 @@ static void python_process_tracepoint(struct perf_sample *sample,
PyTuple_SetItem(t, n++, PyString_FromString(handler_name));
PyTuple_SetItem(t, n++, context);
/* ip unwinding */
callchain = python_process_callchain(sample, evsel, al);
if (handler) {
PyTuple_SetItem(t, n++, PyInt_FromLong(cpu));
PyTuple_SetItem(t, n++, PyInt_FromLong(s));
PyTuple_SetItem(t, n++, PyInt_FromLong(ns));
PyTuple_SetItem(t, n++, PyInt_FromLong(pid));
PyTuple_SetItem(t, n++, PyString_FromString(comm));
PyTuple_SetItem(t, n++, callchain);
} else {
pydict_set_item_string_decref(dict, "common_cpu", PyInt_FromLong(cpu));
pydict_set_item_string_decref(dict, "common_s", PyInt_FromLong(s));
pydict_set_item_string_decref(dict, "common_ns", PyInt_FromLong(ns));
pydict_set_item_string_decref(dict, "common_pid", PyInt_FromLong(pid));
pydict_set_item_string_decref(dict, "common_comm", PyString_FromString(comm));
pydict_set_item_string_decref(dict, "common_callchain", callchain);
}
for (field = event->format.fields; field; field = field->next) {
if (field->flags & FIELD_IS_STRING) {
@ -357,6 +441,7 @@ static void python_process_tracepoint(struct perf_sample *sample,
pydict_set_item_string_decref(dict, field->name, obj);
}
if (!handler)
PyTuple_SetItem(t, n++, dict);
@ -388,7 +473,7 @@ static void python_process_general_event(struct perf_sample *sample,
struct thread *thread,
struct addr_location *al)
{
PyObject *handler, *retval, *t, *dict;
PyObject *handler, *retval, *t, *dict, *callchain;
static char handler_name[64];
unsigned n = 0;
@ -428,6 +513,10 @@ static void python_process_general_event(struct perf_sample *sample,
PyString_FromString(al->sym->name));
}
/* ip unwinding */
callchain = python_process_callchain(sample, evsel, al);
pydict_set_item_string_decref(dict, "callchain", callchain);
PyTuple_SetItem(t, n++, dict);
if (_PyTuple_Resize(&t, n) == -1)
Py_FatalError("error resizing Python tuple");
@ -624,6 +713,7 @@ static int python_generate_script(struct pevent *pevent, const char *outfile)
fprintf(ofp, "common_nsecs, ");
fprintf(ofp, "common_pid, ");
fprintf(ofp, "common_comm,\n\t");
fprintf(ofp, "common_callchain, ");
not_first = 0;
count = 0;
@ -667,7 +757,7 @@ static int python_generate_script(struct pevent *pevent, const char *outfile)
fprintf(ofp, "%%u");
}
fprintf(ofp, "\\n\" %% \\\n\t\t(");
fprintf(ofp, "\" %% \\\n\t\t(");
not_first = 0;
count = 0;
@ -703,7 +793,15 @@ static int python_generate_script(struct pevent *pevent, const char *outfile)
fprintf(ofp, "%s", f->name);
}
fprintf(ofp, "),\n\n");
fprintf(ofp, ")\n\n");
fprintf(ofp, "\t\tfor node in common_callchain:");
fprintf(ofp, "\n\t\t\tif 'sym' in node:");
fprintf(ofp, "\n\t\t\t\tprint \"\\t[%%x] %%s\" %% (node['ip'], node['sym']['name'])");
fprintf(ofp, "\n\t\t\telse:");
fprintf(ofp, "\n\t\t\t\tprint \"\t[%%x]\" %% (node['ip'])\n\n");
fprintf(ofp, "\t\tprint \"\\n\"\n\n");
}
fprintf(ofp, "def trace_unhandled(event_name, context, "