1 files changed, 13 insertions, 8 deletions

diff --git a/tools/perf/scripts/python/failed-syscalls-by-pid.py b/tools/perf/scripts/python/failed-syscalls-by-pid.py
index 0ca02278fe69..acd7848717b3 100644
--- a/tools/perf/scripts/python/failed-syscalls-by-pid.py
+++ b/tools/perf/scripts/python/failed-syscalls-by-pid.py
@@ -13,21 +13,26 @@ sys.path.append(os.environ['PERF_EXEC_PATH'] + \
 
 from perf_trace_context import *
 from Core import *
+from Util import *
 
-usage = "perf trace -s syscall-counts-by-pid.py [comm]\n";
+usage = "perf trace -s syscall-counts-by-pid.py [comm|pid]\n";
 
 for_comm = None
+for_pid = None
 
 if len(sys.argv) > 2:
         sys.exit(usage)
 
 if len(sys.argv) > 1:
-        for_comm = sys.argv[1]
+        try:
+                for_pid = int(sys.argv[1])
+        except:
+                for_comm = sys.argv[1]
 
 syscalls = autodict()
 
 def trace_begin():
-        pass
+        print "Press control+C to stop and show the summary"
 
 def trace_end():
         print_error_totals()
@@ -35,9 +40,9 @@ def trace_end():
 def raw_syscalls__sys_exit(event_name, context, common_cpu,
         common_secs, common_nsecs, common_pid, common_comm,
         id, ret):
-        if for_comm is not None:
-                if common_comm != for_comm:
-                        return
+        if (for_comm and common_comm != for_comm) or \
+           (for_pid  and common_pid  != for_pid ):
+                return
 
         if ret < 0:
                 try:
@@ -62,7 +67,7 @@ def print_error_totals():
                     print "\n%s [%d]\n" % (comm, pid),
                     id_keys = syscalls[comm][pid].keys()
                     for id in id_keys:
-                            print "  syscall: %-16d\n" % (id),
+                            print "  syscall: %-16s\n" % syscall_name(id),
                             ret_keys = syscalls[comm][pid][id].keys()
                             for ret, val in sorted(syscalls[comm][pid][id].iteritems(), key = lambda(k, v): (v, k),  reverse = True):
-                                    print "    err = %-20d  %10d\n" % (ret, val),
+                                    print "    err = %-20s  %10d\n" % (strerror(ret), val),