16c00db4bb
Pull AFS fixes from David Howells:
"Here's a set of patches that fix a number of bugs in the in-kernel AFS
client, including:
- Fix directory locking to not use individual page locks for
directory reading/scanning but rather to use a semaphore on the
afs_vnode struct as the directory contents must be read in a single
blob and data from different reads must not be mixed as the entire
contents may be shuffled about between reads.
- Fix address list parsing to handle port specifiers correctly.
- Only give up callback records on a server if we actually talked to
that server (we might not be able to access a server).
- Fix some callback handling bugs, including refcounting,
whole-volume callbacks and when callbacks actually get broken in
response to a CB.CallBack op.
- Fix some server/address rotation bugs, including giving up if we
can't probe a server; giving up if a server says it doesn't have a
volume, but there are more servers to try.
- Fix the decoding of fetched statuses to be OpenAFS compatible.
- Fix the handling of server lookups in Cache Manager ops (such as
CB.InitCallBackState3) to use a UUID if possible and to handle no
server being found.
- Fix a bug in server lookup where not all addresses are compared.
- Fix the non-encryption of calls that prevents some servers from
being accessed (this also requires an AF_RXRPC patch that has
already gone in through the net tree).
There's also a patch that adds tracepoints to log Cache Manager ops
that don't find a matching server, either by UUID or by address"
* tag 'afs-fixes-20180514' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
afs: Fix the non-encryption of calls
afs: Fix CB.CallBack handling
afs: Fix whole-volume callback handling
afs: Fix afs_find_server search loop
afs: Fix the handling of an unfound server in CM operations
afs: Add a tracepoint to record callbacks from unlisted servers
afs: Fix the handling of CB.InitCallBackState3 to find the server by UUID
afs: Fix VNOVOL handling in address rotation
afs: Fix AFSFetchStatus decoder to provide OpenAFS compatibility
afs: Fix server rotation's handling of fileserver probe failure
afs: Fix refcounting in callback registration
afs: Fix giving up callbacks on server destruction
afs: Fix address list parsing
afs: Fix directory page locking
78 lines
2.2 KiB
Python
78 lines
2.2 KiB
Python
# failed system call counts, by pid
|
|
# (c) 2010, Tom Zanussi <tzanussi@gmail.com>
|
|
# Licensed under the terms of the GNU GPL License version 2
|
|
#
|
|
# Displays system-wide failed system call totals, broken down by pid.
|
|
# If a [comm] arg is specified, only syscalls called by [comm] are displayed.
|
|
|
|
import os
|
|
import sys
|
|
|
|
sys.path.append(os.environ['PERF_EXEC_PATH'] + \
|
|
'/scripts/python/Perf-Trace-Util/lib/Perf/Trace')
|
|
|
|
from perf_trace_context import *
|
|
from Core import *
|
|
from Util import *
|
|
|
|
usage = "perf script -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:
|
|
try:
|
|
for_pid = int(sys.argv[1])
|
|
except:
|
|
for_comm = sys.argv[1]
|
|
|
|
syscalls = autodict()
|
|
|
|
def trace_begin():
|
|
print "Press control+C to stop and show the summary"
|
|
|
|
def trace_end():
|
|
print_error_totals()
|
|
|
|
def raw_syscalls__sys_exit(event_name, context, common_cpu,
|
|
common_secs, common_nsecs, common_pid, common_comm,
|
|
common_callchain, id, ret):
|
|
if (for_comm and common_comm != for_comm) or \
|
|
(for_pid and common_pid != for_pid ):
|
|
return
|
|
|
|
if ret < 0:
|
|
try:
|
|
syscalls[common_comm][common_pid][id][ret] += 1
|
|
except TypeError:
|
|
syscalls[common_comm][common_pid][id][ret] = 1
|
|
|
|
def syscalls__sys_exit(event_name, context, common_cpu,
|
|
common_secs, common_nsecs, common_pid, common_comm,
|
|
id, ret):
|
|
raw_syscalls__sys_exit(**locals())
|
|
|
|
def print_error_totals():
|
|
if for_comm is not None:
|
|
print "\nsyscall errors for %s:\n\n" % (for_comm),
|
|
else:
|
|
print "\nsyscall errors:\n\n",
|
|
|
|
print "%-30s %10s\n" % ("comm [pid]", "count"),
|
|
print "%-30s %10s\n" % ("------------------------------", \
|
|
"----------"),
|
|
|
|
comm_keys = syscalls.keys()
|
|
for comm in comm_keys:
|
|
pid_keys = syscalls[comm].keys()
|
|
for pid in pid_keys:
|
|
print "\n%s [%d]\n" % (comm, pid),
|
|
id_keys = syscalls[comm][pid].keys()
|
|
for id in id_keys:
|
|
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 = %-20s %10d\n" % (strerror(ret), val),
|