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
2.4 KiB
Python
78 lines
2.4 KiB
Python
#!/usr/bin/env python
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# SPDX-License-Identifier: GPL-2.0
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data = {}
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times = []
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threads = []
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cpus = []
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def get_key(time, event, cpu, thread):
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return "%d-%s-%d-%d" % (time, event, cpu, thread)
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def store_key(time, cpu, thread):
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if (time not in times):
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times.append(time)
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if (cpu not in cpus):
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cpus.append(cpu)
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if (thread not in threads):
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threads.append(thread)
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def store(time, event, cpu, thread, val, ena, run):
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#print "event %s cpu %d, thread %d, time %d, val %d, ena %d, run %d" % \
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# (event, cpu, thread, time, val, ena, run)
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store_key(time, cpu, thread)
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key = get_key(time, event, cpu, thread)
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data[key] = [ val, ena, run]
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def get(time, event, cpu, thread):
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key = get_key(time, event, cpu, thread)
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return data[key][0]
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def stat__cycles_k(cpu, thread, time, val, ena, run):
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store(time, "cycles", cpu, thread, val, ena, run);
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def stat__instructions_k(cpu, thread, time, val, ena, run):
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store(time, "instructions", cpu, thread, val, ena, run);
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def stat__cycles_u(cpu, thread, time, val, ena, run):
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store(time, "cycles", cpu, thread, val, ena, run);
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def stat__instructions_u(cpu, thread, time, val, ena, run):
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store(time, "instructions", cpu, thread, val, ena, run);
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def stat__cycles(cpu, thread, time, val, ena, run):
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store(time, "cycles", cpu, thread, val, ena, run);
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def stat__instructions(cpu, thread, time, val, ena, run):
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store(time, "instructions", cpu, thread, val, ena, run);
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def stat__interval(time):
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for cpu in cpus:
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for thread in threads:
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cyc = get(time, "cycles", cpu, thread)
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ins = get(time, "instructions", cpu, thread)
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cpi = 0
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if ins != 0:
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cpi = cyc/float(ins)
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print "%15f: cpu %d, thread %d -> cpi %f (%d/%d)" % (time/(float(1000000000)), cpu, thread, cpi, cyc, ins)
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def trace_end():
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pass
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# XXX trace_end callback could be used as an alternative place
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# to compute same values as in the script above:
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#
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# for time in times:
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# for cpu in cpus:
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# for thread in threads:
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# cyc = get(time, "cycles", cpu, thread)
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# ins = get(time, "instructions", cpu, thread)
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#
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# if ins != 0:
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# cpi = cyc/float(ins)
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#
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# print "time %.9f, cpu %d, thread %d -> cpi %f" % (time/(float(1000000000)), cpu, thread, cpi)
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