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
64 lines
3.3 KiB
Text
64 lines
3.3 KiB
Text
The struct perf_event_attr test (attr tests) support
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====================================================
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This testing support is embedded into perf directly and is governed
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by the PERF_TEST_ATTR environment variable and hook inside the
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sys_perf_event_open function.
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The general idea is to store 'struct perf_event_attr' details for
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each event created within single perf command. Each event details
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are stored into separate text file. Once perf command is finished
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these files are checked for values we expect for command.
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The attr tests consist of following parts:
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tests/attr.c
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------------
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This is the sys_perf_event_open hook implementation. The hook
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is triggered when the PERF_TEST_ATTR environment variable is
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defined. It must contain name of existing directory with access
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and write permissions.
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For each sys_perf_event_open call event details are stored in
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separate file. Besides 'struct perf_event_attr' values we also
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store 'fd' and 'group_fd' values to allow checking for groups.
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tests/attr.py
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-------------
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This is the python script that does all the hard work. It reads
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the test definition, executes it and checks results.
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tests/attr/
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-----------
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Directory containing all attr test definitions.
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Following tests are defined (with perf commands):
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perf record kill (test-record-basic)
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perf record -b kill (test-record-branch-any)
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perf record -j any kill (test-record-branch-filter-any)
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perf record -j any_call kill (test-record-branch-filter-any_call)
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perf record -j any_ret kill (test-record-branch-filter-any_ret)
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perf record -j hv kill (test-record-branch-filter-hv)
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perf record -j ind_call kill (test-record-branch-filter-ind_call)
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perf record -j k kill (test-record-branch-filter-k)
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perf record -j u kill (test-record-branch-filter-u)
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perf record -c 123 kill (test-record-count)
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perf record -d kill (test-record-data)
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perf record -F 100 kill (test-record-freq)
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perf record -g kill (test-record-graph-default)
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perf record --call-graph dwarf kill (test-record-graph-dwarf)
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perf record --call-graph fp kill (test-record-graph-fp)
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perf record --group -e cycles,instructions kill (test-record-group)
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perf record -e '{cycles,instructions}' kill (test-record-group1)
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perf record -D kill (test-record-no-delay)
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perf record -i kill (test-record-no-inherit)
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perf record -n kill (test-record-no-samples)
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perf record -c 100 -P kill (test-record-period)
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perf record -R kill (test-record-raw)
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perf stat -e cycles kill (test-stat-basic)
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perf stat kill (test-stat-default)
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perf stat -d kill (test-stat-detailed-1)
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perf stat -dd kill (test-stat-detailed-2)
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perf stat -ddd kill (test-stat-detailed-3)
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perf stat --group -e cycles,instructions kill (test-stat-group)
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perf stat -e '{cycles,instructions}' kill (test-stat-group1)
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perf stat -i -e cycles kill (test-stat-no-inherit)
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