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
69 lines
3.2 KiB
JSON
69 lines
3.2 KiB
JSON
[
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{
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"PEBS": "1",
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"PublicDescription": "This event counts the number of load ops retired that had DTLB miss.",
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"EventCode": "0x04",
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"Counter": "0,1",
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"UMask": "0x8",
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"EventName": "MEM_UOPS_RETIRED.DTLB_MISS_LOADS",
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"SampleAfterValue": "200003",
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"BriefDescription": "Loads missed DTLB"
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},
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{
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"PublicDescription": "This event counts when a data (D) page walk is completed or started. Since a page walk implies a TLB miss, the number of TLB misses can be counted by counting the number of pagewalks.",
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"EventCode": "0x05",
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"Counter": "0,1",
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"UMask": "0x1",
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"EventName": "PAGE_WALKS.D_SIDE_WALKS",
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"SampleAfterValue": "100003",
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"BriefDescription": "D-side page-walks",
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"EdgeDetect": "1"
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},
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{
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"PublicDescription": "This event counts every cycle when a D-side (walks due to a load) page walk is in progress. Page walk duration divided by number of page walks is the average duration of page-walks.",
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"EventCode": "0x05",
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"Counter": "0,1",
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"UMask": "0x1",
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"EventName": "PAGE_WALKS.D_SIDE_CYCLES",
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"SampleAfterValue": "200003",
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"BriefDescription": "Duration of D-side page-walks in core cycles"
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},
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{
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"PublicDescription": "This event counts when an instruction (I) page walk is completed or started. Since a page walk implies a TLB miss, the number of TLB misses can be counted by counting the number of pagewalks.",
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"EventCode": "0x05",
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"Counter": "0,1",
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"UMask": "0x2",
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"EventName": "PAGE_WALKS.I_SIDE_WALKS",
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"SampleAfterValue": "100003",
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"BriefDescription": "I-side page-walks",
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"EdgeDetect": "1"
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},
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{
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"PublicDescription": "This event counts every cycle when a I-side (walks due to an instruction fetch) page walk is in progress. Page walk duration divided by number of page walks is the average duration of page-walks.",
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"EventCode": "0x05",
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"Counter": "0,1",
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"UMask": "0x2",
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"EventName": "PAGE_WALKS.I_SIDE_CYCLES",
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"SampleAfterValue": "200003",
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"BriefDescription": "Duration of I-side page-walks in core cycles"
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},
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{
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"PublicDescription": "This event counts when a data (D) page walk or an instruction (I) page walk is completed or started. Since a page walk implies a TLB miss, the number of TLB misses can be counted by counting the number of pagewalks.",
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"EventCode": "0x05",
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"Counter": "0,1",
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"UMask": "0x3",
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"EventName": "PAGE_WALKS.WALKS",
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"SampleAfterValue": "100003",
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"BriefDescription": "Total page walks that are completed (I-side and D-side)",
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"EdgeDetect": "1"
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},
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{
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"PublicDescription": "This event counts every cycle when a data (D) page walk or instruction (I) page walk is in progress. Since a pagewalk implies a TLB miss, the approximate cost of a TLB miss can be determined from this event.",
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"EventCode": "0x05",
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"Counter": "0,1",
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"UMask": "0x3",
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"EventName": "PAGE_WALKS.CYCLES",
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"SampleAfterValue": "200003",
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"BriefDescription": "Total cycles for all the page walks. (I-side and D-side)"
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}
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] |