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
98 lines
5 KiB
JSON
98 lines
5 KiB
JSON
[
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{
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"CollectPEBSRecord": "1",
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"PublicDescription": "Counts cycles that fetch is stalled due to any reason. That is, the decoder queue is able to accept bytes, but the fetch unit is unable to provide bytes. This will include cycles due to an ITLB miss, ICache miss and other events.",
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"EventCode": "0x86",
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"Counter": "0,1,2,3",
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"UMask": "0x0",
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"PEBScounters": "0,1,2,3",
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"EventName": "FETCH_STALL.ALL",
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"PDIR_COUNTER": "na",
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"SampleAfterValue": "200003",
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"BriefDescription": "Cycles code-fetch stalled due to any reason."
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},
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{
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"CollectPEBSRecord": "1",
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"PublicDescription": "Counts cycles that fetch is stalled due to an outstanding ITLB miss. That is, the decoder queue is able to accept bytes, but the fetch unit is unable to provide bytes due to an ITLB miss. Note: this event is not the same as page walk cycles to retrieve an instruction translation.",
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"EventCode": "0x86",
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"Counter": "0,1,2,3",
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"UMask": "0x1",
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"PEBScounters": "0,1,2,3",
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"EventName": "FETCH_STALL.ITLB_FILL_PENDING_CYCLES",
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"PDIR_COUNTER": "na",
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"SampleAfterValue": "200003",
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"BriefDescription": "Cycles the code-fetch stalls and an ITLB miss is outstanding."
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},
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{
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"CollectPEBSRecord": "1",
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"PublicDescription": "Counts the number of issue slots per core cycle that were not consumed by the backend due to either a full resource in the backend (RESOURCE_FULL) or due to the processor recovering from some event (RECOVERY).",
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"EventCode": "0xCA",
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"Counter": "0,1,2,3",
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"UMask": "0x0",
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"PEBScounters": "0,1,2,3",
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"EventName": "ISSUE_SLOTS_NOT_CONSUMED.ANY",
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"PDIR_COUNTER": "na",
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"SampleAfterValue": "200003",
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"BriefDescription": "Unfilled issue slots per cycle"
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},
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{
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"CollectPEBSRecord": "1",
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"PublicDescription": "Counts the number of issue slots per core cycle that were not consumed because of a full resource in the backend. Including but not limited to resources such as the Re-order Buffer (ROB), reservation stations (RS), load/store buffers, physical registers, or any other needed machine resource that is currently unavailable. Note that uops must be available for consumption in order for this event to fire. If a uop is not available (Instruction Queue is empty), this event will not count.",
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"EventCode": "0xCA",
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"Counter": "0,1,2,3",
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"UMask": "0x1",
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"PEBScounters": "0,1,2,3",
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"EventName": "ISSUE_SLOTS_NOT_CONSUMED.RESOURCE_FULL",
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"PDIR_COUNTER": "na",
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"SampleAfterValue": "200003",
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"BriefDescription": "Unfilled issue slots per cycle because of a full resource in the backend"
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},
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{
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"CollectPEBSRecord": "1",
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"PublicDescription": "Counts the number of issue slots per core cycle that were not consumed by the backend because allocation is stalled waiting for a mispredicted jump to retire or other branch-like conditions (e.g. the event is relevant during certain microcode flows). Counts all issue slots blocked while within this window including slots where uops were not available in the Instruction Queue.",
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"EventCode": "0xCA",
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"Counter": "0,1,2,3",
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"UMask": "0x2",
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"PEBScounters": "0,1,2,3",
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"EventName": "ISSUE_SLOTS_NOT_CONSUMED.RECOVERY",
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"PDIR_COUNTER": "na",
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"SampleAfterValue": "200003",
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"BriefDescription": "Unfilled issue slots per cycle to recover"
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},
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{
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"CollectPEBSRecord": "2",
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"PublicDescription": "Counts hardware interrupts received by the processor.",
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"EventCode": "0xCB",
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"Counter": "0,1,2,3",
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"UMask": "0x1",
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"PEBScounters": "0,1,2,3",
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"EventName": "HW_INTERRUPTS.RECEIVED",
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"PDIR_COUNTER": "na",
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"SampleAfterValue": "203",
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"BriefDescription": "Hardware interrupts received"
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},
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{
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"CollectPEBSRecord": "2",
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"PublicDescription": "Counts the number of core cycles during which interrupts are masked (disabled). Increments by 1 each core cycle that EFLAGS.IF is 0, regardless of whether interrupts are pending or not.",
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"EventCode": "0xCB",
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"Counter": "0,1,2,3",
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"UMask": "0x2",
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"PEBScounters": "0,1,2,3",
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"EventName": "HW_INTERRUPTS.MASKED",
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"PDIR_COUNTER": "na",
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"SampleAfterValue": "200003",
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"BriefDescription": "Cycles hardware interrupts are masked"
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},
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{
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"CollectPEBSRecord": "2",
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"PublicDescription": "Counts core cycles during which there are pending interrupts, but interrupts are masked (EFLAGS.IF = 0).",
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"EventCode": "0xCB",
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"Counter": "0,1,2,3",
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"UMask": "0x4",
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"PEBScounters": "0,1,2,3",
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"EventName": "HW_INTERRUPTS.PENDING_AND_MASKED",
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"PDIR_COUNTER": "na",
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"SampleAfterValue": "200003",
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"BriefDescription": "Cycles pending interrupts are masked"
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}
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] |