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 KiB
C
78 lines
2 KiB
C
/*
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* intel_pt_log.h: Intel Processor Trace support
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* Copyright (c) 2013-2014, Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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*/
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#ifndef INCLUDE__INTEL_PT_LOG_H__
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#define INCLUDE__INTEL_PT_LOG_H__
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#include <linux/compiler.h>
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#include <stdint.h>
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#include <inttypes.h>
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struct intel_pt_pkt;
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void intel_pt_log_enable(void);
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void intel_pt_log_disable(void);
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void intel_pt_log_set_name(const char *name);
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void __intel_pt_log_packet(const struct intel_pt_pkt *packet, int pkt_len,
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uint64_t pos, const unsigned char *buf);
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struct intel_pt_insn;
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void __intel_pt_log_insn(struct intel_pt_insn *intel_pt_insn, uint64_t ip);
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void __intel_pt_log_insn_no_data(struct intel_pt_insn *intel_pt_insn,
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uint64_t ip);
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void __intel_pt_log(const char *fmt, ...) __printf(1, 2);
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#define intel_pt_log(fmt, ...) \
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do { \
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if (intel_pt_enable_logging) \
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__intel_pt_log(fmt, ##__VA_ARGS__); \
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} while (0)
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#define intel_pt_log_packet(arg, ...) \
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do { \
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if (intel_pt_enable_logging) \
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__intel_pt_log_packet(arg, ##__VA_ARGS__); \
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} while (0)
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#define intel_pt_log_insn(arg, ...) \
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do { \
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if (intel_pt_enable_logging) \
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__intel_pt_log_insn(arg, ##__VA_ARGS__); \
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} while (0)
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#define intel_pt_log_insn_no_data(arg, ...) \
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do { \
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if (intel_pt_enable_logging) \
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__intel_pt_log_insn_no_data(arg, ##__VA_ARGS__); \
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} while (0)
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#define x64_fmt "0x%" PRIx64
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extern bool intel_pt_enable_logging;
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static inline void intel_pt_log_at(const char *msg, uint64_t u)
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{
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intel_pt_log("%s at " x64_fmt "\n", msg, u);
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}
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static inline void intel_pt_log_to(const char *msg, uint64_t u)
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{
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intel_pt_log("%s to " x64_fmt "\n", msg, u);
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}
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#endif
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