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
60 lines
1.7 KiB
C
60 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2015, Wang Nan <wangnan0@huawei.com>
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* Copyright (C) 2015, Huawei Inc.
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*/
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#ifndef __LLVM_UTILS_H
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#define __LLVM_UTILS_H
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#include "debug.h"
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struct llvm_param {
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/* Path of clang executable */
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const char *clang_path;
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/*
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* Template of clang bpf compiling. 5 env variables
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* can be used:
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* $CLANG_EXEC: Path to clang.
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* $CLANG_OPTIONS: Extra options to clang.
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* $KERNEL_INC_OPTIONS: Kernel include directories.
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* $WORKING_DIR: Kernel source directory.
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* $CLANG_SOURCE: Source file to be compiled.
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*/
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const char *clang_bpf_cmd_template;
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/* Will be filled in $CLANG_OPTIONS */
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const char *clang_opt;
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/* Where to find kbuild system */
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const char *kbuild_dir;
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/*
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* Arguments passed to make, like 'ARCH=arm' if doing cross
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* compiling. Should not be used for dynamic compiling.
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*/
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const char *kbuild_opts;
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/*
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* Default is false. If set to true, write compiling result
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* to object file.
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*/
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bool dump_obj;
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/*
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* Default is false. If one of the above fields is set by user
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* explicitly then user_set_llvm is set to true. This is used
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* for perf test. If user doesn't set anything in .perfconfig
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* and clang is not found, don't trigger llvm test.
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*/
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bool user_set_param;
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};
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extern struct llvm_param llvm_param;
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int perf_llvm_config(const char *var, const char *value);
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int llvm__compile_bpf(const char *path, void **p_obj_buf, size_t *p_obj_buf_sz);
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/* This function is for test__llvm() use only */
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int llvm__search_clang(void);
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/* Following functions are reused by builtin clang support */
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void llvm__get_kbuild_opts(char **kbuild_dir, char **kbuild_include_opts);
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int llvm__get_nr_cpus(void);
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void llvm__dump_obj(const char *path, void *obj_buf, size_t size);
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#endif
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