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
63 lines
1.2 KiB
C++
63 lines
1.2 KiB
C++
// SPDX-License-Identifier: GPL-2.0
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#include "clang.h"
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#include "clang-c.h"
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#include "llvm/IR/Function.h"
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#include "llvm/IR/LLVMContext.h"
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#include <util-cxx.h>
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#include <tests/llvm.h>
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#include <string>
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class perf_clang_scope {
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public:
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explicit perf_clang_scope() {perf_clang__init();}
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~perf_clang_scope() {perf_clang__cleanup();}
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};
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static std::unique_ptr<llvm::Module>
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__test__clang_to_IR(void)
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{
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unsigned int kernel_version;
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if (fetch_kernel_version(&kernel_version, NULL, 0))
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return std::unique_ptr<llvm::Module>(nullptr);
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std::string cflag_kver("-DLINUX_VERSION_CODE=" +
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std::to_string(kernel_version));
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std::unique_ptr<llvm::Module> M =
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perf::getModuleFromSource({cflag_kver.c_str()},
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"perf-test.c",
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test_llvm__bpf_base_prog);
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return M;
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}
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extern "C" {
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int test__clang_to_IR(void)
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{
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perf_clang_scope _scope;
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auto M = __test__clang_to_IR();
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if (!M)
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return -1;
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for (llvm::Function& F : *M)
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if (F.getName() == "bpf_func__SyS_epoll_pwait")
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return 0;
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return -1;
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}
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int test__clang_to_obj(void)
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{
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perf_clang_scope _scope;
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auto M = __test__clang_to_IR();
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if (!M)
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return -1;
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auto Buffer = perf::getBPFObjectFromModule(&*M);
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if (!Buffer)
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return -1;
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return 0;
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}
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}
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