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
40 lines
730 B
C
40 lines
730 B
C
// SPDX-License-Identifier: GPL-2.0
|
|
#include <errno.h>
|
|
#include "perf_regs.h"
|
|
#include "event.h"
|
|
|
|
const struct sample_reg __weak sample_reg_masks[] = {
|
|
SMPL_REG_END
|
|
};
|
|
|
|
int __weak arch_sdt_arg_parse_op(char *old_op __maybe_unused,
|
|
char **new_op __maybe_unused)
|
|
{
|
|
return SDT_ARG_SKIP;
|
|
}
|
|
|
|
#ifdef HAVE_PERF_REGS_SUPPORT
|
|
int perf_reg_value(u64 *valp, struct regs_dump *regs, int id)
|
|
{
|
|
int i, idx = 0;
|
|
u64 mask = regs->mask;
|
|
|
|
if (regs->cache_mask & (1ULL << id))
|
|
goto out;
|
|
|
|
if (!(mask & (1ULL << id)))
|
|
return -EINVAL;
|
|
|
|
for (i = 0; i < id; i++) {
|
|
if (mask & (1ULL << i))
|
|
idx++;
|
|
}
|
|
|
|
regs->cache_mask |= (1ULL << id);
|
|
regs->cache_regs[id] = regs->regs[idx];
|
|
|
|
out:
|
|
*valp = regs->cache_regs[id];
|
|
return 0;
|
|
}
|
|
#endif
|