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
97 lines
2.4 KiB
C
97 lines
2.4 KiB
C
/*
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* Copyright 2016 Chandan Kumar, IBM Corporation.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <errno.h>
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#include <libunwind.h>
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#include <asm/perf_regs.h>
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#include "../../util/unwind.h"
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#include "../../util/debug.h"
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int libunwind__arch_reg_id(int regnum)
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{
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switch (regnum) {
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case UNW_PPC64_R0:
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return PERF_REG_POWERPC_R0;
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case UNW_PPC64_R1:
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return PERF_REG_POWERPC_R1;
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case UNW_PPC64_R2:
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return PERF_REG_POWERPC_R2;
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case UNW_PPC64_R3:
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return PERF_REG_POWERPC_R3;
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case UNW_PPC64_R4:
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return PERF_REG_POWERPC_R4;
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case UNW_PPC64_R5:
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return PERF_REG_POWERPC_R5;
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case UNW_PPC64_R6:
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return PERF_REG_POWERPC_R6;
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case UNW_PPC64_R7:
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return PERF_REG_POWERPC_R7;
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case UNW_PPC64_R8:
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return PERF_REG_POWERPC_R8;
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case UNW_PPC64_R9:
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return PERF_REG_POWERPC_R9;
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case UNW_PPC64_R10:
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return PERF_REG_POWERPC_R10;
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case UNW_PPC64_R11:
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return PERF_REG_POWERPC_R11;
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case UNW_PPC64_R12:
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return PERF_REG_POWERPC_R12;
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case UNW_PPC64_R13:
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return PERF_REG_POWERPC_R13;
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case UNW_PPC64_R14:
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return PERF_REG_POWERPC_R14;
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case UNW_PPC64_R15:
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return PERF_REG_POWERPC_R15;
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case UNW_PPC64_R16:
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return PERF_REG_POWERPC_R16;
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case UNW_PPC64_R17:
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return PERF_REG_POWERPC_R17;
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case UNW_PPC64_R18:
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return PERF_REG_POWERPC_R18;
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case UNW_PPC64_R19:
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return PERF_REG_POWERPC_R19;
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case UNW_PPC64_R20:
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return PERF_REG_POWERPC_R20;
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case UNW_PPC64_R21:
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return PERF_REG_POWERPC_R21;
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case UNW_PPC64_R22:
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return PERF_REG_POWERPC_R22;
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case UNW_PPC64_R23:
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return PERF_REG_POWERPC_R23;
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case UNW_PPC64_R24:
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return PERF_REG_POWERPC_R24;
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case UNW_PPC64_R25:
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return PERF_REG_POWERPC_R25;
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case UNW_PPC64_R26:
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return PERF_REG_POWERPC_R26;
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case UNW_PPC64_R27:
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return PERF_REG_POWERPC_R27;
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case UNW_PPC64_R28:
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return PERF_REG_POWERPC_R28;
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case UNW_PPC64_R29:
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return PERF_REG_POWERPC_R29;
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case UNW_PPC64_R30:
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return PERF_REG_POWERPC_R30;
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case UNW_PPC64_R31:
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return PERF_REG_POWERPC_R31;
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case UNW_PPC64_LR:
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return PERF_REG_POWERPC_LINK;
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case UNW_PPC64_CTR:
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return PERF_REG_POWERPC_CTR;
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case UNW_PPC64_XER:
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return PERF_REG_POWERPC_XER;
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case UNW_PPC64_NIP:
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return PERF_REG_POWERPC_NIP;
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default:
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pr_err("unwind: invalid reg id %d\n", regnum);
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return -EINVAL;
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}
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return -EINVAL;
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}
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