752ade68cb
There are many code paths opencoding kvmalloc. Let's use the helper instead. The main difference to kvmalloc is that those users are usually not considering all the aspects of the memory allocator. E.g. allocation requests <= 32kB (with 4kB pages) are basically never failing and invoke OOM killer to satisfy the allocation. This sounds too disruptive for something that has a reasonable fallback - the vmalloc. On the other hand those requests might fallback to vmalloc even when the memory allocator would succeed after several more reclaim/compaction attempts previously. There is no guarantee something like that happens though. This patch converts many of those places to kv[mz]alloc* helpers because they are more conservative. Link: http://lkml.kernel.org/r/20170306103327.2766-2-mhocko@kernel.org Signed-off-by: Michal Hocko <mhocko@suse.com> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> # Xen bits Acked-by: Kees Cook <keescook@chromium.org> Acked-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Andreas Dilger <andreas.dilger@intel.com> # Lustre Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> # KVM/s390 Acked-by: Dan Williams <dan.j.williams@intel.com> # nvdim Acked-by: David Sterba <dsterba@suse.com> # btrfs Acked-by: Ilya Dryomov <idryomov@gmail.com> # Ceph Acked-by: Tariq Toukan <tariqt@mellanox.com> # mlx4 Acked-by: Leon Romanovsky <leonro@mellanox.com> # mlx5 Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Anton Vorontsov <anton@enomsg.org> Cc: Colin Cross <ccross@android.com> Cc: Tony Luck <tony.luck@intel.com> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Ben Skeggs <bskeggs@redhat.com> Cc: Kent Overstreet <kent.overstreet@gmail.com> Cc: Santosh Raspatur <santosh@chelsio.com> Cc: Hariprasad S <hariprasad@chelsio.com> Cc: Yishai Hadas <yishaih@mellanox.com> Cc: Oleg Drokin <oleg.drokin@intel.com> Cc: "Yan, Zheng" <zyan@redhat.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: David Miller <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
112 lines
3.2 KiB
C
112 lines
3.2 KiB
C
/*
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* Copyright (c) 2006-2008 Chelsio, Inc. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef _CHELSIO_DEFS_H
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#define _CHELSIO_DEFS_H
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#include <linux/skbuff.h>
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#include <net/tcp.h>
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#include "t3cdev.h"
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#include "cxgb3_offload.h"
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#define VALIDATE_TID 1
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/*
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* Map an ATID or STID to their entries in the corresponding TID tables.
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*/
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static inline union active_open_entry *atid2entry(const struct tid_info *t,
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unsigned int atid)
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{
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return &t->atid_tab[atid - t->atid_base];
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}
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static inline union listen_entry *stid2entry(const struct tid_info *t,
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unsigned int stid)
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{
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return &t->stid_tab[stid - t->stid_base];
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}
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/*
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* Find the connection corresponding to a TID.
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*/
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static inline struct t3c_tid_entry *lookup_tid(const struct tid_info *t,
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unsigned int tid)
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{
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struct t3c_tid_entry *t3c_tid = tid < t->ntids ?
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&(t->tid_tab[tid]) : NULL;
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return (t3c_tid && t3c_tid->client) ? t3c_tid : NULL;
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}
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/*
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* Find the connection corresponding to a server TID.
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*/
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static inline struct t3c_tid_entry *lookup_stid(const struct tid_info *t,
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unsigned int tid)
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{
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union listen_entry *e;
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if (tid < t->stid_base || tid >= t->stid_base + t->nstids)
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return NULL;
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e = stid2entry(t, tid);
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if ((void *)e->next >= (void *)t->tid_tab &&
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(void *)e->next < (void *)&t->atid_tab[t->natids])
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return NULL;
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return &e->t3c_tid;
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}
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/*
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* Find the connection corresponding to an active-open TID.
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*/
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static inline struct t3c_tid_entry *lookup_atid(const struct tid_info *t,
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unsigned int tid)
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{
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union active_open_entry *e;
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if (tid < t->atid_base || tid >= t->atid_base + t->natids)
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return NULL;
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e = atid2entry(t, tid);
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if ((void *)e->next >= (void *)t->tid_tab &&
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(void *)e->next < (void *)&t->atid_tab[t->natids])
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return NULL;
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return &e->t3c_tid;
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}
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int attach_t3cdev(struct t3cdev *dev);
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void detach_t3cdev(struct t3cdev *dev);
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#endif
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