forked from luck/tmp_suning_uos_patched
399d792129
The might_sleep() annotations in mthca are silly -- they all occur shortly before calls that will end up in core functions like kmalloc() that will print the same warning in an unsafe context anyway. In fact, beyond cluttering the source, we're actually bloating text with CONFIG_DEBUG_SPINLOCK_SLEEP and/or CONFIG_PREEMPT_VOLUNTARY set. With both options set, getting rid of the might_sleep()s saves a lot: add/remove: 0/0 grow/shrink: 0/7 up/down: 0/-171 (-171) function old new delta mthca_pd_alloc 132 109 -23 mthca_init_cq 969 946 -23 mthca_mr_alloc 592 568 -24 mthca_pd_free 67 42 -25 mthca_free_mr 219 194 -25 mthca_free_cq 570 545 -25 mthca_fmr_alloc 742 716 -26 Signed-off-by: Roland Dreier <rolandd@cisco.com>
85 lines
2.6 KiB
C
85 lines
2.6 KiB
C
/*
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* Copyright (c) 2004 Topspin Communications. All rights reserved.
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* Copyright (c) 2005 Cisco Systems. All rights reserved.
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* Copyright (c) 2005 Mellanox Technologies. 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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* $Id: mthca_pd.c 1349 2004-12-16 21:09:43Z roland $
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*/
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#include <linux/init.h>
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#include <linux/errno.h>
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#include "mthca_dev.h"
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int mthca_pd_alloc(struct mthca_dev *dev, int privileged, struct mthca_pd *pd)
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{
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int err = 0;
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pd->privileged = privileged;
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atomic_set(&pd->sqp_count, 0);
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pd->pd_num = mthca_alloc(&dev->pd_table.alloc);
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if (pd->pd_num == -1)
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return -ENOMEM;
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if (privileged) {
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err = mthca_mr_alloc_notrans(dev, pd->pd_num,
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MTHCA_MPT_FLAG_LOCAL_READ |
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MTHCA_MPT_FLAG_LOCAL_WRITE,
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&pd->ntmr);
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if (err)
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mthca_free(&dev->pd_table.alloc, pd->pd_num);
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}
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return err;
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}
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void mthca_pd_free(struct mthca_dev *dev, struct mthca_pd *pd)
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{
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if (pd->privileged)
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mthca_free_mr(dev, &pd->ntmr);
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mthca_free(&dev->pd_table.alloc, pd->pd_num);
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}
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int __devinit mthca_init_pd_table(struct mthca_dev *dev)
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{
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return mthca_alloc_init(&dev->pd_table.alloc,
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dev->limits.num_pds,
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(1 << 24) - 1,
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dev->limits.reserved_pds);
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}
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void __devexit mthca_cleanup_pd_table(struct mthca_dev *dev)
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{
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/* XXX check if any PDs are still allocated? */
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mthca_alloc_cleanup(&dev->pd_table.alloc);
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}
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