Revision 30f92d62e5b41a94de2d0bbd677a6ea2fcfed74f authored by Akinobu Mita on 06 September 2017, 10:15:31 UTC, committed by Christoph Hellwig on 11 September 2017, 16:29:38 UTC
The initial chunk size for host memory buffer allocation is currently PAGE_SIZE << MAX_ORDER. MAX_ORDER order allocation is usually failed without CONFIG_DMA_CMA. So the HMB allocation is retried with chunk size PAGE_SIZE << (MAX_ORDER - 1) in general, but there is no problem if the retry allocation works correctly. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> [hch: rebased] Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Keith Busch <keith.busch@intel.com> Cc: stable@vger.kernel.org
1 parent 92dc689
irq_regs.c
/* saved per-CPU IRQ register pointer
*
* Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <linux/export.h>
#include <linux/percpu.h>
#include <asm/irq_regs.h>
#ifndef ARCH_HAS_OWN_IRQ_REGS
DEFINE_PER_CPU(struct pt_regs *, __irq_regs);
EXPORT_PER_CPU_SYMBOL(__irq_regs);
#endif
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