de6cc6515a
Based on 1 normalized pattern(s): 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 or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 675 mass ave cambridge ma 02139 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 77 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Armijn Hemel <armijn@tjaldur.nl> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.837555891@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
51 lines
982 B
C
51 lines
982 B
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* SPU local store allocation routines
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*
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* Copyright 2007 Benjamin Herrenschmidt, IBM Corp.
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*/
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#undef DEBUG
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#include <linux/kernel.h>
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#include <linux/mm.h>
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#include <linux/slab.h>
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#include <linux/vmalloc.h>
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#include <asm/spu.h>
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#include <asm/spu_csa.h>
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#include <asm/mmu.h>
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#include "spufs.h"
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int spu_alloc_lscsa(struct spu_state *csa)
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{
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struct spu_lscsa *lscsa;
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unsigned char *p;
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lscsa = vzalloc(sizeof(*lscsa));
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if (!lscsa)
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return -ENOMEM;
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csa->lscsa = lscsa;
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/* Set LS pages reserved to allow for user-space mapping. */
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for (p = lscsa->ls; p < lscsa->ls + LS_SIZE; p += PAGE_SIZE)
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SetPageReserved(vmalloc_to_page(p));
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return 0;
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}
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void spu_free_lscsa(struct spu_state *csa)
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{
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/* Clear reserved bit before vfree. */
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unsigned char *p;
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if (csa->lscsa == NULL)
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return;
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for (p = csa->lscsa->ls; p < csa->lscsa->ls + LS_SIZE; p += PAGE_SIZE)
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ClearPageReserved(vmalloc_to_page(p));
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vfree(csa->lscsa);
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}
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