diff options
Diffstat (limited to 'drivers/char/ftape/zftape/zftape-buffers.c')
-rw-r--r-- | drivers/char/ftape/zftape/zftape-buffers.c | 149 |
1 files changed, 0 insertions, 149 deletions
diff --git a/drivers/char/ftape/zftape/zftape-buffers.c b/drivers/char/ftape/zftape/zftape-buffers.c deleted file mode 100644 index 7ebce2ec7897..000000000000 --- a/drivers/char/ftape/zftape/zftape-buffers.c +++ /dev/null @@ -1,149 +0,0 @@ -/* - * Copyright (C) 1995-1997 Claus-Justus Heine. - - 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; see the file COPYING. If not, write to - the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. - - * - * $Source: /homes/cvs/ftape-stacked/ftape/zftape/zftape-buffers.c,v $ - * $Revision: 1.2 $ - * $Date: 1997/10/05 19:18:59 $ - * - * This file contains the dynamic buffer allocation routines - * of zftape - */ - -#include <linux/errno.h> -#include <linux/mm.h> -#include <linux/slab.h> -#include <linux/delay.h> - -#include <linux/zftape.h> - -#include <linux/vmalloc.h> - -#include "../zftape/zftape-init.h" -#include "../zftape/zftape-eof.h" -#include "../zftape/zftape-ctl.h" -#include "../zftape/zftape-write.h" -#include "../zftape/zftape-read.h" -#include "../zftape/zftape-rw.h" -#include "../zftape/zftape-vtbl.h" - -/* global variables - */ - -/* local varibales - */ -static unsigned int used_memory; -static unsigned int peak_memory; - -void zft_memory_stats(void) -{ - TRACE_FUN(ft_t_flow); - - TRACE(ft_t_noise, "Memory usage (vmalloc allocations):\n" - KERN_INFO "total allocated: %d\n" - KERN_INFO "peak allocation: %d", - used_memory, peak_memory); - peak_memory = used_memory; - TRACE_EXIT; -} - -int zft_vcalloc_once(void *new, size_t size) -{ - TRACE_FUN(ft_t_flow); - if (zft_vmalloc_once(new, size) < 0) { - TRACE_EXIT -ENOMEM; - } - memset(*(void **)new, '\0', size); - TRACE_EXIT 0; -} -int zft_vmalloc_once(void *new, size_t size) -{ - TRACE_FUN(ft_t_flow); - - if (*(void **)new != NULL || size == 0) { - TRACE_EXIT 0; - } - if ((*(void **)new = vmalloc(size)) == NULL) { - TRACE_EXIT -ENOMEM; - } - used_memory += size; - if (peak_memory < used_memory) { - peak_memory = used_memory; - } - TRACE_ABORT(0, ft_t_noise, - "allocated buffer @ %p, %zd bytes", *(void **)new, size); -} -int zft_vmalloc_always(void *new, size_t size) -{ - TRACE_FUN(ft_t_flow); - - zft_vfree(new, size); - TRACE_EXIT zft_vmalloc_once(new, size); -} -void zft_vfree(void *old, size_t size) -{ - TRACE_FUN(ft_t_flow); - - if (*(void **)old) { - vfree(*(void **)old); - used_memory -= size; - TRACE(ft_t_noise, "released buffer @ %p, %zd bytes", - *(void **)old, size); - *(void **)old = NULL; - } - TRACE_EXIT; -} - -void *zft_kmalloc(size_t size) -{ - void *new; - - while ((new = kmalloc(size, GFP_KERNEL)) == NULL) { - msleep_interruptible(100); - } - memset(new, 0, size); - used_memory += size; - if (peak_memory < used_memory) { - peak_memory = used_memory; - } - return new; -} - -void zft_kfree(void *old, size_t size) -{ - kfree(old); - used_memory -= size; -} - -/* there are some more buffers that are allocated on demand. - * cleanup_module() calles this function to be sure to have released - * them - */ -void zft_uninit_mem(void) -{ - TRACE_FUN(ft_t_flow); - - zft_vfree(&zft_hseg_buf, FT_SEGMENT_SIZE); - zft_vfree(&zft_deblock_buf, FT_SEGMENT_SIZE); zft_deblock_segment = -1; - zft_free_vtbl(); - if (zft_cmpr_lock(0 /* don't load */) == 0) { - (*zft_cmpr_ops->cleanup)(); - (*zft_cmpr_ops->reset)(); /* unlock it again */ - } - zft_memory_stats(); - TRACE_EXIT; -} |