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Revert "dma-buf: dump each dmabuf info"

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This reverts commit dde8daabfc.

Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
Change-Id: I79a01a5f7eddb204cbef97d5b300d7ecf49342d7
This commit is contained in:
Jianqun Xu
2022-04-06 17:22:55 +08:00
committed by Tao Huang
parent d700c5c3f9
commit e09f0c4d0c
3 changed files with 0 additions and 109 deletions
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11
drivers/dma-buf/Kconfig
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@@ -9,17 +9,6 @@ config DMABUF_CACHE
This option support to store attachments in a list and destroy them by
set to a callback list in the dtor of dma-buf.
config DMABUF_PROCFS
tristate "DMABUF procfs support"
depends on DMA_SHARED_BUFFER
depends on PROC_FS
depends on NO_GKI
help
Turns on this to create a procfs debug interface for dma-buf, support
get information from db_list by get_each_dmabuf.
If unsure, say "N".
config SYNC_FILE
bool "Explicit Synchronization Framework"
default n

1
drivers/dma-buf/Makefile
View File

@@ -10,7 +10,6 @@ obj-$(CONFIG_SW_SYNC_DEBUG) += sync_debug.o
obj-$(CONFIG_UDMABUF) += udmabuf.o
obj-$(CONFIG_DMABUF_SYSFS_STATS) += dma-buf-sysfs-stats.o
obj-$(CONFIG_DMABUF_HEAPS_ROCKCHIP) += rk_heaps/
obj-$(CONFIG_DMABUF_PROCFS) += dmabuf_procfs.o
dmabuf_selftests-y := \
selftest.o \

97
drivers/dma-buf/dmabuf_procfs.c
View File

@@ -1,97 +0,0 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2022 Rockchip Electronics Co. Ltd.
*/
#include <linux/dma-buf.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/proc_fs.h>
#include <linux/scatterlist.h>
#include <linux/seq_file.h>
#include <linux/slab.h>
#define K(size) ((unsigned long)((size) >> 10))
static struct device *dmabuf_dev;
static void rk_dmabuf_dump_sgt(struct dma_buf *dmabuf, void *priv)
{
struct seq_file *s = priv;
struct scatterlist *sg;
struct dma_buf_attachment *a;
phys_addr_t end;
int i;
list_for_each_entry(a, &dmabuf->attachments, node) {
if (!a->sgt)
continue;
for_each_sgtable_sg(a->sgt, sg, i) {
end = sg->dma_address + sg->length - 1;
seq_printf(s, "%4d: ", i);
seq_printf(s, "%pa..%pa\t", &sg->dma_address, &end);
}
break;
}
}
static int rk_dmabuf_cb(const struct dma_buf *dmabuf, void *private)
{
struct seq_file *s = private;
struct sg_table *sgt;
struct dma_buf_attachment *a;
struct dma_buf *db = (struct dma_buf *)dmabuf;
bool need_map = list_empty(&db->attachments);
seq_printf(s, "%s\t%32s %10lu KiB", db->name, db->exp_name, K(db->size));
if (need_map) {
a = dma_buf_attach(db, dmabuf_dev);
if (IS_ERR_OR_NULL(a))
return PTR_ERR(a);
sgt = dma_buf_map_attachment(a, 0);
if (IS_ERR_OR_NULL(sgt))
return PTR_ERR(sgt);
}
rk_dmabuf_dump_sgt(db, s);
if (need_map) {
dma_buf_unmap_attachment(a, sgt, 0);
dma_buf_detach(db, a);
}
seq_puts(s, "\n");
return 0;
}
static int rk_dmabuf_show(struct seq_file *s, void *v)
{
seq_printf(s, "%s\t%32s %14s %8s\n\n", "NAME", "EXPORT", "SIZE:KiB", "SGLIST");
return get_each_dmabuf(rk_dmabuf_cb, s);
}
static int __init rk_dmabuf_init(void)
{
struct platform_device *pdev;
struct platform_device_info dev_info = {
.name = "dmabuf",
.id = PLATFORM_DEVID_AUTO,
.dma_mask = DMA_BIT_MASK(32),
};
pdev = platform_device_register_full(&dev_info);
dmabuf_dev = pdev ? &pdev->dev : NULL;
proc_create_single("rk_dmabuf", 0, NULL, rk_dmabuf_show);
return 0;
}
late_initcall_sync(rk_dmabuf_init);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Jianqun Xu <jay.xu@rock-chips.com>");
MODULE_DESCRIPTION("ROCKCHIP DMABUF Driver");
MODULE_ALIAS("platform:rk-dmabuf");