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soc: rockchip: rk_dmabuf add 'peak' child node

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Add a child node 'peak' to stat the peak size for dmabuf.

Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
Change-Id: I6ee9e69f60e9c7660477dafb3d7f789677406abb
This commit is contained in:
Jianqun Xu
2022-05-05 10:00:10 +08:00
committed by Tao Huang
parent d870c5bea7
commit af77c1d2e1
1 changed files with 41 additions and 11 deletions
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52
drivers/soc/rockchip/rk_dmabuf_procfs.c
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@@ -97,13 +97,6 @@ static int rk_dmabuf_cb(const struct dma_buf *dmabuf, void *private)
return 0;
}
static int rk_dmabuf_cb2(const struct dma_buf *dmabuf, void *private)
{
*((unsigned long *)private) += dmabuf->size;
return 0;
}
static int rk_dmabuf_cb3(const struct dma_buf *dmabuf, void *private)
{
struct seq_file *s = private;
@@ -138,14 +131,50 @@ static int rk_dmabuf_dev_show(struct seq_file *s, void *v)
static int rk_dmabuf_size_show(struct seq_file *s, void *v)
{
unsigned long total_size = 0;
get_each_dmabuf(rk_dmabuf_cb2, &total_size);
seq_printf(s, "Total: %lu KiB\n", K(total_size));
seq_printf(s, "Total: %lu KiB\n", K(dma_buf_get_total_size()));
return 0;
}
static int rk_dmabuf_peak_show(struct seq_file *s, void *v)
{
seq_printf(s, "Peak: %lu MiB\n", K(K(dma_buf_get_peak_size())));
return 0;
}
static ssize_t rk_dmabuf_peak_write(struct file *file,
const char __user *buffer,
size_t count, loff_t *ppos)
{
char c;
int rc;
rc = get_user(c, buffer);
if (rc)
return rc;
if (c != '0')
return -EINVAL;
dma_buf_reset_peak_size();
return count;
}
static int rk_dmabuf_peak_open(struct inode *inode, struct file *file)
{
return single_open(file, rk_dmabuf_peak_show, NULL);
}
static const struct proc_ops rk_dmabuf_peak_ops = {
.proc_open = rk_dmabuf_peak_open,
.proc_read = seq_read,
.proc_lseek = seq_lseek,
.proc_release = single_release,
.proc_write = rk_dmabuf_peak_write,
};
static int __init rk_dmabuf_init(void)
{
struct platform_device *pdev;
@@ -163,6 +192,7 @@ static int __init rk_dmabuf_init(void)
proc_create_single("sgt", 0, root, rk_dmabuf_sgt_show);
proc_create_single("dev", 0, root, rk_dmabuf_dev_show);
proc_create_single("size", 0, root, rk_dmabuf_size_show);
proc_create("peak", 0644, root, &rk_dmabuf_peak_ops);
return 0;
}