From 102a0743326a03cd1a1202ceda21e175b7d3575c Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 20 Feb 2024 01:20:52 +0000
Subject: [PATCH] add new system file
---
kernel/mm/cma_debug.c | 30 ++++++++++++++----------------
1 files changed, 14 insertions(+), 16 deletions(-)
diff --git a/kernel/mm/cma_debug.c b/kernel/mm/cma_debug.c
index aba5c06..00170c4 100644
--- a/kernel/mm/cma_debug.c
+++ b/kernel/mm/cma_debug.c
@@ -21,8 +21,6 @@
unsigned long n;
};
-static struct dentry *cma_debugfs_root;
-
static int cma_debugfs_get(void *data, u64 *val)
{
unsigned long *p = data;
@@ -31,7 +29,7 @@
return 0;
}
-DEFINE_SIMPLE_ATTRIBUTE(cma_debugfs_fops, cma_debugfs_get, NULL, "%llu\n");
+DEFINE_DEBUGFS_ATTRIBUTE(cma_debugfs_fops, cma_debugfs_get, NULL, "%llu\n");
static int cma_used_get(void *data, u64 *val)
{
@@ -46,7 +44,7 @@
return 0;
}
-DEFINE_SIMPLE_ATTRIBUTE(cma_used_fops, cma_used_get, NULL, "%llu\n");
+DEFINE_DEBUGFS_ATTRIBUTE(cma_used_fops, cma_used_get, NULL, "%llu\n");
static int cma_maxchunk_get(void *data, u64 *val)
{
@@ -68,7 +66,7 @@
return 0;
}
-DEFINE_SIMPLE_ATTRIBUTE(cma_maxchunk_fops, cma_maxchunk_get, NULL, "%llu\n");
+DEFINE_DEBUGFS_ATTRIBUTE(cma_maxchunk_fops, cma_maxchunk_get, NULL, "%llu\n");
static void cma_add_to_cma_mem_list(struct cma *cma, struct cma_mem *mem)
{
@@ -128,7 +126,7 @@
return cma_free_mem(cma, pages);
}
-DEFINE_SIMPLE_ATTRIBUTE(cma_free_fops, NULL, cma_free_write, "%llu\n");
+DEFINE_DEBUGFS_ATTRIBUTE(cma_free_fops, NULL, cma_free_write, "%llu\n");
static int cma_alloc_mem(struct cma *cma, int count)
{
@@ -139,7 +137,7 @@
if (!mem)
return -ENOMEM;
- p = cma_alloc(cma, count, 0, false);
+ p = cma_alloc(cma, count, 0, GFP_KERNEL);
if (!p) {
kfree(mem);
return -ENOMEM;
@@ -160,17 +158,16 @@
return cma_alloc_mem(cma, pages);
}
-DEFINE_SIMPLE_ATTRIBUTE(cma_alloc_fops, NULL, cma_alloc_write, "%llu\n");
+DEFINE_DEBUGFS_ATTRIBUTE(cma_alloc_fops, NULL, cma_alloc_write, "%llu\n");
-static void cma_debugfs_add_one(struct cma *cma, int idx)
+static void cma_debugfs_add_one(struct cma *cma, struct dentry *root_dentry)
{
struct dentry *tmp;
char name[16];
- int u32s;
scnprintf(name, sizeof(name), "cma-%s", cma->name);
- tmp = debugfs_create_dir(name, cma_debugfs_root);
+ tmp = debugfs_create_dir(name, root_dentry);
debugfs_create_file("alloc", 0200, tmp, cma, &cma_alloc_fops);
debugfs_create_file("free", 0200, tmp, cma, &cma_free_fops);
@@ -182,20 +179,21 @@
debugfs_create_file("used", 0444, tmp, cma, &cma_used_fops);
debugfs_create_file("maxchunk", 0444, tmp, cma, &cma_maxchunk_fops);
- u32s = DIV_ROUND_UP(cma_bitmap_maxno(cma), BITS_PER_BYTE * sizeof(u32));
- debugfs_create_u32_array_hex("bitmap", 0444, tmp, (u32 *)cma->bitmap, u32s);
+ cma->dfs_bitmap.array = (u32 *)cma->bitmap;
+ cma->dfs_bitmap.n_elements = DIV_ROUND_UP(cma_bitmap_maxno(cma),
+ BITS_PER_BYTE * sizeof(u32));
+ debugfs_create_u32_array("bitmap", 0444, tmp, &cma->dfs_bitmap);
}
static int __init cma_debugfs_init(void)
{
+ struct dentry *cma_debugfs_root;
int i;
cma_debugfs_root = debugfs_create_dir("cma", NULL);
- if (!cma_debugfs_root)
- return -ENOMEM;
for (i = 0; i < cma_area_count; i++)
- cma_debugfs_add_one(&cma_areas[i], i);
+ cma_debugfs_add_one(&cma_areas[i], cma_debugfs_root);
return 0;
}
--
Gitblit v1.6.2