add boot partition size

hc

2023-12-11 d2ccde1c8e90d38cee87a1b0309ad2827f3fd30d

 kernel/kernel/trace/trace_stat.c
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@@ -9,7 +9,7 @@
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  *
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  */
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-
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+#include <linux/security.h>
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 #include <linux/list.h>
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 #include <linux/slab.h>
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 #include <linux/rbtree.h>
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@@ -72,9 +72,7 @@
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 	kfree(session);
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 }
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-typedef int (*cmp_stat_t)(void *, void *);
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-
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-static int insert_stat(struct rb_root *root, void *stat, cmp_stat_t cmp)
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+static int insert_stat(struct rb_root *root, void *stat, cmp_func_t cmp)
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 {
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 	struct rb_node **new = &(root->rb_node), *parent = NULL;
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 	struct stat_node *data;
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@@ -112,7 +110,7 @@
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  * This one will force an insertion as right-most node
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  * in the rbtree.
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  */
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-static int dummy_cmp(void *p1, void *p2)
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+static int dummy_cmp(const void *p1, const void *p2)
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 {
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 	return -1;
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 }
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@@ -238,6 +236,10 @@
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 	struct seq_file *m;
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 	struct stat_session *session = inode->i_private;
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+	ret = security_locked_down(LOCKDOWN_TRACEFS);
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+	if (ret)
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+		return ret;
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+
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 	ret = stat_seq_init(session);
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 	if (ret)
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 		return ret;
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@@ -274,13 +276,13 @@
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 static int tracing_stat_init(void)
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 {
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-	struct dentry *d_tracing;
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+	int ret;
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-	d_tracing = tracing_init_dentry();
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-	if (IS_ERR(d_tracing))
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+	ret = tracing_init_dentry();
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+	if (ret)
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 		return -ENODEV;
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-	stat_dir = tracefs_create_dir("trace_stat", d_tracing);
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+	stat_dir = tracefs_create_dir("trace_stat", NULL);
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 	if (!stat_dir) {
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 		pr_warn("Could not create tracefs 'trace_stat' entry\n");
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 		return -ENOMEM;