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RAS: Export helper to get ras_debugfs_dir 

Export a getter instead of the debugfs node directly so that, other
in-tree-only RAS modules can use it.

Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Link: https://lore.kernel.org/r/20240301143748.854090-2-yazen.ghannam@amd.com
This commit is contained in:
Borislav Petkov (AMD) 2024-03-01 08:37:46 -06:00
parent dd61b55d73
commit 9d2b6fa09d
3 changed files with 16 additions and 4 deletions
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10
drivers/ras/cec.c
View File

@ -480,9 +480,15 @@ DEFINE_SHOW_ATTRIBUTE(array);
static int __init create_debugfs_nodes(void)
{
struct dentry *d, *pfn, *decay, *count, *array;
struct dentry *d, *pfn, *decay, *count, *array, *dfs;
d = debugfs_create_dir("cec", ras_debugfs_dir);
dfs = ras_get_debugfs_root();
if (!dfs) {
pr_warn("Error getting RAS debugfs root!\n");
return -1;
}
d = debugfs_create_dir("cec", dfs);
if (!d) {
pr_warn("Error creating cec debugfs node!\n");
return -1;

8
drivers/ras/debugfs.c
View File

@ -3,10 +3,16 @@
#include <linux/ras.h>
#include "debugfs.h"
struct dentry *ras_debugfs_dir;
static struct dentry *ras_debugfs_dir;
static atomic_t trace_count = ATOMIC_INIT(0);
struct dentry *ras_get_debugfs_root(void)
{
return ras_debugfs_dir;
}
EXPORT_SYMBOL_GPL(ras_get_debugfs_root);
int ras_userspace_consumers(void)
{
return atomic_read(&trace_count);

2
drivers/ras/debugfs.h
View File

@ -4,6 +4,6 @@
#include <linux/debugfs.h>
extern struct dentry *ras_debugfs_dir;
struct dentry *ras_get_debugfs_root(void);
#endif /* __RAS_DEBUGFS_H__ */