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.h | 31 +++++++++++++++++++++++++++++--
1 files changed, 29 insertions(+), 2 deletions(-)
diff --git a/kernel/mm/cma.h b/kernel/mm/cma.h
index e9e5924..bebb669 100644
--- a/kernel/mm/cma.h
+++ b/kernel/mm/cma.h
@@ -2,6 +2,15 @@
#ifndef __MM_CMA_H__
#define __MM_CMA_H__
+#include <linux/debugfs.h>
+#include <linux/kobject.h>
+#include <linux/android_vendor.h>
+
+struct cma_kobject {
+ struct kobject kobj;
+ struct cma *cma;
+};
+
struct cma {
unsigned long base_pfn;
unsigned long count;
@@ -11,9 +20,18 @@
#ifdef CONFIG_CMA_DEBUGFS
struct hlist_head mem_head;
spinlock_t mem_head_lock;
+ struct debugfs_u32_array dfs_bitmap;
#endif
- const char *name;
- bool inactive;
+ char name[CMA_MAX_NAME];
+#ifdef CONFIG_CMA_SYSFS
+ /* the number of CMA page successful allocations */
+ atomic64_t nr_pages_succeeded;
+ /* the number of CMA page allocation failures */
+ atomic64_t nr_pages_failed;
+ /* kobject requires dynamic object */
+ struct cma_kobject *cma_kobj;
+#endif
+ ANDROID_OEM_DATA_ARRAY(1, 4);
};
extern struct cma cma_areas[MAX_CMA_AREAS];
@@ -24,4 +42,13 @@
return cma->count >> cma->order_per_bit;
}
+#ifdef CONFIG_CMA_SYSFS
+void cma_sysfs_account_success_pages(struct cma *cma, unsigned long nr_pages);
+void cma_sysfs_account_fail_pages(struct cma *cma, unsigned long nr_pages);
+#else
+static inline void cma_sysfs_account_success_pages(struct cma *cma,
+ unsigned long nr_pages) {};
+static inline void cma_sysfs_account_fail_pages(struct cma *cma,
+ unsigned long nr_pages) {};
+#endif
#endif
--
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