From 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:44:59 +0000
Subject: [PATCH] gmac get mac form eeprom
---
kernel/include/linux/swap.h | 167 +++++++++++++++++++++++++++++++++++++------------------
1 files changed, 112 insertions(+), 55 deletions(-)
diff --git a/kernel/include/linux/swap.h b/kernel/include/linux/swap.h
index 8fba0d4..beda0a5 100644
--- a/kernel/include/linux/swap.h
+++ b/kernel/include/linux/swap.h
@@ -12,7 +12,6 @@
#include <linux/fs.h>
#include <linux/atomic.h>
#include <linux/page-flags.h>
-#include <linux/locallock.h>
#include <asm/page.h>
struct notifier_block;
@@ -149,7 +148,7 @@
* We always assume that blocks are of size PAGE_SIZE.
*/
struct swap_extent {
- struct list_head list;
+ struct rb_node rb_node;
pgoff_t start_page;
pgoff_t nr_pages;
sector_t start_block;
@@ -170,24 +169,31 @@
SWP_SOLIDSTATE = (1 << 4), /* blkdev seeks are cheap */
SWP_CONTINUED = (1 << 5), /* swap_map has count continuation */
SWP_BLKDEV = (1 << 6), /* its a block device */
- SWP_FILE = (1 << 7), /* set after swap_activate success */
- SWP_AREA_DISCARD = (1 << 8), /* single-time swap area discards */
- SWP_PAGE_DISCARD = (1 << 9), /* freed swap page-cluster discards */
- SWP_STABLE_WRITES = (1 << 10), /* no overwrite PG_writeback pages */
- SWP_SYNCHRONOUS_IO = (1 << 11), /* synchronous IO is efficient */
+ SWP_ACTIVATED = (1 << 7), /* set after swap_activate success */
+ SWP_FS_OPS = (1 << 8), /* swapfile operations go through fs */
+ SWP_AREA_DISCARD = (1 << 9), /* single-time swap area discards */
+ SWP_PAGE_DISCARD = (1 << 10), /* freed swap page-cluster discards */
+ SWP_STABLE_WRITES = (1 << 11), /* no overwrite PG_writeback pages */
+ SWP_SYNCHRONOUS_IO = (1 << 12), /* synchronous IO is efficient */
+ SWP_VALID = (1 << 13), /* swap is valid to be operated on? */
/* add others here before... */
- SWP_SCANNING = (1 << 12), /* refcount in scan_swap_map */
+ SWP_SCANNING = (1 << 14), /* refcount in scan_swap_map */
};
#define SWAP_CLUSTER_MAX 32UL
#define COMPACT_CLUSTER_MAX SWAP_CLUSTER_MAX
-#define SWAP_MAP_MAX 0x3e /* Max duplication count, in first swap_map */
-#define SWAP_MAP_BAD 0x3f /* Note pageblock is bad, in first swap_map */
+/* Bit flag in swap_map */
#define SWAP_HAS_CACHE 0x40 /* Flag page is cached, in first swap_map */
-#define SWAP_CONT_MAX 0x7f /* Max count, in each swap_map continuation */
-#define COUNT_CONTINUED 0x80 /* See swap_map continuation for full count */
-#define SWAP_MAP_SHMEM 0xbf /* Owned by shmem/tmpfs, in first swap_map */
+#define COUNT_CONTINUED 0x80 /* Flag swap_map continuation for full count */
+
+/* Special value in first swap_map */
+#define SWAP_MAP_MAX 0x3e /* Max count */
+#define SWAP_MAP_BAD 0x3f /* Note page is bad */
+#define SWAP_MAP_SHMEM 0xbf /* Owned by shmem/tmpfs */
+
+/* Special value in each swap_map continuation */
+#define SWAP_CONT_MAX 0x7f /* Max count */
/*
* We use this to track usage of a cluster. A cluster is a block of swap disk
@@ -246,9 +252,9 @@
unsigned int inuse_pages; /* number of those currently in use */
unsigned int cluster_next; /* likely index for next allocation */
unsigned int cluster_nr; /* countdown to next cluster search */
+ unsigned int __percpu *cluster_next_cpu; /*percpu index for next allocation */
struct percpu_cluster __percpu *percpu_cluster; /* per cpu's swap location */
- struct swap_extent *curr_swap_extent;
- struct swap_extent first_swap_extent;
+ struct rb_root swap_extent_root;/* root of the swap extent rbtree */
struct block_device *bdev; /* swap device or bdev of swap file */
struct file *swap_file; /* seldom referenced */
unsigned int old_block_size; /* seldom referenced */
@@ -275,9 +281,7 @@
*/
struct work_struct discard_work; /* discard worker */
struct swap_cluster_list discard_clusters; /* discard clusters list */
- unsigned int write_pending;
- unsigned int max_writes;
- struct plist_node avail_lists[0]; /*
+ struct plist_node avail_lists[]; /*
* entries in swap_avail_heads, one
* entry per node.
* Must be last as the number of the
@@ -309,51 +313,57 @@
};
/* linux/mm/workingset.c */
-void *workingset_eviction(struct address_space *mapping, struct page *page);
+void workingset_age_nonresident(struct lruvec *lruvec, unsigned long nr_pages);
+void *workingset_eviction(struct page *page, struct mem_cgroup *target_memcg);
void workingset_refault(struct page *page, void *shadow);
void workingset_activation(struct page *page);
-/* Do not use directly, use workingset_lookup_update */
-void workingset_update_node(struct radix_tree_node *node);
-
-/* Returns workingset_update_node() if the mapping has shadow entries. */
-#define workingset_lookup_update(mapping) \
-({ \
- radix_tree_update_node_t __helper = workingset_update_node; \
- if (dax_mapping(mapping) || shmem_mapping(mapping)) \
- __helper = NULL; \
- __helper; \
-})
+/* Only track the nodes of mappings with shadow entries */
+void workingset_update_node(struct xa_node *node);
+#define mapping_set_update(xas, mapping) do { \
+ if (!dax_mapping(mapping) && !shmem_mapping(mapping)) \
+ xas_set_update(xas, workingset_update_node); \
+} while (0)
/* linux/mm/page_alloc.c */
-extern unsigned long totalram_pages;
extern unsigned long totalreserve_pages;
extern unsigned long nr_free_buffer_pages(void);
-extern unsigned long nr_free_pagecache_pages(void);
/* Definition of global_zone_page_state not available yet */
#define nr_free_pages() global_zone_page_state(NR_FREE_PAGES)
/* linux/mm/swap.c */
-DECLARE_LOCAL_IRQ_LOCK(swapvec_lock);
+extern void lru_note_cost(struct lruvec *lruvec, bool file,
+ unsigned int nr_pages);
+extern void lru_note_cost_page(struct page *);
extern void lru_cache_add(struct page *);
-extern void lru_cache_add_anon(struct page *page);
-extern void lru_cache_add_file(struct page *page);
extern void lru_add_page_tail(struct page *page, struct page *page_tail,
struct lruvec *lruvec, struct list_head *head);
-extern void activate_page(struct page *);
extern void mark_page_accessed(struct page *);
+
+extern bool lru_cache_disabled(void);
+extern void lru_cache_disable(void);
+extern void lru_cache_enable(void);
extern void lru_add_drain(void);
extern void lru_add_drain_cpu(int cpu);
+extern void lru_add_drain_cpu_zone(struct zone *zone);
extern void lru_add_drain_all(void);
extern void rotate_reclaimable_page(struct page *page);
extern void deactivate_file_page(struct page *page);
+extern void deactivate_page(struct page *page);
extern void mark_page_lazyfree(struct page *page);
+extern void mark_page_lazyfree_movetail(struct page *page, bool tail);
extern void swap_setup(void);
-extern void lru_cache_add_active_or_unevictable(struct page *page,
- struct vm_area_struct *vma);
+extern void __lru_cache_add_inactive_or_unevictable(struct page *page,
+ unsigned long vma_flags);
+
+static inline void lru_cache_add_inactive_or_unevictable(struct page *page,
+ struct vm_area_struct *vma)
+{
+ return __lru_cache_add_inactive_or_unevictable(page, vma->vm_flags);
+}
/* linux/mm/vmscan.c */
extern unsigned long zone_reclaimable_pages(struct zone *zone);
@@ -371,8 +381,8 @@
extern unsigned long shrink_all_memory(unsigned long nr_pages);
extern int vm_swappiness;
extern int remove_mapping(struct address_space *mapping, struct page *page);
-extern unsigned long vm_total_pages;
+extern unsigned long reclaim_pages(struct list_head *page_list);
#ifdef CONFIG_NUMA
extern int node_reclaim_mode;
extern int sysctl_min_unmapped_ratio;
@@ -381,7 +391,6 @@
#define node_reclaim_mode 0
#endif
-extern int page_evictable(struct page *page);
extern void check_move_unevictable_pages(struct pagevec *pvec);
extern int kswapd_run(int nid);
@@ -415,15 +424,20 @@
extern unsigned long total_swapcache_pages(void);
extern void show_swap_cache_info(void);
extern int add_to_swap(struct page *page);
-extern int add_to_swap_cache(struct page *, swp_entry_t, gfp_t);
-extern int __add_to_swap_cache(struct page *page, swp_entry_t entry);
-extern void __delete_from_swap_cache(struct page *);
+extern void *get_shadow_from_swap_cache(swp_entry_t entry);
+extern int add_to_swap_cache(struct page *page, swp_entry_t entry,
+ gfp_t gfp, void **shadowp);
+extern void __delete_from_swap_cache(struct page *page,
+ swp_entry_t entry, void *shadow);
extern void delete_from_swap_cache(struct page *);
+extern void clear_shadow_from_swap_cache(int type, unsigned long begin,
+ unsigned long end);
extern void free_page_and_swap_cache(struct page *);
extern void free_pages_and_swap_cache(struct page **, int);
extern struct page *lookup_swap_cache(swp_entry_t entry,
struct vm_area_struct *vma,
unsigned long addr);
+struct page *find_get_incore_page(struct address_space *mapping, pgoff_t index);
extern struct page *read_swap_cache_async(swp_entry_t, gfp_t,
struct vm_area_struct *vma, unsigned long addr,
bool do_poll);
@@ -464,12 +478,13 @@
extern void swap_free(swp_entry_t);
extern void swapcache_free_entries(swp_entry_t *entries, int n);
extern int free_swap_and_cache(swp_entry_t);
-extern int swap_type_of(dev_t, sector_t, struct block_device **);
+int swap_type_of(dev_t device, sector_t offset);
+int find_first_swap(dev_t *device);
extern unsigned int count_swap_pages(int, int);
extern sector_t map_swap_page(struct page *, struct block_device **);
extern sector_t swapdev_block(int, pgoff_t);
extern int page_swapcount(struct page *);
-extern int __swap_count(struct swap_info_struct *si, swp_entry_t entry);
+extern int __swap_count(swp_entry_t entry);
extern int __swp_swapcount(swp_entry_t entry);
extern int swp_swapcount(swp_entry_t entry);
extern struct swap_info_struct *page_swap_info(struct page *);
@@ -479,6 +494,13 @@
struct backing_dev_info;
extern int init_swap_address_space(unsigned int type, unsigned long nr_pages);
extern void exit_swap_address_space(unsigned int type);
+extern struct swap_info_struct *get_swap_device(swp_entry_t entry);
+sector_t swap_page_sector(struct page *page);
+
+static inline void put_swap_device(struct swap_info_struct *si)
+{
+ rcu_read_unlock();
+}
#else /* CONFIG_SWAP */
@@ -560,22 +582,39 @@
return NULL;
}
+static inline
+struct page *find_get_incore_page(struct address_space *mapping, pgoff_t index)
+{
+ return find_get_page(mapping, index);
+}
+
static inline int add_to_swap(struct page *page)
{
return 0;
}
+static inline void *get_shadow_from_swap_cache(swp_entry_t entry)
+{
+ return NULL;
+}
+
static inline int add_to_swap_cache(struct page *page, swp_entry_t entry,
- gfp_t gfp_mask)
+ gfp_t gfp_mask, void **shadowp)
{
return -1;
}
-static inline void __delete_from_swap_cache(struct page *page)
+static inline void __delete_from_swap_cache(struct page *page,
+ swp_entry_t entry, void *shadow)
{
}
static inline void delete_from_swap_cache(struct page *page)
+{
+}
+
+static inline void clear_shadow_from_swap_cache(int type, unsigned long begin,
+ unsigned long end)
{
}
@@ -584,7 +623,7 @@
return 0;
}
-static inline int __swap_count(struct swap_info_struct *si, swp_entry_t entry)
+static inline int __swap_count(swp_entry_t entry)
{
return 0;
}
@@ -633,7 +672,7 @@
return vm_swappiness;
/* root ? */
- if (mem_cgroup_disabled() || !memcg->css.parent)
+ if (mem_cgroup_disabled() || mem_cgroup_is_root(memcg))
return vm_swappiness;
return memcg->swappiness;
@@ -646,19 +685,37 @@
#endif
#if defined(CONFIG_SWAP) && defined(CONFIG_MEMCG) && defined(CONFIG_BLK_CGROUP)
-extern void mem_cgroup_throttle_swaprate(struct mem_cgroup *memcg, int node,
- gfp_t gfp_mask);
+extern void __cgroup_throttle_swaprate(struct page *page, gfp_t gfp_mask);
+static inline void cgroup_throttle_swaprate(struct page *page, gfp_t gfp_mask)
+{
+ if (mem_cgroup_disabled())
+ return;
+ __cgroup_throttle_swaprate(page, gfp_mask);
+}
#else
-static inline void mem_cgroup_throttle_swaprate(struct mem_cgroup *memcg,
- int node, gfp_t gfp_mask)
+static inline void cgroup_throttle_swaprate(struct page *page, gfp_t gfp_mask)
{
}
#endif
#ifdef CONFIG_MEMCG_SWAP
extern void mem_cgroup_swapout(struct page *page, swp_entry_t entry);
-extern int mem_cgroup_try_charge_swap(struct page *page, swp_entry_t entry);
-extern void mem_cgroup_uncharge_swap(swp_entry_t entry, unsigned int nr_pages);
+extern int __mem_cgroup_try_charge_swap(struct page *page, swp_entry_t entry);
+static inline int mem_cgroup_try_charge_swap(struct page *page, swp_entry_t entry)
+{
+ if (mem_cgroup_disabled())
+ return 0;
+ return __mem_cgroup_try_charge_swap(page, entry);
+}
+
+extern void __mem_cgroup_uncharge_swap(swp_entry_t entry, unsigned int nr_pages);
+static inline void mem_cgroup_uncharge_swap(swp_entry_t entry, unsigned int nr_pages)
+{
+ if (mem_cgroup_disabled())
+ return;
+ __mem_cgroup_uncharge_swap(entry, nr_pages);
+}
+
extern long mem_cgroup_get_nr_swap_pages(struct mem_cgroup *memcg);
extern bool mem_cgroup_swap_full(struct page *page);
#else
--
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