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-rw-r--r--include/linux/memblock.h48
1 files changed, 24 insertions, 24 deletions
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 34de69b3b8ba..7df557b16c1e 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -28,17 +28,26 @@ extern unsigned long long max_possible_pfn;
/**
* enum memblock_flags - definition of memory region attributes
* @MEMBLOCK_NONE: no special request
- * @MEMBLOCK_HOTPLUG: hotpluggable region
+ * @MEMBLOCK_HOTPLUG: memory region indicated in the firmware-provided memory
+ * map during early boot as hot(un)pluggable system RAM (e.g., memory range
+ * that might get hotunplugged later). With "movable_node" set on the kernel
+ * commandline, try keeping this memory region hotunpluggable. Does not apply
+ * to memblocks added ("hotplugged") after early boot.
* @MEMBLOCK_MIRROR: mirrored region
* @MEMBLOCK_NOMAP: don't add to kernel direct mapping and treat as
* reserved in the memory map; refer to memblock_mark_nomap() description
* for further details
+ * @MEMBLOCK_DRIVER_MANAGED: memory region that is always detected and added
+ * via a driver, and never indicated in the firmware-provided memory map as
+ * system RAM. This corresponds to IORESOURCE_SYSRAM_DRIVER_MANAGED in the
+ * kernel resource tree.
*/
enum memblock_flags {
MEMBLOCK_NONE = 0x0, /* No special request */
MEMBLOCK_HOTPLUG = 0x1, /* hotpluggable region */
MEMBLOCK_MIRROR = 0x2, /* mirrored region */
MEMBLOCK_NOMAP = 0x4, /* don't add to kernel direct mapping */
+ MEMBLOCK_DRIVER_MANAGED = 0x8, /* always detected via a driver */
};
/**
@@ -100,10 +109,11 @@ static inline void memblock_discard(void) {}
#endif
void memblock_allow_resize(void);
-int memblock_add_node(phys_addr_t base, phys_addr_t size, int nid);
+int memblock_add_node(phys_addr_t base, phys_addr_t size, int nid,
+ enum memblock_flags flags);
int memblock_add(phys_addr_t base, phys_addr_t size);
int memblock_remove(phys_addr_t base, phys_addr_t size);
-int memblock_free(phys_addr_t base, phys_addr_t size);
+int memblock_phys_free(phys_addr_t base, phys_addr_t size);
int memblock_reserve(phys_addr_t base, phys_addr_t size);
#ifdef CONFIG_HAVE_MEMBLOCK_PHYS_MAP
int memblock_physmem_add(phys_addr_t base, phys_addr_t size);
@@ -118,7 +128,7 @@ int memblock_mark_nomap(phys_addr_t base, phys_addr_t size);
int memblock_clear_nomap(phys_addr_t base, phys_addr_t size);
void memblock_free_all(void);
-void memblock_free_ptr(void *ptr, size_t size);
+void memblock_free(void *ptr, size_t size);
void reset_node_managed_pages(pg_data_t *pgdat);
void reset_all_zones_managed_pages(void);
@@ -133,7 +143,7 @@ void __next_mem_range_rev(u64 *idx, int nid, enum memblock_flags flags,
struct memblock_type *type_b, phys_addr_t *out_start,
phys_addr_t *out_end, int *out_nid);
-void __memblock_free_late(phys_addr_t base, phys_addr_t size);
+void memblock_free_late(phys_addr_t base, phys_addr_t size);
#ifdef CONFIG_HAVE_MEMBLOCK_PHYS_MAP
static inline void __next_physmem_range(u64 *idx, struct memblock_type *type,
@@ -208,7 +218,8 @@ static inline void __next_physmem_range(u64 *idx, struct memblock_type *type,
*/
#define for_each_mem_range(i, p_start, p_end) \
__for_each_mem_range(i, &memblock.memory, NULL, NUMA_NO_NODE, \
- MEMBLOCK_HOTPLUG, p_start, p_end, NULL)
+ MEMBLOCK_HOTPLUG | MEMBLOCK_DRIVER_MANAGED, \
+ p_start, p_end, NULL)
/**
* for_each_mem_range_rev - reverse iterate through memblock areas from
@@ -219,7 +230,8 @@ static inline void __next_physmem_range(u64 *idx, struct memblock_type *type,
*/
#define for_each_mem_range_rev(i, p_start, p_end) \
__for_each_mem_range_rev(i, &memblock.memory, NULL, NUMA_NO_NODE, \
- MEMBLOCK_HOTPLUG, p_start, p_end, NULL)
+ MEMBLOCK_HOTPLUG | MEMBLOCK_DRIVER_MANAGED,\
+ p_start, p_end, NULL)
/**
* for_each_reserved_mem_range - iterate over all reserved memblock areas
@@ -249,6 +261,11 @@ static inline bool memblock_is_nomap(struct memblock_region *m)
return m->flags & MEMBLOCK_NOMAP;
}
+static inline bool memblock_is_driver_managed(struct memblock_region *m)
+{
+ return m->flags & MEMBLOCK_DRIVER_MANAGED;
+}
+
int memblock_search_pfn_nid(unsigned long pfn, unsigned long *start_pfn,
unsigned long *end_pfn);
void __next_mem_pfn_range(int *idx, int nid, unsigned long *out_start_pfn,
@@ -441,23 +458,6 @@ static inline void *memblock_alloc_node(phys_addr_t size,
MEMBLOCK_ALLOC_ACCESSIBLE, nid);
}
-static inline void memblock_free_early(phys_addr_t base,
- phys_addr_t size)
-{
- memblock_free(base, size);
-}
-
-static inline void memblock_free_early_nid(phys_addr_t base,
- phys_addr_t size, int nid)
-{
- memblock_free(base, size);
-}
-
-static inline void memblock_free_late(phys_addr_t base, phys_addr_t size)
-{
- __memblock_free_late(base, size);
-}
-
/*
* Set the allocation direction to bottom-up or top-down.
*/