diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-05-05 13:50:15 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-05-05 13:50:15 -0700 |
| commit | 8404c9fbc84b741f66cff7d4934a25dd2c344452 (patch) | |
| tree | ad9b31db8b954b89a0984760a57aec7526caa1b5 /mm/cma.h | |
| parent | a79cdfba68a13b731004f0aafe1155a83830d472 (diff) | |
| parent | 36f0b35d0894576fe63268ede80d9f5aa140be09 (diff) | |
Merge branch 'akpm' (patches from Andrew)
Merge more updates from Andrew Morton:
"The remainder of the main mm/ queue.
143 patches.
Subsystems affected by this patch series (all mm): pagecache, hugetlb,
userfaultfd, vmscan, compaction, migration, cma, ksm, vmstat, mmap,
kconfig, util, memory-hotplug, zswap, zsmalloc, highmem, cleanups, and
kfence"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (143 commits)
kfence: use power-efficient work queue to run delayed work
kfence: maximize allocation wait timeout duration
kfence: await for allocation using wait_event
kfence: zero guard page after out-of-bounds access
mm/process_vm_access.c: remove duplicate include
mm/mempool: minor coding style tweaks
mm/highmem.c: fix coding style issue
btrfs: use memzero_page() instead of open coded kmap pattern
iov_iter: lift memzero_page() to highmem.h
mm/zsmalloc: use BUG_ON instead of if condition followed by BUG.
mm/zswap.c: switch from strlcpy to strscpy
arm64/Kconfig: introduce ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE
x86/Kconfig: introduce ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE
mm,memory_hotplug: add kernel boot option to enable memmap_on_memory
acpi,memhotplug: enable MHP_MEMMAP_ON_MEMORY when supported
mm,memory_hotplug: allocate memmap from the added memory range
mm,memory_hotplug: factor out adjusting present pages into adjust_present_page_count()
mm,memory_hotplug: relax fully spanned sections check
drivers/base/memory: introduce memory_block_{online,offline}
mm/memory_hotplug: remove broken locking of zone PCP structures during hot remove
...
Diffstat (limited to 'mm/cma.h')
| -rw-r--r-- | mm/cma.h | 25 |
1 files changed, 24 insertions, 1 deletions
@@ -3,19 +3,33 @@ #define __MM_CMA_H__ #include <linux/debugfs.h> +#include <linux/kobject.h> + +struct cma_kobject { + struct kobject kobj; + struct cma *cma; +}; struct cma { unsigned long base_pfn; unsigned long count; unsigned long *bitmap; unsigned int order_per_bit; /* Order of pages represented by one bit */ - struct mutex lock; + spinlock_t lock; #ifdef CONFIG_CMA_DEBUGFS struct hlist_head mem_head; spinlock_t mem_head_lock; struct debugfs_u32_array dfs_bitmap; #endif 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 }; extern struct cma cma_areas[MAX_CMA_AREAS]; @@ -26,4 +40,13 @@ static inline unsigned long cma_bitmap_maxno(struct cma *cma) 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 |