diff options
| author | Robin Murphy <robin.murphy@arm.com> | 2026-01-12 15:46:37 +0000 |
|---|---|---|
| committer | Marek Szyprowski <m.szyprowski@samsung.com> | 2026-01-14 11:00:00 +0100 |
| commit | 6626734dd2b151753e134730e27d17e64784c345 (patch) | |
| tree | 9be3aff0fbee2d491023b3e51a04fdabd6a33fd2 /include/linux | |
| parent | b31ac41b59b6b6f1f6d426e2088e5c391bf89bf3 (diff) | |
mm_zone: Generalise has_managed_dma()
It would be useful to be able to check for potential DMA pages beyond
just ZONE_DMA - generalise the existing has_managed_dma() function to
allow checking other zones too.
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Acked-by: David Hildenbrand (Red Hat) <david@kernel.org>
Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Tested-by: Vladimir Kondratiev <vladimir.kondratiev@mobileye.com>
Reviewed-by: Baoquan He <bhe@redhat.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/bd002d2351074e57be1ca08f03f333debac658fb.1768230104.git.robin.murphy@arm.com
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/mmzone.h | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 75ef7c9f9307..fc5d6c88d2f0 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -1648,14 +1648,15 @@ static inline int is_highmem(const struct zone *zone) return is_highmem_idx(zone_idx(zone)); } -#ifdef CONFIG_ZONE_DMA -bool has_managed_dma(void); -#else +bool has_managed_zone(enum zone_type zone); static inline bool has_managed_dma(void) { +#ifdef CONFIG_ZONE_DMA + return has_managed_zone(ZONE_DMA); +#else return false; -} #endif +} #ifndef CONFIG_NUMA |