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| author | Suren Baghdasaryan <surenb@google.com> | 2024-07-03 10:42:25 -0700 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-07-12 15:52:20 -0700 |
| commit | 3b0ba54d5f8ff60553c01d3ec3c607ab7bb3b452 (patch) | |
| tree | cf59b04a3a4b987e4305704fc234eb45f47384df /include/linux/dma-fence-chain.h | |
| parent | cd1e0dac3a3e57d86085eea95ab0cf3172950156 (diff) | |
| download | linux-3b0ba54d5f8ff60553c01d3ec3c607ab7bb3b452.tar.gz linux-3b0ba54d5f8ff60553c01d3ec3c607ab7bb3b452.tar.bz2 linux-3b0ba54d5f8ff60553c01d3ec3c607ab7bb3b452.zip | |
mm: add comments for allocation helpers explaining why they are macros
A number of allocation helper functions were converted into macros to
account them at the call sites. Add a comment for each converted
allocation helper explaining why it has to be a macro and why we typecast
the return value wherever required. The patch also moves
acpi_os_acquire_object() closer to other allocation helpers to group them
together under the same comment. The patch has no functional changes.
Link: https://lkml.kernel.org/r/20240703174225.3891393-1-surenb@google.com
Fixes: 2c321f3f70bc ("mm: change inlined allocation helpers to account at the call site")
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Suggested-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Christian König <christian.koenig@amd.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Jan Kara <jack@suse.cz>
Cc: Kent Overstreet <kent.overstreet@linux.dev>
Cc: Thorsten Blum <thorsten.blum@toblux.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include/linux/dma-fence-chain.h')
| -rw-r--r-- | include/linux/dma-fence-chain.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/dma-fence-chain.h b/include/linux/dma-fence-chain.h index ad9e2506c2f4..68c3c1e41014 100644 --- a/include/linux/dma-fence-chain.h +++ b/include/linux/dma-fence-chain.h @@ -85,6 +85,10 @@ dma_fence_chain_contained(struct dma_fence *fence) * dma_fence_chain_alloc * * Returns a new struct dma_fence_chain object or NULL on failure. + * + * This specialized allocator has to be a macro for its allocations to be + * accounted separately (to have a separate alloc_tag). The typecast is + * intentional to enforce typesafety. */ #define dma_fence_chain_alloc() \ ((struct dma_fence_chain *)kmalloc(sizeof(struct dma_fence_chain), GFP_KERNEL)) |