On 04/03/2025 11:37, Thomas Hellström wrote:
Add proper #ifndef around the xe_hmm.h header, proper spacing
and since the documentation mostly follows kerneldoc format,
make it kerneldoc. Also prepare for upcoming -stable fixes.
Fixes: 81e058a3e7fd ("drm/xe: Introduce helper to populate userptr")
Cc: Oak Zeng <oak.zeng@xxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx> # v6.10+
Signed-off-by: Thomas Hellström <thomas.hellstrom@xxxxxxxxxxxxxxx>
Reviewed-by: Matthew Auld <matthew.auld@xxxxxxxxx>
---
drivers/gpu/drm/xe/xe_hmm.c | 9 +++------
drivers/gpu/drm/xe/xe_hmm.h | 5 +++++
2 files changed, 8 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/xe/xe_hmm.c b/drivers/gpu/drm/xe/xe_hmm.c
index 089834467880..c56738fa713b 100644
--- a/drivers/gpu/drm/xe/xe_hmm.c
+++ b/drivers/gpu/drm/xe/xe_hmm.c
@@ -19,11 +19,10 @@ static u64 xe_npages_in_range(unsigned long start, unsigned long end)
return (end - start) >> PAGE_SHIFT;
}
-/*
+/**
* xe_mark_range_accessed() - mark a range is accessed, so core mm
* have such information for memory eviction or write back to
* hard disk
- *
* @range: the range to mark
* @write: if write to this range, we mark pages in this range
* as dirty
@@ -43,11 +42,10 @@ static void xe_mark_range_accessed(struct hmm_range *range, bool write)
}
}
-/*
+/**
* xe_build_sg() - build a scatter gather table for all the physical pages/pfn
* in a hmm_range. dma-map pages if necessary. dma-address is save in sg table
* and will be used to program GPU page table later.
- *
* @xe: the xe device who will access the dma-address in sg table
* @range: the hmm range that we build the sg table from. range->hmm_pfns[]
* has the pfn numbers of pages that back up this hmm address range.
@@ -112,9 +110,8 @@ static int xe_build_sg(struct xe_device *xe, struct hmm_range *range,
return ret;
}
-/*
+/**
* xe_hmm_userptr_free_sg() - Free the scatter gather table of userptr
- *
* @uvma: the userptr vma which hold the scatter gather table
*
* With function xe_userptr_populate_range, we allocate storage of
diff --git a/drivers/gpu/drm/xe/xe_hmm.h b/drivers/gpu/drm/xe/xe_hmm.h
index 909dc2bdcd97..9602cb7d976d 100644
--- a/drivers/gpu/drm/xe/xe_hmm.h
+++ b/drivers/gpu/drm/xe/xe_hmm.h
@@ -3,9 +3,14 @@
* Copyright © 2024 Intel Corporation
*/
+#ifndef _XE_HMM_H_
+#define _XE_HMM_H_
+
#include <linux/types.h>
struct xe_userptr_vma;
int xe_hmm_userptr_populate_range(struct xe_userptr_vma *uvma, bool is_mm_mmap_locked);
+
void xe_hmm_userptr_free_sg(struct xe_userptr_vma *uvma);
+#endif
