From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
To: Felix.Kuehling@amd.com, alexander.deucher@amd.com,
christian.koenig@amd.com, Xinhui.Pan@amd.com, airlied@linux.ie,
daniel@ffwll.ch
Cc: amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org,
Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Subject: [PATCH 1/2] drm/amdkfd: Use bitmap_zalloc() when applicable
Date: Sun, 28 Nov 2021 17:45:55 +0100 [thread overview]
Message-ID: <f12820f6c5fca9b10ac8f82b3689c50ccb6966aa.1638117878.git.christophe.jaillet@wanadoo.fr> (raw)
'kfd->gtt_sa_bitmap' is a bitmap. So use 'bitmap_zalloc()' to simplify
code, improve the semantic and avoid some open-coded arithmetic in
allocator arguments.
Also change the corresponding 'kfree()' into 'bitmap_free()' to keep
consistency.
---
drivers/gpu/drm/amd/amdkfd/kfd_device.c | 12 +++---------
1 file changed, 3 insertions(+), 9 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device.c b/drivers/gpu/drm/amd/amdkfd/kfd_device.c
index e1294fba0c26..c5a0ce44a295 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device.c
@@ -1252,8 +1252,6 @@ int kgd2kfd_schedule_evict_and_restore_process(struct mm_struct *mm,
static int kfd_gtt_sa_init(struct kfd_dev *kfd, unsigned int buf_size,
unsigned int chunk_size)
{
- unsigned int num_of_longs;
-
if (WARN_ON(buf_size < chunk_size))
return -EINVAL;
if (WARN_ON(buf_size == 0))
@@ -1264,11 +1262,8 @@ static int kfd_gtt_sa_init(struct kfd_dev *kfd, unsigned int buf_size,
kfd->gtt_sa_chunk_size = chunk_size;
kfd->gtt_sa_num_of_chunks = buf_size / chunk_size;
- num_of_longs = (kfd->gtt_sa_num_of_chunks + BITS_PER_LONG - 1) /
- BITS_PER_LONG;
-
- kfd->gtt_sa_bitmap = kcalloc(num_of_longs, sizeof(long), GFP_KERNEL);
-
+ kfd->gtt_sa_bitmap = bitmap_zalloc(kfd->gtt_sa_num_of_chunks,
+ GFP_KERNEL);
if (!kfd->gtt_sa_bitmap)
return -ENOMEM;
@@ -1278,13 +1273,12 @@ static int kfd_gtt_sa_init(struct kfd_dev *kfd, unsigned int buf_size,
mutex_init(&kfd->gtt_sa_lock);
return 0;
-
}
static void kfd_gtt_sa_fini(struct kfd_dev *kfd)
{
mutex_destroy(&kfd->gtt_sa_lock);
- kfree(kfd->gtt_sa_bitmap);
+ bitmap_free(kfd->gtt_sa_bitmap);
}
static inline uint64_t kfd_gtt_sa_calc_gpu_addr(uint64_t start_addr,
--
2.30.2
next reply other threads:[~2021-11-28 16:48 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-28 16:45 Christophe JAILLET [this message]
2021-11-28 16:46 ` [PATCH 2/2] drm/amdkfd: Use non-atomic bitmap functions when possible Christophe JAILLET
2022-04-26 18:01 ` [PATCH 1/2] drm/amdkfd: Use bitmap_zalloc() when applicable Felix Kuehling
2022-04-26 18:47 ` Christophe JAILLET
2022-04-26 20:54 ` Felix Kuehling
-- strict thread matches above, loose matches on Subject: below --
2021-11-21 17:41 Christophe JAILLET
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