Re: [PATCH] drm/amdgpu: simplify hw status clear/set logic

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On 8/27/20 4:32 AM, Jiawei wrote:
Optimize code to iterate less loops in
amdgpu_device_ip_reinit_early_sriov()

Signed-off-by: Jiawei <Jiawei.Gu@xxxxxxx>
---
  drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 13 ++++++-------
  1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 8f37f9f99105..696a61cc3ac6 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -2598,17 +2598,16 @@ static int amdgpu_device_ip_reinit_early_sriov(struct amdgpu_device *adev)
  		AMD_IP_BLOCK_TYPE_IH,
  	};
- for (i = 0; i < adev->num_ip_blocks; i++)
-		adev->ip_blocks[i].status.hw = false;
-
-	for (i = 0; i < ARRAY_SIZE(ip_order); i++) {
+	for (i = 0; i < adev->num_ip_blocks; i++) {
  		int j;
  		struct amdgpu_ip_block *block;
- for (j = 0; j < adev->num_ip_blocks; j++) {
-			block = &adev->ip_blocks[j];
+		block = &adev->ip_blocks[i];
+		block->status.hw = false;
- if (block->version->type != ip_order[i] ||
+		for (j = 0; j < ARRAY_SIZE(ip_order); j++) {


We could probably replace this "for" loop with a big if-statement

    if ( block->version->type== AMD_IP_BLOCK_TYPE_GMC ||

         block->version->type== AMD_IP_BLOCK_TYPE_COMMON ... )


But anyway it looks good to me as it is. Acked-by: Nirmoy Das <nirmoy.das@xxxxxxx>

+
+			if (block->version->type != ip_order[j] ||
  				!block->status.valid)
  				continue;
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