From: Jason Gunthorpe <jgg@ziepe.ca>
To: Uros Bizjak <ubizjak@gmail.com>
Cc: iommu@lists.linux.dev, linux-kernel@vger.kernel.org,
Joerg Roedel <joro@8bytes.org>,
Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>,
Will Deacon <will@kernel.org>,
Robin Murphy <robin.murphy@arm.com>
Subject: Re: [PATCH] iommu/amd: Use atomic64_inc_return() in iommu.c
Date: Tue, 8 Oct 2024 15:12:32 -0300 [thread overview]
Message-ID: <20241008181232.GD762027@ziepe.ca> (raw)
In-Reply-To: <20241007084356.47799-1-ubizjak@gmail.com>
On Mon, Oct 07, 2024 at 10:43:31AM +0200, Uros Bizjak wrote:
> Use atomic64_inc_return(&ref) instead of atomic64_add_return(1, &ref)
> to use optimized implementation and ease register pressure around
> the primitive for targets that implement optimized variant.
>
> Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
> Cc: Joerg Roedel <joro@8bytes.org>
> Cc: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
> Cc: Will Deacon <will@kernel.org>
> Cc: Robin Murphy <robin.murphy@arm.com>
> ---
> drivers/iommu/amd/iommu.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Jason
next prev parent reply other threads:[~2024-10-08 18:12 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-07 8:43 Uros Bizjak
2024-10-08 18:12 ` Jason Gunthorpe [this message]
2024-10-15 8:22 ` Joerg Roedel
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