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drm/tegra: Implement buffer object cache

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This cache is used to avoid mapping and unmapping buffer objects
unnecessarily. Mappings are cached per client and stay hot until
the buffer object is destroyed.

Bug 200768479

Signed-off-by: Thierry Reding <treding@nvidia.com>
Change-Id: Ia2efe2b77b5043b665bae403d9eba4698e6a5228
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2596399
(cherry picked from commit d23156d94fa9499256e8082250e3bc02559f9c8d)
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2620152
Tested-by: Jonathan Hunter <jonathanh@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: Jonathan Hunter <jonathanh@nvidia.com>
Reviewed-by: svc_kernel_abi <svc_kernel_abi@nvidia.com>
Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
GVS: Gerrit_Virtual_Submit
This commit is contained in:
Thierry Reding
2020-02-07 16:50:52 +01:00
committed by Laxman Dewangan
parent d802ae96a7
commit 2a938c39ec
5 changed files with 125 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/gpu/host1x/dev.c
View File

@@ -404,6 +404,7 @@ static int host1x_probe(struct platform_device *pdev)
if (syncpt_irq < 0)
return syncpt_irq;
host1x_bo_cache_init(&host->cache);
mutex_init(&host->devices_lock);
INIT_LIST_HEAD(&host->devices);
INIT_LIST_HEAD(&host->list);
@@ -539,6 +540,7 @@ static int host1x_remove(struct platform_device *pdev)
reset_control_assert(host->rst);
clk_disable_unprepare(host->clk);
host1x_iommu_exit(host);
host1x_bo_cache_destroy(&host->cache);
return 0;
}