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gpu: nvgpu: Use tegra_alloc_fd() only on Tegra kernel

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tegra_alloc_fd() exists only in Tegra kernel. Use get_unused_fd_flags()
in other platforms.

JIRA NVGPU-4

Change-Id: I12b16957263f6cea771314a9da229384c865e65f
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1689538
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Alex Waterman <alexw@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Terje Bergstrom
2018-04-05 14:16:04 -07:00
committed by mobile promotions
parent 1389aa3e87
commit aeaa7c9826
2 changed files with 17 additions and 0 deletions
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11
drivers/gpu/nvgpu/Kconfig
View File

@@ -135,3 +135,14 @@ config NVGPU_SUPPORT_CDE
default y
help
Enable support for extraction of comptags for CDE.
config NVGPU_USE_TEGRA_ALLOC_FD
bool "Use tegra_alloc_fd() for allocating dma_buf fds for vidmem"
depends on GK20A && GK20A_VIDMEM
default y
help
Use tegra_alloc_fd() for allocating dma_buf fds. This allocates
the fds above 1024 which exempts them from counting against process
fd limit.
It is only available in Tegra kernel.

6
drivers/gpu/nvgpu/common/linux/vidmem.c
View File

@@ -17,7 +17,9 @@
#include <linux/dma-buf.h>
#include <uapi/linux/nvgpu.h>
#ifdef CONFIG_NVGPU_USE_TEGRA_ALLOC_FD
#include <linux/platform/tegra/tegra_fd.h>
#endif
#include <nvgpu/dma.h>
#include <nvgpu/enabled.h>
@@ -195,7 +197,11 @@ int nvgpu_vidmem_export_linux(struct gk20a *g, size_t bytes)
buf->priv = priv;
#ifdef CONFIG_NVGPU_USE_TEGRA_ALLOC_FD
fd = tegra_alloc_fd(current->files, 1024, O_RDWR);
#else
fd = get_unused_fd_flags(O_RDWR);
#endif
if (fd < 0) {
/* ->release frees what we have done */
dma_buf_put(priv->dmabuf);