From: Benjamin Gaignard <benjamin.gaignard@linaro.org>
To: John Stultz <john.stultz@linaro.org>
Cc: lkml <linux-kernel@vger.kernel.org>,
Laura Abbott <labbott@redhat.com>,
Greg KH <gregkh@linuxfoundation.org>,
Sumit Semwal <sumit.semwal@linaro.org>,
Liam Mark <lmark@codeaurora.org>,
Brian Starkey <Brian.Starkey@arm.com>,
"Andrew F . Davis" <afd@ti.com>, Chenbo Feng <fengc@google.com>,
Alistair Strachan <astrachan@google.com>,
ML dri-devel <dri-devel@lists.freedesktop.org>
Subject: Re: [RFC][PATCH 5/5 v2] kselftests: Add dma-heap test
Date: Wed, 6 Mar 2019 17:14:35 +0100 [thread overview]
Message-ID: <CA+M3ks6AUmmYbXscjTRo+Vr-6cV8okafsDn2Tg3tskvzrV_dbA@mail.gmail.com> (raw)
In-Reply-To: <1551819273-640-6-git-send-email-john.stultz@linaro.org>
Le mar. 5 mars 2019 à 21:54, John Stultz <john.stultz@linaro.org> a écrit :
>
> Add very trivial allocation test for dma-heaps.
>
> TODO: Need to actually do some validation on
> the returned dma-buf.
>
> Cc: Laura Abbott <labbott@redhat.com>
> Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org>
> Cc: Greg KH <gregkh@linuxfoundation.org>
> Cc: Sumit Semwal <sumit.semwal@linaro.org>
> Cc: Liam Mark <lmark@codeaurora.org>
> Cc: Brian Starkey <Brian.Starkey@arm.com>
> Cc: Andrew F. Davis <afd@ti.com>
> Cc: Chenbo Feng <fengc@google.com>
> Cc: Alistair Strachan <astrachan@google.com>
> Cc: dri-devel@lists.freedesktop.org
> Signed-off-by: John Stultz <john.stultz@linaro.org>
> ---
> v2: Switched to use reworked dma-heap apis
> ---
> tools/testing/selftests/dmabuf-heaps/Makefile | 11 +++
> tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c | 96 ++++++++++++++++++++++
> 2 files changed, 107 insertions(+)
> create mode 100644 tools/testing/selftests/dmabuf-heaps/Makefile
> create mode 100644 tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c
>
> diff --git a/tools/testing/selftests/dmabuf-heaps/Makefile b/tools/testing/selftests/dmabuf-heaps/Makefile
> new file mode 100644
> index 0000000..c414ad3
> --- /dev/null
> +++ b/tools/testing/selftests/dmabuf-heaps/Makefile
> @@ -0,0 +1,11 @@
> +# SPDX-License-Identifier: GPL-2.0
> +CFLAGS += -static -O3 -Wl,-no-as-needed -Wall
> +#LDLIBS += -lrt -lpthread -lm
> +
> +# these are all "safe" tests that don't modify
> +# system time or require escalated privileges
> +TEST_GEN_PROGS = dmabuf-heap
> +
> +
> +include ../lib.mk
> +
> diff --git a/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c b/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c
> new file mode 100644
> index 0000000..06837a4
> --- /dev/null
> +++ b/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c
> @@ -0,0 +1,96 @@
> +// SPDX-License-Identifier: GPL-2.0
> +
> +#include <dirent.h>
> +#include <errno.h>
> +#include <fcntl.h>
> +#include <stdio.h>
> +#include <string.h>
> +#include <unistd.h>
> +#include <sys/ioctl.h>
> +#include <sys/mman.h>
> +#include <sys/types.h>
> +
> +#include "../../../../include/uapi/linux/dma-heap.h"
> +
> +#define DEVPATH "/dev/dma_heap"
> +
> +int dmabuf_heap_open(char *name)
> +{
> + int ret, fd;
> + char buf[256];
> +
> + ret = sprintf(buf, "%s/%s", DEVPATH, name);
> + if (ret < 0) {
> + printf("sprintf failed!\n");
> + return ret;
> + }
> +
> + fd = open(buf, O_RDWR);
> + if (fd < 0)
> + printf("open %s failed!\n", buf);
> + return fd;
> +}
> +
> +int dmabuf_heap_alloc(int fd, size_t len, unsigned int flags, int *dmabuf_fd)
> +{
> + struct dma_heap_allocation_data data = {
> + .len = len,
> + .flags = flags,
> + };
> + int ret;
> +
> + if (dmabuf_fd == NULL)
> + return -EINVAL;
> +
> + ret = ioctl(fd, DMA_HEAP_IOC_ALLOC, &data);
> + if (ret < 0)
> + return ret;
> + *dmabuf_fd = (int)data.fd;
> + return ret;
> +}
> +
> +#define ONE_MEG (1024*1024)
> +
> +void do_test(char *heap_name)
> +{
> + int heap_fd = -1, dmabuf_fd = -1;
> + int ret;
> +
> + printf("Testing heap: %s\n", heap_name);
> +
> + heap_fd = dmabuf_heap_open(heap_name);
> + if (heap_fd < 0)
> + return;
> +
> + printf("Allocating 1 MEG\n");
> + ret = dmabuf_heap_alloc(heap_fd, ONE_MEG, 0, &dmabuf_fd);
> + if (ret)
> + goto out;
> +
> + /* DO SOMETHING WITH THE DMABUF HERE? */
You can do a call to mmap and write a pattern in the buffer.
Benjamin
> +
> +out:
> + if (dmabuf_fd >= 0)
> + close(dmabuf_fd);
> + if (heap_fd >= 0)
> + close(heap_fd);
> +}
> +
> +
> +int main(void)
> +{
> + DIR *d;
> + struct dirent *dir;
> +
> + d = opendir(DEVPATH);
> + if (!d) {
> + printf("No %s directory?\n", DEVPATH);
> + return -1;
> + }
> +
> + while ((dir = readdir(d)) != NULL)
> + do_test(dir->d_name);
> +
> +
> + return 0;
> +}
> --
> 2.7.4
>
--
Benjamin Gaignard
Graphic Study Group
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
next prev parent reply other threads:[~2019-03-06 16:14 UTC|newest]
Thread overview: 69+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-05 20:54 [RFC][PATCH 0/5 v2] DMA-BUF Heaps (destaging ION) John Stultz
2019-03-05 20:54 ` [RFC][PATCH 1/5 v2] dma-buf: Add dma-buf heaps framework John Stultz
2019-03-06 16:12 ` Benjamin Gaignard
2019-03-06 16:57 ` John Stultz
2019-03-15 8:55 ` Christoph Hellwig
2019-03-06 16:27 ` Andrew F. Davis
2019-03-06 19:03 ` John Stultz
2019-03-06 21:45 ` Andrew F. Davis
2019-03-15 8:54 ` Christoph Hellwig
2019-03-15 20:24 ` Andrew F. Davis
2019-03-15 20:18 ` Laura Abbott
2019-03-15 20:49 ` Andrew F. Davis
2019-03-15 21:29 ` John Stultz
2019-03-15 22:44 ` Laura Abbott
2019-03-18 4:38 ` Sumit Semwal
2019-03-18 4:41 ` Sumit Semwal
2019-03-19 12:08 ` Brian Starkey
2019-03-19 15:24 ` Andrew F. Davis
2019-03-21 21:16 ` John Stultz
2019-03-27 14:53 ` Greg KH
2019-03-28 6:09 ` John Stultz
2019-03-05 20:54 ` [RFC][PATCH 2/5 v2] dma-buf: heaps: Add heap helpers John Stultz
2019-03-13 20:18 ` Liam Mark
2019-03-13 21:48 ` Andrew F. Davis
2019-03-13 22:57 ` Liam Mark
2019-03-13 23:42 ` Andrew F. Davis
2019-03-15 9:06 ` Christoph Hellwig
2019-03-19 15:03 ` Andrew F. Davis
2019-03-21 20:01 ` John Stultz
2019-03-19 14:26 ` Brian Starkey
2019-03-21 20:11 ` John Stultz
2019-03-21 20:35 ` Andrew F. Davis
2019-03-21 20:43 ` Andrew F. Davis
2019-03-05 20:54 ` [RFC][PATCH 3/5 v2] dma-buf: heaps: Add system heap to dmabuf heaps John Stultz
2019-03-06 16:01 ` Benjamin Gaignard
2019-03-11 5:48 ` John Stultz
2019-03-13 20:20 ` Liam Mark
2019-03-13 22:49 ` John Stultz
2019-03-15 9:06 ` Christoph Hellwig
2019-03-05 20:54 ` [RFC][PATCH 4/5 v2] dma-buf: heaps: Add CMA heap to dmabuf heapss John Stultz
2019-03-06 16:05 ` Benjamin Gaignard
2019-03-21 20:15 ` John Stultz
2019-03-15 9:06 ` Christoph Hellwig
2019-03-15 20:08 ` John Stultz
2019-03-19 14:53 ` Brian Starkey
2019-03-05 20:54 ` [RFC][PATCH 5/5 v2] kselftests: Add dma-heap test John Stultz
2019-03-06 16:14 ` Benjamin Gaignard [this message]
2019-03-06 16:35 ` Andrew F. Davis
2019-03-06 18:19 ` John Stultz
2019-03-06 18:32 ` Andrew F. Davis
2019-03-06 17:01 ` John Stultz
2019-03-15 20:07 ` Laura Abbott
2019-03-15 20:13 ` John Stultz
2019-03-15 20:49 ` Laura Abbott
2019-03-13 20:23 ` Liam Mark
2019-03-13 20:11 ` [RFC][PATCH 0/5 v2] DMA-BUF Heaps (destaging ION) Liam Mark
2019-03-13 22:30 ` John Stultz
2019-03-13 23:29 ` Liam Mark
2019-03-19 16:54 ` Benjamin Gaignard
2019-03-19 16:59 ` Andrew F. Davis
2019-03-19 21:58 ` Rob Clark
2019-03-19 22:36 ` John Stultz
2019-03-20 9:16 ` Benjamin Gaignard
2019-03-20 14:44 ` Andrew F. Davis
2019-03-20 15:59 ` Benjamin Gaignard
2019-03-20 16:11 ` John Stultz
2019-03-15 20:34 ` Laura Abbott
2019-03-15 23:15 ` Jerome Glisse
2019-03-16 0:16 ` John Stultz
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=CA+M3ks6AUmmYbXscjTRo+Vr-6cV8okafsDn2Tg3tskvzrV_dbA@mail.gmail.com \
--to=benjamin.gaignard@linaro.org \
--cc=Brian.Starkey@arm.com \
--cc=afd@ti.com \
--cc=astrachan@google.com \
--cc=dri-devel@lists.freedesktop.org \
--cc=fengc@google.com \
--cc=gregkh@linuxfoundation.org \
--cc=john.stultz@linaro.org \
--cc=labbott@redhat.com \
--cc=linux-kernel@vger.kernel.org \
--cc=lmark@codeaurora.org \
--cc=sumit.semwal@linaro.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).