[PATCH i-g-t] tests/amdgpu: fix concurrent queue test issue

[vitaly prosyak]

The change looks good to me. 

Reviewed-by: Vitaly Prosyak <vitaly.prosyak at amd.com>

On 2024-09-05 22:13, Jesse.zhang at amd.com wrote:
> When running with parameter --device on multiple cards simultaneously.
> All queue test processes will share "/queue_reset_shm",which will create conflicts.
> such as:
> sudo ./tests/amdgpu/amd_queue_reset --device drm:/dev/dri/card0
> sudo ./tests/amdgpu/amd_queue_reset --device drm:/dev/dri/card1
>
> To solve this problem. It should open a unique shared memory for different devices.
>
> Signed-off-by: Jesse Zhang <jesse.zhang at amd.com>
> Reviewed-by: Vitaly Prosyak <vitaly.prosyak at amd.com>
> ---
>  tests/amdgpu/amd_queue_reset.c | 42 +++++++++++++++++++++++++++-------
>  1 file changed, 34 insertions(+), 8 deletions(-)
>
> diff --git a/tests/amdgpu/amd_queue_reset.c b/tests/amdgpu/amd_queue_reset.c
> index 537f653f9..8f5c7d4b8 100644
> --- a/tests/amdgpu/amd_queue_reset.c
> +++ b/tests/amdgpu/amd_queue_reset.c
> @@ -32,7 +32,6 @@
>  
>  #define SHARED_CHILD_DESCRIPTOR 3
>  
> -#define SHARED_MEM_NAME  "/queue_reset_shm"
>  #define TEST_TIMEOUT 100 //100 seconds
>  
>  enum  process_type {
> @@ -349,7 +348,7 @@ static void set_next_test_to_skip(struct shmbuf *sh_mem)
>  }
>  
>  static int
> -shared_mem_destroy(struct shmbuf *shmp, int shm_fd, bool unmap)
> +shared_mem_destroy(struct shmbuf *shmp, int shm_fd, bool unmap, char shm_name[256])
>  {
>  	int ret = 0;
>  
> @@ -363,20 +362,20 @@ shared_mem_destroy(struct shmbuf *shmp, int shm_fd, bool unmap)
>  	if (shm_fd > 0)
>  		close(shm_fd);
>  
> -	shm_unlink(SHARED_MEM_NAME);
> +	shm_unlink(shm_name);
>  
>  	return ret;
>  }
>  
>  static int
> -shared_mem_create(struct shmbuf **ppbuf)
> +shared_mem_create(struct shmbuf **ppbuf, char shm_name[256])
>  {
>  	int shm_fd = -1;
>  	struct shmbuf *shmp = NULL;
>  	bool unmap = false;
>  
>  	// Create a shared memory object
> -	shm_fd = shm_open(SHARED_MEM_NAME, O_CREAT | O_RDWR, 0666);
> +	shm_fd = shm_open(shm_name, O_CREAT | O_RDWR, 0666);
>  	if (shm_fd == -1)
>  		goto error;
>  
> @@ -414,7 +413,7 @@ shared_mem_create(struct shmbuf **ppbuf)
>  	return shm_fd;
>  
>  error:
> -	shared_mem_destroy(shmp,  shm_fd,  unmap);
> +	shared_mem_destroy(shmp,  shm_fd,  unmap, shm_name);
>  	return shm_fd;
>  }
>  
> @@ -877,6 +876,29 @@ is_run_subtest_parameter_found(int argc, char **argv)
>  	return ret;
>  }
>  
> +#define ONDEVICE	"--device"
> +static int
> +is_run_device_parameter_found(int argc, char **argv)
> +{
> +	int i;
> +	int res = 0;
> +	char *p = NULL;
> +
> +	for (i = 1; i < argc; i++) {
> +		if (strcmp(ONDEVICE, argv[i]) == 0) {
> +			/* Get the sum for a specific device as a unique identifier */
> +			p = argv[i+1];
> +			while(*p){
> +			  res += *p;
> +			  p++;
> +			}
> +			break;
> +		}
> +	}
> +
> +	return res;
> +}
> +
>  
>  static bool
>  add_background_parameter(int *pargc, char **argv)
> @@ -1041,6 +1063,7 @@ igt_main
>  	struct shmbuf *sh_mem = NULL;
>  
>  	int r;
> +	char shm_name[256] = {0};
>  	bool arr_cap[AMD_IP_MAX] = {0};
>  	unsigned int ring_id_good;
>  	unsigned int ring_id_bad;
> @@ -1100,6 +1123,9 @@ igt_main
>  		else
>  			const_num_of_tests = (sizeof(arr_err)/sizeof(struct dynamic_test) - 1) * ARRAY_SIZE(ip_tests);
>  
> +		r = is_run_device_parameter_found(argc, argv);
> +		snprintf(shm_name,sizeof(shm_name),"/queue_reset_shm_%d",r);
> +
>  		fd = drm_open_driver(DRIVER_AMDGPU);
>  
>  		err = amdgpu_device_initialize(fd, &major, &minor, &device);
> @@ -1121,7 +1147,7 @@ igt_main
>  
>  		if (!is_background_parameter_found(argc, argv)) {
>  			add_background_parameter(&argc, argv);
> -			fd_shm = shared_mem_create(&sh_mem);
> +			fd_shm = shared_mem_create(&sh_mem, shm_name);
>  			igt_require(fd_shm != -1);
>  			launch_background_process(argc, argv, path, &pid_background, fd_shm);
>  			process = PROCESS_TEST;
> @@ -1169,7 +1195,7 @@ igt_main
>  		free_contexts(device, arr_context_handle, const_num_of_tests);
>  		amdgpu_device_deinitialize(device);
>  		drm_close_driver(fd);
> -		shared_mem_destroy(sh_mem, fd_shm, true);
> +		shared_mem_destroy(sh_mem, fd_shm, true, shm_name);
>  		posix_spawn_file_actions_destroy(&action);
>  
>  		free_command_line(argc, argv, path);