diff mbox

[3/4] prime_self_import: Assure no pending requests before object counting

Message ID 1383582649-2841-3-git-send-email-oscar.mateo@intel.com (mailing list archive)
State New, archived
Headers show

Commit Message

oscar.mateo@intel.com Nov. 4, 2013, 4:30 p.m. UTC
From: Oscar Mateo <oscar.mateo@intel.com>

We don't want a previously used object to be freed in the middle of a
before/after object counting operation (or we would get a "-1 objects
leaked" message). We have seen this happening, e.g., when a context
from a previous run dies, but its backing object is alive waiting for
a retire_work to kick in.

v2: Use igt_debugfs facilities for drop cache

Signed-off-by: Oscar Mateo <oscar.mateo@intel.com>
Cc: Ben Widawsky <ben@bwidawsk.net>
---
 tests/prime_self_import.c |   11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

Comments

Daniel Vetter Nov. 4, 2013, 5:09 p.m. UTC | #1
On Mon, Nov 04, 2013 at 04:30:48PM +0000, oscar.mateo@intel.com wrote:
> From: Oscar Mateo <oscar.mateo@intel.com>
> 
> We don't want a previously used object to be freed in the middle of a
> before/after object counting operation (or we would get a "-1 objects
> leaked" message). We have seen this happening, e.g., when a context
> from a previous run dies, but its backing object is alive waiting for
> a retire_work to kick in.
> 
> v2: Use igt_debugfs facilities for drop cache
> 
> Signed-off-by: Oscar Mateo <oscar.mateo@intel.com>
> Cc: Ben Widawsky <ben@bwidawsk.net>

Imo better to move the call to drop_caches into get_object_count - it
makes it clearer why we want this. I've applied the first two patches.

Thanks, Daniel
> ---
>  tests/prime_self_import.c |   11 +++++++++--
>  1 file changed, 9 insertions(+), 2 deletions(-)
> 
> diff --git a/tests/prime_self_import.c b/tests/prime_self_import.c
> index 2edc1f8..fb007bc 100644
> --- a/tests/prime_self_import.c
> +++ b/tests/prime_self_import.c
> @@ -46,6 +46,7 @@
>  #include "drm.h"
>  #include "i915_drm.h"
>  #include "drmtest.h"
> +#include "igt_debugfs.h"
>  
>  #define BO_SIZE (16*1024)
>  
> @@ -252,10 +253,13 @@ static void test_reimport_close_race(void)
>  	pthread_t *threads;
>  	int r, i, num_threads;
>  	int fds[2];
> -	int obj_count = get_object_count();
> +	int obj_count;
>  	void *status;
>  	uint32_t handle;
>  
> +	igt_drop_caches_set(DROP_RETIRE);
> +	obj_count = get_object_count();
> +
>  	num_threads = sysconf(_SC_NPROCESSORS_ONLN);
>  
>  	threads = calloc(num_threads, sizeof(pthread_t));
> @@ -330,9 +334,12 @@ static void test_export_close_race(void)
>  	pthread_t *threads;
>  	int r, i, num_threads;
>  	int fd;
> -	int obj_count = get_object_count();
> +	int obj_count;
>  	void *status;
>  
> +	igt_drop_caches_set(DROP_RETIRE);
> +	obj_count = get_object_count();
> +
>  	num_threads = sysconf(_SC_NPROCESSORS_ONLN);
>  
>  	threads = calloc(num_threads, sizeof(pthread_t));
> -- 
> 1.7.9.5
> 
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/intel-gfx
diff mbox

Patch

diff --git a/tests/prime_self_import.c b/tests/prime_self_import.c
index 2edc1f8..fb007bc 100644
--- a/tests/prime_self_import.c
+++ b/tests/prime_self_import.c
@@ -46,6 +46,7 @@ 
 #include "drm.h"
 #include "i915_drm.h"
 #include "drmtest.h"
+#include "igt_debugfs.h"
 
 #define BO_SIZE (16*1024)
 
@@ -252,10 +253,13 @@  static void test_reimport_close_race(void)
 	pthread_t *threads;
 	int r, i, num_threads;
 	int fds[2];
-	int obj_count = get_object_count();
+	int obj_count;
 	void *status;
 	uint32_t handle;
 
+	igt_drop_caches_set(DROP_RETIRE);
+	obj_count = get_object_count();
+
 	num_threads = sysconf(_SC_NPROCESSORS_ONLN);
 
 	threads = calloc(num_threads, sizeof(pthread_t));
@@ -330,9 +334,12 @@  static void test_export_close_race(void)
 	pthread_t *threads;
 	int r, i, num_threads;
 	int fd;
-	int obj_count = get_object_count();
+	int obj_count;
 	void *status;
 
+	igt_drop_caches_set(DROP_RETIRE);
+	obj_count = get_object_count();
+
 	num_threads = sysconf(_SC_NPROCESSORS_ONLN);
 
 	threads = calloc(num_threads, sizeof(pthread_t));