[Mesa-dev] [RFC 7/7] radeon: remove screen ref counting
Rob Herring
robh at kernel.org
Fri Jun 17 17:45:36 UTC 2016
Now that the pipe-loader is reference counting the screen creation, it
is unnecessary to do in it the winsys/driver.
Signed-off-by: Rob Herring <robh at kernel.org>
Cc: "Marek Olšák" <marek.olsak at amd.com>
Cc: Ilia Mirkin <imirkin at alum.mit.edu>
---
src/gallium/drivers/r300/r300_screen.c | 3 -
src/gallium/drivers/r600/r600_pipe.c | 6 --
src/gallium/drivers/radeon/radeon_winsys.h | 8 ---
src/gallium/drivers/radeonsi/si_pipe.c | 6 --
src/gallium/winsys/amdgpu/drm/amdgpu_winsys.c | 66 +------------------
src/gallium/winsys/amdgpu/drm/amdgpu_winsys.h | 1 -
src/gallium/winsys/radeon/drm/radeon_drm_winsys.c | 80 +----------------------
7 files changed, 3 insertions(+), 167 deletions(-)
diff --git a/src/gallium/drivers/r300/r300_screen.c b/src/gallium/drivers/r300/r300_screen.c
index 681681b..5d2d955 100644
--- a/src/gallium/drivers/r300/r300_screen.c
+++ b/src/gallium/drivers/r300/r300_screen.c
@@ -674,9 +674,6 @@ static void r300_destroy_screen(struct pipe_screen* pscreen)
struct r300_screen* r300screen = r300_screen(pscreen);
struct radeon_winsys *rws = radeon_winsys(pscreen);
- if (rws && !rws->unref(rws))
- return;
-
pipe_mutex_destroy(r300screen->cmask_mutex);
if (rws)
diff --git a/src/gallium/drivers/r600/r600_pipe.c b/src/gallium/drivers/r600/r600_pipe.c
index a49b00f..66cb78c 100644
--- a/src/gallium/drivers/r600/r600_pipe.c
+++ b/src/gallium/drivers/r600/r600_pipe.c
@@ -566,12 +566,6 @@ static void r600_destroy_screen(struct pipe_screen* pscreen)
{
struct r600_screen *rscreen = (struct r600_screen *)pscreen;
- if (!rscreen)
- return;
-
- if (!rscreen->b.ws->unref(rscreen->b.ws))
- return;
-
if (rscreen->global_pool) {
compute_memory_pool_delete(rscreen->global_pool);
}
diff --git a/src/gallium/drivers/radeon/radeon_winsys.h b/src/gallium/drivers/radeon/radeon_winsys.h
index c2d1f9e..ffe0d83 100644
--- a/src/gallium/drivers/radeon/radeon_winsys.h
+++ b/src/gallium/drivers/radeon/radeon_winsys.h
@@ -416,14 +416,6 @@ struct radeon_winsys {
struct pipe_screen *screen;
/**
- * Decrement the winsys reference count.
- *
- * \param ws The winsys this function is called for.
- * \return True if the winsys and screen should be destroyed.
- */
- bool (*unref)(struct radeon_winsys *ws);
-
- /**
* Destroy this winsys.
*
* \param ws The winsys this function is called from.
diff --git a/src/gallium/drivers/radeonsi/si_pipe.c b/src/gallium/drivers/radeonsi/si_pipe.c
index 0c601da..f3256fc 100644
--- a/src/gallium/drivers/radeonsi/si_pipe.c
+++ b/src/gallium/drivers/radeonsi/si_pipe.c
@@ -628,12 +628,6 @@ static void si_destroy_screen(struct pipe_screen* pscreen)
};
unsigned i;
- if (!sscreen)
- return;
-
- if (!sscreen->b.ws->unref(sscreen->b.ws))
- return;
-
/* Free shader parts. */
for (i = 0; i < ARRAY_SIZE(parts); i++) {
while (parts[i]) {
diff --git a/src/gallium/winsys/amdgpu/drm/amdgpu_winsys.c b/src/gallium/winsys/amdgpu/drm/amdgpu_winsys.c
index 7016221..39b4a11 100644
--- a/src/gallium/winsys/amdgpu/drm/amdgpu_winsys.c
+++ b/src/gallium/winsys/amdgpu/drm/amdgpu_winsys.c
@@ -34,7 +34,6 @@
#include "amdgpu_cs.h"
#include "amdgpu_public.h"
-#include "util/u_hash_table.h"
#include <amdgpu_drm.h>
#include <xf86drm.h>
#include <stdio.h>
@@ -59,9 +58,6 @@
#define CIK__PIPE_CONFIG__ADDR_SURF_P16_32X32_8X16 16
#define CIK__PIPE_CONFIG__ADDR_SURF_P16_32X32_16X16 17
-static struct util_hash_table *dev_tab = NULL;
-pipe_static_mutex(dev_tab_mutex);
-
static unsigned cik_get_num_tile_pipes(struct amdgpu_gpu_info *info)
{
unsigned mode2d = info->gb_tile_mode[CIK_TILE_MODE_COLOR_2D];
@@ -386,20 +382,6 @@ static bool amdgpu_read_registers(struct radeon_winsys *rws,
0xffffffff, 0, out) == 0;
}
-static unsigned hash_dev(void *key)
-{
-#if defined(PIPE_ARCH_X86_64)
- return pointer_to_intptr(key) ^ (pointer_to_intptr(key) >> 32);
-#else
- return pointer_to_intptr(key);
-#endif
-}
-
-static int compare_dev(void *key1, void *key2)
-{
- return key1 != key2;
-}
-
void amdgpu_ws_queue_cs(struct amdgpu_winsys *ws, struct amdgpu_cs *cs)
{
pipe_semaphore_wait(&ws->cs_queue_has_space);
@@ -448,26 +430,6 @@ static PIPE_THREAD_ROUTINE(amdgpu_cs_thread_func, param)
DEBUG_GET_ONCE_BOOL_OPTION(thread, "RADEON_THREAD", TRUE)
static PIPE_THREAD_ROUTINE(amdgpu_cs_thread_func, param);
-static bool amdgpu_winsys_unref(struct radeon_winsys *rws)
-{
- struct amdgpu_winsys *ws = (struct amdgpu_winsys*)rws;
- bool destroy;
-
- /* When the reference counter drops to zero, remove the device pointer
- * from the table.
- * This must happen while the mutex is locked, so that
- * amdgpu_winsys_create in another thread doesn't get the winsys
- * from the table when the counter drops to 0. */
- pipe_mutex_lock(dev_tab_mutex);
-
- destroy = pipe_reference(&ws->reference, NULL);
- if (destroy && dev_tab)
- util_hash_table_remove(dev_tab, ws->dev);
-
- pipe_mutex_unlock(dev_tab_mutex);
- return destroy;
-}
-
PUBLIC struct radeon_winsys *
amdgpu_winsys_create(int fd, radeon_screen_create_t screen_create)
{
@@ -483,34 +445,18 @@ amdgpu_winsys_create(int fd, radeon_screen_create_t screen_create)
}
drmFreeVersion(version);
- /* Look up the winsys from the dev table. */
- pipe_mutex_lock(dev_tab_mutex);
- if (!dev_tab)
- dev_tab = util_hash_table_create(hash_dev, compare_dev);
-
/* Initialize the amdgpu device. This should always return the same pointer
* for the same fd. */
r = amdgpu_device_initialize(fd, &drm_major, &drm_minor, &dev);
if (r) {
- pipe_mutex_unlock(dev_tab_mutex);
fprintf(stderr, "amdgpu: amdgpu_device_initialize failed.\n");
return NULL;
}
- /* Lookup a winsys if we have already created one for this device. */
- ws = util_hash_table_get(dev_tab, dev);
- if (ws) {
- pipe_reference(NULL, &ws->reference);
- pipe_mutex_unlock(dev_tab_mutex);
- return &ws->base;
- }
-
/* Create a new winsys. */
ws = CALLOC_STRUCT(amdgpu_winsys);
- if (!ws) {
- pipe_mutex_unlock(dev_tab_mutex);
+ if (!ws)
return NULL;
- }
ws->dev = dev;
ws->info.drm_major = drm_major;
@@ -528,7 +474,6 @@ amdgpu_winsys_create(int fd, radeon_screen_create_t screen_create)
pipe_reference_init(&ws->reference, 1);
/* Set functions. */
- ws->base.unref = amdgpu_winsys_unref;
ws->base.destroy = amdgpu_winsys_destroy;
ws->base.query_info = amdgpu_winsys_query_info;
ws->base.cs_request_feature = amdgpu_cs_request_feature;
@@ -558,21 +503,12 @@ amdgpu_winsys_create(int fd, radeon_screen_create_t screen_create)
ws->base.screen = screen_create(&ws->base);
if (!ws->base.screen) {
amdgpu_winsys_destroy(&ws->base);
- pipe_mutex_unlock(dev_tab_mutex);
return NULL;
}
- util_hash_table_set(dev_tab, dev, ws);
-
- /* We must unlock the mutex once the winsys is fully initialized, so that
- * other threads attempting to create the winsys from the same fd will
- * get a fully initialized winsys and not just half-way initialized. */
- pipe_mutex_unlock(dev_tab_mutex);
-
return &ws->base;
fail:
- pipe_mutex_unlock(dev_tab_mutex);
pb_cache_deinit(&ws->bo_cache);
FREE(ws);
return NULL;
diff --git a/src/gallium/winsys/amdgpu/drm/amdgpu_winsys.h b/src/gallium/winsys/amdgpu/drm/amdgpu_winsys.h
index d6734f7..61fc21d 100644
--- a/src/gallium/winsys/amdgpu/drm/amdgpu_winsys.h
+++ b/src/gallium/winsys/amdgpu/drm/amdgpu_winsys.h
@@ -42,7 +42,6 @@ struct amdgpu_cs;
struct amdgpu_winsys {
struct radeon_winsys base;
- struct pipe_reference reference;
struct pb_cache bo_cache;
amdgpu_device_handle dev;
diff --git a/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c b/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c
index 5c85c8f..7ef00e5 100644
--- a/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c
+++ b/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c
@@ -42,7 +42,6 @@
#include <xf86drm.h>
#include <stdio.h>
#include <sys/types.h>
-#include <sys/stat.h>
#include <unistd.h>
#include <radeon_surface.h>
@@ -63,9 +62,6 @@
#define RADEON_INFO_GPU_RESET_COUNTER 0x26
#endif
-static struct util_hash_table *fd_tab = NULL;
-pipe_static_mutex(fd_tab_mutex);
-
/* Enable/disable feature access for one command stream.
* If enable == TRUE, return TRUE on success.
* Otherwise, return FALSE.
@@ -557,9 +553,6 @@ static void radeon_winsys_destroy(struct radeon_winsys *rws)
pipe_mutex_destroy(ws->bo_handles_mutex);
pipe_mutex_destroy(ws->bo_va_mutex);
- if (ws->fd >= 0)
- close(ws->fd);
-
FREE(rws);
}
@@ -664,28 +657,6 @@ static bool radeon_read_registers(struct radeon_winsys *rws,
return true;
}
-static unsigned hash_fd(void *key)
-{
- int fd = pointer_to_intptr(key);
- struct stat stat;
- fstat(fd, &stat);
-
- return stat.st_dev ^ stat.st_ino ^ stat.st_rdev;
-}
-
-static int compare_fd(void *key1, void *key2)
-{
- int fd1 = pointer_to_intptr(key1);
- int fd2 = pointer_to_intptr(key2);
- struct stat stat1, stat2;
- fstat(fd1, &stat1);
- fstat(fd2, &stat2);
-
- return stat1.st_dev != stat2.st_dev ||
- stat1.st_ino != stat2.st_ino ||
- stat1.st_rdev != stat2.st_rdev;
-}
-
void radeon_drm_ws_queue_cs(struct radeon_drm_winsys *ws, struct radeon_drm_cs *cs)
{
retry:
@@ -736,25 +707,6 @@ static PIPE_THREAD_ROUTINE(radeon_drm_cs_emit_ioctl, param)
DEBUG_GET_ONCE_BOOL_OPTION(thread, "RADEON_THREAD", TRUE)
static PIPE_THREAD_ROUTINE(radeon_drm_cs_emit_ioctl, param);
-static bool radeon_winsys_unref(struct radeon_winsys *ws)
-{
- struct radeon_drm_winsys *rws = (struct radeon_drm_winsys*)ws;
- bool destroy;
-
- /* When the reference counter drops to zero, remove the fd from the table.
- * This must happen while the mutex is locked, so that
- * radeon_drm_winsys_create in another thread doesn't get the winsys
- * from the table when the counter drops to 0. */
- pipe_mutex_lock(fd_tab_mutex);
-
- destroy = pipe_reference(&rws->reference, NULL);
- if (destroy && fd_tab)
- util_hash_table_remove(fd_tab, intptr_to_pointer(rws->fd));
-
- pipe_mutex_unlock(fd_tab_mutex);
- return destroy;
-}
-
#define PTR_TO_UINT(x) ((unsigned)((intptr_t)(x)))
static unsigned handle_hash(void *key)
@@ -772,25 +724,11 @@ radeon_drm_winsys_create(int fd, radeon_screen_create_t screen_create)
{
struct radeon_drm_winsys *ws;
- pipe_mutex_lock(fd_tab_mutex);
- if (!fd_tab) {
- fd_tab = util_hash_table_create(hash_fd, compare_fd);
- }
-
- ws = util_hash_table_get(fd_tab, intptr_to_pointer(fd));
- if (ws) {
- pipe_reference(NULL, &ws->reference);
- pipe_mutex_unlock(fd_tab_mutex);
- return &ws->base;
- }
-
ws = CALLOC_STRUCT(radeon_drm_winsys);
- if (!ws) {
- pipe_mutex_unlock(fd_tab_mutex);
+ if (!ws)
return NULL;
- }
- ws->fd = dup(fd);
+ ws->fd = fd;
if (!do_winsys_init(ws))
goto fail1;
@@ -806,11 +744,8 @@ radeon_drm_winsys_create(int fd, radeon_screen_create_t screen_create)
goto fail;
}
- /* init reference */
- pipe_reference_init(&ws->reference, 1);
/* Set functions. */
- ws->base.unref = radeon_winsys_unref;
ws->base.destroy = radeon_winsys_destroy;
ws->base.query_info = radeon_query_info;
ws->base.cs_request_feature = radeon_cs_request_feature;
@@ -849,27 +784,16 @@ radeon_drm_winsys_create(int fd, radeon_screen_create_t screen_create)
ws->base.screen = screen_create(&ws->base);
if (!ws->base.screen) {
radeon_winsys_destroy(&ws->base);
- pipe_mutex_unlock(fd_tab_mutex);
return NULL;
}
- util_hash_table_set(fd_tab, intptr_to_pointer(ws->fd), ws);
-
- /* We must unlock the mutex once the winsys is fully initialized, so that
- * other threads attempting to create the winsys from the same fd will
- * get a fully initialized winsys and not just half-way initialized. */
- pipe_mutex_unlock(fd_tab_mutex);
-
return &ws->base;
fail:
pb_cache_deinit(&ws->bo_cache);
fail1:
- pipe_mutex_unlock(fd_tab_mutex);
if (ws->surf_man)
radeon_surface_manager_free(ws->surf_man);
- if (ws->fd >= 0)
- close(ws->fd);
FREE(ws);
return NULL;
--
2.7.4
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