From 83a35b68f45cebc70152e55ed3f99db485c9a7cd Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Wed, 11 Nov 2009 13:04:38 +0000
Subject: intel: Export madvise
Wrap the madvise ioctl for use in APPLE_object_purgeable.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
---
libdrm/intel/intel_bufmgr.c | 7 +++++++
libdrm/intel/intel_bufmgr.h | 1 +
libdrm/intel/intel_bufmgr_gem.c | 22 ++++++++++++++++------
libdrm/intel/intel_bufmgr_priv.h | 14 ++++++++++++++
4 files changed, 38 insertions(+), 6 deletions(-)
diff --git a/libdrm/intel/intel_bufmgr.c b/libdrm/intel/intel_bufmgr.c
index 2469cd84..61817739 100644
--- a/libdrm/intel/intel_bufmgr.c
+++ b/libdrm/intel/intel_bufmgr.c
@@ -224,6 +224,13 @@ int drm_intel_bo_busy(drm_intel_bo *bo)
return 0;
}
+int drm_intel_bo_madvise(drm_intel_bo *bo, int madv)
+{
+ if (bo->bufmgr->bo_madvise)
+ return bo->bufmgr->bo_madvise(bo, madv);
+ return -1;
+}
+
int drm_intel_bo_references(drm_intel_bo *bo, drm_intel_bo *target_bo)
{
return bo->bufmgr->bo_references(bo, target_bo);
diff --git a/libdrm/intel/intel_bufmgr.h b/libdrm/intel/intel_bufmgr.h
index 3801ff31..40984d32 100644
--- a/libdrm/intel/intel_bufmgr.h
+++ b/libdrm/intel/intel_bufmgr.h
@@ -119,6 +119,7 @@ int drm_intel_bo_get_tiling(drm_intel_bo *bo, uint32_t * tiling_mode,
uint32_t * swizzle_mode);
int drm_intel_bo_flink(drm_intel_bo *bo, uint32_t * name);
int drm_intel_bo_busy(drm_intel_bo *bo);
+int drm_intel_bo_madvise(drm_intel_bo *bo, int madv);
int drm_intel_bo_disable_reuse(drm_intel_bo *bo);
int drm_intel_bo_references(drm_intel_bo *bo, drm_intel_bo *target_bo);
diff --git a/libdrm/intel/intel_bufmgr_gem.c b/libdrm/intel/intel_bufmgr_gem.c
index 87795f33..9db7bfeb 100644
--- a/libdrm/intel/intel_bufmgr_gem.c
+++ b/libdrm/intel/intel_bufmgr_gem.c
@@ -398,8 +398,8 @@ drm_intel_gem_bo_busy(drm_intel_bo *bo)
}
static int
-drm_intel_gem_bo_madvise(drm_intel_bufmgr_gem *bufmgr_gem,
- drm_intel_bo_gem *bo_gem, int state)
+drm_intel_gem_bo_madvise_internal(drm_intel_bufmgr_gem *bufmgr_gem,
+ drm_intel_bo_gem *bo_gem, int state)
{
struct drm_i915_gem_madvise madv;
@@ -411,6 +411,15 @@ drm_intel_gem_bo_madvise(drm_intel_bufmgr_gem *bufmgr_gem,
return madv.retained;
}
+static int
+drm_intel_gem_bo_madvise(drm_intel_bo *bo, int madv)
+{
+ return drm_intel_gem_bo_madvise_internal
+ ((drm_intel_bufmgr_gem *) bo->bufmgr,
+ (drm_intel_bo_gem *) bo,
+ madv);
+}
+
/* drop the oldest entries that have been purged by the kernel */
static void
drm_intel_gem_bo_cache_purge_bucket(drm_intel_bufmgr_gem *bufmgr_gem,
@@ -421,7 +430,7 @@ drm_intel_gem_bo_cache_purge_bucket(drm_intel_bufmgr_gem *bufmgr_gem,
bo_gem = DRMLISTENTRY(drm_intel_bo_gem,
bucket->head.next, head);
- if (drm_intel_gem_bo_madvise
+ if (drm_intel_gem_bo_madvise_internal
(bufmgr_gem, bo_gem, I915_MADV_DONTNEED))
break;
@@ -493,7 +502,7 @@ retry:
}
if (alloc_from_cache) {
- if (!drm_intel_gem_bo_madvise
+ if (!drm_intel_gem_bo_madvise_internal
(bufmgr_gem, bo_gem, I915_MADV_WILLNEED)) {
drm_intel_gem_bo_free(&bo_gem->bo);
drm_intel_gem_bo_cache_purge_bucket(bufmgr_gem,
@@ -742,8 +751,8 @@ drm_intel_gem_bo_unreference_final(drm_intel_bo *bo, time_t time)
DRMLISTADDTAIL(&bo_gem->head, &bucket->head);
- drm_intel_gem_bo_madvise(bufmgr_gem, bo_gem,
- I915_MADV_DONTNEED);
+ drm_intel_gem_bo_madvise_internal(bufmgr_gem, bo_gem,
+ I915_MADV_DONTNEED);
drm_intel_gem_cleanup_bo_cache(bufmgr_gem, time);
} else {
drm_intel_gem_bo_free(bo);
@@ -1703,6 +1712,7 @@ drm_intel_bufmgr_gem_init(int fd, int batch_size)
bufmgr_gem->bufmgr.bo_flink = drm_intel_gem_bo_flink;
bufmgr_gem->bufmgr.bo_exec = drm_intel_gem_bo_exec;
bufmgr_gem->bufmgr.bo_busy = drm_intel_gem_bo_busy;
+ bufmgr_gem->bufmgr.bo_madvise = drm_intel_gem_bo_madvise;
bufmgr_gem->bufmgr.destroy = drm_intel_bufmgr_gem_destroy;
bufmgr_gem->bufmgr.debug = 0;
bufmgr_gem->bufmgr.check_aperture_space =
diff --git a/libdrm/intel/intel_bufmgr_priv.h b/libdrm/intel/intel_bufmgr_priv.h
index 475c402f..febee0f7 100644
--- a/libdrm/intel/intel_bufmgr_priv.h
+++ b/libdrm/intel/intel_bufmgr_priv.h
@@ -216,6 +216,20 @@ struct _drm_intel_bufmgr {
*/
int (*bo_busy) (drm_intel_bo *bo);
+ /**
+ * Specify the volatility of the buffer.
+ * \param bo Buffer to create a name for
+ * \param madv The purgeable status
+ *
+ * Use I915_MADV_DONTNEED to mark the buffer as purgeable, and it will be
+ * reclaimed under memory pressure. If you subsequently require the buffer,
+ * then you must pass I915_MADV_WILLNEED to mark the buffer as required.
+ *
+ * Returns 1 if the buffer was retained, or 0 if it was discarded whilst
+ * marked as I915_MADV_DONTNEED.
+ */
+ int (*bo_madvise) (drm_intel_bo *bo, int madv);
+
int (*check_aperture_space) (drm_intel_bo ** bo_array, int count);
/**
--
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