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From: Dave Airlie <airlied@gmail.com>
To: dri-devel@lists.freedesktop.org
Subject: [PATCH] [rfc] drm: allow removal of legacy codepaths
Date: Thu, 18 Apr 2019 17:12:08 +1000	[thread overview]
Message-ID: <20190418071208.25672-1-airlied@gmail.com> (raw)

From: Dave Airlie <airlied@redhat.com>

If you don't want the legacy drivers, then lets get rid of all the
legacy codepaths from the core module.

This drop the size of drm.ko for me by about 10%.
 380515    7422    4192  392129   5fbc1 ../../drm-next-build/drivers/gpu/drm/drm.ko
 356059	   7346	   4192	 367597	  59bed	../../drm-next-build/drivers/gpu/drm/drm.ko

This could probably be done with less scattering of ifdefs

Signed-off-by: Dave Airlie <airlied@redhat.com>
---
 drivers/gpu/drm/Makefile        |  6 +++---
 drivers/gpu/drm/drm_auth.c      |  4 ++--
 drivers/gpu/drm/drm_drv.c       | 10 ++++++++++
 drivers/gpu/drm/drm_file.c      | 12 ++++++++----
 drivers/gpu/drm/drm_ioc32.c     | 13 ++++++++++++-
 drivers/gpu/drm/drm_ioctl.c     | 14 ++++++++++----
 drivers/gpu/drm/drm_irq.c       |  2 ++
 drivers/gpu/drm/nouveau/Kconfig |  1 +
 8 files changed, 48 insertions(+), 14 deletions(-)

diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
index 7ebae3d45505..dcd11f623131 100644
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -3,11 +3,10 @@
 # Makefile for the drm device driver.  This driver provides support for the
 # Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher.
 
-drm-y       :=	drm_auth.o drm_bufs.o drm_cache.o \
-		drm_context.o drm_dma.o \
+drm-y       :=	drm_auth.o drm_cache.o \
 		drm_file.o drm_gem.o drm_ioctl.o drm_irq.o \
 		drm_lock.o drm_memory.o drm_drv.o \
-		drm_scatter.o drm_pci.o \
+		drm_pci.o \
 		drm_sysfs.o drm_hashtab.o drm_mm.o \
 		drm_crtc.o drm_fourcc.o drm_modes.o drm_edid.o \
 		drm_encoder_slave.o \
@@ -21,6 +20,7 @@ drm-y       :=	drm_auth.o drm_bufs.o drm_cache.o \
 		drm_syncobj.o drm_lease.o drm_writeback.o drm_client.o \
 		drm_atomic_uapi.o
 
+drm-$(CONFIG_DRM_LEGACY) += drm_bufs.o drm_context.o drm_dma.o drm_scatter.o
 drm-$(CONFIG_DRM_LIB_RANDOM) += lib/drm_random.o
 drm-$(CONFIG_DRM_VM) += drm_vm.o
 drm-$(CONFIG_COMPAT) += drm_ioc32.o
diff --git a/drivers/gpu/drm/drm_auth.c b/drivers/gpu/drm/drm_auth.c
index 1669c42c40ed..a95982bc1e2b 100644
--- a/drivers/gpu/drm/drm_auth.c
+++ b/drivers/gpu/drm/drm_auth.c
@@ -345,9 +345,9 @@ static void drm_master_destroy(struct kref *kref)
 
 	if (dev->driver->master_destroy)
 		dev->driver->master_destroy(dev, master);
-
+#if IS_ENABLED(CONFIG_DRM_LEGACY)
 	drm_legacy_master_rmmaps(dev, master);
-
+#endif
 	idr_destroy(&master->magic_map);
 	idr_destroy(&master->leases);
 	idr_destroy(&master->lessee_idr);
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index 50d849d1bc6e..54371d5a01b8 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -696,7 +696,9 @@ int drm_dev_init(struct drm_device *dev,
 	if (ret)
 		goto err_minors;
 
+#if IS_ENABLED(CONFIG_DRM_LEGACY)
 	drm_legacy_ctxbitmap_init(dev);
+#endif
 
 	if (drm_core_check_feature(dev, DRIVER_GEM)) {
 		ret = drm_gem_init(dev);
@@ -716,7 +718,9 @@ int drm_dev_init(struct drm_device *dev,
 	if (drm_core_check_feature(dev, DRIVER_GEM))
 		drm_gem_destroy(dev);
 err_ctxbitmap:
+#if IS_ENABLED(CONFIG_DRM_LEGACY)
 	drm_legacy_ctxbitmap_cleanup(dev);
+#endif
 	drm_ht_remove(&dev->map_hash);
 err_minors:
 	drm_minor_free(dev, DRM_MINOR_PRIMARY);
@@ -791,7 +795,9 @@ void drm_dev_fini(struct drm_device *dev)
 	if (drm_core_check_feature(dev, DRIVER_GEM))
 		drm_gem_destroy(dev);
 
+#if IS_ENABLED(CONFIG_DRM_LEGACY)
 	drm_legacy_ctxbitmap_cleanup(dev);
+#endif
 	drm_ht_remove(&dev->map_hash);
 	drm_fs_inode_free(dev->anon_inode);
 
@@ -1038,7 +1044,9 @@ EXPORT_SYMBOL(drm_dev_register);
  */
 void drm_dev_unregister(struct drm_device *dev)
 {
+#if IS_ENABLED(CONFIG_DRM_LEGACY)
 	struct drm_map_list *r_list, *list_temp;
+#endif
 
 	if (drm_core_check_feature(dev, DRIVER_LEGACY))
 		drm_lastclose(dev);
@@ -1056,8 +1064,10 @@ void drm_dev_unregister(struct drm_device *dev)
 	if (dev->agp)
 		drm_pci_agp_destroy(dev);
 
+#if IS_ENABLED(CONFIG_DRM_LEGACY)
 	list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head)
 		drm_legacy_rmmap(dev, r_list->map);
+#endif
 
 	remove_compat_control_link(dev);
 	drm_minor_unregister(dev, DRM_MINOR_PRIMARY);
diff --git a/drivers/gpu/drm/drm_file.c b/drivers/gpu/drm/drm_file.c
index 9701469a6e93..9e9064b54b3b 100644
--- a/drivers/gpu/drm/drm_file.c
+++ b/drivers/gpu/drm/drm_file.c
@@ -228,10 +228,10 @@ void drm_file_free(struct drm_file *file)
 
 	if (drm_core_check_feature(dev, DRIVER_LEGACY))
 		drm_legacy_lock_release(dev, file->filp);
-
+#if IS_ENABLED(CONFIG_DMA_LEGACY)
 	if (drm_core_check_feature(dev, DRIVER_HAVE_DMA))
 		drm_legacy_reclaim_buffers(dev, file);
-
+#endif
 	drm_events_release(file);
 
 	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
@@ -245,7 +245,9 @@ void drm_file_free(struct drm_file *file)
 	if (drm_core_check_feature(dev, DRIVER_GEM))
 		drm_gem_release(dev, file);
 
+#if IS_ENABLED(CONFIG_DMA_LEGACY)
 	drm_legacy_ctxbitmap_flush(dev, file);
+#endif
 
 	if (drm_is_primary_client(file))
 		drm_master_release(file);
@@ -284,11 +286,11 @@ static int drm_setup(struct drm_device * dev)
 		if (ret != 0)
 			return ret;
 	}
-
+#if IS_ENABLED(CONFIG_DRM_LEGACY)
 	ret = drm_legacy_dma_setup(dev);
 	if (ret < 0)
 		return ret;
-
+#endif
 
 	DRM_DEBUG("\n");
 	return 0;
@@ -434,9 +436,11 @@ static void drm_legacy_dev_reinit(struct drm_device *dev)
 
 	drm_legacy_agp_clear(dev);
 
+#if IS_ENABLED(CONFIG_DRM_LEGACY)
 	drm_legacy_sg_cleanup(dev);
 	drm_legacy_vma_flush(dev);
 	drm_legacy_dma_takedown(dev);
+#endif
 
 	mutex_unlock(&dev->struct_mutex);
 
diff --git a/drivers/gpu/drm/drm_ioc32.c b/drivers/gpu/drm/drm_ioc32.c
index 0e3043e08c69..374b372da58a 100644
--- a/drivers/gpu/drm/drm_ioc32.c
+++ b/drivers/gpu/drm/drm_ioc32.c
@@ -156,6 +156,7 @@ static int compat_drm_setunique(struct file *file, unsigned int cmd,
 	return -EINVAL;
 }
 
+#if IS_ENABLED(CONFIG_DRM_LEGACY)
 typedef struct drm_map32 {
 	u32 offset;		/* Requested physical address (0 for SAREA) */
 	u32 size;		/* Requested physical size (bytes) */
@@ -239,6 +240,7 @@ static int compat_drm_rmmap(struct file *file, unsigned int cmd,
 	map.handle = compat_ptr(handle);
 	return drm_ioctl_kernel(file, drm_legacy_rmmap_ioctl, &map, DRM_AUTH);
 }
+#endif
 
 typedef struct drm_client32 {
 	int idx;	/* Which client desired? */
@@ -301,6 +303,7 @@ static int compat_drm_getstats(struct file *file, unsigned int cmd,
 	return 0;
 }
 
+#if IS_ENABLED(CONFIG_DRM_LEGACY)
 typedef struct drm_buf_desc32 {
 	int count;		 /* Number of buffers of this size */
 	int size;		 /* Size in bytes */
@@ -604,6 +607,7 @@ static int compat_drm_dma(struct file *file, unsigned int cmd,
 
 	return 0;
 }
+#endif
 
 #if IS_ENABLED(CONFIG_AGP)
 typedef struct drm_agp_mode32 {
@@ -748,6 +752,7 @@ static int compat_drm_agp_unbind(struct file *file, unsigned int cmd,
 }
 #endif /* CONFIG_AGP */
 
+#if IS_ENABLED(CONFIG_DRM_LEGACY)
 typedef struct drm_scatter_gather32 {
 	u32 size;	/**< In bytes -- will round to page boundary */
 	u32 handle;	/**< Used for mapping / unmapping */
@@ -788,7 +793,7 @@ static int compat_drm_sg_free(struct file *file, unsigned int cmd,
 	return drm_ioctl_kernel(file, drm_legacy_sg_free, &request,
 				DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
 }
-
+#endif
 #if defined(CONFIG_X86)
 typedef struct drm_update_draw32 {
 	drm_drawable_t handle;
@@ -903,10 +908,13 @@ static struct {
 #define DRM_IOCTL32_DEF(n, f) [DRM_IOCTL_NR(n##32)] = {.fn = f, .name = #n}
 	DRM_IOCTL32_DEF(DRM_IOCTL_VERSION, compat_drm_version),
 	DRM_IOCTL32_DEF(DRM_IOCTL_GET_UNIQUE, compat_drm_getunique),
+#if IS_ENABLED(CONFIG_DRM_LEGACY)
 	DRM_IOCTL32_DEF(DRM_IOCTL_GET_MAP, compat_drm_getmap),
+#endif
 	DRM_IOCTL32_DEF(DRM_IOCTL_GET_CLIENT, compat_drm_getclient),
 	DRM_IOCTL32_DEF(DRM_IOCTL_GET_STATS, compat_drm_getstats),
 	DRM_IOCTL32_DEF(DRM_IOCTL_SET_UNIQUE, compat_drm_setunique),
+#if IS_ENABLED(CONFIG_DRM_LEGACY)
 	DRM_IOCTL32_DEF(DRM_IOCTL_ADD_MAP, compat_drm_addmap),
 	DRM_IOCTL32_DEF(DRM_IOCTL_ADD_BUFS, compat_drm_addbufs),
 	DRM_IOCTL32_DEF(DRM_IOCTL_MARK_BUFS, compat_drm_markbufs),
@@ -918,6 +926,7 @@ static struct {
 	DRM_IOCTL32_DEF(DRM_IOCTL_GET_SAREA_CTX, compat_drm_getsareactx),
 	DRM_IOCTL32_DEF(DRM_IOCTL_RES_CTX, compat_drm_resctx),
 	DRM_IOCTL32_DEF(DRM_IOCTL_DMA, compat_drm_dma),
+#endif
 #if IS_ENABLED(CONFIG_AGP)
 	DRM_IOCTL32_DEF(DRM_IOCTL_AGP_ENABLE, compat_drm_agp_enable),
 	DRM_IOCTL32_DEF(DRM_IOCTL_AGP_INFO, compat_drm_agp_info),
@@ -926,8 +935,10 @@ static struct {
 	DRM_IOCTL32_DEF(DRM_IOCTL_AGP_BIND, compat_drm_agp_bind),
 	DRM_IOCTL32_DEF(DRM_IOCTL_AGP_UNBIND, compat_drm_agp_unbind),
 #endif
+#if IS_ENABLED(CONFIG_DRM_LEGACY)
 	DRM_IOCTL32_DEF(DRM_IOCTL_SG_ALLOC, compat_drm_sg_alloc),
 	DRM_IOCTL32_DEF(DRM_IOCTL_SG_FREE, compat_drm_sg_free),
+#endif
 #if defined(CONFIG_X86) || defined(CONFIG_IA64)
 	DRM_IOCTL32_DEF(DRM_IOCTL_UPDATE_DRAW, compat_drm_update_draw),
 #endif
diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c
index ce8a70875bd5..7064d98df998 100644
--- a/drivers/gpu/drm/drm_ioctl.c
+++ b/drivers/gpu/drm/drm_ioctl.c
@@ -560,7 +560,9 @@ static const struct drm_ioctl_desc drm_ioctls[] = {
 	DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, DRM_UNLOCKED),
 	DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, DRM_UNLOCKED),
 	DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID, drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY),
+#if IS_ENABLED(CONFIG_DRM_LEGACY)
 	DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_legacy_getmap_ioctl, DRM_UNLOCKED),
+#endif
 	DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, DRM_UNLOCKED),
 	DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, DRM_UNLOCKED),
 	DRM_IOCTL_DEF(DRM_IOCTL_GET_CAP, drm_getcap, DRM_UNLOCKED|DRM_RENDER_ALLOW),
@@ -571,16 +573,16 @@ static const struct drm_ioctl_desc drm_ioctls[] = {
 	DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 	DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 	DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_UNLOCKED|DRM_MASTER),
-
+#if IS_ENABLED(CONFIG_DRM_LEGACY)
 	DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_legacy_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 	DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_legacy_rmmap_ioctl, DRM_AUTH),
 
 	DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_legacy_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 	DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_legacy_getsareactx, DRM_AUTH),
-
+#endif
 	DRM_IOCTL_DEF(DRM_IOCTL_SET_MASTER, drm_setmaster_ioctl, DRM_UNLOCKED|DRM_ROOT_ONLY),
 	DRM_IOCTL_DEF(DRM_IOCTL_DROP_MASTER, drm_dropmaster_ioctl, DRM_UNLOCKED|DRM_ROOT_ONLY),
-
+#if IS_ENABLED(CONFIG_DRM_LEGACY)
 	DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_legacy_addctx, DRM_AUTH|DRM_ROOT_ONLY),
 	DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_legacy_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 	DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
@@ -588,6 +590,7 @@ static const struct drm_ioctl_desc drm_ioctls[] = {
 	DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX, drm_legacy_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 	DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_legacy_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 	DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_legacy_resctx, DRM_AUTH),
+#endif
 
 	DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 	DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
@@ -597,14 +600,15 @@ static const struct drm_ioctl_desc drm_ioctls[] = {
 
 	DRM_IOCTL_DEF(DRM_IOCTL_FINISH, drm_noop, DRM_AUTH),
 
+#if IS_ENABLED(CONFIG_DRM_LEGACY)
 	DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS, drm_legacy_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 	DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS, drm_legacy_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 	DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS, drm_legacy_infobufs, DRM_AUTH),
 	DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS, drm_legacy_mapbufs, DRM_AUTH),
 	DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS, drm_legacy_freebufs, DRM_AUTH),
 	DRM_IOCTL_DEF(DRM_IOCTL_DMA, drm_legacy_dma_ioctl, DRM_AUTH),
-
 	DRM_IOCTL_DEF(DRM_IOCTL_CONTROL, drm_legacy_irq_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
+#endif
 
 #if IS_ENABLED(CONFIG_AGP)
 	DRM_IOCTL_DEF(DRM_IOCTL_AGP_ACQUIRE, drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
@@ -617,8 +621,10 @@ static const struct drm_ioctl_desc drm_ioctls[] = {
 	DRM_IOCTL_DEF(DRM_IOCTL_AGP_UNBIND, drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 #endif
 
+#if IS_ENABLED(CONFIG_DRM_LEGACY)
 	DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_legacy_sg_alloc, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 	DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_legacy_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
+#endif
 
 	DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank_ioctl, DRM_UNLOCKED),
 
diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
index 9bd8908d5fd8..02f38cc9f468 100644
--- a/drivers/gpu/drm/drm_irq.c
+++ b/drivers/gpu/drm/drm_irq.c
@@ -213,6 +213,7 @@ int drm_irq_uninstall(struct drm_device *dev)
 }
 EXPORT_SYMBOL(drm_irq_uninstall);
 
+#if IS_ENABLED(CONFIG_DRM_LEGACY)
 int drm_legacy_irq_control(struct drm_device *dev, void *data,
 			   struct drm_file *file_priv)
 {
@@ -253,3 +254,4 @@ int drm_legacy_irq_control(struct drm_device *dev, void *data,
 		return -EINVAL;
 	}
 }
+#endif
diff --git a/drivers/gpu/drm/nouveau/Kconfig b/drivers/gpu/drm/nouveau/Kconfig
index 688b6f618b65..e3865440839c 100644
--- a/drivers/gpu/drm/nouveau/Kconfig
+++ b/drivers/gpu/drm/nouveau/Kconfig
@@ -23,6 +23,7 @@ config DRM_NOUVEAU
 
 config NOUVEAU_LEGACY_CTX_SUPPORT
 	bool "Nouveau legacy context support"
+	select DRM_LEGACY
 	default y
 	help
 	  There was a version of the nouveau DDX that relied on legacy
-- 
2.20.1

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             reply	other threads:[~2019-04-18  7:12 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-18  7:12 Dave Airlie [this message]
2019-04-18  7:23 ` [PATCH] [rfc] drm: allow removal of legacy codepaths Daniel Vetter

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