dri-devel Archive on lore.kernel.org
 help / color / Atom feed
From: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
To: "Dan Williams"
	<dan.j.williams-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
	"Jérôme Glisse" <jglisse-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
	"Jason Gunthorpe" <jgg-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>,
	"Ben Skeggs" <bskeggs-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Cc: linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw@public.gmane.org,
	linux-pci-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org,
	linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org,
	nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
Subject: [PATCH 24/25] mm: remove the HMM config option
Date: Wed, 26 Jun 2019 14:27:23 +0200
Message-ID: <20190626122724.13313-25-hch@lst.de> (raw)
In-Reply-To: <20190626122724.13313-1-hch-jcswGhMUV9g@public.gmane.org>

All the mm/hmm.c code is better keyed off HMM_MIRROR.  Also let nouveau
depend on it instead of the mix of a dummy dependency symbol plus the
actually selected one.  Drop various odd dependencies, as the code is
pretty portable.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 drivers/gpu/drm/nouveau/Kconfig |  3 +--
 include/linux/hmm.h             |  5 +----
 include/linux/mm_types.h        |  2 +-
 mm/Kconfig                      | 27 ++++-----------------------
 mm/Makefile                     |  2 +-
 mm/hmm.c                        |  2 --
 6 files changed, 8 insertions(+), 33 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/Kconfig b/drivers/gpu/drm/nouveau/Kconfig
index 6303d203ab1d..66c839d8e9d1 100644
--- a/drivers/gpu/drm/nouveau/Kconfig
+++ b/drivers/gpu/drm/nouveau/Kconfig
@@ -84,11 +84,10 @@ config DRM_NOUVEAU_BACKLIGHT
 
 config DRM_NOUVEAU_SVM
 	bool "(EXPERIMENTAL) Enable SVM (Shared Virtual Memory) support"
-	depends on ARCH_HAS_HMM
 	depends on DEVICE_PRIVATE
 	depends on DRM_NOUVEAU
+	depends on HMM_MIRROR
 	depends on STAGING
-	select HMM_MIRROR
 	default n
 	help
 	  Say Y here if you want to enable experimental support for
diff --git a/include/linux/hmm.h b/include/linux/hmm.h
index 3d00e9550e77..b697496e85ba 100644
--- a/include/linux/hmm.h
+++ b/include/linux/hmm.h
@@ -62,7 +62,7 @@
 #include <linux/kconfig.h>
 #include <asm/pgtable.h>
 
-#if IS_ENABLED(CONFIG_HMM)
+#ifdef CONFIG_HMM_MIRROR
 
 #include <linux/device.h>
 #include <linux/migrate.h>
@@ -332,9 +332,6 @@ static inline uint64_t hmm_pfn_from_pfn(const struct hmm_range *range,
 	return hmm_device_entry_from_pfn(range, pfn);
 }
 
-
-
-#if IS_ENABLED(CONFIG_HMM_MIRROR)
 /*
  * Mirroring: how to synchronize device page table with CPU page table.
  *
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index f33a1289c101..8d37182f8dbe 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -501,7 +501,7 @@ struct mm_struct {
 #endif
 		struct work_struct async_put_work;
 
-#if IS_ENABLED(CONFIG_HMM)
+#ifdef CONFIG_HMM_MIRROR
 		/* HMM needs to track a few things per mm */
 		struct hmm *hmm;
 #endif
diff --git a/mm/Kconfig b/mm/Kconfig
index eecf037a54b3..1e426c26b1d6 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -669,37 +669,18 @@ config ZONE_DEVICE
 
 	  If FS_DAX is enabled, then say Y.
 
-config ARCH_HAS_HMM_MIRROR
-	bool
-	default y
-	depends on (X86_64 || PPC64)
-	depends on MMU && 64BIT
-
-config ARCH_HAS_HMM
-	bool
-	depends on (X86_64 || PPC64)
-	depends on ZONE_DEVICE
-	depends on MMU && 64BIT
-	depends on MEMORY_HOTPLUG
-	depends on MEMORY_HOTREMOVE
-	depends on SPARSEMEM_VMEMMAP
-	default y
-
 config MIGRATE_VMA_HELPER
 	bool
 
 config DEV_PAGEMAP_OPS
 	bool
 
-config HMM
-	bool
-	select MMU_NOTIFIER
-	select MIGRATE_VMA_HELPER
-
 config HMM_MIRROR
 	bool "HMM mirror CPU page table into a device page table"
-	depends on ARCH_HAS_HMM
-	select HMM
+	depends on (X86_64 || PPC64)
+	depends on MMU && 64BIT
+	select MMU_NOTIFIER
+	select MIGRATE_VMA_HELPER
 	help
 	  Select HMM_MIRROR if you want to mirror range of the CPU page table of a
 	  process into a device page table. Here, mirror means "keep synchronized".
diff --git a/mm/Makefile b/mm/Makefile
index ac5e5ba78874..91c99040065c 100644
--- a/mm/Makefile
+++ b/mm/Makefile
@@ -102,5 +102,5 @@ obj-$(CONFIG_FRAME_VECTOR) += frame_vector.o
 obj-$(CONFIG_DEBUG_PAGE_REF) += debug_page_ref.o
 obj-$(CONFIG_HARDENED_USERCOPY) += usercopy.o
 obj-$(CONFIG_PERCPU_STATS) += percpu-stats.o
-obj-$(CONFIG_HMM) += hmm.o
+obj-$(CONFIG_HMM_MIRROR) += hmm.o
 obj-$(CONFIG_MEMFD_CREATE) += memfd.o
diff --git a/mm/hmm.c b/mm/hmm.c
index 90ca0cdab9db..d62ce64d6bca 100644
--- a/mm/hmm.c
+++ b/mm/hmm.c
@@ -25,7 +25,6 @@
 #include <linux/mmu_notifier.h>
 #include <linux/memory_hotplug.h>
 
-#if IS_ENABLED(CONFIG_HMM_MIRROR)
 static const struct mmu_notifier_ops hmm_mmu_notifier_ops;
 
 static inline struct hmm *mm_get_hmm(struct mm_struct *mm)
@@ -1326,4 +1325,3 @@ long hmm_range_dma_unmap(struct hmm_range *range,
 	return cpages;
 }
 EXPORT_SYMBOL(hmm_range_dma_unmap);
-#endif /* IS_ENABLED(CONFIG_HMM_MIRROR) */
-- 
2.20.1

_______________________________________________
Nouveau mailing list
Nouveau@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/nouveau

  parent reply index

Thread overview: 60+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-26 12:26 dev_pagemap related cleanups v3 Christoph Hellwig
2019-06-26 12:27 ` [PATCH 01/25] mm: remove the unused ARCH_HAS_HMM_DEVICE Kconfig option Christoph Hellwig
2019-06-26 12:27 ` [PATCH 03/25] mm: remove hmm_devmem_add_resource Christoph Hellwig
2019-06-27 16:18   ` Jason Gunthorpe
     [not found]     ` <20190627161813.GB9499-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2019-06-27 16:54       ` Christoph Hellwig
2019-06-26 12:27 ` [PATCH 09/25] memremap: move dev_pagemap callbacks into a separate structure Christoph Hellwig
     [not found] ` <20190626122724.13313-1-hch-jcswGhMUV9g@public.gmane.org>
2019-06-26 12:27   ` [PATCH 02/25] mm: remove the struct hmm_device infrastructure Christoph Hellwig
2019-06-26 12:27   ` [PATCH 04/25] mm: remove MEMORY_DEVICE_PUBLIC support Christoph Hellwig
2019-06-26 16:00     ` Dan Williams
     [not found]       ` <CAPcyv4gTOf+EWzSGrFrh2GrTZt5HVR=e+xicUKEpiy57px8J+w-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2019-06-26 17:14         ` Ira Weiny
     [not found]           ` <20190626171445.GA4605-J5EW/p2F9lUlb2qzJQmr9q2pdiUAq4bhAL8bYrjMMd8@public.gmane.org>
2019-06-26 18:49             ` Ira Weiny
2019-06-26 12:27   ` [PATCH 05/25] mm: don't clear ->mapping in hmm_devmem_free Christoph Hellwig
2019-06-26 12:27   ` [PATCH 06/25] mm: export alloc_pages_vma Christoph Hellwig
2019-06-26 12:36     ` Michal Hocko
2019-06-26 12:27   ` [PATCH 07/25] mm: factor out a devm_request_free_mem_region helper Christoph Hellwig
2019-06-26 12:27   ` [PATCH 08/25] memremap: validate the pagemap type passed to devm_memremap_pages Christoph Hellwig
     [not found]     ` <20190626122724.13313-9-hch-jcswGhMUV9g@public.gmane.org>
2019-06-26 18:01       ` Ira Weiny
2019-06-26 12:27   ` [PATCH 10/25] memremap: pass a struct dev_pagemap to ->kill and ->cleanup Christoph Hellwig
2019-06-26 12:27   ` [PATCH 11/25] memremap: lift the devmap_enable manipulation into devm_memremap_pages Christoph Hellwig
     [not found]     ` <20190626122724.13313-12-hch-jcswGhMUV9g@public.gmane.org>
2019-06-26 19:04       ` Ira Weiny
2019-06-27  8:50         ` Christoph Hellwig
2019-06-26 12:27   ` [PATCH 12/25] memremap: add a migrate_to_ram method to struct dev_pagemap_ops Christoph Hellwig
     [not found]     ` <20190626122724.13313-13-hch-jcswGhMUV9g@public.gmane.org>
2019-06-27 16:29       ` Jason Gunthorpe
     [not found]         ` <20190627162439.GD9499-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2019-06-27 16:53           ` Christoph Hellwig
2019-06-26 12:27   ` [PATCH 13/25] memremap: remove the data field in struct dev_pagemap Christoph Hellwig
2019-06-26 12:27   ` [PATCH 14/25] memremap: replace the altmap_valid field with a PGMAP_ALTMAP_VALID flag Christoph Hellwig
2019-06-26 21:13     ` Ira Weiny
2019-06-26 12:27   ` [PATCH 15/25] memremap: provide an optional internal refcount in struct dev_pagemap Christoph Hellwig
2019-06-26 21:47     ` Ira Weiny
     [not found]       ` <20190626214750.GC8399-J5EW/p2F9lUlb2qzJQmr9q2pdiUAq4bhAL8bYrjMMd8@public.gmane.org>
2019-06-27  8:51         ` Christoph Hellwig
2019-06-26 12:27   ` [PATCH 16/25] device-dax: use the dev_pagemap internal refcount Christoph Hellwig
     [not found]     ` <20190626122724.13313-17-hch-jcswGhMUV9g@public.gmane.org>
2019-06-26 21:48       ` Ira Weiny
2019-06-28 15:38     ` Jason Gunthorpe
2019-06-28 16:27       ` Dan Williams
     [not found]         ` <CAPcyv4joSiFMeYq=D08C-QZSkHz0kRpvRfseNQWrN34Rrm+S7g-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2019-06-28 17:02           ` Jason Gunthorpe
2019-06-28 17:08             ` Dan Williams
     [not found]               ` <CAPcyv4ja9DVL2zuxuSup8x3VOT_dKAOS8uBQweE9R81vnYRNWg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2019-06-28 17:10                 ` Dan Williams
     [not found]                   ` <CAPcyv4iWTe=vOXUqkr_CguFrFRqgA7hJSt4J0B3RpuP-Okz0Vw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2019-06-28 18:29                     ` Jason Gunthorpe
2019-06-28 18:44                       ` Dan Williams
2019-06-28 18:51                         ` Christoph Hellwig
2019-06-28 18:59                           ` Dan Williams
2019-06-28 19:02                             ` Christoph Hellwig
     [not found]                               ` <20190628190207.GA9317-jcswGhMUV9g@public.gmane.org>
2019-06-28 19:14                                 ` Dan Williams
2019-07-02 22:35                                   ` Andrew Morton
2019-06-26 12:27   ` [PATCH 17/25] PCI/P2PDMA: " Christoph Hellwig
     [not found]     ` <20190626122724.13313-18-hch-jcswGhMUV9g@public.gmane.org>
2019-06-26 21:49       ` Ira Weiny
2019-06-27 18:49     ` Logan Gunthorpe
2019-06-26 12:27   ` [PATCH 18/25] nouveau: use alloc_page_vma directly Christoph Hellwig
2019-06-26 12:27   ` [PATCH 19/25] nouveau: use devm_memremap_pages directly Christoph Hellwig
2019-06-26 12:27   ` [PATCH 20/25] mm: remove hmm_vma_alloc_locked_page Christoph Hellwig
2019-06-27 16:26     ` Jason Gunthorpe
2019-06-26 12:27   ` [PATCH 22/25] mm: simplify ZONE_DEVICE page private data Christoph Hellwig
2019-06-26 12:27   ` [PATCH 23/25] mm: sort out the DEVICE_PRIVATE Kconfig mess Christoph Hellwig
2019-06-26 21:36     ` Ira Weiny
2019-06-26 12:27   ` Christoph Hellwig [this message]
     [not found]     ` <20190626122724.13313-25-hch-jcswGhMUV9g@public.gmane.org>
2019-06-26 21:38       ` [PATCH 24/25] mm: remove the HMM config option Ira Weiny
2019-06-27 16:29     ` Jason Gunthorpe
2019-06-26 12:27   ` [PATCH 25/25] mm: don't select MIGRATE_VMA_HELPER from HMM_MIRROR Christoph Hellwig
2019-06-26 12:27 ` [PATCH 21/25] mm: remove hmm_devmem_add Christoph Hellwig
  -- strict thread matches above, loose matches on Subject: below --
2019-06-17 12:27 dev_pagemap related cleanups v2 Christoph Hellwig
     [not found] ` <20190617122733.22432-1-hch-jcswGhMUV9g@public.gmane.org>
2019-06-17 12:27   ` [PATCH 24/25] mm: remove the HMM config option Christoph Hellwig

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20190626122724.13313-25-hch@lst.de \
    --to=hch-jcswghmuv9g@public.gmane.org \
    --cc=bskeggs-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org \
    --cc=dan.j.williams-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org \
    --cc=dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org \
    --cc=jgg-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org \
    --cc=jglisse-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org \
    --cc=linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
    --cc=linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org \
    --cc=linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw@public.gmane.org \
    --cc=linux-pci-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
    --cc=nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

dri-devel Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/dri-devel/0 dri-devel/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 dri-devel dri-devel/ https://lore.kernel.org/dri-devel \
		dri-devel@lists.freedesktop.org
	public-inbox-index dri-devel

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.freedesktop.lists.dri-devel


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git