linux-kernel - [PATCH 03/27] mm: remove pointless includes from <linux/hmm.h>

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Date:   Thu, 10 Feb 2022 08:28:04 +0100
From:   Christoph Hellwig <hch@....de>
To:     Andrew Morton <akpm@...ux-foundation.org>,
        Dan Williams <dan.j.williams@...el.com>
Cc:     Felix Kuehling <Felix.Kuehling@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        "Pan, Xinhui" <Xinhui.Pan@....com>,
        Ben Skeggs <bskeggs@...hat.com>,
        Karol Herbst <kherbst@...hat.com>,
        Lyude Paul <lyude@...hat.com>, Jason Gunthorpe <jgg@...pe.ca>,
        Alistair Popple <apopple@...dia.com>,
        Logan Gunthorpe <logang@...tatee.com>,
        Ralph Campbell <rcampbell@...dia.com>,
        linux-kernel@...r.kernel.org, amd-gfx@...ts.freedesktop.org,
        dri-devel@...ts.freedesktop.org, nouveau@...ts.freedesktop.org,
        nvdimm@...ts.linux.dev, linux-mm@...ck.org,
        Jason Gunthorpe <jgg@...dia.com>,
        Chaitanya Kulkarni <kch@...dia.com>
Subject: [PATCH 03/27] mm: remove pointless includes from <linux/hmm.h>

hmm.h pulls in the world for no good reason at all.  Remove the
includes and push a few ones into the users instead.

Signed-off-by: Christoph Hellwig <hch@....de>
Reviewed-by: Logan Gunthorpe <logang@...tatee.com>
Reviewed-by: Jason Gunthorpe <jgg@...dia.com>
Reviewed-by: Chaitanya Kulkarni <kch@...dia.com>
---
 drivers/gpu/drm/amd/amdkfd/kfd_migrate.c | 1 +
 drivers/gpu/drm/nouveau/nouveau_dmem.c   | 1 +
 include/linux/hmm.h                      | 9 ++-------
 lib/test_hmm.c                           | 2 ++
 4 files changed, 6 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c b/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c
index ed5385137f4831..cb835f95a76e66 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c
@@ -24,6 +24,7 @@
 #include <linux/hmm.h>
 #include <linux/dma-direction.h>
 #include <linux/dma-mapping.h>
+#include <linux/migrate.h>
 #include "amdgpu_sync.h"
 #include "amdgpu_object.h"
 #include "amdgpu_vm.h"
diff --git a/drivers/gpu/drm/nouveau/nouveau_dmem.c b/drivers/gpu/drm/nouveau/nouveau_dmem.c
index 3828aafd3ac46f..e886a3b9e08c7d 100644
--- a/drivers/gpu/drm/nouveau/nouveau_dmem.c
+++ b/drivers/gpu/drm/nouveau/nouveau_dmem.c
@@ -39,6 +39,7 @@
 
 #include <linux/sched/mm.h>
 #include <linux/hmm.h>
+#include <linux/migrate.h>
 
 /*
  * FIXME: this is ugly right now we are using TTM to allocate vram and we pin
diff --git a/include/linux/hmm.h b/include/linux/hmm.h
index 2fd2e91d5107c0..d5a6f101f843e6 100644
--- a/include/linux/hmm.h
+++ b/include/linux/hmm.h
@@ -9,14 +9,9 @@
 #ifndef LINUX_HMM_H
 #define LINUX_HMM_H
 
-#include <linux/kconfig.h>
-#include <linux/pgtable.h>
+#include <linux/mm.h>
 
-#include <linux/device.h>
-#include <linux/migrate.h>
-#include <linux/memremap.h>
-#include <linux/completion.h>
-#include <linux/mmu_notifier.h>
+struct mmu_interval_notifier;
 
 /*
  * On output:
diff --git a/lib/test_hmm.c b/lib/test_hmm.c
index 767538089a62e4..396beee6b061d4 100644
--- a/lib/test_hmm.c
+++ b/lib/test_hmm.c
@@ -26,6 +26,8 @@
 #include <linux/sched/mm.h>
 #include <linux/platform_device.h>
 #include <linux/rmap.h>
+#include <linux/mmu_notifier.h>
+#include <linux/migrate.h>
 
 #include "test_hmm_uapi.h"
 
-- 
2.30.2