mm: remove unneeded includes of <asm/pgalloc.h>

Patch series "mm: cleanup usage of <asm/pgalloc.h>"

Most architectures have very similar versions of pXd_alloc_one() and
pXd_free_one() for intermediate levels of page table.  These patches add
generic versions of these functions in <asm-generic/pgalloc.h> and enable
use of the generic functions where appropriate.

In addition, functions declared and defined in <asm/pgalloc.h> headers are
used mostly by core mm and early mm initialization in arch and there is no
actual reason to have the <asm/pgalloc.h> included all over the place.
The first patch in this series removes unneeded includes of
<asm/pgalloc.h>

In the end it didn't work out as neatly as I hoped and moving
pXd_alloc_track() definitions to <asm-generic/pgalloc.h> would require
unnecessary changes to arches that have custom page table allocations, so
I've decided to move lib/ioremap.c to mm/ and make pgalloc-track.h local
to mm/.

This patch (of 8):

In most cases <asm/pgalloc.h> header is required only for allocations of
page table memory.  Most of the .c files that include that header do not
use symbols declared in <asm/pgalloc.h> and do not require that header.

As for the other header files that used to include <asm/pgalloc.h>, it is
possible to move that include into the .c file that actually uses symbols
from <asm/pgalloc.h> and drop the include from the header file.

The process was somewhat automated using

	sed -i -E '/[<"]asm\/pgalloc\.h/d' \
                $(grep -L -w -f /tmp/xx \
                        $(git grep -E -l '[<"]asm/pgalloc\.h'))

where /tmp/xx contains all the symbols defined in
arch/*/include/asm/pgalloc.h.

[rppt@linux.ibm.com: fix powerpc warning]

Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Pekka Enberg <penberg@kernel.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>	[m68k]
Cc: Abdul Haleem <abdhalee@linux.vnet.ibm.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Matthew Wilcox <willy@infradead.org>
Link: http://lkml.kernel.org/r/20200627143453.31835-1-rppt@kernel.org
Link: http://lkml.kernel.org/r/20200627143453.31835-2-rppt@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 files changed, 1 insertions, 11 deletions

diff --git a/arch/sparc/include/asm/ide.h b/arch/sparc/include/asm/ide.h
index 499aa2e6e276..904cc6cbc155 100644
--- a/arch/sparc/include/asm/ide.h
+++ b/arch/sparc/include/asm/ide.h
@@ -13,7 +13,6 @@
 
 #include <asm/io.h>
 #ifdef CONFIG_SPARC64
-#include <asm/pgalloc.h>
 #include <asm/spitfire.h>
 #include <asm/cacheflush.h>
 #include <asm/page.h>
diff --git a/arch/sparc/include/asm/tlb_64.h b/arch/sparc/include/asm/tlb_64.h
index 6820d357581c..e841cae544c2 100644
--- a/arch/sparc/include/asm/tlb_64.h
+++ b/arch/sparc/include/asm/tlb_64.h
@@ -4,7 +4,6 @@
 
 #include <linux/swap.h>
 #include <linux/pagemap.h>
-#include <asm/pgalloc.h>
 #include <asm/tlbflush.h>
 #include <asm/mmu_context.h>
 
diff --git a/arch/sparc/kernel/leon_smp.c b/arch/sparc/kernel/leon_smp.c
index 41829c024f92..1eed26d423fb 100644
--- a/arch/sparc/kernel/leon_smp.c
+++ b/arch/sparc/kernel/leon_smp.c
@@ -38,7 +38,6 @@
 #include <asm/delay.h>
 #include <asm/irq.h>
 #include <asm/page.h>
-#include <asm/pgalloc.h>
 #include <asm/oplib.h>
 #include <asm/cpudata.h>
 #include <asm/asi.h>
diff --git a/arch/sparc/kernel/process_32.c b/arch/sparc/kernel/process_32.c
index bd123f1de2e7..3f519e1047b6 100644
--- a/arch/sparc/kernel/process_32.c
+++ b/arch/sparc/kernel/process_32.c
@@ -34,7 +34,6 @@
 #include <asm/oplib.h>
 #include <linux/uaccess.h>
 #include <asm/page.h>
-#include <asm/pgalloc.h>
 #include <asm/delay.h>
 #include <asm/processor.h>
 #include <asm/psr.h>
diff --git a/arch/sparc/kernel/signal_32.c b/arch/sparc/kernel/signal_32.c
index 3b005b6c3e0f..f1f8c8ebe641 100644
--- a/arch/sparc/kernel/signal_32.c
+++ b/arch/sparc/kernel/signal_32.c
@@ -23,7 +23,6 @@
 
 #include <linux/uaccess.h>
 #include <asm/ptrace.h>
-#include <asm/pgalloc.h>
 #include <asm/cacheflush.h>	/* flush_sig_insns */
 #include <asm/switch_to.h>
 
diff --git a/arch/sparc/kernel/smp_32.c b/arch/sparc/kernel/smp_32.c
index 76ce290c67cf..50c127ab46d5 100644
--- a/arch/sparc/kernel/smp_32.c
+++ b/arch/sparc/kernel/smp_32.c
@@ -29,7 +29,6 @@
 
 #include <asm/irq.h>
 #include <asm/page.h>
-#include <asm/pgalloc.h>
 #include <asm/oplib.h>
 #include <asm/cacheflush.h>
 #include <asm/tlbflush.h>
diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c
index 0085e28bf019..e286e2badc8a 100644
--- a/arch/sparc/kernel/smp_64.c
+++ b/arch/sparc/kernel/smp_64.c
@@ -47,6 +47,7 @@
 #include <linux/uaccess.h>
 #include <asm/starfire.h>
 #include <asm/tlb.h>
+#include <asm/pgalloc.h>
 #include <asm/sections.h>
 #include <asm/prom.h>
 #include <asm/mdesc.h>
diff --git a/arch/sparc/kernel/sun4m_irq.c b/arch/sparc/kernel/sun4m_irq.c
index 91b61f012d19..1079638986b5 100644
--- a/arch/sparc/kernel/sun4m_irq.c
+++ b/arch/sparc/kernel/sun4m_irq.c
@@ -16,7 +16,6 @@
 
 #include <asm/timer.h>
 #include <asm/traps.h>
-#include <asm/pgalloc.h>
 #include <asm/irq.h>
 #include <asm/io.h>
 #include <asm/cacheflush.h>
diff --git a/arch/sparc/mm/highmem.c b/arch/sparc/mm/highmem.c
index d1fc9a7b7d78..8f2a2afb048a 100644
--- a/arch/sparc/mm/highmem.c
+++ b/arch/sparc/mm/highmem.c
@@ -29,7 +29,6 @@
 
 #include <asm/cacheflush.h>
 #include <asm/tlbflush.h>
-#include <asm/pgalloc.h>
 #include <asm/vaddrs.h>
 
 static pte_t *kmap_pte;
diff --git a/arch/sparc/mm/io-unit.c b/arch/sparc/mm/io-unit.c
index bfcc04bfce54..430a47a1b6ae 100644
--- a/arch/sparc/mm/io-unit.c
+++ b/arch/sparc/mm/io-unit.c
@@ -15,7 +15,6 @@
 #include <linux/of.h>
 #include <linux/of_device.h>
 
-#include <asm/pgalloc.h>
 #include <asm/io.h>
 #include <asm/io-unit.h>
 #include <asm/mxcc.h>
diff --git a/arch/sparc/mm/iommu.c b/arch/sparc/mm/iommu.c
index 35b002eb312e..3a388b1c5d4b 100644
--- a/arch/sparc/mm/iommu.c
+++ b/arch/sparc/mm/iommu.c
@@ -16,7 +16,6 @@
 #include <linux/of.h>
 #include <linux/of_device.h>
 
-#include <asm/pgalloc.h>
 #include <asm/io.h>
 #include <asm/mxcc.h>
 #include <asm/mbus.h>
diff --git a/arch/sparc/mm/tlb.c b/arch/sparc/mm/tlb.c
index a32a16c18617..20ee14739333 100644
--- a/arch/sparc/mm/tlb.c
+++ b/arch/sparc/mm/tlb.c
@@ -10,7 +10,6 @@
 #include <linux/swap.h>
 #include <linux/preempt.h>
 
-#include <asm/pgalloc.h>
 #include <asm/tlbflush.h>
 #include <asm/cacheflush.h>
 #include <asm/mmu_context.h>