The patch titled
Subject: init: provide a generic free_initmem implementation
has been added to the -mm tree. Its filename is
init-provide-a-generic-free_initmem-implementation.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/init-provide-a-generic-free_initmem-implementation.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/init-provide-a-generic-free_initmem-implementation.patch
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*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Mike Rapoport <rppt@xxxxxxxxxxxxx>
Subject: init: provide a generic free_initmem implementation
Patch series "provide a generic free_initmem implementation", v2.
Many architectures implement free_initmem() in exactly the same or very
similar way: they wrap the call to free_initmem_default() with sometimes
different 'poison' parameter.
These patches switch those architectures to use a generic implementation
that does free_initmem_default(POISON_FREE_INITMEM).
This was inspired by Christoph's patches for free_initrd_mem [1] and I
shamelessly copied changelog entries from his patches :)
[1] https://lore.kernel.org/lkml/20190213174621.29297-1-hch@xxxxxx/
This patch (of 2):
For most architectures free_initmem just a wrapper for the same
free_initmem_default(-1) call. Provide that as a generic implementation
marked __weak.
Link: http://lkml.kernel.org/r/1550515285-17446-2-git-send-email-rppt@xxxxxxxxxxxxx
Signed-off-by: Mike Rapoport <rppt@xxxxxxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxx>
Cc: Palmer Dabbelt <palmer@xxxxxxxxxx>
Cc: Richard Kuo <rkuo@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/alpha/mm/init.c | 6 ------
arch/arc/mm/init.c | 8 --------
arch/c6x/mm/init.c | 5 -----
arch/h8300/mm/init.c | 6 ------
arch/microblaze/mm/init.c | 5 -----
arch/nds32/mm/init.c | 5 -----
arch/nios2/mm/init.c | 5 -----
arch/openrisc/mm/init.c | 5 -----
arch/sh/mm/init.c | 5 -----
arch/unicore32/mm/init.c | 5 -----
arch/xtensa/mm/init.c | 5 -----
init/main.c | 5 +++++
12 files changed, 5 insertions(+), 60 deletions(-)
--- a/arch/alpha/mm/init.c~init-provide-a-generic-free_initmem-implementation
+++ a/arch/alpha/mm/init.c
@@ -285,9 +285,3 @@ mem_init(void)
memblock_free_all();
mem_init_print_info(NULL);
}
-
-void
-free_initmem(void)
-{
- free_initmem_default(-1);
-}
--- a/arch/arc/mm/init.c~init-provide-a-generic-free_initmem-implementation
+++ a/arch/arc/mm/init.c
@@ -206,11 +206,3 @@ void __init mem_init(void)
memblock_free_all();
mem_init_print_info(NULL);
}
-
-/*
- * free_initmem: Free all the __init memory.
- */
-void __ref free_initmem(void)
-{
- free_initmem_default(-1);
-}
--- a/arch/c6x/mm/init.c~init-provide-a-generic-free_initmem-implementation
+++ a/arch/c6x/mm/init.c
@@ -68,8 +68,3 @@ void __init mem_init(void)
mem_init_print_info(NULL);
}
-
-void __init free_initmem(void)
-{
- free_initmem_default(-1);
-}
--- a/arch/h8300/mm/init.c~init-provide-a-generic-free_initmem-implementation
+++ a/arch/h8300/mm/init.c
@@ -102,9 +102,3 @@ void __init mem_init(void)
mem_init_print_info(NULL);
}
-
-void
-free_initmem(void)
-{
- free_initmem_default(-1);
-}
--- a/arch/microblaze/mm/init.c~init-provide-a-generic-free_initmem-implementation
+++ a/arch/microblaze/mm/init.c
@@ -186,11 +186,6 @@ void __init setup_memory(void)
paging_init();
}
-void free_initmem(void)
-{
- free_initmem_default(-1);
-}
-
void __init mem_init(void)
{
high_memory = (void *)__va(memory_start + lowmem_size - 1);
--- a/arch/nds32/mm/init.c~init-provide-a-generic-free_initmem-implementation
+++ a/arch/nds32/mm/init.c
@@ -252,11 +252,6 @@ void __init mem_init(void)
return;
}
-void free_initmem(void)
-{
- free_initmem_default(-1);
-}
-
void __set_fixmap(enum fixed_addresses idx,
phys_addr_t phys, pgprot_t flags)
{
--- a/arch/nios2/mm/init.c~init-provide-a-generic-free_initmem-implementation
+++ a/arch/nios2/mm/init.c
@@ -82,11 +82,6 @@ void __init mmu_init(void)
flush_tlb_all();
}
-void __ref free_initmem(void)
-{
- free_initmem_default(-1);
-}
-
#define __page_aligned(order) __aligned(PAGE_SIZE << (order))
pgd_t swapper_pg_dir[PTRS_PER_PGD] __page_aligned(PGD_ORDER);
pte_t invalid_pte_table[PTRS_PER_PTE] __page_aligned(PTE_ORDER);
--- a/arch/openrisc/mm/init.c~init-provide-a-generic-free_initmem-implementation
+++ a/arch/openrisc/mm/init.c
@@ -223,8 +223,3 @@ void __init mem_init(void)
mem_init_done = 1;
return;
}
-
-void free_initmem(void)
-{
- free_initmem_default(-1);
-}
--- a/arch/sh/mm/init.c~init-provide-a-generic-free_initmem-implementation
+++ a/arch/sh/mm/init.c
@@ -403,11 +403,6 @@ void __init mem_init(void)
mem_init_done = 1;
}
-void free_initmem(void)
-{
- free_initmem_default(-1);
-}
-
#ifdef CONFIG_MEMORY_HOTPLUG
int arch_add_memory(int nid, u64 start, u64 size, struct vmem_altmap *altmap,
bool want_memblock)
--- a/arch/unicore32/mm/init.c~init-provide-a-generic-free_initmem-implementation
+++ a/arch/unicore32/mm/init.c
@@ -287,8 +287,3 @@ void __init mem_init(void)
sysctl_overcommit_memory = OVERCOMMIT_ALWAYS;
}
}
-
-void free_initmem(void)
-{
- free_initmem_default(-1);
-}
--- a/arch/xtensa/mm/init.c~init-provide-a-generic-free_initmem-implementation
+++ a/arch/xtensa/mm/init.c
@@ -216,11 +216,6 @@ void free_initrd_mem(unsigned long start
}
#endif
-void free_initmem(void)
-{
- free_initmem_default(-1);
-}
-
static void __init parse_memmap_one(char *p)
{
char *oldp;
--- a/init/main.c~init-provide-a-generic-free_initmem-implementation
+++ a/init/main.c
@@ -1061,6 +1061,11 @@ static inline void mark_readonly(void)
}
#endif
+void __weak free_initmem(void)
+{
+ free_initmem_default(-1);
+}
+
static int __ref kernel_init(void *unused)
{
int ret;
_
Patches currently in -mm which might be from rppt@xxxxxxxxxxxxx are
init-provide-a-generic-free_initmem-implementation.patch
hexagon-switch-over-to-generic-free_initmem.patch
init-free_initmem-poison-freed-init-memory.patch
riscv-switch-over-to-generic-free_initmem.patch
