* + mm-provide-init_mm-mm_context-initializer.patch added to -mm tree
@ 2010-06-01 21:25 akpm
0 siblings, 0 replies; 2+ messages in thread
From: akpm @ 2010-06-01 21:25 UTC (permalink / raw)
To: mm-commits; +Cc: heiko.carstens, adobriyan, schwidefsky, suzuki
The patch titled
From: Heiko Carstens <heiko.carstens@de.ibm.com>
has been added to the -mm tree. Its filename is
mm-provide-init_mm-mm_context-initializer.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find
out what to do about this
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: From: Heiko Carstens <heiko.carstens@de.ibm.com>
From: Heiko Carstens <heiko.carstens@de.ibm.com>
Provide an INIT_MM_CONTEXT intializer macro which can be used to
statically initialize mm_struct:mm_context of init_mm. This way we
can get rid of code which will do the initialization at run time (on
s390).
In addition the current code can be found at a place where it is not
expected. So let's have a common initializer which architectures
can use if needed.
This is based on a patch from Suzuki Poulose.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Suzuki Poulose <suzuki@in.ibm.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
---
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
arch/s390/include/asm/mmu.h | 5 +++++
arch/s390/mm/vmem.c | 4 ----
mm/init-mm.c | 6 ++++++
3 files changed, 11 insertions(+), 4 deletions(-)
diff -puN arch/s390/include/asm/mmu.h~mm-provide-init_mm-mm_context-initializer arch/s390/include/asm/mmu.h
--- a/arch/s390/include/asm/mmu.h~mm-provide-init_mm-mm_context-initializer
+++ a/arch/s390/include/asm/mmu.h
@@ -13,4 +13,9 @@ typedef struct {
int alloc_pgste; /* cloned contexts will have extended page tables */
} mm_context_t;
+#define INIT_MM_CONTEXT(name) \
+ .context.list_lock = __SPIN_LOCK_UNLOCKED(name.context.list_lock), \
+ .context.crst_list = LIST_HEAD_INIT(name.context.crst_list), \
+ .context.pgtable_list = LIST_HEAD_INIT(name.context.pgtable_list),
+
#endif
diff -puN arch/s390/mm/vmem.c~mm-provide-init_mm-mm_context-initializer arch/s390/mm/vmem.c
--- a/arch/s390/mm/vmem.c~mm-provide-init_mm-mm_context-initializer
+++ a/arch/s390/mm/vmem.c
@@ -332,10 +332,6 @@ void __init vmem_map_init(void)
unsigned long start, end;
int i;
- spin_lock_init(&init_mm.context.list_lock);
- INIT_LIST_HEAD(&init_mm.context.crst_list);
- INIT_LIST_HEAD(&init_mm.context.pgtable_list);
- init_mm.context.noexec = 0;
ro_start = ((unsigned long)&_stext) & PAGE_MASK;
ro_end = PFN_ALIGN((unsigned long)&_eshared);
for (i = 0; i < MEMORY_CHUNKS && memory_chunk[i].size > 0; i++) {
diff -puN mm/init-mm.c~mm-provide-init_mm-mm_context-initializer mm/init-mm.c
--- a/mm/init-mm.c~mm-provide-init_mm-mm_context-initializer
+++ a/mm/init-mm.c
@@ -7,6 +7,11 @@
#include <asm/atomic.h>
#include <asm/pgtable.h>
+#include <asm/mmu.h>
+
+#ifndef INIT_MM_CONTEXT
+#define INIT_MM_CONTEXT(name)
+#endif
struct mm_struct init_mm = {
.mm_rb = RB_ROOT,
@@ -17,4 +22,5 @@ struct mm_struct init_mm = {
.page_table_lock = __SPIN_LOCK_UNLOCKED(init_mm.page_table_lock),
.mmlist = LIST_HEAD_INIT(init_mm.mmlist),
.cpu_vm_mask = CPU_MASK_ALL,
+ INIT_MM_CONTEXT(init_mm)
};
_
Patches currently in -mm which might be from heiko.carstens@de.ibm.com are
origin.patch
fs-compat_rw_copy_check_uvector-add-missing-compat_ptr-call.patch
ramoops-add-has_iomem-dependency.patch
linux-next.patch
drivers-s390-net-use-memdup_user.patch
vfs-introduce-fmode_neg_offset-for-allowing-negative-f_pos.patch
mm-provide-init_mm-mm_context-initializer.patch
^ permalink raw reply [flat|nested] 2+ messages in thread
* + mm-provide-init_mm-mm_context-initializer.patch added to -mm tree
@ 2010-06-01 21:25 akpm
0 siblings, 0 replies; 2+ messages in thread
From: akpm @ 2010-06-01 21:25 UTC (permalink / raw)
To: mm-commits; +Cc: heiko.carstens, adobriyan, schwidefsky, suzuki
The patch titled
mm: provide init_mm mm_context initializer
has been added to the -mm tree. Its filename is
mm-provide-init_mm-mm_context-initializer.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find
out what to do about this
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: mm: provide init_mm mm_context initializer
From: Heiko Carstens <heiko.carstens@de.ibm.com>
Provide an INIT_MM_CONTEXT intializer macro which can be used to
statically initialize mm_struct:mm_context of init_mm. This way we can
get rid of code which will do the initialization at run time (on s390).
In addition the current code can be found at a place where it is not
expected. So let's have a common initializer which architectures
can use if needed.
This is based on a patch from Suzuki Poulose.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Suzuki Poulose <suzuki@in.ibm.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
arch/s390/include/asm/mmu.h | 5 +++++
arch/s390/mm/vmem.c | 4 ----
mm/init-mm.c | 6 ++++++
3 files changed, 11 insertions(+), 4 deletions(-)
diff -puN arch/s390/include/asm/mmu.h~mm-provide-init_mm-mm_context-initializer arch/s390/include/asm/mmu.h
--- a/arch/s390/include/asm/mmu.h~mm-provide-init_mm-mm_context-initializer
+++ a/arch/s390/include/asm/mmu.h
@@ -13,4 +13,9 @@ typedef struct {
int alloc_pgste; /* cloned contexts will have extended page tables */
} mm_context_t;
+#define INIT_MM_CONTEXT(name) \
+ .context.list_lock = __SPIN_LOCK_UNLOCKED(name.context.list_lock), \
+ .context.crst_list = LIST_HEAD_INIT(name.context.crst_list), \
+ .context.pgtable_list = LIST_HEAD_INIT(name.context.pgtable_list),
+
#endif
diff -puN arch/s390/mm/vmem.c~mm-provide-init_mm-mm_context-initializer arch/s390/mm/vmem.c
--- a/arch/s390/mm/vmem.c~mm-provide-init_mm-mm_context-initializer
+++ a/arch/s390/mm/vmem.c
@@ -332,10 +332,6 @@ void __init vmem_map_init(void)
unsigned long start, end;
int i;
- spin_lock_init(&init_mm.context.list_lock);
- INIT_LIST_HEAD(&init_mm.context.crst_list);
- INIT_LIST_HEAD(&init_mm.context.pgtable_list);
- init_mm.context.noexec = 0;
ro_start = ((unsigned long)&_stext) & PAGE_MASK;
ro_end = PFN_ALIGN((unsigned long)&_eshared);
for (i = 0; i < MEMORY_CHUNKS && memory_chunk[i].size > 0; i++) {
diff -puN mm/init-mm.c~mm-provide-init_mm-mm_context-initializer mm/init-mm.c
--- a/mm/init-mm.c~mm-provide-init_mm-mm_context-initializer
+++ a/mm/init-mm.c
@@ -7,6 +7,11 @@
#include <asm/atomic.h>
#include <asm/pgtable.h>
+#include <asm/mmu.h>
+
+#ifndef INIT_MM_CONTEXT
+#define INIT_MM_CONTEXT(name)
+#endif
struct mm_struct init_mm = {
.mm_rb = RB_ROOT,
@@ -17,4 +22,5 @@ struct mm_struct init_mm = {
.page_table_lock = __SPIN_LOCK_UNLOCKED(init_mm.page_table_lock),
.mmlist = LIST_HEAD_INIT(init_mm.mmlist),
.cpu_vm_mask = CPU_MASK_ALL,
+ INIT_MM_CONTEXT(init_mm)
};
_
Patches currently in -mm which might be from heiko.carstens@de.ibm.com are
origin.patch
fs-compat_rw_copy_check_uvector-add-missing-compat_ptr-call.patch
ramoops-add-has_iomem-dependency.patch
linux-next.patch
drivers-s390-net-use-memdup_user.patch
vfs-introduce-fmode_neg_offset-for-allowing-negative-f_pos.patch
mm-provide-init_mm-mm_context-initializer.patch
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