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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2011-08-11 15:31:31 +0200
committerClark Williams <williams@redhat.com>2012-01-16 13:00:07 -0600
commit9cf1b8ed0c9c174bfebd3eed9e4951b0dcda922b (patch)
tree767fa9deb26f85d57ada2db6a37cbcf5303081a6 /arch
parent4ce1b8e52c839536accc1b0ad862cc389471a49e (diff)
mm: pagefault_disabled()
Wrap the test for pagefault_disabled() into a helper, this allows us to remove the need for current->pagefault_disabled on !-rt kernels. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/n/tip-3yy517m8zsi9fpsf14xfaqkw@git.kernel.org
Diffstat (limited to 'arch')
-rw-r--r--arch/alpha/mm/fault.c2
-rw-r--r--arch/arm/mm/fault.c2
-rw-r--r--arch/avr32/mm/fault.c3
-rw-r--r--arch/cris/mm/fault.c2
-rw-r--r--arch/frv/mm/fault.c2
-rw-r--r--arch/ia64/mm/fault.c2
-rw-r--r--arch/m32r/mm/fault.c2
-rw-r--r--arch/m68k/mm/fault.c2
-rw-r--r--arch/microblaze/mm/fault.c2
-rw-r--r--arch/mips/mm/fault.c2
-rw-r--r--arch/mn10300/mm/fault.c2
-rw-r--r--arch/parisc/mm/fault.c2
-rw-r--r--arch/powerpc/mm/fault.c2
-rw-r--r--arch/s390/mm/fault.c8
-rw-r--r--arch/score/mm/fault.c2
-rw-r--r--arch/sh/mm/fault_32.c2
-rw-r--r--arch/sparc/mm/fault_32.c2
-rw-r--r--arch/sparc/mm/fault_64.c2
-rw-r--r--arch/tile/mm/fault.c2
-rw-r--r--arch/um/kernel/trap.c2
-rw-r--r--arch/x86/mm/fault.c2
-rw-r--r--arch/xtensa/mm/fault.c2
22 files changed, 25 insertions, 26 deletions
diff --git a/arch/alpha/mm/fault.c b/arch/alpha/mm/fault.c
index 6d73e1bbf8c2..4a0a0aff8fd0 100644
--- a/arch/alpha/mm/fault.c
+++ b/arch/alpha/mm/fault.c
@@ -107,7 +107,7 @@ do_page_fault(unsigned long address, unsigned long mmcsr,
/* If we're in an interrupt context, or have no user context,
we must not take the fault. */
- if (!mm || in_atomic() || current->pagefault_disabled)
+ if (!mm || pagefault_disabled())
goto no_context;
#ifdef CONFIG_ALPHA_LARGE_VMALLOC
diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c
index c8dd303f0af8..d717bd361a7b 100644
--- a/arch/arm/mm/fault.c
+++ b/arch/arm/mm/fault.c
@@ -294,7 +294,7 @@ do_page_fault(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
* If we're in an interrupt or have no user
* context, we must not take the fault..
*/
- if (in_atomic() || !mm || current->pagefault_disabled)
+ if (!mm || pagefault_disabled())
goto no_context;
/*
diff --git a/arch/avr32/mm/fault.c b/arch/avr32/mm/fault.c
index 623a027a6926..155ad8daecf9 100644
--- a/arch/avr32/mm/fault.c
+++ b/arch/avr32/mm/fault.c
@@ -81,8 +81,7 @@ asmlinkage void do_page_fault(unsigned long ecr, struct pt_regs *regs)
* If we're in an interrupt or have no user context, we must
* not take the fault...
*/
- if (in_atomic() || !mm || regs->sr & SYSREG_BIT(GM) ||
- current->pagefault_disabled)
+ if (!mm || regs->sr & SYSREG_BIT(GM) || pagefault_disabled())
goto no_context;
local_irq_enable();
diff --git a/arch/cris/mm/fault.c b/arch/cris/mm/fault.c
index 2b2c2929ebab..ba9cfbe818f1 100644
--- a/arch/cris/mm/fault.c
+++ b/arch/cris/mm/fault.c
@@ -111,7 +111,7 @@ do_page_fault(unsigned long address, struct pt_regs *regs,
* user context, we must not take the fault.
*/
- if (in_atomic() || !mm || current->pagefault_disabled)
+ if (!mm || pagefault_disabled())
goto no_context;
down_read(&mm->mmap_sem);
diff --git a/arch/frv/mm/fault.c b/arch/frv/mm/fault.c
index 3da8ec76a0aa..a9ce0f056565 100644
--- a/arch/frv/mm/fault.c
+++ b/arch/frv/mm/fault.c
@@ -79,7 +79,7 @@ asmlinkage void do_page_fault(int datammu, unsigned long esr0, unsigned long ear
* If we're in an interrupt or have no user
* context, we must not take the fault..
*/
- if (in_atomic() || !mm || current->pagefault_disabled)
+ if (!mm || pagefault_disabled())
goto no_context;
down_read(&mm->mmap_sem);
diff --git a/arch/ia64/mm/fault.c b/arch/ia64/mm/fault.c
index 2a4e44f68cd8..05946c2933e1 100644
--- a/arch/ia64/mm/fault.c
+++ b/arch/ia64/mm/fault.c
@@ -89,7 +89,7 @@ ia64_do_page_fault (unsigned long address, unsigned long isr, struct pt_regs *re
/*
* If we're in an interrupt or have no user context, we must not take the fault..
*/
- if (in_atomic() || !mm || current->pagefault_disabled)
+ if (!mm || pagefault_disabled())
goto no_context;
#ifdef CONFIG_VIRTUAL_MEM_MAP
diff --git a/arch/m32r/mm/fault.c b/arch/m32r/mm/fault.c
index 16fa2c7f01f3..6d763f64f48c 100644
--- a/arch/m32r/mm/fault.c
+++ b/arch/m32r/mm/fault.c
@@ -115,7 +115,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long error_code,
* If we're in an interrupt or have no user context or are running in an
* atomic region then we must not take the fault..
*/
- if (in_atomic() || !mm || current->pagefault_disabled)
+ if (!mm || pagefault_disabled())
goto bad_area_nosemaphore;
/* When running in the kernel we expect faults to occur only to
diff --git a/arch/m68k/mm/fault.c b/arch/m68k/mm/fault.c
index 238ffc093658..74fe5593abbb 100644
--- a/arch/m68k/mm/fault.c
+++ b/arch/m68k/mm/fault.c
@@ -85,7 +85,7 @@ int do_page_fault(struct pt_regs *regs, unsigned long address,
* If we're in an interrupt or have no user
* context, we must not take the fault..
*/
- if (in_atomic() || !mm || current->pagefault_disabled)
+ if (!mm || pagefault_disabled())
goto no_context;
down_read(&mm->mmap_sem);
diff --git a/arch/microblaze/mm/fault.c b/arch/microblaze/mm/fault.c
index c3f219c29525..4cdd84db9c4d 100644
--- a/arch/microblaze/mm/fault.c
+++ b/arch/microblaze/mm/fault.c
@@ -107,7 +107,7 @@ void do_page_fault(struct pt_regs *regs, unsigned long address,
if ((error_code & 0x13) == 0x13 || (error_code & 0x11) == 0x11)
is_write = 0;
- if (unlikely(in_atomic() || !mm || current->pagefault_disabled)) {
+ if (unlikely(!mm || pagefault_disabled())) {
if (kernel_mode(regs))
goto bad_area_nosemaphore;
diff --git a/arch/mips/mm/fault.c b/arch/mips/mm/fault.c
index ce7e75eeb381..7ade72b93f3e 100644
--- a/arch/mips/mm/fault.c
+++ b/arch/mips/mm/fault.c
@@ -88,7 +88,7 @@ asmlinkage void __kprobes do_page_fault(struct pt_regs *regs, unsigned long writ
* If we're in an interrupt or have no user
* context, we must not take the fault..
*/
- if (in_atomic() || !mm || current->pagefault_disabled)
+ if (!mm || pagefault_disabled())
goto bad_area_nosemaphore;
down_read(&mm->mmap_sem);
diff --git a/arch/mn10300/mm/fault.c b/arch/mn10300/mm/fault.c
index 53c8d161cec0..2fea01cbb27f 100644
--- a/arch/mn10300/mm/fault.c
+++ b/arch/mn10300/mm/fault.c
@@ -168,7 +168,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long fault_code,
* If we're in an interrupt or have no user
* context, we must not take the fault..
*/
- if (in_atomic() || !mm || current->pagefault_disabled)
+ if (!mm || pagefault_disabled())
goto no_context;
down_read(&mm->mmap_sem);
diff --git a/arch/parisc/mm/fault.c b/arch/parisc/mm/fault.c
index 09ecc8a77407..df22f39fb545 100644
--- a/arch/parisc/mm/fault.c
+++ b/arch/parisc/mm/fault.c
@@ -176,7 +176,7 @@ void do_page_fault(struct pt_regs *regs, unsigned long code,
unsigned long acc_type;
int fault;
- if (in_atomic() || !mm || current->pagefault_disabled)
+ if (!mm || pagefault_disabled())
goto no_context;
down_read(&mm->mmap_sem);
diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c
index 17f8bbeab50f..94bedd4032aa 100644
--- a/arch/powerpc/mm/fault.c
+++ b/arch/powerpc/mm/fault.c
@@ -162,7 +162,7 @@ int __kprobes do_page_fault(struct pt_regs *regs, unsigned long address,
}
#endif
- if (in_atomic() || mm == NULL || current->pagefault_disabled) {
+ if (!mm || pagefault_disabled()) {
if (!user_mode(regs))
return SIGSEGV;
/* in_atomic() in user mode is really bad,
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index c57268b14b8f..1d345e85d9ce 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -295,8 +295,8 @@ static inline int do_exception(struct pt_regs *regs, int access,
* user context.
*/
fault = VM_FAULT_BADCONTEXT;
- if (unlikely(!user_space_fault(trans_exc_code) || in_atomic() || !mm ||
- tsk->pagefault_disabled))
+ if (unlikely(!user_space_fault(trans_exc_code) ||
+ !mm || pagefault_disabled()))
goto out;
address = trans_exc_code & __FAIL_ADDR_MASK;
@@ -427,8 +427,8 @@ void __kprobes do_asce_exception(struct pt_regs *regs, long pgm_int_code,
struct mm_struct *mm = current->mm;
struct vm_area_struct *vma;
- if (unlikely(!user_space_fault(trans_exc_code) || in_atomic() || !mm ||
- current->pagefault_disabled))
+ if (unlikely(!user_space_fault(trans_exc_code) ||
+ !mm || pagefault_disabled()))
goto no_context;
down_read(&mm->mmap_sem);
diff --git a/arch/score/mm/fault.c b/arch/score/mm/fault.c
index 4c128245fa2d..59fccbe9777b 100644
--- a/arch/score/mm/fault.c
+++ b/arch/score/mm/fault.c
@@ -72,7 +72,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long write,
* If we're in an interrupt or have no user
* context, we must not take the fault..
*/
- if (in_atomic() || !mm || current->pagefault_disabled)
+ if (!mm || pagefault_disabled())
goto bad_area_nosemaphore;
down_read(&mm->mmap_sem);
diff --git a/arch/sh/mm/fault_32.c b/arch/sh/mm/fault_32.c
index a67ac56a8454..643670db6664 100644
--- a/arch/sh/mm/fault_32.c
+++ b/arch/sh/mm/fault_32.c
@@ -166,7 +166,7 @@ asmlinkage void __kprobes do_page_fault(struct pt_regs *regs,
* If we're in an interrupt, have no user context or are running
* in an atomic region then we must not take the fault:
*/
- if (in_atomic() || !mm || current->pagefault_disabled)
+ if (!mm || pagefault_disabled())
goto no_context;
down_read(&mm->mmap_sem);
diff --git a/arch/sparc/mm/fault_32.c b/arch/sparc/mm/fault_32.c
index e0742c12d1fd..054cf56ce057 100644
--- a/arch/sparc/mm/fault_32.c
+++ b/arch/sparc/mm/fault_32.c
@@ -247,7 +247,7 @@ asmlinkage void do_sparc_fault(struct pt_regs *regs, int text_fault, int write,
* If we're in an interrupt or have no user
* context, we must not take the fault..
*/
- if (in_atomic() || !mm || current->pagefault_disabled)
+ if (!mm || pagefault_disabled())
goto no_context;
perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, address);
diff --git a/arch/sparc/mm/fault_64.c b/arch/sparc/mm/fault_64.c
index 9d691a5ca014..f6572f87d07e 100644
--- a/arch/sparc/mm/fault_64.c
+++ b/arch/sparc/mm/fault_64.c
@@ -322,7 +322,7 @@ asmlinkage void __kprobes do_sparc64_fault(struct pt_regs *regs)
* If we're in an interrupt or have no user
* context, we must not take the fault..
*/
- if (in_atomic() || !mm || current->pagefault_enabled)
+ if (!mm || pagefault_disabled())
goto intr_or_no_mm;
perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, address);
diff --git a/arch/tile/mm/fault.c b/arch/tile/mm/fault.c
index ecdb0160e983..1b6fa511010d 100644
--- a/arch/tile/mm/fault.c
+++ b/arch/tile/mm/fault.c
@@ -346,7 +346,7 @@ static int handle_page_fault(struct pt_regs *regs,
* If we're in an interrupt, have no user context or are running in an
* atomic region then we must not take the fault.
*/
- if (in_atomic() || !mm || current->pagefault_disabled) {
+ if (!mm || pagefault_disabled()) {
vma = NULL; /* happy compiler */
goto bad_area_nosemaphore;
}
diff --git a/arch/um/kernel/trap.c b/arch/um/kernel/trap.c
index a28340023e13..78780693eb6d 100644
--- a/arch/um/kernel/trap.c
+++ b/arch/um/kernel/trap.c
@@ -37,7 +37,7 @@ int handle_page_fault(unsigned long address, unsigned long ip,
* If the fault was during atomic operation, don't take the fault, just
* fail.
*/
- if (in_atomic() || !mm || current->pagefault_disabled)
+ if (!mm || pagefault_disabled())
goto out_nosemaphore;
down_read(&mm->mmap_sem);
diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
index 191015fd836b..b567837c8374 100644
--- a/arch/x86/mm/fault.c
+++ b/arch/x86/mm/fault.c
@@ -1084,7 +1084,7 @@ do_page_fault(struct pt_regs *regs, unsigned long error_code)
* If we're in an interrupt, have no user context or are running
* in an atomic region then we must not take the fault:
*/
- if (unlikely(in_atomic() || !mm || current->pagefault_disabled)) {
+ if (unlikely(!mm || pagefault_disabled())) {
bad_area_nosemaphore(regs, error_code, address);
return;
}
diff --git a/arch/xtensa/mm/fault.c b/arch/xtensa/mm/fault.c
index 705f48348835..8f3f52a7d82e 100644
--- a/arch/xtensa/mm/fault.c
+++ b/arch/xtensa/mm/fault.c
@@ -57,7 +57,7 @@ void do_page_fault(struct pt_regs *regs)
/* If we're in an interrupt or have no user
* context, we must not take the fault..
*/
- if (in_atomic() || !mm || current->pagefault_disabled) {
+ if (!mm || pagefault_disabled()) {
bad_page_fault(regs, address, SIGSEGV);
return;
}