Commit e5beac37 authored by Russell King's avatar Russell King Committed by Russell King
Browse files

[ARM] do_bad_area() always takes current and current->active_mm 



Since do_bad_area() always takes the currently active task and
(supposed to) take the currently active MM, there's no point passing
them to this function.  Instead, obtain references to them inside
do_bad_area().

Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 80878d6c

arch/arm/mm/alignment.c

+1 −1
Original line number Diff line number Diff line
@@ -735,7 +735,7 @@ do_alignment(unsigned long addr, unsigned int fsr, struct pt_regs *regs) 
	/*

	 * We got a fault - fix it up, or die.

	 */

	do_bad_area(current, current->mm, addr, fsr, regs);

	do_bad_area(addr, fsr, regs);

	return 0;



 swp:

arch/arm/mm/fault.c

+6 −9
Original line number Diff line number Diff line
@@ -131,10 +131,11 @@ __do_user_fault(struct task_struct *tsk, unsigned long addr, 
	force_sig_info(sig, &si, tsk);

}



void

do_bad_area(struct task_struct *tsk, struct mm_struct *mm, unsigned long addr,

	    unsigned int fsr, struct pt_regs *regs)

void do_bad_area(unsigned long addr, unsigned int fsr, struct pt_regs *regs)

{

	struct task_struct *tsk = current;

	struct mm_struct *mm = tsk->active_mm;



	/*

	 * If we are in kernel mode at this point, we

	 * have no context to handle this fault with.
@@ -319,7 +320,6 @@ static int 
do_translation_fault(unsigned long addr, unsigned int fsr,

		     struct pt_regs *regs)

{

	struct task_struct *tsk;

	unsigned int index;

	pgd_t *pgd, *pgd_k;

	pmd_t *pmd, *pmd_k;
@@ -351,9 +351,7 @@ do_translation_fault(unsigned long addr, unsigned int fsr, 
	return 0;



bad_area:

	tsk = current;



	do_bad_area(tsk, tsk->active_mm, addr, fsr, regs);

	do_bad_area(addr, fsr, regs);

	return 0;

}
@@ -364,8 +362,7 @@ bad_area: 
static int

do_sect_fault(unsigned long addr, unsigned int fsr, struct pt_regs *regs)

{

	struct task_struct *tsk = current;

	do_bad_area(tsk, tsk->active_mm, addr, fsr, regs);

	do_bad_area(addr, fsr, regs);

	return 0;

}

arch/arm/mm/fault.h

+1 −4
Original line number Diff line number Diff line 
void do_bad_area(struct task_struct *tsk, struct mm_struct *mm,

		 unsigned long addr, unsigned int fsr, struct pt_regs *regs);



void show_pte(struct mm_struct *mm, unsigned long addr);

void do_bad_area(unsigned long addr, unsigned int fsr, struct pt_regs *regs);



unsigned long search_exception_table(unsigned long addr);

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