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| author | Eric W. Biederman <ebiederm@xmission.com> | 2018-04-16 03:14:10 +0200 |
|---|---|---|
| committer | Eric W. Biederman <ebiederm@xmission.com> | 2018-04-25 17:44:05 +0200 |
| commit | 75bfb9a1c89ae1f28cd09f7ae0d236ebde9b97ec (patch) | |
| tree | 10bf007bd8672c57cd06c890ff1d81078f5b1c7e /arch/openrisc/mm/fault.c | |
| parent | signal/nios2: Use force_sig_fault where appropriate (diff) | |
| download | linux-75bfb9a1c89ae1f28cd09f7ae0d236ebde9b97ec.tar.xz linux-75bfb9a1c89ae1f28cd09f7ae0d236ebde9b97ec.zip | |
signal/openrisc: Use force_sig_fault where appropriate
Filling in struct siginfo before calling force_sig_info a tedious and
error prone process, where once in a great while the wrong fields
are filled out, and siginfo has been inconsistently cleared.
Simplify this process by using the helper force_sig_fault. Which
takes as a parameters all of the information it needs, ensures
all of the fiddly bits of filling in struct siginfo are done properly
and then calls force_sig_info.
In short about a 5 line reduction in code for every time force_sig_info
is called, which makes the calling function clearer.
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
Cc: Stafford Horne <shorne@gmail.com>
Cc: openrisc@lists.librecores.org
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Diffstat (limited to 'arch/openrisc/mm/fault.c')
| -rw-r--r-- | arch/openrisc/mm/fault.c | 19 |
1 files changed, 5 insertions, 14 deletions
diff --git a/arch/openrisc/mm/fault.c b/arch/openrisc/mm/fault.c index 68be33e4ae17..9f011d16cc46 100644 --- a/arch/openrisc/mm/fault.c +++ b/arch/openrisc/mm/fault.c @@ -52,11 +52,10 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long address, struct task_struct *tsk; struct mm_struct *mm; struct vm_area_struct *vma; - siginfo_t info; + int si_code; int fault; unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE; - clear_siginfo(&info); tsk = current; /* @@ -98,7 +97,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long address, } mm = tsk->mm; - info.si_code = SEGV_MAPERR; + si_code = SEGV_MAPERR; /* * If we're in an interrupt or have no user @@ -140,7 +139,7 @@ retry: */ good_area: - info.si_code = SEGV_ACCERR; + si_code = SEGV_ACCERR; /* first do some preliminary protection checks */ @@ -214,11 +213,7 @@ bad_area_nosemaphore: /* User mode accesses just cause a SIGSEGV */ if (user_mode(regs)) { - info.si_signo = SIGSEGV; - info.si_errno = 0; - /* info.si_code has been set above */ - info.si_addr = (void *)address; - force_sig_info(SIGSEGV, &info, tsk); + force_sig_fault(SIGSEGV, si_code, (void __user *)address, tsk); return; } @@ -283,11 +278,7 @@ do_sigbus: * Send a sigbus, regardless of whether we were in kernel * or user mode. */ - info.si_signo = SIGBUS; - info.si_errno = 0; - info.si_code = BUS_ADRERR; - info.si_addr = (void *)address; - force_sig_info(SIGBUS, &info, tsk); + force_sig_fault(SIGBUS, BUS_ADRERR, (void __user *)address, tsk); /* Kernel mode? Handle exceptions or die */ if (!user_mode(regs)) |