diff options
| author | Eric W. Biederman <ebiederm@xmission.com> | 2018-04-19 23:45:54 +0200 |
|---|---|---|
| committer | Eric W. Biederman <ebiederm@xmission.com> | 2018-04-25 17:40:59 +0200 |
| commit | e4d90ee32d63b273358aac68c5e73c102cb68eef (patch) | |
| tree | 0a2cd9743b34b72b9f664cd3b28692e564052580 /arch/alpha/mm/fault.c | |
| parent | signal/alpha: Use send_sig_fault where appropriate (diff) | |
| download | linux-e4d90ee32d63b273358aac68c5e73c102cb68eef.tar.xz linux-e4d90ee32d63b273358aac68c5e73c102cb68eef.zip | |
signal/alpha: 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: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: linux-alpha@vger.kernel.org
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Diffstat (limited to 'arch/alpha/mm/fault.c')
| -rw-r--r-- | arch/alpha/mm/fault.c | 15 |
1 files changed, 2 insertions, 13 deletions
diff --git a/arch/alpha/mm/fault.c b/arch/alpha/mm/fault.c index 7f2202a9f50a..de2bd217adad 100644 --- a/arch/alpha/mm/fault.c +++ b/arch/alpha/mm/fault.c @@ -88,11 +88,8 @@ do_page_fault(unsigned long address, unsigned long mmcsr, struct mm_struct *mm = current->mm; const struct exception_table_entry *fixup; int fault, si_code = SEGV_MAPERR; - siginfo_t info; unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE; - clear_siginfo(&info); - /* As of EV6, a load into $31/$f31 is a prefetch, and never faults (or is suppressed by the PALcode). Support that for older CPUs by ignoring such an instruction. */ @@ -223,21 +220,13 @@ retry: up_read(&mm->mmap_sem); /* 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 __user *) address; - force_sig_info(SIGBUS, &info, current); + force_sig_fault(SIGBUS, BUS_ADRERR, (void __user *) address, 0, current); if (!user_mode(regs)) goto no_context; return; do_sigsegv: - info.si_signo = SIGSEGV; - info.si_errno = 0; - info.si_code = si_code; - info.si_addr = (void __user *) address; - force_sig_info(SIGSEGV, &info, current); + force_sig_fault(SIGSEGV, si_code, (void __user *) address, 0, current); return; #ifdef CONFIG_ALPHA_LARGE_VMALLOC |