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signal/riscv: Use force_sig_fault where appropriate

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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: Palmer Dabbelt <palmer@sifive.com>
Cc: Albert Ou <albert@sifive.com>
Cc: linux-riscv@lists.infradead.org
Acked-by: Palmer Dabbelt <palmer@sifive.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
This commit is contained in:
Eric W. Biederman 2018-04-16 11:30:22 -05:00
parent ccf75290cc
commit 4d6a20b135
1 changed files with 1 additions and 8 deletions
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9
arch/riscv/kernel/traps.c
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@ -66,14 +66,7 @@ void die(struct pt_regs *regs, const char *str)
static inline void do_trap_siginfo(int signo, int code,
unsigned long addr, struct task_struct *tsk)
{
siginfo_t info;
clear_siginfo(&info);
info.si_signo = signo;
info.si_errno = 0;
info.si_code = code;
info.si_addr = (void __user *)addr;
force_sig_info(signo, &info, tsk);
force_sig_fault(signo, code, (void __user *)addr, tsk);
}
void do_trap(struct pt_regs *regs, int signo, int code,