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Date: Fri, 22 Mar 2019 07:15:50 +0300 From: "Dmitry V. Levin" <ldv@...linux.org> To: linux-kernel@...r.kernel.org Cc: Elvira Khabirova <lineprinter@...linux.org>, Eugene Syromyatnikov <esyr@...hat.com>, Paul Burton <paul.burton@...s.com>, Ralf Baechle <ralf@...ux-mips.org>, James Hogan <jhogan@...nel.org>, Oleg Nesterov <oleg@...hat.com>, Andy Lutomirski <luto@...nel.org>, linux-mips@...r.kernel.org Subject: [PATCH linux-next v8 3/7] mips: define syscall_get_error() syscall_get_error() is required to be implemented on all architectures in addition to already implemented syscall_get_nr(), syscall_get_arguments(), syscall_get_return_value(), and syscall_get_arch() functions in order to extend the generic ptrace API with PTRACE_GET_SYSCALL_INFO request. Acked-by: Paul Burton <paul.burton@...s.com> Cc: Elvira Khabirova <lineprinter@...linux.org> Cc: Eugene Syromyatnikov <esyr@...hat.com> Cc: Ralf Baechle <ralf@...ux-mips.org> Cc: James Hogan <jhogan@...nel.org> Cc: Oleg Nesterov <oleg@...hat.com> Cc: Andy Lutomirski <luto@...nel.org> Cc: linux-mips@...r.kernel.org Signed-off-by: Dmitry V. Levin <ldv@...linux.org> --- Notes: v8: unchanged v7: added Acked-by v6: unchanged v5: initial revision arch/mips/include/asm/syscall.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/mips/include/asm/syscall.h b/arch/mips/include/asm/syscall.h index 6a22c9352ef6..466957d0474b 100644 --- a/arch/mips/include/asm/syscall.h +++ b/arch/mips/include/asm/syscall.h @@ -89,6 +89,12 @@ static inline unsigned long mips_get_syscall_arg(unsigned long *arg, unreachable(); } +static inline long syscall_get_error(struct task_struct *task, + struct pt_regs *regs) +{ + return regs->regs[7] ? -regs->regs[2] : 0; +} + static inline long syscall_get_return_value(struct task_struct *task, struct pt_regs *regs) { -- ldv
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