Messages in this thread Patch in this message | | | Date | Fri, 22 Mar 2019 07:15:50 +0300 | From | "Dmitry V. Levin" <> | Subject | [PATCH linux-next v8 3/7] mips: define syscall_get_error() |
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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@mips.com> Cc: Elvira Khabirova <lineprinter@altlinux.org> Cc: Eugene Syromyatnikov <esyr@redhat.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: linux-mips@vger.kernel.org Signed-off-by: Dmitry V. Levin <ldv@altlinux.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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