[PATCH v7 15/22] parisc: define syscall_get_error()

From: Dmitry V. Levin
Date: Sun Jan 06 2019 - 21:54:20 EST

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.

Cc: James E.J. Bottomley <jejb@xxxxxxxxxxxxxxxx>
Cc: Helge Deller <deller@xxxxxx>
Cc: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Andy Lutomirski <luto@xxxxxxxxxx>
Cc: Elvira Khabirova <lineprinter@xxxxxxxxxxxx>
Cc: Eugene Syromyatnikov <esyr@xxxxxxxxxx>
Cc: linux-parisc@xxxxxxxxxxxxxxx
Signed-off-by: Dmitry V. Levin <ldv@xxxxxxxxxxxx>

v7: unchanged
v6: unchanged
v5: initial revision

arch/parisc/include/asm/syscall.h | 7 +++++++
1 file changed, 7 insertions(+)

diff --git a/arch/parisc/include/asm/syscall.h b/arch/parisc/include/asm/syscall.h
index 8bff1a58c97f..477511ff7546 100644
--- a/arch/parisc/include/asm/syscall.h
+++ b/arch/parisc/include/asm/syscall.h
@@ -43,6 +43,13 @@ static inline void syscall_get_arguments(struct task_struct *tsk,

+static inline long syscall_get_error(struct task_struct *task,
+ struct pt_regs *regs)
+ unsigned long error = regs->gr[28];
+ return IS_ERR_VALUE(error) ? error : 0;
static inline long syscall_get_return_value(struct task_struct *task,
struct pt_regs *regs)