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Date:   Tue, 16 Apr 2019 02:44:13 +0300
From:   "Dmitry V. Levin" <>
To:     Andrew Morton <>,
        Richard Kuo <>
Cc:     Elvira Khabirova <>,
        Eugene Syromyatnikov <>,
        Oleg Nesterov <>,
        Andy Lutomirski <>,,
Subject: [PATCH linux-next v10 2/7] hexagon: define syscall_get_error() and

syscall_get_* functions are required to be implemented on all
architectures in order to extend the generic ptrace API with

This adds remaining 2 syscall_get_* functions as documented in
asm-generic/syscall.h: syscall_get_error and syscall_get_return_value.

Cc: Richard Kuo <>
Cc: Elvira Khabirova <>
Cc: Eugene Syromyatnikov <>
Cc: Oleg Nesterov <>
Cc: Andy Lutomirski <>
Signed-off-by: Dmitry V. Levin <>

Richard, this patch is waiting for ACK since November.

    v10: unchanged
    v9: unchanged
    v8: moved syscall_get_arch to separate audit patchset
    v7: unchanged
    v6: added missing includes
    v5: added syscall_get_error and syscall_get_return_value
    v4: unchanged
    v3: unchanged
    v2: unchanged

 arch/hexagon/include/asm/syscall.h | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/hexagon/include/asm/syscall.h b/arch/hexagon/include/asm/syscall.h
index dab26a71f577..0f28a6a39c3a 100644
--- a/arch/hexagon/include/asm/syscall.h
+++ b/arch/hexagon/include/asm/syscall.h
@@ -22,6 +22,8 @@
 #include <uapi/linux/audit.h>
+#include <linux/err.h>
+#include <asm/ptrace.h>
 typedef long (*syscall_fn)(unsigned long, unsigned long,
 	unsigned long, unsigned long,
@@ -44,6 +46,18 @@ static inline void syscall_get_arguments(struct task_struct *task,
 	memcpy(args, &(&regs->r00)[0], 6 * sizeof(args[0]));
+static inline long syscall_get_error(struct task_struct *task,
+				     struct pt_regs *regs)
+	return IS_ERR_VALUE(regs->r00) ? regs->r00 : 0;
+static inline long syscall_get_return_value(struct task_struct *task,
+					    struct pt_regs *regs)
+	return regs->r00;
 static inline int syscall_get_arch(struct task_struct *task)

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