[PATCH -next v5 18/22] arm64/ptrace: Expand secure_computing() in place

[Jinjie Ruan <ruanjinjie@xxxxxxxxxx>]

The generic entry expand secure_computing() in place and call
__secure_computing() directly.

In order to switch to the generic entry for arm64, refactor
secure_computing() for syscall_trace_enter().

No functional changes.

Signed-off-by: Jinjie Ruan <ruanjinjie@xxxxxxxxxx>
---
 arch/arm64/kernel/ptrace.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/kernel/ptrace.c b/arch/arm64/kernel/ptrace.c
index b53d3759baf8..c0c00e173f61 100644
--- a/arch/arm64/kernel/ptrace.c
+++ b/arch/arm64/kernel/ptrace.c
@@ -2368,8 +2368,11 @@ int syscall_trace_enter(struct pt_regs *regs, long 
syscall, unsigned long flags)
        }
 
        /* Do the secure computing after ptrace; failures should be fast. */
-       if (secure_computing() == -1)
-               return NO_SYSCALL;
+       if (flags & _TIF_SECCOMP) {
+               ret = __secure_computing(NULL);
+               if (ret == -1L)
+                       return NO_SYSCALL;
+       }
 
        /* Either of the above might have changed the syscall number */
        syscall = syscall_get_nr(current, regs);
-- 
2.34.1