m68k: Wire up syscall_trace_enter/leave for m68k

m68k (other than Coldfire) uses syscall_trace for both trace entry
and trace exit. Seccomp support requires separate entry points for
trace entry and exit which are already provided for Coldfire.

Replace syscall_trace by syscall_trace_enter and syscall_trace_leave
in preparation for seccomp support.

No regression seen in testing with strace on ARAnyM.

Signed-off-by: Michael Schmitz <schmitzmic@gmail.com>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Link: https://lore.kernel.org/r/20220127074158.25888-2-schmitzmic@gmail.com
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

diff --git a/arch/m68k/kernel/entry.S b/arch/m68k/kernel/entry.S
index 9434fca..18f278b 100644 (file)
--- a/arch/m68k/kernel/entry.S
+++ b/arch/m68k/kernel/entry.S
@@ -181,7 +181,7 @@ do_trace_entry:
        movel   #-ENOSYS,%sp@(PT_OFF_D0)| needed for strace
        subql   #4,%sp
        SAVE_SWITCH_STACK
-       jbsr    syscall_trace
+       jbsr    syscall_trace_enter
        RESTORE_SWITCH_STACK
        addql   #4,%sp
        movel   %sp@(PT_OFF_ORIG_D0),%d0
@@ -194,7 +194,7 @@ badsys:
 do_trace_exit:
        subql   #4,%sp
        SAVE_SWITCH_STACK
-       jbsr    syscall_trace
+       jbsr    syscall_trace_leave
        RESTORE_SWITCH_STACK
        addql   #4,%sp
        jra     .Lret_from_exception

diff --git a/arch/m68k/kernel/ptrace.c b/arch/m68k/kernel/ptrace.c
index 6342ff4..daebccd 100644 (file)
--- a/arch/m68k/kernel/ptrace.c
+++ b/arch/m68k/kernel/ptrace.c
@@ -270,12 +270,6 @@ out_eio:
        return -EIO;
 }
 
-asmlinkage void syscall_trace(void)
-{
-       ptrace_report_syscall(0);
-}
-
-#if defined(CONFIG_COLDFIRE) || !defined(CONFIG_MMU)
 asmlinkage int syscall_trace_enter(void)
 {
        int ret = 0;
@@ -290,4 +284,3 @@ asmlinkage void syscall_trace_leave(void)
        if (test_thread_flag(TIF_SYSCALL_TRACE))
                ptrace_report_syscall_exit(task_pt_regs(current), 0);
 }
-#endif /* CONFIG_COLDFIRE */