[PATCH v16 08/18] arm64: ptrace: Rename syscall_trace_exit() to syscall_exit_work()

[Jinjie Ruan]

In preparation for moving arm64 over to the generic entry code, rename
syscall_trace_exit() to syscall_exit_work(). The renamed function checks
and prevents illegal system calls inside user-space rseq critical
sections, while also handling tracing, auditing, and ptrace reporting.

No functional changes.

Cc: Mark Rutland <mark.rutland@xxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxx>
Cc: Will Deacon <will@xxxxxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Ada Couprie Diaz <ada.coupriediaz@xxxxxxx>
Signed-off-by: Jinjie Ruan <ruanjinjie@xxxxxxxxxx>
---
 arch/arm64/include/asm/syscall.h | 2 +-
 arch/arm64/kernel/ptrace.c       | 2 +-
 arch/arm64/kernel/syscall.c      | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/include/asm/syscall.h b/arch/arm64/include/asm/syscall.h
index 30b203ef156b..8205af0be612 100644
--- a/arch/arm64/include/asm/syscall.h
+++ b/arch/arm64/include/asm/syscall.h
@@ -121,6 +121,6 @@ static inline int syscall_get_arch(struct task_struct *task)
 }
 
 int syscall_trace_enter(struct pt_regs *regs, unsigned long flags);
-void syscall_trace_exit(struct pt_regs *regs, unsigned long flags);
+void syscall_exit_work(struct pt_regs *regs, unsigned long flags);
 
 #endif	/* __ASM_SYSCALL_H */
diff --git a/arch/arm64/kernel/ptrace.c b/arch/arm64/kernel/ptrace.c
index bc08c93c69c5..9ebe3389451c 100644
--- a/arch/arm64/kernel/ptrace.c
+++ b/arch/arm64/kernel/ptrace.c
@@ -2453,7 +2453,7 @@ int syscall_trace_enter(struct pt_regs *regs, unsigned long flags)
 	return syscall;
 }
 
-void syscall_trace_exit(struct pt_regs *regs, unsigned long flags)
+void syscall_exit_work(struct pt_regs *regs, unsigned long flags)
 {
 	rseq_syscall(regs);
 
diff --git a/arch/arm64/kernel/syscall.c b/arch/arm64/kernel/syscall.c
index c8e116397cfd..43ffb74162c5 100644
--- a/arch/arm64/kernel/syscall.c
+++ b/arch/arm64/kernel/syscall.c
@@ -133,7 +133,7 @@ static void el0_svc_common(struct pt_regs *regs, int scno, int sc_nr,
 
 trace_exit:
 	flags = read_thread_flags();
-	syscall_trace_exit(regs, flags);
+	syscall_exit_work(regs, flags);
 }
 
 void do_el0_svc(struct pt_regs *regs)
-- 
2.34.1