This shaves a few cycles off the slow paths.
Signed-off-by: Andy Lutomirski <[email protected]>
---
arch/x86/entry/common.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/arch/x86/entry/common.c b/arch/x86/entry/common.c
index 3ae6191ad1a2..88966fbf7125 100644
--- a/arch/x86/entry/common.c
+++ b/arch/x86/entry/common.c
@@ -71,7 +71,8 @@ unsigned long syscall_trace_enter_phase1(struct pt_regs
*regs, u32 arch)
unsigned long ret = 0;
u32 work;
- BUG_ON(regs != task_pt_regs(current));
+ if (IS_ENABLED(CONFIG_DEBUG_ENTRY))
+ BUG_ON(regs != task_pt_regs(current));
work = ACCESS_ONCE(current_thread_info()->flags) &
_TIF_WORK_SYSCALL_ENTRY;
@@ -160,7 +161,8 @@ long syscall_trace_enter_phase2(struct pt_regs *regs, u32
arch,
u32 work = ACCESS_ONCE(current_thread_info()->flags) &
_TIF_WORK_SYSCALL_ENTRY;
- BUG_ON(regs != task_pt_regs(current));
+ if (IS_ENABLED(CONFIG_DEBUG_ENTRY))
+ BUG_ON(regs != task_pt_regs(current));
/*
* If we stepped into a sysenter/syscall insn, it trapped in
--
2.4.3
--
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