[tip: x86/urgent] x86/mce: Remove explicit/superfluous tracing

[tip-bot2 for Peter Zijlstra]

The following commit has been merged into the x86/urgent branch of tip:

Commit-ID:     737495361d4469477ffe45d51e6fc56f44f3cc6a
Gitweb:        https://git.kernel.org/tip/737495361d4469477ffe45d51e6fc56f44f3cc6a
Author:        Peter Zijlstra <peterz@xxxxxxxxxxxxx>
AuthorDate:    Wed, 06 Jan 2021 15:36:24 +01:00
Committer:     Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitterDate: Tue, 12 Jan 2021 21:10:59 +01:00

x86/mce: Remove explicit/superfluous tracing

There's some explicit tracing left in exc_machine_check_kernel(),
remove it, as it's already implied by irqentry_nmi_enter().

Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20210106144017.719310466@xxxxxxxxxxxxx

---
 arch/x86/kernel/cpu/mce/core.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/arch/x86/kernel/cpu/mce/core.c b/arch/x86/kernel/cpu/mce/core.c
index 13d3f1c..e133ce1 100644
--- a/arch/x86/kernel/cpu/mce/core.c
+++ b/arch/x86/kernel/cpu/mce/core.c
@@ -1992,10 +1992,9 @@ static __always_inline void exc_machine_check_kernel(struct pt_regs *regs)
 	 * that out because it's an indirect call. Annotate it.
 	 */
 	instrumentation_begin();
-	trace_hardirqs_off_finish();
+
 	machine_check_vector(regs);
-	if (regs->flags & X86_EFLAGS_IF)
-		trace_hardirqs_on_prepare();
+
 	instrumentation_end();
 	irqentry_nmi_exit(regs, irq_state);
 }
@@ -2004,7 +2003,9 @@ static __always_inline void exc_machine_check_user(struct pt_regs *regs)
 {
 	irqentry_enter_from_user_mode(regs);
 	instrumentation_begin();
+
 	machine_check_vector(regs);
+
 	instrumentation_end();
 	irqentry_exit_to_user_mode(regs);
 }