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Subject[PATCH 4/9] arm64: entry: remove the duplicated code for tracing the IRQ flags
Date
We record the hardirq flags changes in the entry/exit code now,
So the code becomes duplicated, just remove it.

Signed-off-by: Huang Shijie <shijie.huang@arm.com>
---
arch/arm64/kernel/entry.S | 12 ------------
arch/arm64/mm/fault.c | 10 ----------
2 files changed, 22 deletions(-)

diff --git a/arch/arm64/kernel/entry.S b/arch/arm64/kernel/entry.S
index 4c67c56..102fd8b 100644
--- a/arch/arm64/kernel/entry.S
+++ b/arch/arm64/kernel/entry.S
@@ -428,9 +428,6 @@ ENDPROC(el1_sync)
el1_irq:
kernel_entry 1
enable_dbg
-#ifdef CONFIG_TRACE_IRQFLAGS
- bl trace_hardirqs_off
-#endif

get_thread_info tsk
irq_handler
@@ -443,9 +440,6 @@ el1_irq:
bl el1_preempt
1:
#endif
-#ifdef CONFIG_TRACE_IRQFLAGS
- bl trace_hardirqs_on
-#endif
kernel_exit 1
ENDPROC(el1_irq)

@@ -632,16 +626,10 @@ el0_irq:
kernel_entry 0
el0_irq_naked:
enable_dbg
-#ifdef CONFIG_TRACE_IRQFLAGS
- bl trace_hardirqs_off
-#endif

ct_user_exit
irq_handler

-#ifdef CONFIG_TRACE_IRQFLAGS
- bl trace_hardirqs_on
-#endif
b ret_to_user
ENDPROC(el0_irq)

diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c
index 5954881..f94e598 100644
--- a/arch/arm64/mm/fault.c
+++ b/arch/arm64/mm/fault.c
@@ -603,13 +603,6 @@ asmlinkage int __exception do_debug_exception(unsigned long addr,
struct siginfo info;
int rv;

- /*
- * Tell lockdep we disabled irqs in entry.S. Do nothing if they were
- * already disabled to preserve the last enabled/disabled addresses.
- */
- if (interrupts_enabled(regs))
- trace_hardirqs_off();
-
if (!inf->fn(addr, esr, regs)) {
rv = 1;
} else {
@@ -624,9 +617,6 @@ asmlinkage int __exception do_debug_exception(unsigned long addr,
rv = 0;
}

- if (interrupts_enabled(regs))
- trace_hardirqs_on();
-
return rv;
}

--
2.5.5
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