On FuLoong-2F IP6 is shared by the performance counter overflow interrupt
and the Bonito northbridge interrupt. To reduce overhead only call
do_IRQ() when oprofile is enabled to reduce overhead.
This patch adds an inline function do_perfcnt_IRQ() to hide the #if's ,
which can be shared by the other Loongson machines, i.e. gdium.
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1492/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
#define LOONGSON_IRQ_BASE 32
#define LOONGSON2_PERFCNT_IRQ (MIPS_CPU_IRQ_BASE + 6) /* cpu perf counter */
+#include <linux/interrupt.h>
+static inline void do_perfcnt_IRQ(void)
+{
+#if defined(CONFIG_OPROFILE) || defined(CONFIG_OPROFILE_MODULE)
+ do_IRQ(LOONGSON2_PERFCNT_IRQ);
+#endif
+}
+
#define LOONGSON_FLASH_BASE 0x1c000000
#define LOONGSON_FLASH_SIZE 0x02000000 /* 32M */
#define LOONGSON_FLASH_TOP (LOONGSON_FLASH_BASE+LOONGSON_FLASH_SIZE-1)
if (pending & CAUSEF_IP7)
do_IRQ(MIPS_CPU_IRQ_BASE + 7);
else if (pending & CAUSEF_IP6) /* perf counter loverflow */
- do_IRQ(LOONGSON2_PERFCNT_IRQ);
+ do_perfcnt_IRQ();
else if (pending & CAUSEF_IP5)
i8259_irqdispatch();
else if (pending & CAUSEF_IP2)
if (pending & CAUSEF_IP7)
do_IRQ(LOONGSON_TIMER_IRQ);
else if (pending & CAUSEF_IP6) { /* North Bridge, Perf counter */
-#if defined(CONFIG_OPROFILE) || defined(CONFIG_OPROFILE_MODULE)
- do_IRQ(LOONGSON2_PERFCNT_IRQ);
-#endif
+ do_perfcnt_IRQ();
bonito_irqdispatch();
} else if (pending & CAUSEF_IP3) /* CPU UART */
do_IRQ(LOONGSON_UART_IRQ);