From 0849a208ceec8623774c48a652f9c99ce3a5e472 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@openwrt.org>
Date: Thu, 11 Mar 2010 18:48:57 +0000
Subject: ar71xx: fix oprofile support

SVN-Revision: 20150
---
 .../patches-2.6.32/208-mips_oprofile_fix.patch     | 47 ++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 target/linux/generic-2.6/patches-2.6.32/208-mips_oprofile_fix.patch

(limited to 'target/linux/generic-2.6/patches-2.6.32')

diff --git a/target/linux/generic-2.6/patches-2.6.32/208-mips_oprofile_fix.patch b/target/linux/generic-2.6/patches-2.6.32/208-mips_oprofile_fix.patch
new file mode 100644
index 0000000000..2e019dba2c
--- /dev/null
+++ b/target/linux/generic-2.6/patches-2.6.32/208-mips_oprofile_fix.patch
@@ -0,0 +1,47 @@
+--- a/arch/mips/Makefile
++++ b/arch/mips/Makefile
+@@ -48,7 +48,9 @@ ifneq ($(SUBARCH),$(ARCH))
+   endif
+ endif
+ 
++ifndef CONFIG_PROFILING
+ cflags-y := -ffunction-sections
++endif
+ cflags-y += $(call cc-option, -mno-check-zero-division)
+ 
+ ifdef CONFIG_32BIT
+--- a/arch/mips/oprofile/op_model_mipsxx.c
++++ b/arch/mips/oprofile/op_model_mipsxx.c
+@@ -298,6 +298,11 @@ static void reset_counters(void *arg)
+ 	}
+ }
+ 
++static irqreturn_t mipsxx_perfcount_int(int irq, void *dev_id)
++{
++	return mipsxx_perfcount_handler();
++}
++
+ static int __init mipsxx_init(void)
+ {
+ 	int counters;
+@@ -374,6 +379,10 @@ static int __init mipsxx_init(void)
+ 	save_perf_irq = perf_irq;
+ 	perf_irq = mipsxx_perfcount_handler;
+ 
++	if (cp0_perfcount_irq >= 0)
++		return request_irq(cp0_perfcount_irq, mipsxx_perfcount_int,
++			IRQF_SHARED, "Perfcounter", save_perf_irq);
++
+ 	return 0;
+ }
+ 
+@@ -381,6 +390,9 @@ static void mipsxx_exit(void)
+ {
+ 	int counters = op_model_mipsxx_ops.num_counters;
+ 
++	if (cp0_perfcount_irq >= 0)
++		free_irq(cp0_perfcount_irq, save_perf_irq);
++
+ 	counters = counters_per_cpu_to_total(counters);
+ 	on_each_cpu(reset_counters, (void *)(long)counters, 1);
+ 
-- 
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