openwrt/target/linux/ramips/patches-5.10/324-mt7621-perfctr-fix.patch
Ilya Lipnitskiy ef1e652016 ramips: 5.10: rename patches to follow guide
Rename patches to follow the 3-digit classification from the OpenWrt
Developer Guide.

https://openwrt.org/docs/guide-developer/build-system/use-patches-with-buildsystem#naming_patches

Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>
2021-03-06 11:24:12 +01:00

16 lines
355 B
Diff

--- a/arch/mips/ralink/irq-gic.c
+++ b/arch/mips/ralink/irq-gic.c
@@ -13,6 +13,12 @@
int get_c0_perfcount_int(void)
{
+ /*
+ * Performance counter events are routed through GIC.
+ * Prevent them from firing on CPU IRQ7 as well
+ */
+ clear_c0_status(IE_SW0 << 7);
+
return gic_get_c0_perfcount_int();
}
EXPORT_SYMBOL_GPL(get_c0_perfcount_int);