From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Lina Iyer <ilina@codeaurora.org>
Date: Thu, 5 Nov 2020 13:41:07 -0700
Subject: NOUPSTREAM: ANDROID: arm: allow hooks into ipi

Allow drivers to register hooks when IPIs are sent and handled. The
statistics of these IPIs are helpful in predicting CPU idle states.

[CPNOTE: 03/06/21] Lee: Still exported in `aosp/android13-5.10`

Bug: 172588415
Signed-off-by: Lina Iyer <ilina@codeaurora.org>
Change-Id: I3706743ee4077157f8205870cecfff92841f40ce
---
 arch/arm/kernel/smp.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -51,6 +51,10 @@
 #define CREATE_TRACE_POINTS
 #include <trace/events/ipi.h>
 
+EXPORT_TRACEPOINT_SYMBOL_GPL(ipi_raise);
+EXPORT_TRACEPOINT_SYMBOL_GPL(ipi_entry);
+EXPORT_TRACEPOINT_SYMBOL_GPL(ipi_exit);
+
 /*
  * as from 2.5, kernels no longer have an init_tasks structure
  * so we need some other way of telling a new secondary core