From 9f46753616b63b2749f5dad9c3d2e695c907cdea Mon Sep 17 00:00:00 2001
From: Jaegeuk Kim <jaegeuk@google.com>
Date: Tue, 19 May 2020 15:37:19 -0700
Subject: [PATCH] ANDROID: GKI: support mm_event for FS/IO/UFS path

This is stub for FS/IO/UFS part in mm_event.

Bug: 149182139
Change-Id: Iae01a7d7c27224f2d7dea287f1d713103d8c7398
Signed-off-by: Jaegeuk Kim <jaegeuk@google.com>
---
 include/linux/blk_types.h | 2 ++
 include/linux/mm_event.h  | 7 ++++++-
 mm/mm_event.c             | 5 +++++
 3 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index 5de65bec9818..211deb62534f 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -212,6 +212,8 @@ struct bio {
 
 	struct bio_set		*bi_pool;
 
+	ktime_t bi_alloc_ts;			/* for mm_event */
+
 	ANDROID_KABI_RESERVE(1);
 	ANDROID_KABI_RESERVE(2);
 
diff --git a/include/linux/mm_event.h b/include/linux/mm_event.h
index 71962f3955f4..0943d6e79fae 100644
--- a/include/linux/mm_event.h
+++ b/include/linux/mm_event.h
@@ -10,7 +10,12 @@ enum mm_event_type {
 	MM_RECLAIM = 4,
 	MM_SWP_FAULT = 5,
 	MM_KERN_ALLOC = 6,
-	MM_TYPE_NUM = 7,
+	BLK_READ_SUBMIT_BIO = 7,
+	UFS_READ_QUEUE_CMD = 8,
+	UFS_READ_SEND_CMD = 9,
+	UFS_READ_COMPL_CMD = 10,
+	F2FS_READ_DATA = 11,
+	MM_TYPE_NUM = 12,
 };
 
 struct mm_event_task {
diff --git a/mm/mm_event.c b/mm/mm_event.c
index 02e1daba6582..208071ae3ddb 100644
--- a/mm/mm_event.c
+++ b/mm/mm_event.c
@@ -5,3 +5,8 @@ void mm_event_count(enum mm_event_type event, int count)
 {
 }
 EXPORT_SYMBOL_GPL(mm_event_count);
+
+void mm_event_end(enum mm_event_type event, ktime_t start)
+{
+}
+EXPORT_SYMBOL_GPL(mm_event_end);