android-mainline/ANDROID-sched-gki-add-padding-to-some-structs-to-support-WALT.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>
Date: Wed, 28 Oct 2020 00:02:04 -0700
Subject: ANDROID: sched: gki: add padding to some structs to support WALT

Add padding to below structs to support WALT based accounting:
	1. struct cpu_topology
	2. struct task_struct
	3. struct sched_domain_shared
	4. struct task_group
	5. struct root_domain
	6. struct rq

To accommodate potential future changes, reserving more memory than
what WALT needs today.

Bug: 171858786
Change-Id: If6d901174fc7963be3ae44daa799cb2953669ec1
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>
---
 include/linux/arch_topology.h  | 3 +++
 include/linux/sched.h          | 2 +-
 include/linux/sched/topology.h | 3 +++
 kernel/sched/sched.h           | 7 +++++++
 4 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/include/linux/arch_topology.h b/include/linux/arch_topology.h
--- a/include/linux/arch_topology.h
+++ b/include/linux/arch_topology.h
@@ -7,6 +7,7 @@
 
 #include <linux/types.h>
 #include <linux/percpu.h>
+#include <linux/android_vendor.h>
 
 void topology_normalize_cpu_scale(void);
 int topology_update_cpu_topology(void);
@@ -54,6 +55,8 @@ struct cpu_topology {
 	cpumask_t thread_sibling;
 	cpumask_t core_sibling;
 	cpumask_t llc_sibling;
+
+	cpumask_t android_vendor_data1;
 };
 
 #ifdef CONFIG_GENERIC_ARCH_TOPOLOGY
diff --git a/include/linux/sched.h b/include/linux/sched.h
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1364,7 +1364,7 @@ struct task_struct {
 					__mce_reserved : 62;
 	struct callback_head		mce_kill_me;
 #endif
-	ANDROID_VENDOR_DATA_ARRAY(1, 2);
+	ANDROID_VENDOR_DATA_ARRAY(1, 64);
 
 #ifdef CONFIG_KRETPROBES
 	struct llist_head               kretprobe_instances;
diff --git a/include/linux/sched/topology.h b/include/linux/sched/topology.h
--- a/include/linux/sched/topology.h
+++ b/include/linux/sched/topology.h
@@ -3,6 +3,7 @@
 #define _LINUX_SCHED_TOPOLOGY_H
 
 #include <linux/topology.h>
+#include <linux/android_vendor.h>
 
 #include <linux/sched/idle.h>
 
@@ -74,6 +75,8 @@ struct sched_domain_shared {
 	atomic_t	ref;
 	atomic_t	nr_busy_cpus;
 	int		has_idle_cores;
+
+	ANDROID_VENDOR_DATA(1);
 };
 
 struct sched_domain {
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -65,6 +65,7 @@
 #include <linux/syscalls.h>
 #include <linux/task_work.h>
 #include <linux/tsacct_kern.h>
+#include <linux/android_vendor.h>
 
 #include <asm/tlb.h>
 
@@ -423,6 +424,8 @@ struct task_group {
 	struct uclamp_se	uclamp[UCLAMP_CNT];
 	/* Latency-sensitive flag used for a task group */
 	unsigned int		latency_sensitive;
+
+	ANDROID_VENDOR_DATA_ARRAY(1, 4);
 #endif
 
 };
@@ -832,6 +835,8 @@ struct root_domain {
 	 * CPUs of the rd. Protected by RCU.
 	 */
 	struct perf_domain __rcu *pd;
+
+	ANDROID_VENDOR_DATA_ARRAY(1, 4);
 };
 
 extern void init_defrootdomain(void);
@@ -1063,6 +1068,8 @@ struct rq {
 #endif
 	unsigned int		push_busy;
 	struct cpu_stop_work	push_work;
+
+	ANDROID_VENDOR_DATA_ARRAY(1, 96);
 };
 
 #ifdef CONFIG_FAIR_GROUP_SCHED