Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit f1214c56 authored by Satya Durga Srinivasu Prabhala's avatar Satya Durga Srinivasu Prabhala
Browse files

sched: Provide stub definitions for WALT 



When WALT and CFI are enabled, weak symbols which points to NULL
are causing issues like global structures becoming NULL due to
compiler/linker treatment of these symbols.

Provide proper stub definition for all such weak symbols to avoid
issues until compiler/linker gets fixed.

Change-Id: I3dce047393521681e663a0ad254b07e9769e0265
Signed-off-by: default avatarSatya Durga Srinivasu Prabhala <satyap@codeaurora.org>
parent e8c9c4f0

fs/proc/base.c

+0 −19
Original line number Diff line number Diff line
@@ -1464,12 +1464,6 @@ static const struct file_operations proc_pid_sched_operations = { 
 */



#ifdef CONFIG_SCHED_WALT

extern int __weak sched_wake_up_idle_show(struct seq_file *m, void *v);

extern ssize_t __weak sched_wake_up_idle_write(struct file *file,

		const char __user *buf, size_t count, loff_t *offset);

extern int __weak sched_wake_up_idle_open(struct inode *inode,

						struct file *filp);



static const struct file_operations proc_pid_sched_wake_up_idle_operations = {

	.open		= sched_wake_up_idle_open,

	.read		= seq_read,
@@ -1478,13 +1472,6 @@ static const struct file_operations proc_pid_sched_wake_up_idle_operations = { 
	.release	= single_release,

};



extern int __weak sched_init_task_load_show(struct seq_file *m, void *v);

extern ssize_t __weak

sched_init_task_load_write(struct file *file, const char __user *buf,

					size_t count, loff_t *offset);

extern int __weak

sched_init_task_load_open(struct inode *inode, struct file *filp);



static const struct file_operations proc_pid_sched_init_task_load_operations = {

	.open		= sched_init_task_load_open,

	.read		= seq_read,
@@ -1493,12 +1480,6 @@ static const struct file_operations proc_pid_sched_init_task_load_operations = { 
	.release	= single_release,

};



extern int __weak sched_group_id_show(struct seq_file *m, void *v);

extern ssize_t __weak

sched_group_id_write(struct file *file, const char __user *buf,

					size_t count, loff_t *offset);

extern int __weak sched_group_id_open(struct inode *inode, struct file *filp);



static const struct file_operations proc_pid_sched_group_id_operations = {

	.open		= sched_group_id_open,

	.read		= seq_read,

include/linux/sched.h

+6 −6
Original line number Diff line number Diff line
@@ -248,9 +248,9 @@ enum migrate_types { 
};



#ifdef CONFIG_HOTPLUG_CPU

extern int __weak sched_isolate_cpu(int cpu);

extern int __weak sched_unisolate_cpu(int cpu);

extern int __weak sched_unisolate_cpu_unlocked(int cpu);

extern int sched_isolate_cpu(int cpu);

extern int sched_unisolate_cpu(int cpu);

extern int sched_unisolate_cpu_unlocked(int cpu);

#else

static inline int sched_isolate_cpu(int cpu)

{
@@ -541,13 +541,13 @@ struct cpu_cycle_counter_cb { 
DECLARE_PER_CPU_READ_MOSTLY(int, sched_load_boost);



#ifdef CONFIG_SCHED_WALT

extern void __weak sched_exit(struct task_struct *p);

extern void sched_exit(struct task_struct *p);

extern int __weak

register_cpu_cycle_counter_cb(struct cpu_cycle_counter_cb *cb);

extern void __weak

sched_update_cpu_freq_min_max(const cpumask_t *cpus, u32 fmin, u32 fmax);

extern void __weak free_task_load_ptrs(struct task_struct *p);

extern void __weak sched_set_refresh_rate(enum fps fps);

extern void free_task_load_ptrs(struct task_struct *p);

extern void sched_set_refresh_rate(enum fps fps);

extern int set_task_boost(int boost, u64 period);



#define RAVG_HIST_SIZE_MAX  5

include/linux/sched/core_ctl.h

+4 −4
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0-only */

/*

 * Copyright (c) 2016, 2019, The Linux Foundation. All rights reserved.

 * Copyright (c) 2016, 2019-2020, The Linux Foundation. All rights reserved.

 */



#ifndef __CORE_CTL_H
@@ -21,9 +21,9 @@ struct core_ctl_notif_data { 
struct notifier_block;



#ifdef CONFIG_SCHED_WALT

extern int __weak core_ctl_set_boost(bool boost);

extern void __weak core_ctl_notifier_register(struct notifier_block *n);

extern void __weak core_ctl_notifier_unregister(struct notifier_block *n);

extern int core_ctl_set_boost(bool boost);

extern void core_ctl_notifier_register(struct notifier_block *n);

extern void core_ctl_notifier_unregister(struct notifier_block *n);

#else

static inline int core_ctl_set_boost(bool boost)

{

include/linux/sched/stat.h

+23 −8
Original line number Diff line number Diff line
@@ -22,20 +22,35 @@ extern unsigned long nr_iowait(void); 
extern unsigned long nr_iowait_cpu(int cpu);



#ifdef CONFIG_SCHED_WALT

extern void __weak sched_update_nr_prod(int cpu, long delta, bool inc);

extern unsigned int __weak sched_get_cpu_util(int cpu);

extern void __weak sched_update_hyst_times(void);

extern u64 __weak sched_lpm_disallowed_time(int cpu);

extern void sched_update_nr_prod(int cpu, long delta, bool inc);

extern unsigned int sched_get_cpu_util(int cpu);

extern void sched_update_hyst_times(void);

extern u64 sched_lpm_disallowed_time(int cpu);



extern int sched_wake_up_idle_show(struct seq_file *m, void *v);

extern ssize_t sched_wake_up_idle_write(struct file *file,

		const char __user *buf, size_t count, loff_t *offset);

extern int sched_wake_up_idle_open(struct inode *inode,

						struct file *filp);



extern int sched_init_task_load_show(struct seq_file *m, void *v);

extern ssize_t

sched_init_task_load_write(struct file *file, const char __user *buf,

					size_t count, loff_t *offset);

extern int

sched_init_task_load_open(struct inode *inode, struct file *filp);



extern int sched_group_id_show(struct seq_file *m, void *v);

extern ssize_t

sched_group_id_write(struct file *file, const char __user *buf,

					size_t count, loff_t *offset);

extern int sched_group_id_open(struct inode *inode, struct file *filp);

#else

static inline void sched_update_nr_prod(int cpu, long delta, bool inc) {}

static inline unsigned int sched_get_cpu_util(int cpu)

{

	return 0;

}

static inline u64 sched_get_cpu_last_busy_time(int cpu)

{

	return 0;

}

static inline void sched_update_hyst_times(void) {}

static inline u64 sched_lpm_disallowed_time(int cpu)

{

include/linux/sched/sysctl.h

+7 −8
Original line number Diff line number Diff line
@@ -54,24 +54,27 @@ extern unsigned int __weak sysctl_sched_ravg_window_nr_ticks; 
extern unsigned int __weak sysctl_sched_many_wakeup_threshold;

extern unsigned int __weak sysctl_sched_dynamic_ravg_window_enable;



extern int __weak

extern int

walt_proc_group_thresholds_handler(struct ctl_table *table, int write,

			void __user *buffer, size_t *lenp,

			loff_t *ppos);

extern int __weak

extern int

walt_proc_user_hint_handler(struct ctl_table *table, int write,

			void __user *buffer, size_t *lenp,

			loff_t *ppos);



extern int __weak

extern int

sched_updown_migrate_handler(struct ctl_table *table, int write,

			void __user *buffer, size_t *lenp,

			loff_t *ppos);



extern int __weak

extern int

sched_ravg_window_handler(struct ctl_table *table, int write,

			void __user *buffer, size_t *lenp,

			loff_t *ppos);



extern int sched_boost_handler(struct ctl_table *table, int write,

			void __user *buffer, size_t *lenp, loff_t *ppos);

#endif



#if defined(CONFIG_PREEMPTIRQ_EVENTS) || defined(CONFIG_PREEMPT_TRACER)
@@ -103,10 +106,6 @@ int sched_proc_update_handler(struct ctl_table *table, int write, 
		loff_t *ppos);

#endif



#ifdef CONFIG_SCHED_WALT

extern int __weak sched_boost_handler(struct ctl_table *table, int write,

			void __user *buffer, size_t *lenp, loff_t *ppos);

#endif

/*

 *  control realtime throttling:

 *