msm-perf: Kgsl events collection for perf (3c2b8124) · Commits · e / devices / android_kernel_fairphone_FP5

drivers/soc/qcom/msm_performance.c

+146 −0

Original line number	Diff line number	Diff line
		@@ -18,6 +18,11 @@
		#include <linux/input.h>
		#include <linux/kthread.h>
		#include <linux/sched/core_ctl.h>
		#include <soc/qcom/msm_performance.h>
		#include <linux/spinlock.h>
		#include <linux/jiffies.h>
		#include <linux/circ_buf.h>
		#include <linux/ktime.h>

		/*
		* Sched will provide the data for every 20ms window,
		@@ -26,6 +31,7 @@
		*/
		#define POLL_INT 25
		#define NODE_NAME_MAX_CHARS 16
		#define QUEUE_POOL_SIZE 512 /2^8 always keep in 2^x /

		enum cpu_clusters {
		MIN = 0,
		@@ -42,6 +48,25 @@ struct cpu_status {
		static DEFINE_PER_CPU(struct cpu_status, msm_perf_cpu_stats);
		static DEFINE_PER_CPU(struct freq_qos_request, qos_req_min);
		static DEFINE_PER_CPU(struct freq_qos_request, qos_req_max);
		static DECLARE_COMPLETION(gfx_evt_arrival);

		struct gpu_data {
		pid_t pid;
		int ctx_id;
		unsigned int timestamp;
		ktime_t arrive_ts;
		int evt_typ;
		};

		static struct gpu_data gpu_circ_buff[QUEUE_POOL_SIZE];

		struct queue_indicies {
		int head;
		int tail;
		};
		static struct queue_indicies curr_pos;

		static DEFINE_SPINLOCK(gfx_circ_buff_lock);

		struct events {
		spinlock_t cpu_hotplug_lock;
		@@ -59,6 +84,9 @@ static unsigned int curr_cap[CLUSTER_MAX];
		static cpumask_var_t limit_mask_min;
		static cpumask_var_t limit_mask_max;

		static atomic_t game_status;
		static atomic_t game_status_pid;

		static bool ready_for_freq_updates;

		static int freq_qos_request_init(void)
		@@ -314,6 +342,45 @@ static struct attribute_group events_attr_group = {
		.attrs = events_attrs,
		};

		static ssize_t show_perf_gfx_evts(struct kobject *kobj,
		struct kobj_attribute *attr,
		char *buf)
		{
		struct queue_indicies updated_pos;
		unsigned long flags;
		ssize_t retval = 0;
		int idx = 0, size, act_idx, ret = -1;

		ret = wait_for_completion_interruptible(&gfx_evt_arrival);
		if (ret)
		return 0;
		spin_lock_irqsave(&gfx_circ_buff_lock, flags);
		updated_pos.head = curr_pos.head;
		updated_pos.tail = curr_pos.tail;
		size = CIRC_CNT(updated_pos.head, updated_pos.tail, QUEUE_POOL_SIZE);
		curr_pos.tail = (curr_pos.tail + size) % QUEUE_POOL_SIZE;
		spin_unlock_irqrestore(&gfx_circ_buff_lock, flags);

		for (idx = 0; idx < size; idx++) {
		act_idx = (updated_pos.tail + idx) % QUEUE_POOL_SIZE;
		retval += scnprintf(buf + retval, PAGE_SIZE - retval,
		"%d %d %u %d %lu :",
		gpu_circ_buff[act_idx].pid,
		gpu_circ_buff[act_idx].ctx_id,
		gpu_circ_buff[act_idx].timestamp,
		gpu_circ_buff[act_idx].evt_typ,
		ktime_to_us(gpu_circ_buff[act_idx].arrive_ts));
		if (retval >= PAGE_SIZE) {
		pr_err("msm_perf:data limit exceed\n");
		break;
		}
		}
		return retval;
		}

		static struct kobj_attribute gfx_event_info_attr =
		__ATTR(gfx_evt, 0444, show_perf_gfx_evts, NULL);

		static ssize_t show_big_nr(struct kobject *kobj,
		struct kobj_attribute *attr,
		char *buf)
		@@ -364,6 +431,7 @@ static struct attribute *notify_attrs[] = {
		&top_load_attr.attr,
		&cluster_top_load_attr.attr,
		&cluster_curr_cap_attr.attr,
		&gfx_event_info_attr.attr,
		NULL,
		};

		@@ -554,6 +622,84 @@ static const struct kernel_param_ops param_ops_cc_register = {
		module_param_cb(core_ctl_register, &param_ops_cc_register,
		&core_ctl_register, 0644);

		void msm_perf_events_update(enum evt_update_t update_typ,
		enum gfx_evt_t evt_typ, pid_t pid,
		uint32_t ctx_id, uint32_t timestamp)
		{
		unsigned long flags;
		int idx = 0;

		if (update_typ != MSM_PERF_GFX)
		return;

		if (!atomic_read(&game_status) \|\|
		(pid != atomic_read(&game_status_pid)))
		return;

		spin_lock_irqsave(&gfx_circ_buff_lock, flags);
		idx = curr_pos.head;
		curr_pos.head = ((curr_pos.head + 1) % QUEUE_POOL_SIZE);
		spin_unlock_irqrestore(&gfx_circ_buff_lock, flags);
		gpu_circ_buff[idx].pid = pid;
		gpu_circ_buff[idx].ctx_id = ctx_id;
		gpu_circ_buff[idx].timestamp = timestamp;
		gpu_circ_buff[idx].evt_typ = evt_typ;
		gpu_circ_buff[idx].arrive_ts = ktime_get();

		if (evt_typ == MSM_PERF_QUEUE \|\| evt_typ == MSM_PERF_RETIRED)
		complete(&gfx_evt_arrival);
		}



		static int set_game_start_event(const char buf, const struct kernel_param kp)
		{
		long usr_val = 0;
		int ret = strlen(buf);

		kstrtol(buf, 0, &usr_val);
		atomic_set(&game_status, usr_val);
		return ret;
		}

		static int get_game_start_event(char buf, const struct kernel_param kp)
		{
		long usr_val = atomic_read(&game_status);

		return scnprintf(buf, PAGE_SIZE, "%ld\n", usr_val);
		}

		static const struct kernel_param_ops param_ops_game_start_evt = {
		.set = set_game_start_event,
		.get = get_game_start_event,
		};
		module_param_cb(evnt_gplaf_status, &param_ops_game_start_evt, NULL, 0644);

		static int set_game_start_pid(const char buf, const struct kernel_param kp)
		{
		long usr_val = 0;
		int ret = strlen(buf);

		kstrtol(buf, 0, &usr_val);
		atomic_set(&game_status_pid, usr_val);
		return ret;
		}

		static int get_game_start_pid(char buf, const struct kernel_param kp)
		{
		long usr_val = atomic_read(&game_status_pid);

		return scnprintf(buf, PAGE_SIZE, "%ld\n", usr_val);
		}

		static const struct kernel_param_ops param_ops_game_start_pid = {
		.set = set_game_start_pid,
		.get = get_game_start_pid,
		};
		module_param_cb(evnt_gplaf_pid, &param_ops_game_start_pid, NULL, 0644);

		/*****************************GFX Call**********************************/

		static int __init msm_performance_init(void)
		{
		int ret;

include/soc/qcom/msm_performance.h

0 → 100644

+29 −0

Original line number	Diff line number	Diff line
		/* SPDX-License-Identifier: GPL-2.0-only */
		/*
		* Copyright (c) 2020, The Linux Foundation. All rights reserved.
		*/

		#ifndef __MSM_PERFORMANCE_H
		#define __MSM_PERFORMANCE_H

		enum gfx_evt_t {
		MSM_PERF_INVAL,
		MSM_PERF_QUEUE,
		MSM_PERF_SUBMIT,
		MSM_PERF_RETIRED
		};

		enum evt_update_t {
		MSM_PERF_GFX,
		};

		#ifdef CONFIG_MSM_PERFORMANCE
		void msm_perf_events_update(enum evt_update_t update_typ,
		enum gfx_evt_t evt_typ, pid_t pid,
		uint32_t ctx_id, uint32_t timestamp);
		#else
		static inline void msm_perf_events_update(enum evt_update_t update_typ,
		enum gfx_evt_t evt_typ, pid_t pid,
		uint32_t ctx_id, uint32_t timestamp){}
		#endif
		#endif