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ANDROID: sched: add vendor hook for correcting cpu capacity

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Current CPU capacity is scaled by frequency
but it will sometime overestimate.
Add vendor hook to adjust cpu capacity.

android_vh_arch_set_freq_scale
	Adjust cpu freq scale for each opp.

Bug: 163935827
Bug: 265389443
Bug: 314454881

Change-Id: I054740a7f60301d5a3b085bfa540d52853f5eec5
Signed-off-by: Yun Hsiang <yun.hsiang@mediatek.com>
Signed-off-by: Han Lin <han.lin@mediatek.com>
Signed-off-by: Wade Wu <wei-ya.wu@mediatek.corp-partner.google.com>
This commit is contained in:
Yun Hsiang
2020-08-13 14:41:46 +08:00
committed by Treehugger Robot
parent 2cfadc71a6
commit 370960fe61
3 changed files with 26 additions and 0 deletions
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drivers/android/vendor_hooks.c
+2
View File
@@ -40,11 +40,13 @@
#include <trace/hooks/mm.h>
#include <trace/hooks/traps.h>
#include <trace/hooks/fault.h>
#include <trace/hooks/topology.h>
/*
* Export tracepoints that act as a bare tracehook (ie: have no trace event
* associated with them) to allow external modules to probe them.
*/
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_arch_set_freq_scale);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_cpu_idle_enter);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_cpu_idle_exit);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mpam_set);
drivers/base/arch_topology.c
+3
View File
@@ -27,6 +27,7 @@
#undef CREATE_TRACE_POINTS
#include <trace/hooks/sched.h>
#include <trace/hooks/topology.h>
static DEFINE_PER_CPU(struct scale_freq_data __rcu *, sft_data);
static struct cpumask scale_freq_counters_mask;
@@ -152,6 +153,8 @@ void topology_set_freq_scale(const struct cpumask *cpus, unsigned long cur_freq,
scale = (cur_freq << SCHED_CAPACITY_SHIFT) / max_freq;
trace_android_vh_arch_set_freq_scale(cpus, cur_freq, max_freq, &scale);
for_each_cpu(i, cpus)
per_cpu(arch_freq_scale, i) = scale;
}
include/trace/hooks/topology.h
+21
View File
@@ -0,0 +1,21 @@
/* SPDX-License-Identifier: GPL-2.0 */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM topology
#define TRACE_INCLUDE_PATH trace/hooks
#if !defined(_TRACE_HOOK_TOPOLOGY_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_HOOK_TOPOLOGY_H
#include <trace/hooks/vendor_hooks.h>
struct cpumask;
DECLARE_HOOK(android_vh_arch_set_freq_scale,
TP_PROTO(const struct cpumask *cpus, unsigned long freq, unsigned long max,
unsigned long *scale),
TP_ARGS(cpus, freq, max, scale));
#endif /* _TRACE_HOOK_TOPOLOGY_H */
/* This part must be outside protection */
#include <trace/define_trace.h>