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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

Signed-off-by: Yun Hsiang <yun.hsiang@mediatek.com>
Change-Id: I054740a7f60301d5a3b085bfa540d52853f5eec5
(cherry picked from commit e209b3b88d)
This commit is contained in:
Yun Hsiang
2020-08-13 14:41:46 +08:00
committed by Todd Kjos
parent d1dba4ce13
commit 84d818b0a6
3 changed files with 34 additions and 0 deletions
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2
drivers/android/vendor_hooks.c
View File

@@ -44,11 +44,13 @@
#include <trace/hooks/fips140.h>
#include <trace/hooks/dmabuf.h>
#include <trace/hooks/timer.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_is_fpsimd_save);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_binder_transaction_init);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_binder_set_priority);

3
drivers/base/arch_topology.c
View File

@@ -25,6 +25,7 @@
#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;
@@ -149,6 +150,8 @@ 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;
}

29
include/trace/hooks/topology.h Normal file
View File

@@ -0,0 +1,29 @@
/* 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;
#if defined(CONFIG_TRACEPOINTS) && defined(CONFIG_ANDROID_VENDOR_HOOKS)
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));
#else
#define trace_android_vh_arch_set_freq_scale(cpus, freq, max, scale)
#endif
#endif /* _TRACE_HOOK_TOPOLOGY_H */
/* This part must be outside protection */
#include <trace/define_trace.h>