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ANDROID: cpuidle-psci: Add vendor hook for cpuidle psci enter and exit

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Add vendor hook for cpuidle to allow vendor modules for s2idle
enhancements.

Bug: 190353898
Change-Id: I02b1393e6119e32eae96010ba5951405dbdada2b
Signed-off-by: Maulik Shah <mkshah@codeaurora.org>
This commit is contained in:
Maulik Shah
2021-06-08 14:33:31 +05:30
committed by Todd Kjos
parent 6227516eed
commit fb49b843af
3 changed files with 33 additions and 0 deletions
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3
drivers/android/vendor_hooks.c
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@@ -61,6 +61,7 @@
#include <trace/hooks/v4l2mc.h>
#include <trace/hooks/scmi.h>
#include <trace/hooks/user.h>
#include <trace/hooks/cpuidle_psci.h>
/*
* Export tracepoints that act as a bare tracehook (ie: have no trace event
@@ -318,3 +319,5 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_force_compatible_post);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_alloc_uid);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_free_user);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_set_balance_anon_file_reclaim);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_cpuidle_psci_enter);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_cpuidle_psci_exit);

5
drivers/cpuidle/cpuidle-psci.c
View File

@@ -25,6 +25,7 @@
#include <linux/string.h>
#include <asm/cpuidle.h>
#include <trace/hooks/cpuidle_psci.h>
#include "cpuidle-psci.h"
#include "dt_idle_states.h"
@@ -67,6 +68,8 @@ static int __psci_enter_domain_idle_state(struct cpuidle_device *dev,
if (ret)
return -1;
trace_android_vh_cpuidle_psci_enter(dev, s2idle);
/* Do runtime PM to manage a hierarchical CPU toplogy. */
rcu_irq_enter_irqson();
if (s2idle)
@@ -88,6 +91,8 @@ static int __psci_enter_domain_idle_state(struct cpuidle_device *dev,
pm_runtime_get_sync(pd_dev);
rcu_irq_exit_irqson();
trace_android_vh_cpuidle_psci_exit(dev, s2idle);
cpu_pm_exit();
/* Clear the domain state to start fresh when back from idle. */

25
include/trace/hooks/cpuidle_psci.h Normal file
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@@ -0,0 +1,25 @@
/* SPDX-License-Identifier: GPL-2.0 */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM cpuidle_psci
#define TRACE_INCLUDE_PATH trace/hooks
#if !defined(_TRACE_HOOK_CPUIDLE_PSCI_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_HOOK_CPUIDLE_PSCI_H
#include <linux/tracepoint.h>
#include <trace/hooks/vendor_hooks.h>
/*
* Following tracepoints are not exported in tracefs and provide a
* mechanism for vendor modules to hook and extend functionality
*/
struct cpuidle_device;
DECLARE_HOOK(android_vh_cpuidle_psci_enter,
TP_PROTO(struct cpuidle_device *dev, bool s2idle),
TP_ARGS(dev, s2idle));
DECLARE_HOOK(android_vh_cpuidle_psci_exit,
TP_PROTO(struct cpuidle_device *dev, bool s2idle),
TP_ARGS(dev, s2idle));
#endif /* _TRACE_HOOK_CPUIDLE_PSCI_H */
/* This part must be outside protection */
#include <trace/define_trace.h>