Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
55 lines
1.1 KiB
C
55 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* latencytop.h: Infrastructure for displaying latency
|
|
*
|
|
* (C) Copyright 2008 Intel Corporation
|
|
* Author: Arjan van de Ven <arjan@linux.intel.com>
|
|
*
|
|
*/
|
|
|
|
#ifndef _INCLUDE_GUARD_LATENCYTOP_H_
|
|
#define _INCLUDE_GUARD_LATENCYTOP_H_
|
|
|
|
#include <linux/compiler.h>
|
|
struct task_struct;
|
|
|
|
#ifdef CONFIG_LATENCYTOP
|
|
|
|
#define LT_SAVECOUNT 32
|
|
#define LT_BACKTRACEDEPTH 12
|
|
|
|
struct latency_record {
|
|
unsigned long backtrace[LT_BACKTRACEDEPTH];
|
|
unsigned int count;
|
|
unsigned long time;
|
|
unsigned long max;
|
|
};
|
|
|
|
|
|
|
|
extern int latencytop_enabled;
|
|
void __account_scheduler_latency(struct task_struct *task, int usecs, int inter);
|
|
static inline void
|
|
account_scheduler_latency(struct task_struct *task, int usecs, int inter)
|
|
{
|
|
if (unlikely(latencytop_enabled))
|
|
__account_scheduler_latency(task, usecs, inter);
|
|
}
|
|
|
|
void clear_tsk_latency_tracing(struct task_struct *p);
|
|
|
|
#else
|
|
|
|
static inline void
|
|
account_scheduler_latency(struct task_struct *task, int usecs, int inter)
|
|
{
|
|
}
|
|
|
|
static inline void clear_tsk_latency_tracing(struct task_struct *p)
|
|
{
|
|
}
|
|
|
|
#endif
|
|
|
|
#endif
|