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path: root/include/soc/tegra/pm.h
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/*
 * Copyright (C) 2014 NVIDIA Corporation
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#ifndef __SOC_TEGRA_PM_H__
#define __SOC_TEGRA_PM_H__

enum tegra_suspend_mode {
	TEGRA_SUSPEND_NONE = 0,
	TEGRA_SUSPEND_LP2, /* CPU voltage off */
	TEGRA_SUSPEND_LP1, /* CPU voltage off, DRAM self-refresh */
	TEGRA_SUSPEND_LP0, /* CPU + core voltage off, DRAM self-refresh */
	TEGRA_MAX_SUSPEND_MODE,
};

#if defined(CONFIG_PM_SLEEP) && defined(CONFIG_ARM)
enum tegra_suspend_mode
tegra_pm_validate_suspend_mode(enum tegra_suspend_mode mode);

/* low-level resume entry point */
void tegra_resume(void);
#else
static inline enum tegra_suspend_mode
tegra_pm_validate_suspend_mode(enum tegra_suspend_mode mode)
{
	return TEGRA_SUSPEND_NONE;
}

static inline void tegra_resume(void)
{
}
#endif /* CONFIG_PM_SLEEP */

#endif /* __SOC_TEGRA_PM_H__ */
If the user modifies the migration thread's affinity, it will not change after that happens. The original code created the thread at the first instance it was called, but later was changed to destroy the thread after the tracer was finished, and would not be created until the next instance of the tracer was established. The code that initialized the affinity was only called on the initial instantiation of the tracer. After that, it was not initialized, and the previous affinity did not match the current newly created one, making it appear that the user modified the thread's affinity when it did not, and the thread failed to migrate again. Cc: stable@vger.kernel.org Fixes: 0330f7aa8ee6 ("tracing: Have hwlat trace migrate across tracing_cpumask CPUs") Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'fs/bfs/bfs.h')