linux/drivers/base/syscore.c
Sakari Ailus d75f773c86 treewide: Switch printk users from %pf and %pF to %ps and %pS, respectively
%pF and %pf are functionally equivalent to %pS and %ps conversion
specifiers. The former are deprecated, therefore switch the current users
to use the preferred variant.

The changes have been produced by the following command:

	git grep -l '%p[fF]' | grep -v '^\(tools\|Documentation\)/' | \
	while read i; do perl -i -pe 's/%pf/%ps/g; s/%pF/%pS/g;' $i; done

And verifying the result.

Link: http://lkml.kernel.org/r/20190325193229.23390-1-sakari.ailus@linux.intel.com
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: sparclinux@vger.kernel.org
Cc: linux-um@lists.infradead.org
Cc: xen-devel@lists.xenproject.org
Cc: linux-acpi@vger.kernel.org
Cc: linux-pm@vger.kernel.org
Cc: drbd-dev@lists.linbit.com
Cc: linux-block@vger.kernel.org
Cc: linux-mmc@vger.kernel.org
Cc: linux-nvdimm@lists.01.org
Cc: linux-pci@vger.kernel.org
Cc: linux-scsi@vger.kernel.org
Cc: linux-btrfs@vger.kernel.org
Cc: linux-f2fs-devel@lists.sourceforge.net
Cc: linux-mm@kvack.org
Cc: ceph-devel@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: David Sterba <dsterba@suse.com> (for btrfs)
Acked-by: Mike Rapoport <rppt@linux.ibm.com> (for mm/memblock.c)
Acked-by: Bjorn Helgaas <bhelgaas@google.com> (for drivers/pci)
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Petr Mladek <pmladek@suse.com>
2019-04-09 14:19:06 +02:00

131 lines
3.2 KiB
C

// SPDX-License-Identifier: GPL-2.0
/*
* syscore.c - Execution of system core operations.
*
* Copyright (C) 2011 Rafael J. Wysocki <rjw@sisk.pl>, Novell Inc.
*/
#include <linux/syscore_ops.h>
#include <linux/mutex.h>
#include <linux/module.h>
#include <linux/suspend.h>
#include <trace/events/power.h>
static LIST_HEAD(syscore_ops_list);
static DEFINE_MUTEX(syscore_ops_lock);
/**
* register_syscore_ops - Register a set of system core operations.
* @ops: System core operations to register.
*/
void register_syscore_ops(struct syscore_ops *ops)
{
mutex_lock(&syscore_ops_lock);
list_add_tail(&ops->node, &syscore_ops_list);
mutex_unlock(&syscore_ops_lock);
}
EXPORT_SYMBOL_GPL(register_syscore_ops);
/**
* unregister_syscore_ops - Unregister a set of system core operations.
* @ops: System core operations to unregister.
*/
void unregister_syscore_ops(struct syscore_ops *ops)
{
mutex_lock(&syscore_ops_lock);
list_del(&ops->node);
mutex_unlock(&syscore_ops_lock);
}
EXPORT_SYMBOL_GPL(unregister_syscore_ops);
#ifdef CONFIG_PM_SLEEP
/**
* syscore_suspend - Execute all the registered system core suspend callbacks.
*
* This function is executed with one CPU on-line and disabled interrupts.
*/
int syscore_suspend(void)
{
struct syscore_ops *ops;
int ret = 0;
trace_suspend_resume(TPS("syscore_suspend"), 0, true);
pr_debug("Checking wakeup interrupts\n");
/* Return error code if there are any wakeup interrupts pending. */
if (pm_wakeup_pending())
return -EBUSY;
WARN_ONCE(!irqs_disabled(),
"Interrupts enabled before system core suspend.\n");
list_for_each_entry_reverse(ops, &syscore_ops_list, node)
if (ops->suspend) {
if (initcall_debug)
pr_info("PM: Calling %pS\n", ops->suspend);
ret = ops->suspend();
if (ret)
goto err_out;
WARN_ONCE(!irqs_disabled(),
"Interrupts enabled after %pS\n", ops->suspend);
}
trace_suspend_resume(TPS("syscore_suspend"), 0, false);
return 0;
err_out:
pr_err("PM: System core suspend callback %pS failed.\n", ops->suspend);
list_for_each_entry_continue(ops, &syscore_ops_list, node)
if (ops->resume)
ops->resume();
return ret;
}
EXPORT_SYMBOL_GPL(syscore_suspend);
/**
* syscore_resume - Execute all the registered system core resume callbacks.
*
* This function is executed with one CPU on-line and disabled interrupts.
*/
void syscore_resume(void)
{
struct syscore_ops *ops;
trace_suspend_resume(TPS("syscore_resume"), 0, true);
WARN_ONCE(!irqs_disabled(),
"Interrupts enabled before system core resume.\n");
list_for_each_entry(ops, &syscore_ops_list, node)
if (ops->resume) {
if (initcall_debug)
pr_info("PM: Calling %pS\n", ops->resume);
ops->resume();
WARN_ONCE(!irqs_disabled(),
"Interrupts enabled after %pS\n", ops->resume);
}
trace_suspend_resume(TPS("syscore_resume"), 0, false);
}
EXPORT_SYMBOL_GPL(syscore_resume);
#endif /* CONFIG_PM_SLEEP */
/**
* syscore_shutdown - Execute all the registered system core shutdown callbacks.
*/
void syscore_shutdown(void)
{
struct syscore_ops *ops;
mutex_lock(&syscore_ops_lock);
list_for_each_entry_reverse(ops, &syscore_ops_list, node)
if (ops->shutdown) {
if (initcall_debug)
pr_info("PM: Calling %pS\n", ops->shutdown);
ops->shutdown();
}
mutex_unlock(&syscore_ops_lock);
}