linux-kernel - [RFC 1/4] PM: hibernate: export hibernation_in

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Message-ID: <20251018142114.897445-2-usama.anjum@collabora.com>
Date: Sat, 18 Oct 2025 19:21:04 +0500
From: Muhammad Usama Anjum <usama.anjum@...labora.com>
To: "Rafael J. Wysocki" <rafael@...nel.org>,
	Len Brown <lenb@...nel.org>,
	Pavel Machek <pavel@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Danilo Krummrich <dakr@...nel.org>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <peterz@...radead.org>,
	linux-acpi@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-pm@...r.kernel.org,
	linux-input@...r.kernel.org
Cc: Muhammad Usama Anjum <usama.anjum@...labora.com>,
	kernel@...labora.com,
	superm1@...nel.org
Subject: [RFC 1/4] PM: hibernate: export hibernation_in_progress()

Export hibernation_in_progress() to be used by other modules. Add its
signature when hibernation config isn't enabled as well.

Signed-off-by: Muhammad Usama Anjum <usama.anjum@...labora.com>
---
 include/linux/suspend.h  | 2 ++
 kernel/power/hibernate.c | 1 +
 2 files changed, 3 insertions(+)

diff --git a/include/linux/suspend.h b/include/linux/suspend.h
index b02876f1ae38a..348831cdb60e4 100644
--- a/include/linux/suspend.h
+++ b/include/linux/suspend.h
@@ -393,6 +393,7 @@ extern void hibernation_set_ops(const struct platform_hibernation_ops *ops);
 extern int hibernate(void);
 extern bool system_entering_hibernation(void);
 extern bool hibernation_available(void);
+extern bool hibernation_in_progress(void);
 asmlinkage int swsusp_save(void);
 extern struct pbe *restore_pblist;
 int pfn_is_nosave(unsigned long pfn);
@@ -412,6 +413,7 @@ static inline void hibernation_set_ops(const struct platform_hibernation_ops *op
 static inline int hibernate(void) { return -ENOSYS; }
 static inline bool system_entering_hibernation(void) { return false; }
 static inline bool hibernation_available(void) { return false; }
+static inline bool hibernation_in_progress(void) { return false; }
 
 static inline int hibernate_quiet_exec(int (*func)(void *data), void *data) {
 	return -ENOTSUPP;
diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c
index 14e85ff235512..aadf82f57e868 100644
--- a/kernel/power/hibernate.c
+++ b/kernel/power/hibernate.c
@@ -105,6 +105,7 @@ bool hibernation_in_progress(void)
 {
 	return !atomic_read(&hibernate_atomic);
 }
+EXPORT_SYMBOL_GPL(hibernation_in_progress);
 
 bool hibernation_available(void)
 {
-- 
2.47.3