linux-kernel - [PATCH 1/3] s390/time: Add clocksource id to TOD clock

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Message-ID: <20241015084728.1833876-2-svens@linux.ibm.com>
Date: Tue, 15 Oct 2024 10:47:23 +0200
From: Sven Schnelle <svens@...ux.ibm.com>
To: Heiko Carstens <hca@...ux.ibm.com>, Vasily Gorbik <gor@...ux.ibm.com>,
        Alexander Gordeev <agordeev@...ux.ibm.com>,
        Christian Borntraeger <borntraeger@...ux.ibm.com>
Cc: linux-s390@...r.kernel.org, Yangbo Lu <yangbo.lu@....com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 1/3] s390/time: Add clocksource id to TOD clock

To allow specifying the clock source in the upcoming PtP driver,
add a clocksource ID to the s390 TOD clock.

Signed-off-by: Sven Schnelle <svens@...ux.ibm.com>
---
 arch/s390/kernel/time.c         | 1 +
 include/linux/clocksource_ids.h | 1 +
 2 files changed, 2 insertions(+)

diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c
index b713effe0579..4214901c3ab0 100644
--- a/arch/s390/kernel/time.c
+++ b/arch/s390/kernel/time.c
@@ -255,6 +255,7 @@ static struct clocksource clocksource_tod = {
 	.shift		= 24,
 	.flags		= CLOCK_SOURCE_IS_CONTINUOUS,
 	.vdso_clock_mode = VDSO_CLOCKMODE_TOD,
+	.id		= CSID_S390_TOD,
 };
 
 struct clocksource * __init clocksource_default_clock(void)
diff --git a/include/linux/clocksource_ids.h b/include/linux/clocksource_ids.h
index 2bb4d8c2f1b0..c4ef4ae2eded 100644
--- a/include/linux/clocksource_ids.h
+++ b/include/linux/clocksource_ids.h
@@ -6,6 +6,7 @@
 enum clocksource_ids {
 	CSID_GENERIC		= 0,
 	CSID_ARM_ARCH_COUNTER,
+	CSID_S390_TOD,
 	CSID_X86_TSC_EARLY,
 	CSID_X86_TSC,
 	CSID_X86_KVM_CLK,
-- 
2.43.0