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

Sven Schnelle
2024-10-15T08:47:43Z

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@linux.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