linux-kernel - [PATCH v19 5/7] clocksource: Add clocksource id for arm arch counter

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Message-Id: <20210330145430.996981-6-maz@kernel.org>
Date:   Tue, 30 Mar 2021 15:54:28 +0100
From:   Marc Zyngier <maz@...nel.org>
To:     netdev@...r.kernel.org, yangbo.lu@....com, john.stultz@...aro.org,
        tglx@...utronix.de, pbonzini@...hat.com, seanjc@...gle.com,
        richardcochran@...il.com, Mark.Rutland@....com, will@...nel.org,
        suzuki.poulose@....com, Andre.Przywara@....com,
        steven.price@....com, lorenzo.pieralisi@....com,
        sudeep.holla@....com
Cc:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        kvmarm@...ts.cs.columbia.edu, kvm@...r.kernel.org,
        Steve.Capper@....com, justin.he@....com, jianyong.wu@....com,
        kernel-team@...roid.com, Mark Rutland <mark.rutland@....com>,
        Andre Przywara <andre.przywara@....com>
Subject: [PATCH v19 5/7] clocksource: Add clocksource id for arm arch counter

From: Jianyong Wu <jianyong.wu@....com>

Add clocksource id to the ARM generic counter so that it can be easily
identified from callers such as ptp_kvm.

Cc: Mark Rutland <mark.rutland@....com>
Reviewed-by: Andre Przywara <andre.przywara@....com>
Signed-off-by: Jianyong Wu <jianyong.wu@....com>
Signed-off-by: Marc Zyngier <maz@...nel.org>
Link: https://lore.kernel.org/r/20201209060932.212364-6-jianyong.wu@arm.com
---
 drivers/clocksource/arm_arch_timer.c | 2 ++
 include/linux/clocksource_ids.h      | 1 +
 2 files changed, 3 insertions(+)

diff --git a/drivers/clocksource/arm_arch_timer.c b/drivers/clocksource/arm_arch_timer.c
index d0177824c518..8f12e223703f 100644
--- a/drivers/clocksource/arm_arch_timer.c
+++ b/drivers/clocksource/arm_arch_timer.c
@@ -16,6 +16,7 @@
 #include <linux/cpu_pm.h>
 #include <linux/clockchips.h>
 #include <linux/clocksource.h>
+#include <linux/clocksource_ids.h>
 #include <linux/interrupt.h>
 #include <linux/of_irq.h>
 #include <linux/of_address.h>
@@ -191,6 +192,7 @@ static u64 arch_counter_read_cc(const struct cyclecounter *cc)
 
 static struct clocksource clocksource_counter = {
 	.name	= "arch_sys_counter",
+	.id	= CSID_ARM_ARCH_COUNTER,
 	.rating	= 400,
 	.read	= arch_counter_read,
 	.mask	= CLOCKSOURCE_MASK(56),
diff --git a/include/linux/clocksource_ids.h b/include/linux/clocksource_ids.h
index 4d8e19e05328..16775d7d8f8d 100644
--- a/include/linux/clocksource_ids.h
+++ b/include/linux/clocksource_ids.h
@@ -5,6 +5,7 @@
 /* Enum to give clocksources a unique identifier */
 enum clocksource_ids {
 	CSID_GENERIC		= 0,
+	CSID_ARM_ARCH_COUNTER,
 	CSID_MAX,
 };
 
-- 
2.29.2