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From: Jianyong Wu <jianyong.wu@arm.com>
To: netdev@vger.kernel.org, yangbo.lu@nxp.com,
	john.stultz@linaro.org, tglx@linutronix.de, pbonzini@redhat.com,
	sean.j.christopherson@intel.com, maz@kernel.org,
	richardcochran@gmail.com, Mark.Rutland@arm.com, will@kernel.org,
	suzuki.poulose@arm.com, steven.price@arm.com
Cc: justin.he@arm.com, kvm@vger.kernel.org,
	linux-kernel@vger.kernel.org, nd@arm.com,
	kvmarm@lists.cs.columbia.edu,
	linux-arm-kernel@lists.infradead.org
Subject: [RFC PATCH 4/9] clocksource: Add clocksource id for arm arch counter
Date: Mon, 10 Feb 2020 16:49:01 +0800
Message-ID: <20200210084906.24870-5-jianyong.wu@arm.com> (raw)
In-Reply-To: <20200210084906.24870-1-jianyong.wu@arm.com>

Add clocksource id for arm arch counter to let it be identified easily and
elegantly in ptp_kvm implementation for arm.

Signed-off-by: Jianyong Wu <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 9a5464c625b4..4eb014fefa5b 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>
@@ -187,6 +188,7 @@ 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 5595ab843c3d..93bec8426c44 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,
 };
 
-- 
2.17.1

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  parent reply index

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-10  8:48 [RFC PATCH v10 0/9] Enable ptp_kvm for arm/arm64 Jianyong Wu
2020-02-10  8:48 ` [RFC PATCH 1/9] psci: export psci conduit get helper Jianyong Wu
2020-02-10  8:48 ` [RFC PATCH 2/9] ptp: Reorganize ptp_kvm modules to make it arch-independent Jianyong Wu
2020-02-10  8:49 ` [RFC PATCH 3/9] time: Add mechanism to recognize clocksource in time_get_snapshot Jianyong Wu
2020-02-10  8:49 ` Jianyong Wu [this message]
2020-02-10  8:49 ` [RFC PATCH 5/9] psci: Add hypercall service for ptp_kvm Jianyong Wu
2020-02-10  8:49 ` [RFC PATCH 6/9] ptp: arm/arm64: Enable ptp_kvm for arm/arm64 Jianyong Wu
2020-02-10  8:49 ` [RFC PATCH 7/9] ptp: extend input argument for getcrosstimestamp API Jianyong Wu
2020-02-10  8:49 ` [RFC PATCH 8/9] arm/arm64: add mechanism to let user choose which counter to return Jianyong Wu
2020-02-10  8:49 ` [RFC PATCH 9/9] arm/arm64: Add kvm capability check extension for ptp_kvm Jianyong Wu
2020-02-17  2:28 ` [RFC PATCH v10 0/9] Enable ptp_kvm for arm/arm64 Jianyong Wu
2020-03-27  9:35   ` Jianyong Wu
2020-03-27  9:36     ` Marc Zyngier

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