netdev - [RFC PATCH v11 7/9] ptp: extend input argument for getcrosstimestamp API

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Date:   Tue, 21 Apr 2020 11:23:02 +0800
From:   Jianyong Wu <jianyong.wu@....com>
To:     netdev@...r.kernel.org, yangbo.lu@....com, john.stultz@...aro.org,
        tglx@...utronix.de, pbonzini@...hat.com,
        sean.j.christopherson@...el.com, maz@...nel.org,
        richardcochran@...il.com, Mark.Rutland@....com, will@...nel.org,
        suzuki.poulose@....com, steven.price@....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, Kaly.Xin@....com, justin.he@....com,
        jianyong.wu@....com, nd@....com
Subject: [RFC PATCH v11 7/9] ptp: extend input argument for getcrosstimestamp API

sometimes we may need tell getcrosstimestamp call back how to perform
itself. Extending input arguments for getcrosstimestamp API to offer more
exquisite control for the operation.

Signed-off-by: Jianyong Wu <jianyong.wu@....com>
---
 drivers/clocksource/arm_arch_timer.c    | 2 +-
 drivers/net/ethernet/intel/e1000e/ptp.c | 3 ++-
 drivers/ptp/ptp_chardev.c               | 2 +-
 drivers/ptp/ptp_kvm.h                   | 2 +-
 drivers/ptp/ptp_kvm_x86.c               | 2 +-
 include/linux/ptp_clock_kernel.h        | 3 ++-
 6 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/drivers/clocksource/arm_arch_timer.c b/drivers/clocksource/arm_arch_timer.c
index 7a33993c0d05..47d69b3f2d9a 100644
--- a/drivers/clocksource/arm_arch_timer.c
+++ b/drivers/clocksource/arm_arch_timer.c
@@ -1645,7 +1645,7 @@ TIMER_ACPI_DECLARE(arch_timer, ACPI_SIG_GTDT, arch_timer_acpi_init);
 #if IS_ENABLED(CONFIG_PTP_1588_CLOCK_KVM)
 #include <linux/arm-smccc.h>
 int kvm_arch_ptp_get_crosststamp(unsigned long *cycle, struct timespec64 *ts,
-			      struct clocksource **cs)
+				 struct clocksource **cs, long *ctx)
 {
 	struct arm_smccc_res hvc_res;
 	ktime_t ktime_overall;
diff --git a/drivers/net/ethernet/intel/e1000e/ptp.c b/drivers/net/ethernet/intel/e1000e/ptp.c
index 439fda2f5368..e9270d98a497 100644
--- a/drivers/net/ethernet/intel/e1000e/ptp.c
+++ b/drivers/net/ethernet/intel/e1000e/ptp.c
@@ -150,7 +150,8 @@ static int e1000e_phc_get_syncdevicetime(ktime_t *device,
  * clock values in ns.
  **/
 static int e1000e_phc_getcrosststamp(struct ptp_clock_info *ptp,
-				     struct system_device_crosststamp *xtstamp)
+				     struct system_device_crosststamp *xtstamp,
+				     long *__unused)
 {
 	struct e1000_adapter *adapter = container_of(ptp, struct e1000_adapter,
 						     ptp_clock_info);
diff --git a/drivers/ptp/ptp_chardev.c b/drivers/ptp/ptp_chardev.c
index 93d574faf1fe..fef72f29f3c8 100644
--- a/drivers/ptp/ptp_chardev.c
+++ b/drivers/ptp/ptp_chardev.c
@@ -235,7 +235,7 @@ long ptp_ioctl(struct posix_clock *pc, unsigned int cmd, unsigned long arg)
 			err = -EOPNOTSUPP;
 			break;
 		}
-		err = ptp->info->getcrosststamp(ptp->info, &xtstamp);
+		err = ptp->info->getcrosststamp(ptp->info, &xtstamp, NULL);
 		if (err)
 			break;
 
diff --git a/drivers/ptp/ptp_kvm.h b/drivers/ptp/ptp_kvm.h
index 4bf1802bbeb8..ccceacbe8398 100644
--- a/drivers/ptp/ptp_kvm.h
+++ b/drivers/ptp/ptp_kvm.h
@@ -8,4 +8,4 @@
 int kvm_arch_ptp_init(void);
 int kvm_arch_ptp_get_clock(struct timespec64 *ts);
 int kvm_arch_ptp_get_crosststamp(unsigned long *cycle,
-		struct timespec64 *tspec, void *cs);
+		struct timespec64 *tspec, struct clocksource **cs, long *ctx);
diff --git a/drivers/ptp/ptp_kvm_x86.c b/drivers/ptp/ptp_kvm_x86.c
index 55417b3b282d..f372555671eb 100644
--- a/drivers/ptp/ptp_kvm_x86.c
+++ b/drivers/ptp/ptp_kvm_x86.c
@@ -55,7 +55,7 @@ int kvm_arch_ptp_get_clock(struct timespec64 *ts)
 }
 
 int kvm_arch_ptp_get_crosststamp(unsigned long *cycle, struct timespec64 *tspec,
-			      struct clocksource **cs)
+			      struct clocksource **cs, void *ctx)
 {
 	unsigned long ret;
 	unsigned int version;
diff --git a/include/linux/ptp_clock_kernel.h b/include/linux/ptp_clock_kernel.h
index 121a7eda4593..1638ad75b5e5 100644
--- a/include/linux/ptp_clock_kernel.h
+++ b/include/linux/ptp_clock_kernel.h
@@ -133,7 +133,8 @@ struct ptp_clock_info {
 	int (*gettimex64)(struct ptp_clock_info *ptp, struct timespec64 *ts,
 			  struct ptp_system_timestamp *sts);
 	int (*getcrosststamp)(struct ptp_clock_info *ptp,
-			      struct system_device_crosststamp *cts);
+			      struct system_device_crosststamp *cts,
+			      long *flag);
 	int (*settime64)(struct ptp_clock_info *p, const struct timespec64 *ts);
 	int (*enable)(struct ptp_clock_info *ptp,
 		      struct ptp_clock_request *request, int on);
-- 
2.17.1