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* [PATCH v5 1/3] timekeeping: use proper ktime_add when adding nsecs in coarse offset
@ 2019-06-21 20:32 Jason A. Donenfeld
  2019-06-21 20:32 ` [PATCH v5 2/3] timekeeping: use proper clock specifier names in functions Jason A. Donenfeld
                   ` (2 more replies)
  0 siblings, 3 replies; 7+ messages in thread
From: Jason A. Donenfeld @ 2019-06-21 20:32 UTC (permalink / raw)
  To: linux-kernel; +Cc: Jason A. Donenfeld, Arnd Bergmann, Thomas Gleixner

While this doesn't actually amount to a real difference, since the macro
evaluates to the same thing, every place else operates on ktime_t using
these functions, so let's not break the pattern.

Fixes: e3ff9c3678b4 ("timekeeping: Repair ktime_get_coarse*() granularity")
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
---
 kernel/time/timekeeping.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index 44b726bab4bd..d911c8470149 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -819,7 +819,7 @@ ktime_t ktime_get_coarse_with_offset(enum tk_offsets offs)
 
 	} while (read_seqcount_retry(&tk_core.seq, seq));
 
-	return base + nsecs;
+	return ktime_add_ns(base, nsecs);
 }
 EXPORT_SYMBOL_GPL(ktime_get_coarse_with_offset);
 
-- 
2.21.0


^ permalink raw reply related	[flat|nested] 7+ messages in thread
* [PATCH v5 2/3] timekeeping: use proper clock specifier names in functions
  2019-06-21 20:32 [PATCH v5 1/3] timekeeping: use proper ktime_add when adding nsecs in coarse offset Jason A. Donenfeld
@ 2019-06-21 20:32 ` Jason A. Donenfeld
  2019-06-22 19:29   ` [tip:timers/core] timekeeping: Use " tip-bot for Jason A. Donenfeld
  2019-06-21 20:32 ` [PATCH v5 3/3] timekeeping: add missing _ns functions for coarse accessors Jason A. Donenfeld
  2019-06-22 19:28 ` [tip:timers/core] timekeeping: Use proper ktime_add when adding nsecs in coarse offset tip-bot for Jason A. Donenfeld
  2 siblings, 1 reply; 7+ messages in thread
From: Jason A. Donenfeld @ 2019-06-21 20:32 UTC (permalink / raw)
  To: linux-kernel; +Cc: Jason A. Donenfeld, Arnd Bergmann, Thomas Gleixner

This makes boot uniformly boottime and tai uniformly clocktai, to
address the remaining oversights.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
---
 Documentation/core-api/timekeeping.rst               |  2 +-
 arch/x86/kvm/pmu.c                                   |  4 ++--
 arch/x86/kvm/x86.c                                   | 12 ++++++------
 drivers/gpu/drm/amd/amdkfd/kfd_chardev.c             |  2 +-
 drivers/iio/humidity/dht11.c                         |  8 ++++----
 drivers/iio/industrialio-core.c                      |  4 ++--
 drivers/infiniband/hw/mlx4/alias_GUID.c              |  6 +++---
 drivers/leds/trigger/ledtrig-activity.c              |  2 +-
 .../net/wireless/intel/iwlwifi/mvm/ftm-initiator.c   |  2 +-
 drivers/net/wireless/intel/iwlwifi/mvm/rx.c          |  2 +-
 drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c        |  2 +-
 drivers/net/wireless/intel/iwlwifi/mvm/utils.c       |  2 +-
 drivers/net/wireless/mac80211_hwsim.c                |  2 +-
 drivers/net/wireless/ti/wlcore/main.c                |  2 +-
 drivers/net/wireless/ti/wlcore/rx.c                  |  2 +-
 drivers/net/wireless/ti/wlcore/tx.c                  |  2 +-
 drivers/net/wireless/virt_wifi.c                     |  2 +-
 include/linux/timekeeping.h                          |  4 ++--
 include/net/cfg80211.h                               |  2 +-
 kernel/bpf/syscall.c                                 |  2 +-
 kernel/events/core.c                                 |  4 ++--
 kernel/fork.c                                        |  2 +-
 22 files changed, 36 insertions(+), 36 deletions(-)

diff --git a/Documentation/core-api/timekeeping.rst b/Documentation/core-api/timekeeping.rst
index 93cbeb9daec0..4d92b1ac8024 100644
--- a/Documentation/core-api/timekeeping.rst
+++ b/Documentation/core-api/timekeeping.rst
@@ -65,7 +65,7 @@ different format depending on what is required by the user:
 .. c:function:: u64 ktime_get_ns( void )
 		u64 ktime_get_boottime_ns( void )
 		u64 ktime_get_real_ns( void )
-		u64 ktime_get_tai_ns( void )
+		u64 ktime_get_clocktai_ns( void )
 		u64 ktime_get_raw_ns( void )
 
 	Same as the plain ktime_get functions, but returning a u64 number
diff --git a/arch/x86/kvm/pmu.c b/arch/x86/kvm/pmu.c
index dd745b58ffd8..1aea628ef6b8 100644
--- a/arch/x86/kvm/pmu.c
+++ b/arch/x86/kvm/pmu.c
@@ -264,10 +264,10 @@ static int kvm_pmu_rdpmc_vmware(struct kvm_vcpu *vcpu, unsigned idx, u64 *data)
 		ctr_val = rdtsc();
 		break;
 	case VMWARE_BACKDOOR_PMC_REAL_TIME:
-		ctr_val = ktime_get_boot_ns();
+		ctr_val = ktime_get_boottime_ns();
 		break;
 	case VMWARE_BACKDOOR_PMC_APPARENT_TIME:
-		ctr_val = ktime_get_boot_ns() +
+		ctr_val = ktime_get_boottime_ns() +
 			vcpu->kvm->arch.kvmclock_offset;
 		break;
 	default:
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 83aefd759846..81a0914a1ec1 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -1731,7 +1731,7 @@ void kvm_write_tsc(struct kvm_vcpu *vcpu, struct msr_data *msr)
 
 	raw_spin_lock_irqsave(&kvm->arch.tsc_write_lock, flags);
 	offset = kvm_compute_tsc_offset(vcpu, data);
-	ns = ktime_get_boot_ns();
+	ns = ktime_get_boottime_ns();
 	elapsed = ns - kvm->arch.last_tsc_nsec;
 
 	if (vcpu->arch.virtual_tsc_khz) {
@@ -2073,7 +2073,7 @@ u64 get_kvmclock_ns(struct kvm *kvm)
 	spin_lock(&ka->pvclock_gtod_sync_lock);
 	if (!ka->use_master_clock) {
 		spin_unlock(&ka->pvclock_gtod_sync_lock);
-		return ktime_get_boot_ns() + ka->kvmclock_offset;
+		return ktime_get_boottime_ns() + ka->kvmclock_offset;
 	}
 
 	hv_clock.tsc_timestamp = ka->master_cycle_now;
@@ -2089,7 +2089,7 @@ u64 get_kvmclock_ns(struct kvm *kvm)
 				   &hv_clock.tsc_to_system_mul);
 		ret = __pvclock_read_cycles(&hv_clock, rdtsc());
 	} else
-		ret = ktime_get_boot_ns() + ka->kvmclock_offset;
+		ret = ktime_get_boottime_ns() + ka->kvmclock_offset;
 
 	put_cpu();
 
@@ -2188,7 +2188,7 @@ static int kvm_guest_time_update(struct kvm_vcpu *v)
 	}
 	if (!use_master_clock) {
 		host_tsc = rdtsc();
-		kernel_ns = ktime_get_boot_ns();
+		kernel_ns = ktime_get_boottime_ns();
 	}
 
 	tsc_timestamp = kvm_read_l1_tsc(v, host_tsc);
@@ -9018,7 +9018,7 @@ int kvm_arch_hardware_enable(void)
 	 * before any KVM threads can be running.  Unfortunately, we can't
 	 * bring the TSCs fully up to date with real time, as we aren't yet far
 	 * enough into CPU bringup that we know how much real time has actually
-	 * elapsed; our helper function, ktime_get_boot_ns() will be using boot
+	 * elapsed; our helper function, ktime_get_boottime_ns() will be using boot
 	 * variables that haven't been updated yet.
 	 *
 	 * So we simply find the maximum observed TSC above, then record the
@@ -9246,7 +9246,7 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
 	mutex_init(&kvm->arch.apic_map_lock);
 	spin_lock_init(&kvm->arch.pvclock_gtod_sync_lock);
 
-	kvm->arch.kvmclock_offset = -ktime_get_boot_ns();
+	kvm->arch.kvmclock_offset = -ktime_get_boottime_ns();
 	pvclock_update_vm_gtod_copy(kvm);
 
 	kvm->arch.guest_can_read_msr_platform_info = true;
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
index 083bd8114db1..dd6b4b0b5f30 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
@@ -837,7 +837,7 @@ static int kfd_ioctl_get_clock_counters(struct file *filep,
 
 	/* No access to rdtsc. Using raw monotonic time */
 	args->cpu_clock_counter = ktime_get_raw_ns();
-	args->system_clock_counter = ktime_get_boot_ns();
+	args->system_clock_counter = ktime_get_boottime_ns();
 
 	/* Since the counter is in nano-seconds we use 1GHz frequency */
 	args->system_clock_freq = 1000000000;
diff --git a/drivers/iio/humidity/dht11.c b/drivers/iio/humidity/dht11.c
index c8159205c77d..4e22b3c3e488 100644
--- a/drivers/iio/humidity/dht11.c
+++ b/drivers/iio/humidity/dht11.c
@@ -149,7 +149,7 @@ static int dht11_decode(struct dht11 *dht11, int offset)
 		return -EIO;
 	}
 
-	dht11->timestamp = ktime_get_boot_ns();
+	dht11->timestamp = ktime_get_boottime_ns();
 	if (hum_int < 4) {  /* DHT22: 100000 = (3*256+232)*100 */
 		dht11->temperature = (((temp_int & 0x7f) << 8) + temp_dec) *
 					((temp_int & 0x80) ? -100 : 100);
@@ -177,7 +177,7 @@ static irqreturn_t dht11_handle_irq(int irq, void *data)
 
 	/* TODO: Consider making the handler safe for IRQ sharing */
 	if (dht11->num_edges < DHT11_EDGES_PER_READ && dht11->num_edges >= 0) {
-		dht11->edges[dht11->num_edges].ts = ktime_get_boot_ns();
+		dht11->edges[dht11->num_edges].ts = ktime_get_boottime_ns();
 		dht11->edges[dht11->num_edges++].value =
 						gpio_get_value(dht11->gpio);
 
@@ -196,7 +196,7 @@ static int dht11_read_raw(struct iio_dev *iio_dev,
 	int ret, timeres, offset;
 
 	mutex_lock(&dht11->lock);
-	if (dht11->timestamp + DHT11_DATA_VALID_TIME < ktime_get_boot_ns()) {
+	if (dht11->timestamp + DHT11_DATA_VALID_TIME < ktime_get_boottime_ns()) {
 		timeres = ktime_get_resolution_ns();
 		dev_dbg(dht11->dev, "current timeresolution: %dns\n", timeres);
 		if (timeres > DHT11_MIN_TIMERES) {
@@ -322,7 +322,7 @@ static int dht11_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
-	dht11->timestamp = ktime_get_boot_ns() - DHT11_DATA_VALID_TIME - 1;
+	dht11->timestamp = ktime_get_boottime_ns() - DHT11_DATA_VALID_TIME - 1;
 	dht11->num_edges = -1;
 
 	platform_set_drvdata(pdev, iio);
diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
index f5a4581302f4..16008f862d19 100644
--- a/drivers/iio/industrialio-core.c
+++ b/drivers/iio/industrialio-core.c
@@ -231,9 +231,9 @@ s64 iio_get_time_ns(const struct iio_dev *indio_dev)
 		ktime_get_coarse_ts64(&tp);
 		return timespec64_to_ns(&tp);
 	case CLOCK_BOOTTIME:
-		return ktime_get_boot_ns();
+		return ktime_get_boottime_ns();
 	case CLOCK_TAI:
-		return ktime_get_tai_ns();
+		return ktime_get_clocktai_ns();
 	default:
 		BUG();
 	}
diff --git a/drivers/infiniband/hw/mlx4/alias_GUID.c b/drivers/infiniband/hw/mlx4/alias_GUID.c
index 2a0b59a4b6eb..cca414ecfcd5 100644
--- a/drivers/infiniband/hw/mlx4/alias_GUID.c
+++ b/drivers/infiniband/hw/mlx4/alias_GUID.c
@@ -310,7 +310,7 @@ static void aliasguid_query_handler(int status,
 	if (status) {
 		pr_debug("(port: %d) failed: status = %d\n",
 			 cb_ctx->port, status);
-		rec->time_to_run = ktime_get_boot_ns() + 1 * NSEC_PER_SEC;
+		rec->time_to_run = ktime_get_boottime_ns() + 1 * NSEC_PER_SEC;
 		goto out;
 	}
 
@@ -416,7 +416,7 @@ static void aliasguid_query_handler(int status,
 			 be64_to_cpu((__force __be64)rec->guid_indexes),
 			 be64_to_cpu((__force __be64)applied_guid_indexes),
 			 be64_to_cpu((__force __be64)declined_guid_indexes));
-		rec->time_to_run = ktime_get_boot_ns() +
+		rec->time_to_run = ktime_get_boottime_ns() +
 			resched_delay_sec * NSEC_PER_SEC;
 	} else {
 		rec->status = MLX4_GUID_INFO_STATUS_SET;
@@ -709,7 +709,7 @@ static int get_low_record_time_index(struct mlx4_ib_dev *dev, u8 port,
 		}
 	}
 	if (resched_delay_sec) {
-		u64 curr_time = ktime_get_boot_ns();
+		u64 curr_time = ktime_get_boottime_ns();
 
 		*resched_delay_sec = (low_record_time < curr_time) ? 0 :
 			div_u64((low_record_time - curr_time), NSEC_PER_SEC);
diff --git a/drivers/leds/trigger/ledtrig-activity.c b/drivers/leds/trigger/ledtrig-activity.c
index bcbf41c90c30..0f130dd998b3 100644
--- a/drivers/leds/trigger/ledtrig-activity.c
+++ b/drivers/leds/trigger/ledtrig-activity.c
@@ -73,7 +73,7 @@ static void led_activity_function(struct timer_list *t)
 	 * down to 16us, ensuring we won't overflow 32-bit computations below
 	 * even up to 3k CPUs, while keeping divides cheap on smaller systems.
 	 */
-	curr_boot = ktime_get_boot_ns() * cpus;
+	curr_boot = ktime_get_boottime_ns() * cpus;
 	diff_boot = (curr_boot - activity_data->last_boot) >> 16;
 	diff_used = (curr_used - activity_data->last_used) >> 16;
 	activity_data->last_boot = curr_boot;
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/ftm-initiator.c b/drivers/net/wireless/intel/iwlwifi/mvm/ftm-initiator.c
index fec38a47696e..9f4b117db9d7 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/ftm-initiator.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/ftm-initiator.c
@@ -93,7 +93,7 @@ void iwl_mvm_ftm_restart(struct iwl_mvm *mvm)
 	struct cfg80211_pmsr_result result = {
 		.status = NL80211_PMSR_STATUS_FAILURE,
 		.final = 1,
-		.host_time = ktime_get_boot_ns(),
+		.host_time = ktime_get_boottime_ns(),
 		.type = NL80211_PMSR_TYPE_FTM,
 	};
 	int i;
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/rx.c b/drivers/net/wireless/intel/iwlwifi/mvm/rx.c
index fbd3014e8b82..160b0db27103 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/rx.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/rx.c
@@ -555,7 +555,7 @@ void iwl_mvm_rx_rx_mpdu(struct iwl_mvm *mvm, struct napi_struct *napi,
 
 	if (unlikely(ieee80211_is_beacon(hdr->frame_control) ||
 		     ieee80211_is_probe_resp(hdr->frame_control)))
-		rx_status->boottime_ns = ktime_get_boot_ns();
+		rx_status->boottime_ns = ktime_get_boottime_ns();
 
 	/* Take a reference briefly to kick off a d0i3 entry delay so
 	 * we can handle bursts of RX packets without toggling the
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c b/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c
index 1824566d08fc..64f950501287 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c
@@ -1684,7 +1684,7 @@ void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi,
 
 		if (unlikely(ieee80211_is_beacon(hdr->frame_control) ||
 			     ieee80211_is_probe_resp(hdr->frame_control)))
-			rx_status->boottime_ns = ktime_get_boot_ns();
+			rx_status->boottime_ns = ktime_get_boottime_ns();
 	}
 
 	if (iwl_mvm_create_skb(mvm, skb, hdr, len, crypt_len, rxb)) {
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/utils.c b/drivers/net/wireless/intel/iwlwifi/mvm/utils.c
index cc56ab88fb43..72cd5b3f2d8d 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/utils.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/utils.c
@@ -1445,7 +1445,7 @@ void iwl_mvm_get_sync_time(struct iwl_mvm *mvm, u32 *gp2, u64 *boottime)
 	}
 
 	*gp2 = iwl_mvm_get_systime(mvm);
-	*boottime = ktime_get_boot_ns();
+	*boottime = ktime_get_boottime_ns();
 
 	if (!ps_disabled) {
 		mvm->ps_disabled = ps_disabled;
diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
index b5274d1f30fa..3233f5dd6797 100644
--- a/drivers/net/wireless/mac80211_hwsim.c
+++ b/drivers/net/wireless/mac80211_hwsim.c
@@ -1274,7 +1274,7 @@ static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
 	 */
 	if (ieee80211_is_beacon(hdr->frame_control) ||
 	    ieee80211_is_probe_resp(hdr->frame_control)) {
-		rx_status.boottime_ns = ktime_get_boot_ns();
+		rx_status.boottime_ns = ktime_get_boottime_ns();
 		now = data->abs_bcn_ts;
 	} else {
 		now = mac80211_hwsim_get_tsf_raw();
diff --git a/drivers/net/wireless/ti/wlcore/main.c b/drivers/net/wireless/ti/wlcore/main.c
index c9a485ecee7b..b74dc8bc9755 100644
--- a/drivers/net/wireless/ti/wlcore/main.c
+++ b/drivers/net/wireless/ti/wlcore/main.c
@@ -483,7 +483,7 @@ static int wlcore_fw_status(struct wl1271 *wl, struct wl_fw_status *status)
 	}
 
 	/* update the host-chipset time offset */
-	wl->time_offset = (ktime_get_boot_ns() >> 10) -
+	wl->time_offset = (ktime_get_boottime_ns() >> 10) -
 		(s64)(status->fw_localtime);
 
 	wl->fw_fast_lnk_map = status->link_fast_bitmap;
diff --git a/drivers/net/wireless/ti/wlcore/rx.c b/drivers/net/wireless/ti/wlcore/rx.c
index d96bb602fae6..307fab21050b 100644
--- a/drivers/net/wireless/ti/wlcore/rx.c
+++ b/drivers/net/wireless/ti/wlcore/rx.c
@@ -93,7 +93,7 @@ static void wl1271_rx_status(struct wl1271 *wl,
 	}
 
 	if (beacon || probe_rsp)
-		status->boottime_ns = ktime_get_boot_ns();
+		status->boottime_ns = ktime_get_boottime_ns();
 
 	if (beacon)
 		wlcore_set_pending_regdomain_ch(wl, (u16)desc->channel,
diff --git a/drivers/net/wireless/ti/wlcore/tx.c b/drivers/net/wireless/ti/wlcore/tx.c
index 057c6be330e7..90e56d4c3df3 100644
--- a/drivers/net/wireless/ti/wlcore/tx.c
+++ b/drivers/net/wireless/ti/wlcore/tx.c
@@ -273,7 +273,7 @@ static void wl1271_tx_fill_hdr(struct wl1271 *wl, struct wl12xx_vif *wlvif,
 	}
 
 	/* configure packet life time */
-	hosttime = (ktime_get_boot_ns() >> 10);
+	hosttime = (ktime_get_boottime_ns() >> 10);
 	desc->start_time = cpu_to_le32(hosttime - wl->time_offset);
 
 	is_dummy = wl12xx_is_dummy_packet(wl, skb);
diff --git a/drivers/net/wireless/virt_wifi.c b/drivers/net/wireless/virt_wifi.c
index 606999f102eb..be92e1220284 100644
--- a/drivers/net/wireless/virt_wifi.c
+++ b/drivers/net/wireless/virt_wifi.c
@@ -172,7 +172,7 @@ static void virt_wifi_scan_result(struct work_struct *work)
 	informed_bss = cfg80211_inform_bss(wiphy, &channel_5ghz,
 					   CFG80211_BSS_FTYPE_PRESP,
 					   fake_router_bssid,
-					   ktime_get_boot_ns(),
+					   ktime_get_boottime_ns(),
 					   WLAN_CAPABILITY_ESS, 0,
 					   (void *)&ssid, sizeof(ssid),
 					   DBM_TO_MBM(-50), GFP_KERNEL);
diff --git a/include/linux/timekeeping.h b/include/linux/timekeeping.h
index a8ab0f143ac4..fd6123722ea8 100644
--- a/include/linux/timekeeping.h
+++ b/include/linux/timekeeping.h
@@ -131,12 +131,12 @@ static inline u64 ktime_get_real_ns(void)
 	return ktime_to_ns(ktime_get_real());
 }
 
-static inline u64 ktime_get_boot_ns(void)
+static inline u64 ktime_get_boottime_ns(void)
 {
 	return ktime_to_ns(ktime_get_boottime());
 }
 
-static inline u64 ktime_get_tai_ns(void)
+static inline u64 ktime_get_clocktai_ns(void)
 {
 	return ktime_to_ns(ktime_get_clocktai());
 }
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 948139690a58..9d225e56777d 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -2010,7 +2010,7 @@ enum cfg80211_signal_type {
  *	received by the device (not just by the host, in case it was
  *	buffered on the device) and be accurate to about 10ms.
  *	If the frame isn't buffered, just passing the return value of
- *	ktime_get_boot_ns() is likely appropriate.
+ *	ktime_get_boottime_ns() is likely appropriate.
  * @parent_tsf: the time at the start of reception of the first octet of the
  *	timestamp field of the frame. The time is the TSF of the BSS specified
  *	by %parent_bssid.
diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c
index 42d17f730780..5b30f8baaf02 100644
--- a/kernel/bpf/syscall.c
+++ b/kernel/bpf/syscall.c
@@ -1668,7 +1668,7 @@ static int bpf_prog_load(union bpf_attr *attr, union bpf_attr __user *uattr)
 	if (err < 0)
 		goto free_prog;
 
-	prog->aux->load_time = ktime_get_boot_ns();
+	prog->aux->load_time = ktime_get_boottime_ns();
 	err = bpf_obj_name_cpy(prog->aux->name, attr->prog_name);
 	if (err)
 		goto free_prog;
diff --git a/kernel/events/core.c b/kernel/events/core.c
index abbd4b3b96c2..e2d014395fc6 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -10680,11 +10680,11 @@ static int perf_event_set_clock(struct perf_event *event, clockid_t clk_id)
 		break;
 
 	case CLOCK_BOOTTIME:
-		event->clock = &ktime_get_boot_ns;
+		event->clock = &ktime_get_boottime_ns;
 		break;
 
 	case CLOCK_TAI:
-		event->clock = &ktime_get_tai_ns;
+		event->clock = &ktime_get_clocktai_ns;
 		break;
 
 	default:
diff --git a/kernel/fork.c b/kernel/fork.c
index 75675b9bf6df..4722f1a320bf 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -2139,7 +2139,7 @@ static __latent_entropy struct task_struct *copy_process(
 	 */
 
 	p->start_time = ktime_get_ns();
-	p->real_start_time = ktime_get_boot_ns();
+	p->real_start_time = ktime_get_boottime_ns();
 
 	/*
 	 * Make it visible to the rest of the system, but dont wake it up yet.
-- 
2.21.0


^ permalink raw reply related	[flat|nested] 7+ messages in thread
* [PATCH v5 3/3] timekeeping: add missing _ns functions for coarse accessors
  2019-06-21 20:32 [PATCH v5 1/3] timekeeping: use proper ktime_add when adding nsecs in coarse offset Jason A. Donenfeld
  2019-06-21 20:32 ` [PATCH v5 2/3] timekeeping: use proper clock specifier names in functions Jason A. Donenfeld
@ 2019-06-21 20:32 ` Jason A. Donenfeld
  2019-06-21 20:45   ` Arnd Bergmann
  2019-06-22 19:29   ` [tip:timers/core] timekeeping: Add " tip-bot for Jason A. Donenfeld
  2019-06-22 19:28 ` [tip:timers/core] timekeeping: Use proper ktime_add when adding nsecs in coarse offset tip-bot for Jason A. Donenfeld
  2 siblings, 2 replies; 7+ messages in thread
From: Jason A. Donenfeld @ 2019-06-21 20:32 UTC (permalink / raw)
  To: linux-kernel; +Cc: Jason A. Donenfeld, Arnd Bergmann, Thomas Gleixner

This further unifies the accessors for the fast and coarse functions, so
that the same types of functions are available for each. There was also
a bit of confusion with the documentation, which prior advertised a
function that has never existed. Finally, the vanilla ktime_get_coarse()
was omitted from the API originally, so this fills this oversight.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
---
 Documentation/core-api/timekeeping.rst | 10 +++++++---
 include/linux/timekeeping.h            | 27 ++++++++++++++++++++++++++
 2 files changed, 34 insertions(+), 3 deletions(-)

diff --git a/Documentation/core-api/timekeeping.rst b/Documentation/core-api/timekeeping.rst
index 4d92b1ac8024..15fc58e85ef9 100644
--- a/Documentation/core-api/timekeeping.rst
+++ b/Documentation/core-api/timekeeping.rst
@@ -99,16 +99,20 @@ Coarse and fast_ns access
 
 Some additional variants exist for more specialized cases:
 
-.. c:function:: ktime_t ktime_get_coarse_boottime( void )
+.. c:function:: ktime_t ktime_get_coarse( void )
+		ktime_t ktime_get_coarse_boottime( void )
 		ktime_t ktime_get_coarse_real( void )
 		ktime_t ktime_get_coarse_clocktai( void )
-		ktime_t ktime_get_coarse_raw( void )
+
+.. c:function:: u64 ktime_get_coarse_ns( void )
+		u64 ktime_get_coarse_boot_ns( void )
+		u64 ktime_get_coarse_real_ns( void )
+		u64 ktime_get_coarse_clocktai_ns( void )
 
 .. c:function:: void ktime_get_coarse_ts64( struct timespec64 * )
 		void ktime_get_coarse_boottime_ts64( struct timespec64 * )
 		void ktime_get_coarse_real_ts64( struct timespec64 * )
 		void ktime_get_coarse_clocktai_ts64( struct timespec64 * )
-		void ktime_get_coarse_raw_ts64( struct timespec64 * )
 
 	These are quicker than the non-coarse versions, but less accurate,
 	corresponding to CLOCK_MONONOTNIC_COARSE and CLOCK_REALTIME_COARSE
diff --git a/include/linux/timekeeping.h b/include/linux/timekeeping.h
index fd6123722ea8..1435d928fcbf 100644
--- a/include/linux/timekeeping.h
+++ b/include/linux/timekeeping.h
@@ -113,6 +113,33 @@ static inline ktime_t ktime_get_coarse_clocktai(void)
 	return ktime_get_coarse_with_offset(TK_OFFS_TAI);
 }
 
+static inline ktime_t ktime_get_coarse(void)
+{
+	struct timespec64 ts;
+	ktime_get_coarse_ts64(&ts);
+	return timespec64_to_ktime(ts);
+}
+
+static inline u64 ktime_get_coarse_ns(void)
+{
+	return ktime_to_ns(ktime_get_coarse());
+}
+
+static inline u64 ktime_get_coarse_real_ns(void)
+{
+	return ktime_to_ns(ktime_get_coarse_real());
+}
+
+static inline u64 ktime_get_coarse_boot_ns(void)
+{
+	return ktime_to_ns(ktime_get_coarse_boottime());
+}
+
+static inline u64 ktime_get_coarse_clocktai_ns(void)
+{
+	return ktime_to_ns(ktime_get_coarse_clocktai());
+}
+
 /**
  * ktime_mono_to_real - Convert monotonic time to clock realtime
  */
-- 
2.21.0


^ permalink raw reply related	[flat|nested] 7+ messages in thread
* Re: [PATCH v5 3/3] timekeeping: add missing _ns functions for coarse accessors
  2019-06-21 20:32 ` [PATCH v5 3/3] timekeeping: add missing _ns functions for coarse accessors Jason A. Donenfeld
@ 2019-06-21 20:45   ` Arnd Bergmann
  2019-06-22 19:29   ` [tip:timers/core] timekeeping: Add " tip-bot for Jason A. Donenfeld
  1 sibling, 0 replies; 7+ messages in thread
From: Arnd Bergmann @ 2019-06-21 20:45 UTC (permalink / raw)
  To: Jason A. Donenfeld; +Cc: Linux Kernel Mailing List, Thomas Gleixner

On Fri, Jun 21, 2019 at 10:33 PM Jason A. Donenfeld <Jason@zx2c4.com> wrote:
>
> This further unifies the accessors for the fast and coarse functions, so
> that the same types of functions are available for each. There was also
> a bit of confusion with the documentation, which prior advertised a
> function that has never existed. Finally, the vanilla ktime_get_coarse()
> was omitted from the API originally, so this fills this oversight.
>
> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
> Cc: Arnd Bergmann <arnd@arndb.de>


All three patches

Reviewed-by: Arnd Bergmann <arnd@arndb.de>

Thanks for the cleanup and your patience.

        Arnd

^ permalink raw reply	[flat|nested] 7+ messages in thread
* [tip:timers/core] timekeeping: Use proper ktime_add when adding nsecs in coarse offset
  2019-06-21 20:32 [PATCH v5 1/3] timekeeping: use proper ktime_add when adding nsecs in coarse offset Jason A. Donenfeld
  2019-06-21 20:32 ` [PATCH v5 2/3] timekeeping: use proper clock specifier names in functions Jason A. Donenfeld
  2019-06-21 20:32 ` [PATCH v5 3/3] timekeeping: add missing _ns functions for coarse accessors Jason A. Donenfeld
@ 2019-06-22 19:28 ` tip-bot for Jason A. Donenfeld
  2 siblings, 0 replies; 7+ messages in thread
From: tip-bot for Jason A. Donenfeld @ 2019-06-22 19:28 UTC (permalink / raw)
  To: linux-tip-commits; +Cc: linux-kernel, tglx, arnd, mingo, hpa, Jason

Commit-ID:  0354c1a3cdf31f44b035cfad14d32282e815a572
Gitweb:     https://git.kernel.org/tip/0354c1a3cdf31f44b035cfad14d32282e815a572
Author:     Jason A. Donenfeld <Jason@zx2c4.com>
AuthorDate: Fri, 21 Jun 2019 22:32:47 +0200
Committer:  Thomas Gleixner <tglx@linutronix.de>
CommitDate: Sat, 22 Jun 2019 12:11:27 +0200

timekeeping: Use proper ktime_add when adding nsecs in coarse offset

While this doesn't actually amount to a real difference, since the macro
evaluates to the same thing, every place else operates on ktime_t using
these functions, so let's not break the pattern.

Fixes: e3ff9c3678b4 ("timekeeping: Repair ktime_get_coarse*() granularity")
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lkml.kernel.org/r/20190621203249.3909-1-Jason@zx2c4.com

---
 kernel/time/timekeeping.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index 44b726bab4bd..d911c8470149 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -819,7 +819,7 @@ ktime_t ktime_get_coarse_with_offset(enum tk_offsets offs)
 
 	} while (read_seqcount_retry(&tk_core.seq, seq));
 
-	return base + nsecs;
+	return ktime_add_ns(base, nsecs);
 }
 EXPORT_SYMBOL_GPL(ktime_get_coarse_with_offset);
 

^ permalink raw reply related	[flat|nested] 7+ messages in thread
* [tip:timers/core] timekeeping: Use proper clock specifier names in functions
  2019-06-21 20:32 ` [PATCH v5 2/3] timekeeping: use proper clock specifier names in functions Jason A. Donenfeld
@ 2019-06-22 19:29   ` tip-bot for Jason A. Donenfeld
  0 siblings, 0 replies; 7+ messages in thread
From: tip-bot for Jason A. Donenfeld @ 2019-06-22 19:29 UTC (permalink / raw)
  To: linux-tip-commits; +Cc: Jason, arnd, mingo, tglx, linux-kernel, hpa

Commit-ID:  9285ec4c8b61d4930a575081abeba2cd4f449a74
Gitweb:     https://git.kernel.org/tip/9285ec4c8b61d4930a575081abeba2cd4f449a74
Author:     Jason A. Donenfeld <Jason@zx2c4.com>
AuthorDate: Fri, 21 Jun 2019 22:32:48 +0200
Committer:  Thomas Gleixner <tglx@linutronix.de>
CommitDate: Sat, 22 Jun 2019 12:11:27 +0200

timekeeping: Use proper clock specifier names in functions

This makes boot uniformly boottime and tai uniformly clocktai, to
address the remaining oversights.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lkml.kernel.org/r/20190621203249.3909-2-Jason@zx2c4.com

---
 Documentation/core-api/timekeeping.rst                 |  2 +-
 arch/x86/kvm/pmu.c                                     |  4 ++--
 arch/x86/kvm/x86.c                                     | 12 ++++++------
 drivers/gpu/drm/amd/amdkfd/kfd_chardev.c               |  2 +-
 drivers/iio/humidity/dht11.c                           |  8 ++++----
 drivers/iio/industrialio-core.c                        |  4 ++--
 drivers/infiniband/hw/mlx4/alias_GUID.c                |  6 +++---
 drivers/leds/trigger/ledtrig-activity.c                |  2 +-
 drivers/net/wireless/intel/iwlwifi/mvm/ftm-initiator.c |  2 +-
 drivers/net/wireless/intel/iwlwifi/mvm/rx.c            |  2 +-
 drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c          |  2 +-
 drivers/net/wireless/intel/iwlwifi/mvm/utils.c         |  2 +-
 drivers/net/wireless/mac80211_hwsim.c                  |  2 +-
 drivers/net/wireless/ti/wlcore/main.c                  |  2 +-
 drivers/net/wireless/ti/wlcore/rx.c                    |  2 +-
 drivers/net/wireless/ti/wlcore/tx.c                    |  2 +-
 drivers/net/wireless/virt_wifi.c                       |  2 +-
 include/linux/timekeeping.h                            |  4 ++--
 include/net/cfg80211.h                                 |  2 +-
 kernel/bpf/syscall.c                                   |  2 +-
 kernel/events/core.c                                   |  4 ++--
 kernel/fork.c                                          |  2 +-
 22 files changed, 36 insertions(+), 36 deletions(-)

diff --git a/Documentation/core-api/timekeeping.rst b/Documentation/core-api/timekeeping.rst
index 93cbeb9daec0..4d92b1ac8024 100644
--- a/Documentation/core-api/timekeeping.rst
+++ b/Documentation/core-api/timekeeping.rst
@@ -65,7 +65,7 @@ different format depending on what is required by the user:
 .. c:function:: u64 ktime_get_ns( void )
 		u64 ktime_get_boottime_ns( void )
 		u64 ktime_get_real_ns( void )
-		u64 ktime_get_tai_ns( void )
+		u64 ktime_get_clocktai_ns( void )
 		u64 ktime_get_raw_ns( void )
 
 	Same as the plain ktime_get functions, but returning a u64 number
diff --git a/arch/x86/kvm/pmu.c b/arch/x86/kvm/pmu.c
index dd745b58ffd8..1aea628ef6b8 100644
--- a/arch/x86/kvm/pmu.c
+++ b/arch/x86/kvm/pmu.c
@@ -264,10 +264,10 @@ static int kvm_pmu_rdpmc_vmware(struct kvm_vcpu *vcpu, unsigned idx, u64 *data)
 		ctr_val = rdtsc();
 		break;
 	case VMWARE_BACKDOOR_PMC_REAL_TIME:
-		ctr_val = ktime_get_boot_ns();
+		ctr_val = ktime_get_boottime_ns();
 		break;
 	case VMWARE_BACKDOOR_PMC_APPARENT_TIME:
-		ctr_val = ktime_get_boot_ns() +
+		ctr_val = ktime_get_boottime_ns() +
 			vcpu->kvm->arch.kvmclock_offset;
 		break;
 	default:
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 83aefd759846..81a0914a1ec1 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -1731,7 +1731,7 @@ void kvm_write_tsc(struct kvm_vcpu *vcpu, struct msr_data *msr)
 
 	raw_spin_lock_irqsave(&kvm->arch.tsc_write_lock, flags);
 	offset = kvm_compute_tsc_offset(vcpu, data);
-	ns = ktime_get_boot_ns();
+	ns = ktime_get_boottime_ns();
 	elapsed = ns - kvm->arch.last_tsc_nsec;
 
 	if (vcpu->arch.virtual_tsc_khz) {
@@ -2073,7 +2073,7 @@ u64 get_kvmclock_ns(struct kvm *kvm)
 	spin_lock(&ka->pvclock_gtod_sync_lock);
 	if (!ka->use_master_clock) {
 		spin_unlock(&ka->pvclock_gtod_sync_lock);
-		return ktime_get_boot_ns() + ka->kvmclock_offset;
+		return ktime_get_boottime_ns() + ka->kvmclock_offset;
 	}
 
 	hv_clock.tsc_timestamp = ka->master_cycle_now;
@@ -2089,7 +2089,7 @@ u64 get_kvmclock_ns(struct kvm *kvm)
 				   &hv_clock.tsc_to_system_mul);
 		ret = __pvclock_read_cycles(&hv_clock, rdtsc());
 	} else
-		ret = ktime_get_boot_ns() + ka->kvmclock_offset;
+		ret = ktime_get_boottime_ns() + ka->kvmclock_offset;
 
 	put_cpu();
 
@@ -2188,7 +2188,7 @@ static int kvm_guest_time_update(struct kvm_vcpu *v)
 	}
 	if (!use_master_clock) {
 		host_tsc = rdtsc();
-		kernel_ns = ktime_get_boot_ns();
+		kernel_ns = ktime_get_boottime_ns();
 	}
 
 	tsc_timestamp = kvm_read_l1_tsc(v, host_tsc);
@@ -9018,7 +9018,7 @@ int kvm_arch_hardware_enable(void)
 	 * before any KVM threads can be running.  Unfortunately, we can't
 	 * bring the TSCs fully up to date with real time, as we aren't yet far
 	 * enough into CPU bringup that we know how much real time has actually
-	 * elapsed; our helper function, ktime_get_boot_ns() will be using boot
+	 * elapsed; our helper function, ktime_get_boottime_ns() will be using boot
 	 * variables that haven't been updated yet.
 	 *
 	 * So we simply find the maximum observed TSC above, then record the
@@ -9246,7 +9246,7 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
 	mutex_init(&kvm->arch.apic_map_lock);
 	spin_lock_init(&kvm->arch.pvclock_gtod_sync_lock);
 
-	kvm->arch.kvmclock_offset = -ktime_get_boot_ns();
+	kvm->arch.kvmclock_offset = -ktime_get_boottime_ns();
 	pvclock_update_vm_gtod_copy(kvm);
 
 	kvm->arch.guest_can_read_msr_platform_info = true;
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
index 083bd8114db1..dd6b4b0b5f30 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
@@ -837,7 +837,7 @@ static int kfd_ioctl_get_clock_counters(struct file *filep,
 
 	/* No access to rdtsc. Using raw monotonic time */
 	args->cpu_clock_counter = ktime_get_raw_ns();
-	args->system_clock_counter = ktime_get_boot_ns();
+	args->system_clock_counter = ktime_get_boottime_ns();
 
 	/* Since the counter is in nano-seconds we use 1GHz frequency */
 	args->system_clock_freq = 1000000000;
diff --git a/drivers/iio/humidity/dht11.c b/drivers/iio/humidity/dht11.c
index c8159205c77d..4e22b3c3e488 100644
--- a/drivers/iio/humidity/dht11.c
+++ b/drivers/iio/humidity/dht11.c
@@ -149,7 +149,7 @@ static int dht11_decode(struct dht11 *dht11, int offset)
 		return -EIO;
 	}
 
-	dht11->timestamp = ktime_get_boot_ns();
+	dht11->timestamp = ktime_get_boottime_ns();
 	if (hum_int < 4) {  /* DHT22: 100000 = (3*256+232)*100 */
 		dht11->temperature = (((temp_int & 0x7f) << 8) + temp_dec) *
 					((temp_int & 0x80) ? -100 : 100);
@@ -177,7 +177,7 @@ static irqreturn_t dht11_handle_irq(int irq, void *data)
 
 	/* TODO: Consider making the handler safe for IRQ sharing */
 	if (dht11->num_edges < DHT11_EDGES_PER_READ && dht11->num_edges >= 0) {
-		dht11->edges[dht11->num_edges].ts = ktime_get_boot_ns();
+		dht11->edges[dht11->num_edges].ts = ktime_get_boottime_ns();
 		dht11->edges[dht11->num_edges++].value =
 						gpio_get_value(dht11->gpio);
 
@@ -196,7 +196,7 @@ static int dht11_read_raw(struct iio_dev *iio_dev,
 	int ret, timeres, offset;
 
 	mutex_lock(&dht11->lock);
-	if (dht11->timestamp + DHT11_DATA_VALID_TIME < ktime_get_boot_ns()) {
+	if (dht11->timestamp + DHT11_DATA_VALID_TIME < ktime_get_boottime_ns()) {
 		timeres = ktime_get_resolution_ns();
 		dev_dbg(dht11->dev, "current timeresolution: %dns\n", timeres);
 		if (timeres > DHT11_MIN_TIMERES) {
@@ -322,7 +322,7 @@ static int dht11_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
-	dht11->timestamp = ktime_get_boot_ns() - DHT11_DATA_VALID_TIME - 1;
+	dht11->timestamp = ktime_get_boottime_ns() - DHT11_DATA_VALID_TIME - 1;
 	dht11->num_edges = -1;
 
 	platform_set_drvdata(pdev, iio);
diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
index f5a4581302f4..16008f862d19 100644
--- a/drivers/iio/industrialio-core.c
+++ b/drivers/iio/industrialio-core.c
@@ -231,9 +231,9 @@ s64 iio_get_time_ns(const struct iio_dev *indio_dev)
 		ktime_get_coarse_ts64(&tp);
 		return timespec64_to_ns(&tp);
 	case CLOCK_BOOTTIME:
-		return ktime_get_boot_ns();
+		return ktime_get_boottime_ns();
 	case CLOCK_TAI:
-		return ktime_get_tai_ns();
+		return ktime_get_clocktai_ns();
 	default:
 		BUG();
 	}
diff --git a/drivers/infiniband/hw/mlx4/alias_GUID.c b/drivers/infiniband/hw/mlx4/alias_GUID.c
index 2a0b59a4b6eb..cca414ecfcd5 100644
--- a/drivers/infiniband/hw/mlx4/alias_GUID.c
+++ b/drivers/infiniband/hw/mlx4/alias_GUID.c
@@ -310,7 +310,7 @@ static void aliasguid_query_handler(int status,
 	if (status) {
 		pr_debug("(port: %d) failed: status = %d\n",
 			 cb_ctx->port, status);
-		rec->time_to_run = ktime_get_boot_ns() + 1 * NSEC_PER_SEC;
+		rec->time_to_run = ktime_get_boottime_ns() + 1 * NSEC_PER_SEC;
 		goto out;
 	}
 
@@ -416,7 +416,7 @@ next_entry:
 			 be64_to_cpu((__force __be64)rec->guid_indexes),
 			 be64_to_cpu((__force __be64)applied_guid_indexes),
 			 be64_to_cpu((__force __be64)declined_guid_indexes));
-		rec->time_to_run = ktime_get_boot_ns() +
+		rec->time_to_run = ktime_get_boottime_ns() +
 			resched_delay_sec * NSEC_PER_SEC;
 	} else {
 		rec->status = MLX4_GUID_INFO_STATUS_SET;
@@ -709,7 +709,7 @@ static int get_low_record_time_index(struct mlx4_ib_dev *dev, u8 port,
 		}
 	}
 	if (resched_delay_sec) {
-		u64 curr_time = ktime_get_boot_ns();
+		u64 curr_time = ktime_get_boottime_ns();
 
 		*resched_delay_sec = (low_record_time < curr_time) ? 0 :
 			div_u64((low_record_time - curr_time), NSEC_PER_SEC);
diff --git a/drivers/leds/trigger/ledtrig-activity.c b/drivers/leds/trigger/ledtrig-activity.c
index bcbf41c90c30..0f130dd998b3 100644
--- a/drivers/leds/trigger/ledtrig-activity.c
+++ b/drivers/leds/trigger/ledtrig-activity.c
@@ -73,7 +73,7 @@ static void led_activity_function(struct timer_list *t)
 	 * down to 16us, ensuring we won't overflow 32-bit computations below
 	 * even up to 3k CPUs, while keeping divides cheap on smaller systems.
 	 */
-	curr_boot = ktime_get_boot_ns() * cpus;
+	curr_boot = ktime_get_boottime_ns() * cpus;
 	diff_boot = (curr_boot - activity_data->last_boot) >> 16;
 	diff_used = (curr_used - activity_data->last_used) >> 16;
 	activity_data->last_boot = curr_boot;
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/ftm-initiator.c b/drivers/net/wireless/intel/iwlwifi/mvm/ftm-initiator.c
index fec38a47696e..9f4b117db9d7 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/ftm-initiator.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/ftm-initiator.c
@@ -93,7 +93,7 @@ void iwl_mvm_ftm_restart(struct iwl_mvm *mvm)
 	struct cfg80211_pmsr_result result = {
 		.status = NL80211_PMSR_STATUS_FAILURE,
 		.final = 1,
-		.host_time = ktime_get_boot_ns(),
+		.host_time = ktime_get_boottime_ns(),
 		.type = NL80211_PMSR_TYPE_FTM,
 	};
 	int i;
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/rx.c b/drivers/net/wireless/intel/iwlwifi/mvm/rx.c
index fbd3014e8b82..160b0db27103 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/rx.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/rx.c
@@ -555,7 +555,7 @@ void iwl_mvm_rx_rx_mpdu(struct iwl_mvm *mvm, struct napi_struct *napi,
 
 	if (unlikely(ieee80211_is_beacon(hdr->frame_control) ||
 		     ieee80211_is_probe_resp(hdr->frame_control)))
-		rx_status->boottime_ns = ktime_get_boot_ns();
+		rx_status->boottime_ns = ktime_get_boottime_ns();
 
 	/* Take a reference briefly to kick off a d0i3 entry delay so
 	 * we can handle bursts of RX packets without toggling the
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c b/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c
index 1824566d08fc..64f950501287 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c
@@ -1684,7 +1684,7 @@ void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi,
 
 		if (unlikely(ieee80211_is_beacon(hdr->frame_control) ||
 			     ieee80211_is_probe_resp(hdr->frame_control)))
-			rx_status->boottime_ns = ktime_get_boot_ns();
+			rx_status->boottime_ns = ktime_get_boottime_ns();
 	}
 
 	if (iwl_mvm_create_skb(mvm, skb, hdr, len, crypt_len, rxb)) {
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/utils.c b/drivers/net/wireless/intel/iwlwifi/mvm/utils.c
index b9914efc55c4..724a25ab32f2 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/utils.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/utils.c
@@ -1443,7 +1443,7 @@ void iwl_mvm_get_sync_time(struct iwl_mvm *mvm, u32 *gp2, u64 *boottime)
 	}
 
 	*gp2 = iwl_mvm_get_systime(mvm);
-	*boottime = ktime_get_boot_ns();
+	*boottime = ktime_get_boottime_ns();
 
 	if (!ps_disabled) {
 		mvm->ps_disabled = ps_disabled;
diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
index 60ca13e0f15b..52ee165d6f1d 100644
--- a/drivers/net/wireless/mac80211_hwsim.c
+++ b/drivers/net/wireless/mac80211_hwsim.c
@@ -1274,7 +1274,7 @@ static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
 	 */
 	if (ieee80211_is_beacon(hdr->frame_control) ||
 	    ieee80211_is_probe_resp(hdr->frame_control)) {
-		rx_status.boottime_ns = ktime_get_boot_ns();
+		rx_status.boottime_ns = ktime_get_boottime_ns();
 		now = data->abs_bcn_ts;
 	} else {
 		now = mac80211_hwsim_get_tsf_raw();
diff --git a/drivers/net/wireless/ti/wlcore/main.c b/drivers/net/wireless/ti/wlcore/main.c
index c9a485ecee7b..b74dc8bc9755 100644
--- a/drivers/net/wireless/ti/wlcore/main.c
+++ b/drivers/net/wireless/ti/wlcore/main.c
@@ -483,7 +483,7 @@ static int wlcore_fw_status(struct wl1271 *wl, struct wl_fw_status *status)
 	}
 
 	/* update the host-chipset time offset */
-	wl->time_offset = (ktime_get_boot_ns() >> 10) -
+	wl->time_offset = (ktime_get_boottime_ns() >> 10) -
 		(s64)(status->fw_localtime);
 
 	wl->fw_fast_lnk_map = status->link_fast_bitmap;
diff --git a/drivers/net/wireless/ti/wlcore/rx.c b/drivers/net/wireless/ti/wlcore/rx.c
index d96bb602fae6..307fab21050b 100644
--- a/drivers/net/wireless/ti/wlcore/rx.c
+++ b/drivers/net/wireless/ti/wlcore/rx.c
@@ -93,7 +93,7 @@ static void wl1271_rx_status(struct wl1271 *wl,
 	}
 
 	if (beacon || probe_rsp)
-		status->boottime_ns = ktime_get_boot_ns();
+		status->boottime_ns = ktime_get_boottime_ns();
 
 	if (beacon)
 		wlcore_set_pending_regdomain_ch(wl, (u16)desc->channel,
diff --git a/drivers/net/wireless/ti/wlcore/tx.c b/drivers/net/wireless/ti/wlcore/tx.c
index 057c6be330e7..90e56d4c3df3 100644
--- a/drivers/net/wireless/ti/wlcore/tx.c
+++ b/drivers/net/wireless/ti/wlcore/tx.c
@@ -273,7 +273,7 @@ static void wl1271_tx_fill_hdr(struct wl1271 *wl, struct wl12xx_vif *wlvif,
 	}
 
 	/* configure packet life time */
-	hosttime = (ktime_get_boot_ns() >> 10);
+	hosttime = (ktime_get_boottime_ns() >> 10);
 	desc->start_time = cpu_to_le32(hosttime - wl->time_offset);
 
 	is_dummy = wl12xx_is_dummy_packet(wl, skb);
diff --git a/drivers/net/wireless/virt_wifi.c b/drivers/net/wireless/virt_wifi.c
index 606999f102eb..be92e1220284 100644
--- a/drivers/net/wireless/virt_wifi.c
+++ b/drivers/net/wireless/virt_wifi.c
@@ -172,7 +172,7 @@ static void virt_wifi_scan_result(struct work_struct *work)
 	informed_bss = cfg80211_inform_bss(wiphy, &channel_5ghz,
 					   CFG80211_BSS_FTYPE_PRESP,
 					   fake_router_bssid,
-					   ktime_get_boot_ns(),
+					   ktime_get_boottime_ns(),
 					   WLAN_CAPABILITY_ESS, 0,
 					   (void *)&ssid, sizeof(ssid),
 					   DBM_TO_MBM(-50), GFP_KERNEL);
diff --git a/include/linux/timekeeping.h b/include/linux/timekeeping.h
index a8ab0f143ac4..fd6123722ea8 100644
--- a/include/linux/timekeeping.h
+++ b/include/linux/timekeeping.h
@@ -131,12 +131,12 @@ static inline u64 ktime_get_real_ns(void)
 	return ktime_to_ns(ktime_get_real());
 }
 
-static inline u64 ktime_get_boot_ns(void)
+static inline u64 ktime_get_boottime_ns(void)
 {
 	return ktime_to_ns(ktime_get_boottime());
 }
 
-static inline u64 ktime_get_tai_ns(void)
+static inline u64 ktime_get_clocktai_ns(void)
 {
 	return ktime_to_ns(ktime_get_clocktai());
 }
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 87dae868707e..f8058e92f59d 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -2010,7 +2010,7 @@ enum cfg80211_signal_type {
  *	received by the device (not just by the host, in case it was
  *	buffered on the device) and be accurate to about 10ms.
  *	If the frame isn't buffered, just passing the return value of
- *	ktime_get_boot_ns() is likely appropriate.
+ *	ktime_get_boottime_ns() is likely appropriate.
  * @parent_tsf: the time at the start of reception of the first octet of the
  *	timestamp field of the frame. The time is the TSF of the BSS specified
  *	by %parent_bssid.
diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c
index ef63d26622f2..96c8928b468b 100644
--- a/kernel/bpf/syscall.c
+++ b/kernel/bpf/syscall.c
@@ -1666,7 +1666,7 @@ static int bpf_prog_load(union bpf_attr *attr, union bpf_attr __user *uattr)
 	if (err < 0)
 		goto free_prog;
 
-	prog->aux->load_time = ktime_get_boot_ns();
+	prog->aux->load_time = ktime_get_boottime_ns();
 	err = bpf_obj_name_cpy(prog->aux->name, attr->prog_name);
 	if (err)
 		goto free_prog;
diff --git a/kernel/events/core.c b/kernel/events/core.c
index abbd4b3b96c2..e2d014395fc6 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -10680,11 +10680,11 @@ static int perf_event_set_clock(struct perf_event *event, clockid_t clk_id)
 		break;
 
 	case CLOCK_BOOTTIME:
-		event->clock = &ktime_get_boot_ns;
+		event->clock = &ktime_get_boottime_ns;
 		break;
 
 	case CLOCK_TAI:
-		event->clock = &ktime_get_tai_ns;
+		event->clock = &ktime_get_clocktai_ns;
 		break;
 
 	default:
diff --git a/kernel/fork.c b/kernel/fork.c
index 75675b9bf6df..4722f1a320bf 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -2139,7 +2139,7 @@ static __latent_entropy struct task_struct *copy_process(
 	 */
 
 	p->start_time = ktime_get_ns();
-	p->real_start_time = ktime_get_boot_ns();
+	p->real_start_time = ktime_get_boottime_ns();
 
 	/*
 	 * Make it visible to the rest of the system, but dont wake it up yet.

^ permalink raw reply related	[flat|nested] 7+ messages in thread
* [tip:timers/core] timekeeping: Add missing _ns functions for coarse accessors
  2019-06-21 20:32 ` [PATCH v5 3/3] timekeeping: add missing _ns functions for coarse accessors Jason A. Donenfeld
  2019-06-21 20:45   ` Arnd Bergmann
@ 2019-06-22 19:29   ` tip-bot for Jason A. Donenfeld
  1 sibling, 0 replies; 7+ messages in thread
From: tip-bot for Jason A. Donenfeld @ 2019-06-22 19:29 UTC (permalink / raw)
  To: linux-tip-commits; +Cc: linux-kernel, mingo, tglx, arnd, hpa, Jason

Commit-ID:  4c54294d01e605a9f992361b924c5d8b12822a6d
Gitweb:     https://git.kernel.org/tip/4c54294d01e605a9f992361b924c5d8b12822a6d
Author:     Jason A. Donenfeld <Jason@zx2c4.com>
AuthorDate: Fri, 21 Jun 2019 22:32:49 +0200
Committer:  Thomas Gleixner <tglx@linutronix.de>
CommitDate: Sat, 22 Jun 2019 12:11:28 +0200

timekeeping: Add missing _ns functions for coarse accessors

This further unifies the accessors for the fast and coarse functions, so
that the same types of functions are available for each. There was also
a bit of confusion with the documentation, which prior advertised a
function that has never existed. Finally, the vanilla ktime_get_coarse()
was omitted from the API originally, so this fills this oversight.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lkml.kernel.org/r/20190621203249.3909-3-Jason@zx2c4.com

---
 Documentation/core-api/timekeeping.rst | 10 +++++++---
 include/linux/timekeeping.h            | 28 ++++++++++++++++++++++++++++
 2 files changed, 35 insertions(+), 3 deletions(-)

diff --git a/Documentation/core-api/timekeeping.rst b/Documentation/core-api/timekeeping.rst
index 4d92b1ac8024..15fc58e85ef9 100644
--- a/Documentation/core-api/timekeeping.rst
+++ b/Documentation/core-api/timekeeping.rst
@@ -99,16 +99,20 @@ Coarse and fast_ns access
 
 Some additional variants exist for more specialized cases:
 
-.. c:function:: ktime_t ktime_get_coarse_boottime( void )
+.. c:function:: ktime_t ktime_get_coarse( void )
+		ktime_t ktime_get_coarse_boottime( void )
 		ktime_t ktime_get_coarse_real( void )
 		ktime_t ktime_get_coarse_clocktai( void )
-		ktime_t ktime_get_coarse_raw( void )
+
+.. c:function:: u64 ktime_get_coarse_ns( void )
+		u64 ktime_get_coarse_boot_ns( void )
+		u64 ktime_get_coarse_real_ns( void )
+		u64 ktime_get_coarse_clocktai_ns( void )
 
 .. c:function:: void ktime_get_coarse_ts64( struct timespec64 * )
 		void ktime_get_coarse_boottime_ts64( struct timespec64 * )
 		void ktime_get_coarse_real_ts64( struct timespec64 * )
 		void ktime_get_coarse_clocktai_ts64( struct timespec64 * )
-		void ktime_get_coarse_raw_ts64( struct timespec64 * )
 
 	These are quicker than the non-coarse versions, but less accurate,
 	corresponding to CLOCK_MONONOTNIC_COARSE and CLOCK_REALTIME_COARSE
diff --git a/include/linux/timekeeping.h b/include/linux/timekeeping.h
index fd6123722ea8..dcffc00755f2 100644
--- a/include/linux/timekeeping.h
+++ b/include/linux/timekeeping.h
@@ -113,6 +113,34 @@ static inline ktime_t ktime_get_coarse_clocktai(void)
 	return ktime_get_coarse_with_offset(TK_OFFS_TAI);
 }
 
+static inline ktime_t ktime_get_coarse(void)
+{
+	struct timespec64 ts;
+
+	ktime_get_coarse_ts64(&ts);
+	return timespec64_to_ktime(ts);
+}
+
+static inline u64 ktime_get_coarse_ns(void)
+{
+	return ktime_to_ns(ktime_get_coarse());
+}
+
+static inline u64 ktime_get_coarse_real_ns(void)
+{
+	return ktime_to_ns(ktime_get_coarse_real());
+}
+
+static inline u64 ktime_get_coarse_boot_ns(void)
+{
+	return ktime_to_ns(ktime_get_coarse_boottime());
+}
+
+static inline u64 ktime_get_coarse_clocktai_ns(void)
+{
+	return ktime_to_ns(ktime_get_coarse_clocktai());
+}
+
 /**
  * ktime_mono_to_real - Convert monotonic time to clock realtime
  */

^ permalink raw reply related	[flat|nested] 7+ messages in thread
end of thread, other threads:[~2019-06-22 19:29 UTC | newest]

Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-06-21 20:32 [PATCH v5 1/3] timekeeping: use proper ktime_add when adding nsecs in coarse offset Jason A. Donenfeld
2019-06-21 20:32 ` [PATCH v5 2/3] timekeeping: use proper clock specifier names in functions Jason A. Donenfeld
2019-06-22 19:29   ` [tip:timers/core] timekeeping: Use " tip-bot for Jason A. Donenfeld
2019-06-21 20:32 ` [PATCH v5 3/3] timekeeping: add missing _ns functions for coarse accessors Jason A. Donenfeld
2019-06-21 20:45   ` Arnd Bergmann
2019-06-22 19:29   ` [tip:timers/core] timekeeping: Add " tip-bot for Jason A. Donenfeld
2019-06-22 19:28 ` [tip:timers/core] timekeeping: Use proper ktime_add when adding nsecs in coarse offset tip-bot for Jason A. Donenfeld

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