linux-kernel - [tip: timers/core] ntp: Remove unused tick

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Message-ID: <172788389716.1442.15522999436684899527.tip-bot2@tip-bot2>
Date: Wed, 02 Oct 2024 15:44:57 -0000
From: "tip-bot2 for Thomas Gleixner" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Thomas Gleixner <tglx@...utronix.de>,
 "Anna-Maria Behnsen" <anna-maria@...utronix.de>,
 John Stultz <jstultz@...gle.com>, x86@...nel.org,
 linux-kernel@...r.kernel.org
Subject: [tip: timers/core] ntp: Remove unused tick_nsec

The following commit has been merged into the timers/core branch of tip:

Commit-ID:     a849a0273d0f73a252d14d31c5003a8059ea51fc
Gitweb:        https://git.kernel.org/tip/a849a0273d0f73a252d14d31c5003a8059ea51fc
Author:        Thomas Gleixner <tglx@...utronix.de>
AuthorDate:    Wed, 11 Sep 2024 15:17:37 +02:00
Committer:     Thomas Gleixner <tglx@...utronix.de>
CommitterDate: Wed, 02 Oct 2024 16:53:38 +02:00

ntp: Remove unused tick_nsec

tick_nsec is only updated in the NTP core, but there are no users.

Remove it.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Signed-off-by: Anna-Maria Behnsen <anna-maria@...utronix.de>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Acked-by: John Stultz <jstultz@...gle.com>
Link: https://lore.kernel.org/all/20240911-devel-anna-maria-b4-timers-ptp-ntp-v1-1-2d52f4e13476@linutronix.de

---
 arch/x86/include/asm/timer.h | 2 --
 include/linux/timex.h        | 1 -
 kernel/time/ntp.c            | 8 ++------
 3 files changed, 2 insertions(+), 9 deletions(-)

diff --git a/arch/x86/include/asm/timer.h b/arch/x86/include/asm/timer.h
index 7365dd4..23baf8c 100644
--- a/arch/x86/include/asm/timer.h
+++ b/arch/x86/include/asm/timer.h
@@ -6,8 +6,6 @@
 #include <linux/interrupt.h>
 #include <linux/math64.h>
 
-#define TICK_SIZE (tick_nsec / 1000)
-
 unsigned long long native_sched_clock(void);
 extern void recalibrate_cpu_khz(void);
 
diff --git a/include/linux/timex.h b/include/linux/timex.h
index 3871b06..7f7a12f 100644
--- a/include/linux/timex.h
+++ b/include/linux/timex.h
@@ -145,7 +145,6 @@ unsigned long random_get_entropy_fallback(void);
  * estimated error = NTP dispersion.
  */
 extern unsigned long tick_usec;		/* USER_HZ period (usec) */
-extern unsigned long tick_nsec;		/* SHIFTED_HZ period (nsec) */
 
 /* Required to safely shift negative values */
 #define shift_right(x, s) ({	\
diff --git a/kernel/time/ntp.c b/kernel/time/ntp.c
index 802b336..c17cc9d 100644
--- a/kernel/time/ntp.c
+++ b/kernel/time/ntp.c
@@ -33,9 +33,6 @@
 /* USER_HZ period (usecs): */
 unsigned long			tick_usec = USER_TICK_USEC;
 
-/* SHIFTED_HZ period (nsecs): */
-unsigned long			tick_nsec;
-
 static u64			tick_length;
 static u64			tick_length_base;
 
@@ -253,8 +250,8 @@ static inline int ntp_synced(void)
  */
 
 /*
- * Update (tick_length, tick_length_base, tick_nsec), based
- * on (tick_usec, ntp_tick_adj, time_freq):
+ * Update tick_length and tick_length_base, based on tick_usec, ntp_tick_adj and
+ * time_freq:
  */
 static void ntp_update_frequency(void)
 {
@@ -267,7 +264,6 @@ static void ntp_update_frequency(void)
 	second_length		+= ntp_tick_adj;
 	second_length		+= time_freq;
 
-	tick_nsec		 = div_u64(second_length, HZ) >> NTP_SCALE_SHIFT;
 	new_base		 = div_u64(second_length, NTP_INTERVAL_FREQ);
 
 	/*