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Message-ID: <20260116145208.87445-11-frederic@kernel.org>
Date: Fri, 16 Jan 2026 15:52:03 +0100
From: Frederic Weisbecker <frederic@...nel.org>
To: LKML <linux-kernel@...r.kernel.org>
Cc: Frederic Weisbecker <frederic@...nel.org>,
"Christophe Leroy (CS GROUP)" <chleroy@...nel.org>,
"Rafael J. Wysocki" <rafael@...nel.org>,
Alexander Gordeev <agordeev@...ux.ibm.com>,
Anna-Maria Behnsen <anna-maria@...utronix.de>,
Ben Segall <bsegall@...gle.com>,
Boqun Feng <boqun.feng@...il.com>,
Christian Borntraeger <borntraeger@...ux.ibm.com>,
Dietmar Eggemann <dietmar.eggemann@....com>,
Heiko Carstens <hca@...ux.ibm.com>,
Ingo Molnar <mingo@...hat.com>,
Jan Kiszka <jan.kiszka@...mens.com>,
Joel Fernandes <joelagnelf@...dia.com>,
Juri Lelli <juri.lelli@...hat.com>,
Kieran Bingham <kbingham@...nel.org>,
Madhavan Srinivasan <maddy@...ux.ibm.com>,
Mel Gorman <mgorman@...e.de>,
Michael Ellerman <mpe@...erman.id.au>,
Neeraj Upadhyay <neeraj.upadhyay@...nel.org>,
Nicholas Piggin <npiggin@...il.com>,
"Paul E . McKenney" <paulmck@...nel.org>,
Peter Zijlstra <peterz@...radead.org>,
Steven Rostedt <rostedt@...dmis.org>,
Sven Schnelle <svens@...ux.ibm.com>,
Thomas Gleixner <tglx@...utronix.de>,
Uladzislau Rezki <urezki@...il.com>,
Valentin Schneider <vschneid@...hat.com>,
Vasily Gorbik <gor@...ux.ibm.com>,
Vincent Guittot <vincent.guittot@...aro.org>,
Viresh Kumar <viresh.kumar@...aro.org>,
Xin Zhao <jackzxcui1989@....com>,
linux-pm@...r.kernel.org,
linux-s390@...r.kernel.org,
linuxppc-dev@...ts.ozlabs.org
Subject: [PATCH 10/15] tick/sched: Remove unused fields
Remove fields after the dyntick-idle cputime migration to scheduler
code.
Signed-off-by: Frederic Weisbecker <frederic@...nel.org>
---
kernel/time/tick-sched.h | 12 ------------
kernel/time/timer_list.c | 6 +-----
scripts/gdb/linux/timerlist.py | 4 ----
3 files changed, 1 insertion(+), 21 deletions(-)
diff --git a/kernel/time/tick-sched.h b/kernel/time/tick-sched.h
index b4a7822f495d..79b9252047b1 100644
--- a/kernel/time/tick-sched.h
+++ b/kernel/time/tick-sched.h
@@ -44,9 +44,7 @@ struct tick_device {
* to resume the tick timer operation in the timeline
* when the CPU returns from nohz sleep.
* @next_tick: Next tick to be fired when in dynticks mode.
- * @idle_jiffies: jiffies at the entry to idle for idle time accounting
* @idle_waketime: Time when the idle was interrupted
- * @idle_sleeptime_seq: sequence counter for data consistency
* @idle_entrytime: Time when the idle call was entered
* @last_jiffies: Base jiffies snapshot when next event was last computed
* @timer_expires_base: Base time clock monotonic for @timer_expires
@@ -55,9 +53,6 @@ struct tick_device {
* @idle_expires: Next tick in idle, for debugging purpose only
* @idle_calls: Total number of idle calls
* @idle_sleeps: Number of idle calls, where the sched tick was stopped
- * @idle_exittime: Time when the idle state was left
- * @idle_sleeptime: Sum of the time slept in idle with sched tick stopped
- * @iowait_sleeptime: Sum of the time slept in idle with sched tick stopped, with IO outstanding
* @tick_dep_mask: Tick dependency mask - is set, if someone needs the tick
* @check_clocks: Notification mechanism about clocksource changes
*/
@@ -73,12 +68,10 @@ struct tick_sched {
struct hrtimer sched_timer;
ktime_t last_tick;
ktime_t next_tick;
- unsigned long idle_jiffies;
ktime_t idle_waketime;
unsigned int got_idle_tick;
/* Idle entry */
- seqcount_t idle_sleeptime_seq;
ktime_t idle_entrytime;
/* Tick stop */
@@ -90,11 +83,6 @@ struct tick_sched {
unsigned long idle_calls;
unsigned long idle_sleeps;
- /* Idle exit */
- ktime_t idle_exittime;
- ktime_t idle_sleeptime;
- ktime_t iowait_sleeptime;
-
/* Full dynticks handling */
atomic_t tick_dep_mask;
diff --git a/kernel/time/timer_list.c b/kernel/time/timer_list.c
index 488e47e96e93..e77b512e8597 100644
--- a/kernel/time/timer_list.c
+++ b/kernel/time/timer_list.c
@@ -154,14 +154,10 @@ static void print_cpu(struct seq_file *m, int cpu, u64 now)
P_flag(highres, TS_FLAG_HIGHRES);
P_ns(last_tick);
P_flag(tick_stopped, TS_FLAG_STOPPED);
- P(idle_jiffies);
P(idle_calls);
P(idle_sleeps);
P_ns(idle_entrytime);
P_ns(idle_waketime);
- P_ns(idle_exittime);
- P_ns(idle_sleeptime);
- P_ns(iowait_sleeptime);
P(last_jiffies);
P(next_timer);
P_ns(idle_expires);
@@ -258,7 +254,7 @@ static void timer_list_show_tickdevices_header(struct seq_file *m)
static inline void timer_list_header(struct seq_file *m, u64 now)
{
- SEQ_printf(m, "Timer List Version: v0.10\n");
+ SEQ_printf(m, "Timer List Version: v0.11\n");
SEQ_printf(m, "HRTIMER_MAX_CLOCK_BASES: %d\n", HRTIMER_MAX_CLOCK_BASES);
SEQ_printf(m, "now at %Ld nsecs\n", (unsigned long long)now);
SEQ_printf(m, "\n");
diff --git a/scripts/gdb/linux/timerlist.py b/scripts/gdb/linux/timerlist.py
index ccc24d30de80..c14ce55674c9 100644
--- a/scripts/gdb/linux/timerlist.py
+++ b/scripts/gdb/linux/timerlist.py
@@ -90,14 +90,10 @@ def print_cpu(hrtimer_bases, cpu, max_clock_bases):
text += f" .{'nohz':15s}: {int(bool(ts['flags'] & TS_FLAG_NOHZ))}\n"
text += f" .{'last_tick':15s}: {ts['last_tick']}\n"
text += f" .{'tick_stopped':15s}: {int(bool(ts['flags'] & TS_FLAG_STOPPED))}\n"
- text += f" .{'idle_jiffies':15s}: {ts['idle_jiffies']}\n"
text += f" .{'idle_calls':15s}: {ts['idle_calls']}\n"
text += f" .{'idle_sleeps':15s}: {ts['idle_sleeps']}\n"
text += f" .{'idle_entrytime':15s}: {ts['idle_entrytime']} nsecs\n"
text += f" .{'idle_waketime':15s}: {ts['idle_waketime']} nsecs\n"
- text += f" .{'idle_exittime':15s}: {ts['idle_exittime']} nsecs\n"
- text += f" .{'idle_sleeptime':15s}: {ts['idle_sleeptime']} nsecs\n"
- text += f" .{'iowait_sleeptime':15s}: {ts['iowait_sleeptime']} nsecs\n"
text += f" .{'last_jiffies':15s}: {ts['last_jiffies']}\n"
text += f" .{'next_timer':15s}: {ts['next_timer']}\n"
text += f" .{'idle_expires':15s}: {ts['idle_expires']} nsecs\n"
--
2.51.1
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