linux-kernel - [PATCH 03/10] tick/nohz: Remove superflous check for CONFIG_VIRT_CPU_ACCOUNTING

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Date:   Thu, 13 May 2021 01:29:17 +0200
From:   Frederic Weisbecker <frederic@...nel.org>
To:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...nel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Frederic Weisbecker <frederic@...nel.org>,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Yunfeng Ye <yeyunfeng@...wei.com>,
        Marcelo Tosatti <mtosatti@...hat.com>
Subject: [PATCH 03/10] tick/nohz: Remove superflous check for CONFIG_VIRT_CPU_ACCOUNTING_NATIVE

The vtime_accounting_enabled_this_cpu() early check already makes what
follows as dead code in the case of CONFIG_VIRT_CPU_ACCOUNTING_NATIVE.
No need to keep the ifdeferry around.

Acked-by: Peter Zijlstra <peterz@...radead.org>
Signed-off-by: Frederic Weisbecker <frederic@...nel.org>
Cc: Yunfeng Ye <yeyunfeng@...wei.com>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Marcelo Tosatti <mtosatti@...hat.com>
Cc: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
---
 kernel/time/tick-sched.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index 05c1ce1034d6..1afa7595d1e0 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -1196,7 +1196,6 @@ unsigned long tick_nohz_get_idle_calls(void)
 
 static void tick_nohz_account_idle_ticks(struct tick_sched *ts)
 {
-#ifndef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
 	unsigned long ticks;
 
 	if (vtime_accounting_enabled_this_cpu())
@@ -1212,7 +1211,6 @@ static void tick_nohz_account_idle_ticks(struct tick_sched *ts)
 	 */
 	if (ticks && ticks < LONG_MAX)
 		account_idle_ticks(ticks);
-#endif
 }
 
 void tick_nohz_idle_restart_tick(void)
-- 
2.25.1