linux-kernel - [tip: timers/nohz] arm: Remove TIF

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Message-ID: <158281639727.28353.4959113583805809170.tip-bot2@tip-bot2>
Date:   Thu, 27 Feb 2020 15:13:17 -0000
From:   "tip-bot2 for Frederic Weisbecker" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Frederic Weisbecker <frederic@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Russell King <linux@...linux.org.uk>, x86 <x86@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: [tip: timers/nohz] arm: Remove TIF_NOHZ

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

Commit-ID:     1acb2249ee380f56ffb4200ac85bfe233d7a8ca3
Gitweb:        https://git.kernel.org/tip/1acb2249ee380f56ffb4200ac85bfe233d7a8ca3
Author:        Frederic Weisbecker <frederic@...nel.org>
AuthorDate:    Tue, 28 Jan 2020 13:50:32 +01:00
Committer:     Frederic Weisbecker <frederic@...nel.org>
CommitterDate: Fri, 14 Feb 2020 16:05:33 +01:00

arm: Remove TIF_NOHZ

Arm entry code calls context tracking from fast path. TIF_NOHZ is unused
and can be safely removed.

Signed-off-by: Frederic Weisbecker <frederic@...nel.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Russell King <linux@...linux.org.uk>
---
 arch/arm/Kconfig                   | 1 -
 arch/arm/include/asm/thread_info.h | 1 -
 2 files changed, 2 deletions(-)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 38b764c..97864aa 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -72,7 +72,6 @@ config ARM
 	select HAVE_ARM_SMCCC if CPU_V7
 	select HAVE_EBPF_JIT if !CPU_ENDIAN_BE32
 	select HAVE_CONTEXT_TRACKING
-	select HAVE_TIF_NOHZ
 	select HAVE_COPY_THREAD_TLS
 	select HAVE_C_RECORDMCOUNT
 	select HAVE_DEBUG_KMEMLEAK if !XIP_KERNEL
diff --git a/arch/arm/include/asm/thread_info.h b/arch/arm/include/asm/thread_info.h
index 0d0d517..3609a69 100644
--- a/arch/arm/include/asm/thread_info.h
+++ b/arch/arm/include/asm/thread_info.h
@@ -141,7 +141,6 @@ extern int vfp_restore_user_hwstate(struct user_vfp *,
 #define TIF_SYSCALL_TRACEPOINT	6	/* syscall tracepoint instrumentation */
 #define TIF_SECCOMP		7	/* seccomp syscall filtering active */
 
-#define TIF_NOHZ		12	/* in adaptive nohz mode */
 #define TIF_USING_IWMMXT	17
 #define TIF_MEMDIE		18	/* is terminating due to OOM killer */
 #define TIF_RESTORE_SIGMASK	20