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([193.77.86.199]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-acb6ef49ff9sm90053366b.158.2025.04.18.01.08.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 18 Apr 2025 01:08:13 -0700 (PDT) From: Uros Bizjak To: x86@kernel.org, linux-kernel@vger.kernel.org Cc: Uros Bizjak , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , "H. Peter Anvin" Subject: [PATCH -tip v2 1/2] x86/asm: Rename rep_nop() to native_pause() Date: Fri, 18 Apr 2025 10:07:43 +0200 Message-ID: <20250418080805.83679-1-ubizjak@gmail.com> X-Mailer: git-send-email 2.49.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Rename rep_nop() function to what it really does. No functional change intended. Signed-off-by: Uros Bizjak Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Borislav Petkov Cc: Dave Hansen Cc: "H. Peter Anvin" --- v2: Rename rep_nop() to native_pause() first. --- arch/x86/include/asm/vdso/processor.h | 4 ++-- arch/x86/kernel/apic/io_apic.c | 2 +- arch/x86/lib/delay.c | 2 +- 3 files changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/x86/include/asm/vdso/processor.h b/arch/x86/include/asm/vdso/processor.h index c9b2ba7a9ec4..895333b52cb3 100644 --- a/arch/x86/include/asm/vdso/processor.h +++ b/arch/x86/include/asm/vdso/processor.h @@ -8,14 +8,14 @@ #ifndef __ASSEMBLER__ /* REP NOP (PAUSE) is a good thing to insert into busy-wait loops. */ -static __always_inline void rep_nop(void) +static __always_inline void native_pause(void) { asm volatile("rep; nop" ::: "memory"); } static __always_inline void cpu_relax(void) { - rep_nop(); + native_pause(); } struct getcpu_cache; diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index eebc360ed1bb..ba5a4ccda37a 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -1486,7 +1486,7 @@ static void __init delay_with_tsc(void) * 1 GHz == 40 jiffies */ do { - rep_nop(); + native_pause(); now = rdtsc(); } while ((now - start) < 40000000000ULL / HZ && time_before_eq(jiffies, end)); } diff --git a/arch/x86/lib/delay.c b/arch/x86/lib/delay.c index e86eda2c0b04..eb2d2e1cbddd 100644 --- a/arch/x86/lib/delay.c +++ b/arch/x86/lib/delay.c @@ -75,7 +75,7 @@ static void delay_tsc(u64 cycles) /* Allow RT tasks to run */ preempt_enable(); - rep_nop(); + native_pause(); preempt_disable(); /* -- 2.49.0