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From: Peter Zijlstra <peterz@infradead.org>
To: bigeasy@linutronix.de
Cc: mark.rutland@arm.com, maz@kernel.org, catalin.marinas@arm.com,
	will@kernel.org, chenhuacai@kernel.org, kernel@xen0n.name,
	hca@linux.ibm.com, gor@linux.ibm.com, agordeev@linux.ibm.com,
	borntraeger@linux.ibm.com, svens@linux.ibm.com,
	pbonzini@redhat.com, wanpengli@tencent.com, vkuznets@redhat.com,
	tglx@linutronix.de, mingo@redhat.com, bp@alien8.de,
	dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com,
	jgross@suse.com, boris.ostrovsky@oracle.com,
	daniel.lezcano@linaro.org, kys@microsoft.com,
	haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com,
	rafael@kernel.org, peterz@infradead.org, longman@redhat.com,
	boqun.feng@gmail.com, pmladek@suse.com, senozhatsky@chromium.org,
	rostedt@goodmis.org, john.ogness@linutronix.de,
	juri.lelli@redhat.com, vincent.guittot@linaro.org,
	dietmar.eggemann@arm.com, bsegall@google.com, mgorman@suse.de,
	bristot@redhat.com, vschneid@redhat.com, jstultz@google.com,
	sboyd@kernel.org, linux-kernel@vger.kernel.org,
	loongarch@lists.linux.dev, linux-s390@vger.kernel.org,
	kvm@vger.kernel.org, linux-hyperv@vger.kernel.org,
	linux-pm@vger.kernel.org
Subject: [RFC][PATCH 3/9] arm64/io: Always inline all of __raw_{read,write}[bwlq]()
Date: Mon, 08 May 2023 23:19:54 +0200	[thread overview]
Message-ID: <20230508213147.583344579@infradead.org> (raw)
In-Reply-To: 20230508211951.901961964@infradead.org

The next patch will want to use __raw_readl() from a noinstr section
and as such that needs to be marked __always_inline to avoid the
compiler being a silly bugger.

Turns out it already is, but its siblings are not.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
 arch/arm64/include/asm/io.h |   12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

--- a/arch/arm64/include/asm/io.h
+++ b/arch/arm64/include/asm/io.h
@@ -22,13 +22,13 @@
  * Generic IO read/write.  These perform native-endian accesses.
  */
 #define __raw_writeb __raw_writeb
-static inline void __raw_writeb(u8 val, volatile void __iomem *addr)
+static __always_inline void __raw_writeb(u8 val, volatile void __iomem *addr)
 {
 	asm volatile("strb %w0, [%1]" : : "rZ" (val), "r" (addr));
 }
 
 #define __raw_writew __raw_writew
-static inline void __raw_writew(u16 val, volatile void __iomem *addr)
+static __always_inline void __raw_writew(u16 val, volatile void __iomem *addr)
 {
 	asm volatile("strh %w0, [%1]" : : "rZ" (val), "r" (addr));
 }
@@ -40,13 +40,13 @@ static __always_inline void __raw_writel
 }
 
 #define __raw_writeq __raw_writeq
-static inline void __raw_writeq(u64 val, volatile void __iomem *addr)
+static __always_inline void __raw_writeq(u64 val, volatile void __iomem *addr)
 {
 	asm volatile("str %x0, [%1]" : : "rZ" (val), "r" (addr));
 }
 
 #define __raw_readb __raw_readb
-static inline u8 __raw_readb(const volatile void __iomem *addr)
+static __always_inline u8 __raw_readb(const volatile void __iomem *addr)
 {
 	u8 val;
 	asm volatile(ALTERNATIVE("ldrb %w0, [%1]",
@@ -57,7 +57,7 @@ static inline u8 __raw_readb(const volat
 }
 
 #define __raw_readw __raw_readw
-static inline u16 __raw_readw(const volatile void __iomem *addr)
+static __always_inline u16 __raw_readw(const volatile void __iomem *addr)
 {
 	u16 val;
 
@@ -80,7 +80,7 @@ static __always_inline u32 __raw_readl(c
 }
 
 #define __raw_readq __raw_readq
-static inline u64 __raw_readq(const volatile void __iomem *addr)
+static __always_inline u64 __raw_readq(const volatile void __iomem *addr)
 {
 	u64 val;
 	asm volatile(ALTERNATIVE("ldr %0, [%1]",



  parent reply	other threads:[~2023-05-08 21:35 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-05-08 21:19 [RFC][PATCH 0/9] local_clock() vs noinstr Peter Zijlstra
2023-05-08 21:19 ` [RFC][PATCH 1/9] seqlock/latch: Provide raw_read_seqcount_latch_retry() Peter Zijlstra
2023-05-09  8:13   ` Thomas Gleixner
2023-05-10  7:58   ` Petr Mladek
2023-05-08 21:19 ` [RFC][PATCH 2/9] time/sched_clock: Provide sched_clock_noinstr() Peter Zijlstra
2023-05-08 21:19 ` Peter Zijlstra [this message]
2023-05-09 14:51   ` [RFC][PATCH 3/9] arm64/io: Always inline all of __raw_{read,write}[bwlq]() Mark Rutland
2023-05-08 21:19 ` [RFC][PATCH 4/9] arm64/arch_timer: Provide noinstr sched_clock_read() functions Peter Zijlstra
2023-05-08 21:19 ` [RFC][PATCH 5/9] loongarch: Provide noinstr sched_clock_read() Peter Zijlstra
2023-05-08 21:19 ` [RFC][PATCH 6/9] s390/time: Provide sched_clock_noinstr() Peter Zijlstra
2023-05-09  6:13   ` Heiko Carstens
2023-05-09  6:42     ` Peter Zijlstra
2023-05-08 21:19 ` [RFC][PATCH 7/9] x86/tsc: " Peter Zijlstra
2023-05-08 21:44   ` Peter Zijlstra
2023-05-08 23:30     ` Wei Liu
2023-05-11 20:23       ` Peter Zijlstra
2023-05-11 23:11         ` Michael Kelley (LINUX)
2023-05-12  6:00           ` Peter Zijlstra
2023-05-17  2:26     ` Michael Kelley (LINUX)
2023-05-17 11:13       ` Peter Zijlstra
2023-05-08 21:19 ` [RFC][PATCH 8/9] sched/clock: Provide local_clock_noinstr() Peter Zijlstra
2023-05-08 21:20 ` [RFC][PATCH 9/9] cpuidle: Use local_clock_noinstr() Peter Zijlstra
2023-05-09 16:18   ` Rafael J. Wysocki
2023-05-09 19:02     ` Peter Zijlstra
2023-05-10 13:43 ` [RFC][PATCH 0/9] local_clock() vs noinstr Sebastian Andrzej Siewior

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