From: Heiko Carstens <heiko.carstens@de.ibm.com>
To: Peter Zijlstra <peterz@infradead.org>,
Thomas Gleixner <tglx@linutronix.de>,
Vasily Gorbik <gor@linux.ibm.com>,
Christian Borntraeger <borntraeger@de.ibm.com>,
Michael Ellerman <mpe@ellerman.id.au>,
Paul Mackerras <paulus@samba.org>
Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-s390@vger.kernel.org
Subject: [PATCHv2 1/3] processor: remove spin_cpu_yield
Date: Thu, 13 Jun 2019 12:35:08 +0200 [thread overview]
Message-ID: <20190613103510.60529-2-heiko.carstens@de.ibm.com> (raw)
In-Reply-To: <20190613103510.60529-1-heiko.carstens@de.ibm.com>
spin_cpu_yield is unused, therefore remove it.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
---
arch/powerpc/include/asm/processor.h | 2 --
include/linux/processor.h | 9 ---------
2 files changed, 11 deletions(-)
diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h
index ef573fe9873e..a9993e7a443b 100644
--- a/arch/powerpc/include/asm/processor.h
+++ b/arch/powerpc/include/asm/processor.h
@@ -346,8 +346,6 @@ static inline unsigned long __pack_fe01(unsigned int fpmode)
#define spin_cpu_relax() barrier()
-#define spin_cpu_yield() spin_cpu_relax()
-
#define spin_end() HMT_medium()
#define spin_until_cond(cond) \
diff --git a/include/linux/processor.h b/include/linux/processor.h
index dbc952eec869..dc78bdc7079a 100644
--- a/include/linux/processor.h
+++ b/include/linux/processor.h
@@ -32,15 +32,6 @@
#define spin_cpu_relax() cpu_relax()
#endif
-/*
- * spin_cpu_yield may be called to yield (undirected) to the hypervisor if
- * necessary. This should be used if the wait is expected to take longer
- * than context switch overhead, but we can't sleep or do a directed yield.
- */
-#ifndef spin_cpu_yield
-#define spin_cpu_yield() cpu_relax_yield()
-#endif
-
#ifndef spin_end
#define spin_end()
#endif
--
2.17.1
next prev parent reply other threads:[~2019-06-13 15:33 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-13 10:35 [PATCHv2 0/3] improve wait logic of stop_machine Heiko Carstens
2019-06-13 10:35 ` Heiko Carstens [this message]
2019-06-13 10:35 ` [PATCHv2 2/3] s390: " Heiko Carstens
2019-06-13 10:35 ` [PATCHv2 3/3] processor: get rid of cpu_relax_yield Heiko Carstens
2019-06-13 13:48 ` [PATCHv2 0/3] improve wait logic of stop_machine Peter Zijlstra
2019-06-13 19:57 ` Thomas Gleixner
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