From: Stafford Horne <shorne@gmail.com>
To: LKML <linux-kernel@vger.kernel.org>
Cc: Openrisc <openrisc@lists.librecores.org>,
Stafford Horne <shorne@gmail.com>,
Jonas Bonn <jonas@southpole.se>,
Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>,
Randy Dunlap <rdunlap@infradead.org>,
Petr Mladek <pmladek@suse.com>, Marc Zyngier <maz@kernel.org>,
Chris Down <chris@chrisdown.name>,
Mark Rutland <mark.rutland@arm.com>
Subject: [PATCH 2/3] openrisc: Use delay slot for clone and fork wrappers
Date: Sat, 4 Dec 2021 11:18:41 +0900 [thread overview]
Message-ID: <20211204021842.1853549-3-shorne@gmail.com> (raw)
In-Reply-To: <20211204021842.1853549-1-shorne@gmail.com>
This saves one instruction.
Signed-off-by: Stafford Horne <shorne@gmail.com>
---
arch/openrisc/kernel/entry.S | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/arch/openrisc/kernel/entry.S b/arch/openrisc/kernel/entry.S
index c608f76e5753..8cd2113057c5 100644
--- a/arch/openrisc/kernel/entry.S
+++ b/arch/openrisc/kernel/entry.S
@@ -1162,15 +1162,13 @@ _fork_save_extra_regs_and_call:
ENTRY(__sys_clone)
l.movhi r29,hi(sys_clone)
- l.ori r29,r29,lo(sys_clone)
l.j _fork_save_extra_regs_and_call
- l.nop
+ l.ori r29,r29,lo(sys_clone)
ENTRY(__sys_fork)
l.movhi r29,hi(sys_fork)
- l.ori r29,r29,lo(sys_fork)
l.j _fork_save_extra_regs_and_call
- l.nop
+ l.ori r29,r29,lo(sys_fork)
ENTRY(sys_rt_sigreturn)
l.jal _sys_rt_sigreturn
--
2.31.1
next prev parent reply other threads:[~2021-12-04 2:19 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-04 2:18 [PATCH 0/3] OpenRISC Switch and Clone cleanups Stafford Horne
2021-12-04 2:18 ` [PATCH 1/3] openrisc: Cleanup switch code and comments Stafford Horne
2021-12-04 2:18 ` Stafford Horne [this message]
2021-12-04 2:18 ` [PATCH 3/3] openrisc: Add clone3 ABI wrapper Stafford Horne
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