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From: "Steven J. Hill" <steven.hill@cavium.com>
To: linux-mips@linux-mips.org
Cc: ralf@linux-mips.org
Subject: [PATCH v2 01/12] MIPS: Add nudges to writes for bit unlocks.
Date: Thu, 28 Sep 2017 12:34:02 -0500	[thread overview]
Message-ID: <1506620053-2557-2-git-send-email-steven.hill@cavium.com> (raw)
In-Reply-To: <1506620053-2557-1-git-send-email-steven.hill@cavium.com>

From: Chad Reese <kreese@caviumnetworks.com>

Flushing the writes lets other CPUs waiting for the lock to get it
sooner.

Signed-off-by: Chad Reese <kreese@caviumnetworks.com>
Signed-off-by: David Daney <david.daney@cavium.com>
---
 arch/mips/include/asm/bitops.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/mips/include/asm/bitops.h b/arch/mips/include/asm/bitops.h
index fa57cef..da1b871 100644
--- a/arch/mips/include/asm/bitops.h
+++ b/arch/mips/include/asm/bitops.h
@@ -456,6 +456,7 @@ static inline void __clear_bit_unlock(unsigned long nr, volatile unsigned long *
 {
 	smp_mb__before_llsc();
 	__clear_bit(nr, addr);
+	nudge_writes();
 }
 
 /*
-- 
2.1.4

  reply	other threads:[~2017-09-28 17:42 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-09-28 17:34 [PATCH v2 00/12] Add Octeon Hotplug CPU Support Steven J. Hill
2017-09-28 17:34 ` Steven J. Hill [this message]
2017-09-29 20:54   ` [PATCH v2 01/12] MIPS: Add nudges to writes for bit unlocks James Hogan
2017-09-29 20:54     ` James Hogan
2017-09-28 17:34 ` [PATCH v2 02/12] MIPS: Remove unused variable 'lastpfn' Steven J. Hill
2017-09-28 17:34 ` [PATCH v2 03/12] MIPS: Allow __cpu_number_map to be larger than NR_CPUS Steven J. Hill
2017-11-07 18:29   ` James Hogan
2017-11-07 18:29     ` James Hogan
2017-09-28 17:34 ` [PATCH v2 04/12] MIPS: Octeon: Remove usage of cvmx_wait() everywhere Steven J. Hill
2017-09-28 17:34 ` [PATCH v2 05/12] MIPS: Octeon: Header and file cleaning Steven J. Hill
2017-11-07 16:11   ` James Hogan
2017-11-07 16:11     ` James Hogan
2017-11-07 18:52     ` Steven J. Hill
2017-09-28 17:34 ` [PATCH v2 06/12] MIPS: Octeon: Update CIU_FUSE registers Steven J. Hill
2017-09-28 17:34 ` [PATCH v2 07/12] MIPS: Octeon: Add Octeon III platforms for console output Steven J. Hill
2017-09-28 17:34 ` [PATCH v2 08/12] MIPS: Octeon: Remove crufty KEXEC and CRASH_DUMP code Steven J. Hill
2017-09-28 17:34 ` [PATCH v2 09/12] MIPS: Octeon: Populate kernel memory from cvmx_bootmem named blocks Steven J. Hill
2017-09-28 17:34 ` [PATCH v2 10/12] MIPS: Add the concept of BOOT_MEM_KERNEL to boot_mem_map Steven J. Hill
2017-09-28 17:34 ` [PATCH v2 11/12] MIPS: Add define for number of bits in MMUSizeExt field Steven J. Hill
2017-09-28 17:34 ` [PATCH v2 12/12] MIPS: Octeon: Add working hotplug CPU support Steven J. Hill

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