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Revert "parisc: Use ldcw instruction for SMP spinlock release barrier"
authorHelge Deller <deller@gmx.de>
Tue, 28 Jul 2020 16:54:40 +0000 (18:54 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 19 Aug 2020 06:24:17 +0000 (08:24 +0200)
commitabff2f0b44d5c6a52f76da86f21bb05c19850d9d
tree420f1c6c71190065e1c7beaaa0e662e6dbe422fatree
parent1da1661a1a268aa57a5d33ce473052db1fce84f0commit | diff
Revert "parisc: Use ldcw instruction for SMP spinlock release barrier"

commit 6e9f06ee6c9566f3606d93182ac8f803a148504b upstream.

This reverts commit 9e5c602186a692a7e848c0da17aed40f49d30519.
No need to use the ldcw instruction as SMP spinlock release barrier.
Revert it to gain back speed again.

Signed-off-by: Helge Deller <deller@gmx.de>
Cc: <stable@vger.kernel.org> # v5.2+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
arch/parisc/include/asm/spinlock.h diff | blob | blame | history
arch/parisc/kernel/entry.S diff | blob | blame | history
arch/parisc/kernel/syscall.S diff | blob | blame | history
Linux 6.x block layer and io_uring tree(s)