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| author | Paul E. McKenney <paulmck@kernel.org> | 2024-03-27 15:21:31 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2024-09-13 07:10:38 -0700 |
| commit | c81a748edefd098ea21dd35d4bba03f69412fc26 (patch) | |
| tree | c04d181cc52b0ee66bc0172392cc6414bc5a01ac /arch/sh/Kconfig | |
| parent | f2519d4d4fc4d36f2b58c5614357de9f5b4032fc (diff) | |
| download | lwn-c81a748edefd098ea21dd35d4bba03f69412fc26.tar.gz lwn-c81a748edefd098ea21dd35d4bba03f69412fc26.zip | |
sh: Emulate one-byte cmpxchg
Use the new cmpxchg_emu_u8() to emulate one-byte cmpxchg() on sh.
[ paulmck: Drop two-byte support per Arnd Bergmann feedback. ]
[ paulmck: Apply feedback from Naresh Kamboju. ]
[ Apply Geert Uytterhoeven feedback. ]
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Cc: Andi Shyti <andi.shyti@linux.intel.com>
Cc: Palmer Dabbelt <palmer@rivosinc.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: <linux-sh@vger.kernel.org>
Acked-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Diffstat (limited to 'arch/sh/Kconfig')
| -rw-r--r-- | arch/sh/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig index 1aa3c4a0c5b2..e9103998cca9 100644 --- a/arch/sh/Kconfig +++ b/arch/sh/Kconfig @@ -14,6 +14,7 @@ config SUPERH select ARCH_HIBERNATION_POSSIBLE if MMU select ARCH_MIGHT_HAVE_PC_PARPORT select ARCH_WANT_IPC_PARSE_VERSION + select ARCH_NEED_CMPXCHG_1_EMU select CPU_NO_EFFICIENT_FFS select DMA_DECLARE_COHERENT select GENERIC_ATOMIC64 |