The patch titled
Directed yield: direct yield of spinlocks for powerpc
has been removed from the -mm tree. Its filename is
directed-yield-direct-yield-of-spinlocks-for-powerpc.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: Directed yield: direct yield of spinlocks for powerpc
From: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
[patch 2/3] Directed yield: direct yield of spinlocks for powerpc.
Powerpc already has a directed yield for CONFIG_PREEMPT="n". To make it
work with CONFIG_PREEMPT="y" as well the _raw_{spin,read,write}_relax
primitives need to be defined to call __spin_yield() for spinlocks and
__rw_yield() for rw-locks.
Acked-by: Paul Mackerras <paulus@xxxxxxxxx>
Signed-off-by: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
include/asm-powerpc/spinlock.h | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff -puN include/asm-powerpc/spinlock.h~directed-yield-direct-yield-of-spinlocks-for-powerpc include/asm-powerpc/spinlock.h
--- a/include/asm-powerpc/spinlock.h~directed-yield-direct-yield-of-spinlocks-for-powerpc
+++ a/include/asm-powerpc/spinlock.h
@@ -285,9 +285,9 @@ static __inline__ void __raw_write_unloc
rw->lock = 0;
}
-#define _raw_spin_relax(lock) cpu_relax()
-#define _raw_read_relax(lock) cpu_relax()
-#define _raw_write_relax(lock) cpu_relax()
+#define _raw_spin_relax(lock) __spin_yield(lock)
+#define _raw_read_relax(lock) __rw_yield(lock)
+#define _raw_write_relax(lock) __rw_yield(lock)
#endif /* __KERNEL__ */
#endif /* __ASM_SPINLOCK_H */
_
Patches currently in -mm which might be from schwidefsky@xxxxxxxxxx are
origin.patch
generic-ioremap_page_range-s390-conversion.patch
s390-update-fs3270-to-use-a-struct-pid.patch
add-regs_return_value-helper.patch
introduce-kernel_execve.patch
rename-the-provided-execve-functions-to-kernel_execve.patch
provide-kernel_execve-on-all-architectures.patch
provide-kernel_execve-on-all-architectures-fix.patch
remove-the-use-of-_syscallx-macros-in-uml.patch
sh64-remove-the-use-of-kernel-syscalls.patch
remove-remaining-errno-and-__kernel_syscalls__-references.patch
replace-cad_pid-by-a-struct-pid.patch
replace-cad_pid-by-a-struct-pid-fixes.patch
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