The patch titled
Directed yield: direct yield of spinlocks for powerpc
has been added to the -mm tree. Its filename is
directed-yield-direct-yield-of-spinlocks-for-powerpc.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
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.
Cc: 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 files 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
git-s390.patch
reduce-max_nr_zones-remove-display-of-counters-for-unconfigured-zones-s390-fix.patch
reduce-max_nr_zones-remove-display-of-counters-for-unconfigured-zones-s390-fix-fix.patch
out-of-memory-notifier.patch
out-of-memory-notifier-tidy.patch
bootmem-use-max_dma_address-instead-of-low32limit.patch
own-header-file-for-struct-page.patch
convert-s390-page-handling-macros-to-functions.patch
convert-s390-page-handling-macros-to-functions-fix.patch
s390-fix-cmm-kernel-thread-handling.patch
make-touch_nmi_watchdog-imply-touch_softlockup_watchdog-on-fix.patch
simplify-update_times-avoid-jiffies-jiffies_64-aliasing-problem-2.patch
directed-yield-cpu_relax-variants-for-spinlocks-and-rw-locks.patch
directed-yield-direct-yield-of-spinlocks-for-powerpc.patch
directed-yield-direct-yield-of-spinlocks-for-s390.patch
kill-wall_jiffies.patch
generic-ioremap_page_range-implementation.patch
generic-ioremap_page_range-flush_cache_vmap.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
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