diff options
| author | Scott Wood <scottwood@freescale.com> | 2014-04-08 01:00:49 (GMT) |
|---|---|---|
| committer | Scott Wood <scottwood@freescale.com> | 2014-04-08 19:58:35 (GMT) |
| commit | 47d2261a3fa71cde24263559a4219a25e50d8c89 (patch) | |
| tree | 28774d5b330ccf1b777a3af222d8356918328013 /lib/lockref.c | |
| parent | fb7f27080adc65cd5f341bdf56a1d0c14f316c1b (diff) | |
| parent | 5fb9d37f27351e42f002e372074249f92cbdf815 (diff) | |
| download | linux-fsl-qoriq-47d2261a3fa71cde24263559a4219a25e50d8c89.tar.xz | |
Merge branch 'merge' into sdk-v1.6.x
This reverts v3.13-rc3+ (78fd82238d0e5716) to v3.12, except for
commits which I noticed which appear relevant to the SDK.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Conflicts:
arch/powerpc/include/asm/kvm_host.h
arch/powerpc/kvm/book3s_hv_rmhandlers.S
arch/powerpc/kvm/book3s_interrupts.S
arch/powerpc/kvm/e500.c
arch/powerpc/kvm/e500mc.c
arch/powerpc/sysdev/fsl_soc.h
drivers/Kconfig
drivers/cpufreq/ppc-corenet-cpufreq.c
drivers/dma/fsldma.c
drivers/dma/s3c24xx-dma.c
drivers/misc/Makefile
drivers/mmc/host/sdhci-of-esdhc.c
drivers/mtd/devices/m25p80.c
drivers/net/ethernet/freescale/gianfar.h
drivers/platform/Kconfig
drivers/platform/Makefile
drivers/spi/spi-fsl-espi.c
include/crypto/algapi.h
include/linux/netdev_features.h
include/linux/skbuff.h
include/net/ip.h
net/core/ethtool.c
Diffstat (limited to 'lib/lockref.c')
| -rw-r--r-- | lib/lockref.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/lib/lockref.c b/lib/lockref.c index f07a40d..6f9d434 100644 --- a/lib/lockref.c +++ b/lib/lockref.c @@ -1,8 +1,7 @@ #include <linux/export.h> #include <linux/lockref.h> -#include <linux/mutex.h> -#if USE_CMPXCHG_LOCKREF +#ifdef CONFIG_CMPXCHG_LOCKREF /* * Allow weakly-ordered memory architectures to provide barrier-less @@ -13,6 +12,14 @@ #endif /* + * Allow architectures to override the default cpu_relax() within CMPXCHG_LOOP. + * This is useful for architectures with an expensive cpu_relax(). + */ +#ifndef arch_mutex_cpu_relax +# define arch_mutex_cpu_relax() cpu_relax() +#endif + +/* * Note that the "cmpxchg()" reloads the "old" value for the * failure case. */ @@ -146,7 +153,6 @@ void lockref_mark_dead(struct lockref *lockref) assert_spin_locked(&lockref->lock); lockref->count = -128; } -EXPORT_SYMBOL(lockref_mark_dead); /** * lockref_get_not_dead - Increments count unless the ref is dead |