search for: spin_unlock_wait

...ions(-) diff --git a/extras/mini-os/include/spinlock.h b/extras/mini-os/include/spinlock.h index 70cf20f..6604e3c 100644 --- a/extras/mini-os/include/spinlock.h +++ b/extras/mini-os/include/spinlock.h @@ -30,7 +30,7 @@ typedef struct { #define spin_is_locked(x) arch_spin_is_locked(x) -#define spin_unlock_wait(x) do { barrier(); } while(spin_is_locked(x)) +#define spin_unlock_wait(x) arch_spin_unlock_wait(x) #define _spin_trylock(lock) ({_raw_spin_trylock(lock) ? \ diff --git a/extras/mini-os/include/x86/arch_spinlock.h b/extras/mini-os/include/x86/arch_spinlock.h index 4b8faf7..c08b6f1 100644 -...

...different places in the two endianness > system. > > We override some arch_spin_XXX as powerpc has io_sync stuff which makes > sure the io operations are protected by the lock correctly. > > There is another special case, see commit > 2c610022711 ("locking/qspinlock: Fix spin_unlock_wait() some more") > > Signed-off-by: Pan Xinhui <xinhui.pan at linux.vnet.ibm.com> > --- > arch/powerpc/include/asm/qspinlock.h | 66 +++++++++++++++++++++++++++++++ > arch/powerpc/include/asm/spinlock.h | 31 +++++++++------ > arch/powerpc/include/asm/spinlock...

...different places in the two endianness > system. > > We override some arch_spin_XXX as powerpc has io_sync stuff which makes > sure the io operations are protected by the lock correctly. > > There is another special case, see commit > 2c610022711 ("locking/qspinlock: Fix spin_unlock_wait() some more") > > Signed-off-by: Pan Xinhui <xinhui.pan at linux.vnet.ibm.com> > --- > arch/powerpc/include/asm/qspinlock.h | 66 +++++++++++++++++++++++++++++++ > arch/powerpc/include/asm/spinlock.h | 31 +++++++++------ > arch/powerpc/include/asm/spinlock...

...o the ::locked field which sits at different places in the two endianness system. We override some arch_spin_XXX as powerpc has io_sync stuff which makes sure the io operations are protected by the lock correctly. There is another special case, see commit 2c610022711 ("locking/qspinlock: Fix spin_unlock_wait() some more") Signed-off-by: Pan Xinhui <xinhui.pan at linux.vnet.ibm.com> --- arch/powerpc/include/asm/qspinlock.h | 66 +++++++++++++++++++++++++++++++ arch/powerpc/include/asm/spinlock.h | 31 +++++++++------ arch/powerpc/include/asm/spinlock_types.h | 4 ++ arch/powerpc...

Hi All, this is the fairlock patchset. You can apply them and build successfully. patches are based on linux-next qspinlock can avoid waiter starved issue. It has about the same speed in single-thread and it can be much faster in high contention situations especially when the spinlock is embedded within the data structure to be protected. v7 -> v8: add one patch to drop a function call

Hi All, this is the fairlock patchset. You can apply them and build successfully. patches are based on linux-next qspinlock can avoid waiter starved issue. It has about the same speed in single-thread and it can be much faster in high contention situations especially when the spinlock is embedded within the data structure to be protected. v7 -> v8: add one patch to drop a function call

Hi All, this is the fairlock patchset. You can apply them and build successfully. patches are based on linux-next qspinlock can avoid waiter starved issue. It has about the same speed in single-thread and it can be much faster in high contention situations especially when the spinlock is embedded within the data structure to be protected. v8 -> v9: mv qspinlocm config entry to

Hi All, this is the fairlock patchset. You can apply them and build successfully. patches are based on linux-next qspinlock can avoid waiter starved issue. It has about the same speed in single-thread and it can be much faster in high contention situations especially when the spinlock is embedded within the data structure to be protected. v8 -> v9: mv qspinlocm config entry to