mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-27 06:34:11 +08:00
62c7a1e9ae
Valentin Rothberg reported that we use CONFIG_QUEUED_SPINLOCKS in arch/x86/kernel/paravirt_patch_32.c, while the symbol is called CONFIG_QUEUED_SPINLOCK. (Note the extra 'S') But the typo was natural: the proper English term for such a generic object would be 'queued spinlocks' - so rename this and related symbols accordingly to the plural form. Reported-by: Valentin Rothberg <valentinrothberg@gmail.com> Cc: Douglas Hatch <doug.hatch@hp.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Scott J Norton <scott.norton@hp.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Waiman Long <Waiman.Long@hp.com> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
43 lines
1.1 KiB
C
43 lines
1.1 KiB
C
/*
|
|
* Split spinlock implementation out into its own file, so it can be
|
|
* compiled in a FTRACE-compatible way.
|
|
*/
|
|
#include <linux/spinlock.h>
|
|
#include <linux/module.h>
|
|
#include <linux/jump_label.h>
|
|
|
|
#include <asm/paravirt.h>
|
|
|
|
#ifdef CONFIG_QUEUED_SPINLOCKS
|
|
__visible void __native_queued_spin_unlock(struct qspinlock *lock)
|
|
{
|
|
native_queued_spin_unlock(lock);
|
|
}
|
|
|
|
PV_CALLEE_SAVE_REGS_THUNK(__native_queued_spin_unlock);
|
|
|
|
bool pv_is_native_spin_unlock(void)
|
|
{
|
|
return pv_lock_ops.queued_spin_unlock.func ==
|
|
__raw_callee_save___native_queued_spin_unlock;
|
|
}
|
|
#endif
|
|
|
|
struct pv_lock_ops pv_lock_ops = {
|
|
#ifdef CONFIG_SMP
|
|
#ifdef CONFIG_QUEUED_SPINLOCKS
|
|
.queued_spin_lock_slowpath = native_queued_spin_lock_slowpath,
|
|
.queued_spin_unlock = PV_CALLEE_SAVE(__native_queued_spin_unlock),
|
|
.wait = paravirt_nop,
|
|
.kick = paravirt_nop,
|
|
#else /* !CONFIG_QUEUED_SPINLOCKS */
|
|
.lock_spinning = __PV_IS_CALLEE_SAVE(paravirt_nop),
|
|
.unlock_kick = paravirt_nop,
|
|
#endif /* !CONFIG_QUEUED_SPINLOCKS */
|
|
#endif /* SMP */
|
|
};
|
|
EXPORT_SYMBOL(pv_lock_ops);
|
|
|
|
struct static_key paravirt_ticketlocks_enabled = STATIC_KEY_INIT_FALSE;
|
|
EXPORT_SYMBOL(paravirt_ticketlocks_enabled);
|