diff options
Diffstat (limited to 'arch/powerpc/lib/qspinlock.c')
| -rw-r--r-- | arch/powerpc/lib/qspinlock.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/powerpc/lib/qspinlock.c b/arch/powerpc/lib/qspinlock.c index 2f6c0bed25ea..8e5b8bc3f094 100644 --- a/arch/powerpc/lib/qspinlock.c +++ b/arch/powerpc/lib/qspinlock.c @@ -24,7 +24,11 @@ struct qnodes { /* Tuning parameters */ static int steal_spins __read_mostly = (1 << 5); +#if _Q_SPIN_TRY_LOCK_STEAL == 1 +static const bool maybe_stealers = true; +#else static bool maybe_stealers __read_mostly = true; +#endif static int head_spins __read_mostly = (1 << 8); static bool pv_yield_owner __read_mostly = true; @@ -483,6 +487,10 @@ void pv_spinlocks_init(void) #include <linux/debugfs.h> static int steal_spins_set(void *data, u64 val) { +#if _Q_SPIN_TRY_LOCK_STEAL == 1 + /* MAYBE_STEAL remains true */ + steal_spins = val; +#else static DEFINE_MUTEX(lock); /* @@ -507,6 +515,7 @@ static int steal_spins_set(void *data, u64 val) steal_spins = val; } mutex_unlock(&lock); +#endif return 0; } |