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| author |  Nicholas Piggin <npiggin@gmail.com>
| 2020-07-24 23:14:18 +1000 |
|---|---|---|
| committer |  Michael Ellerman <mpe@ellerman.id.au>
| 2020-07-26 23:34:26 +1000 |
| commit | 20d444d06f97504d165b08558678b4737dcefb02 (patch) | |
| tree | 841a7d48164363c433e2314118ee0df35a125c2f /arch/powerpc/lib/locks.c | |
| parent | powerpc/numa: Limit possible nodes to within num_possible_nodes (diff) | |
| download | linux-20d444d06f97504d165b08558678b4737dcefb02.tar.gz linux-20d444d06f97504d165b08558678b4737dcefb02.tar.bz2 linux-20d444d06f97504d165b08558678b4737dcefb02.zip | |
powerpc/pseries: Move some PAPR paravirt functions to their own file
These functions will be used by the queued spinlock implementation,
and may be useful elsewhere too, so move them out of spinlock.h.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Acked-by: Waiman Long <longman@redhat.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200724131423.1362108-2-npiggin@gmail.com
Diffstat (limited to 'arch/powerpc/lib/locks.c')
| -rw-r--r-- | arch/powerpc/lib/locks.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/arch/powerpc/lib/locks.c b/arch/powerpc/lib/locks.c index 6440d5943c00..04165b7a163f 100644 --- a/arch/powerpc/lib/locks.c +++ b/arch/powerpc/lib/locks.c @@ -27,14 +27,14 @@ void splpar_spin_yield(arch_spinlock_t *lock) return; holder_cpu = lock_value & 0xffff; BUG_ON(holder_cpu >= NR_CPUS); - yield_count = be32_to_cpu(lppaca_of(holder_cpu).yield_count); + + yield_count = yield_count_of(holder_cpu); if ((yield_count & 1) == 0) return; /* virtual cpu is currently running */ rmb(); if (lock->slock != lock_value) return; /* something has changed */ - plpar_hcall_norets(H_CONFER, - get_hard_smp_processor_id(holder_cpu), yield_count); + yield_to_preempted(holder_cpu, yield_count); } EXPORT_SYMBOL_GPL(splpar_spin_yield); @@ -53,13 +53,13 @@ void splpar_rw_yield(arch_rwlock_t *rw) return; /* no write lock at present */ holder_cpu = lock_value & 0xffff; BUG_ON(holder_cpu >= NR_CPUS); - yield_count = be32_to_cpu(lppaca_of(holder_cpu).yield_count); + + yield_count = yield_count_of(holder_cpu); if ((yield_count & 1) == 0) return; /* virtual cpu is currently running */ rmb(); if (rw->lock != lock_value) return; /* something has changed */ - plpar_hcall_norets(H_CONFER, - get_hard_smp_processor_id(holder_cpu), yield_count); + yield_to_preempted(holder_cpu, yield_count); } #endif |