mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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c4222e4635
Pull sparc fixes from David Miller: "Sparc sparse fixes from Sam Ravnborg" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next: (67 commits) sparc64: fix sparse warnings in int_64.c sparc64: fix sparse warning in ftrace.c sparc64: fix sparse warning in kprobes.c sparc64: fix sparse warning in kgdb_64.c sparc64: fix sparse warnings in compat_audit.c sparc64: fix sparse warnings in init_64.c sparc64: fix sparse warnings in aes_glue.c sparc: fix sparse warnings in smp_32.c + smp_64.c sparc64: fix sparse warnings in perf_event.c sparc64: fix sparse warnings in kprobes.c sparc64: fix sparse warning in tsb.c sparc64: clean up compat_sigset_t.seta handling sparc64: fix sparse "Should it be static?" warnings in signal32.c sparc64: fix sparse warnings in sys_sparc32.c sparc64: fix sparse warning in pci.c sparc64: fix sparse warnings in smp_64.c sparc64: fix sparse warning in prom_64.c sparc64: fix sparse warning in btext.c sparc64: fix sparse warnings in sys_sparc_64.c + unaligned_64.c sparc64: fix sparse warning in process_64.c ... Conflicts: arch/sparc/include/asm/pgtable_64.h
113 lines
3.1 KiB
C
113 lines
3.1 KiB
C
/* atomic.h: Thankfully the V9 is at least reasonable for this
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* stuff.
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*
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* Copyright (C) 1996, 1997, 2000, 2012 David S. Miller (davem@redhat.com)
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*/
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#ifndef __ARCH_SPARC64_ATOMIC__
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#define __ARCH_SPARC64_ATOMIC__
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#include <linux/types.h>
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#include <asm/cmpxchg.h>
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#include <asm/barrier.h>
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#define ATOMIC_INIT(i) { (i) }
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#define ATOMIC64_INIT(i) { (i) }
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#define atomic_read(v) (*(volatile int *)&(v)->counter)
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#define atomic64_read(v) (*(volatile long *)&(v)->counter)
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#define atomic_set(v, i) (((v)->counter) = i)
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#define atomic64_set(v, i) (((v)->counter) = i)
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void atomic_add(int, atomic_t *);
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void atomic64_add(long, atomic64_t *);
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void atomic_sub(int, atomic_t *);
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void atomic64_sub(long, atomic64_t *);
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int atomic_add_ret(int, atomic_t *);
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long atomic64_add_ret(long, atomic64_t *);
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int atomic_sub_ret(int, atomic_t *);
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long atomic64_sub_ret(long, atomic64_t *);
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#define atomic_dec_return(v) atomic_sub_ret(1, v)
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#define atomic64_dec_return(v) atomic64_sub_ret(1, v)
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#define atomic_inc_return(v) atomic_add_ret(1, v)
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#define atomic64_inc_return(v) atomic64_add_ret(1, v)
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#define atomic_sub_return(i, v) atomic_sub_ret(i, v)
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#define atomic64_sub_return(i, v) atomic64_sub_ret(i, v)
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#define atomic_add_return(i, v) atomic_add_ret(i, v)
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#define atomic64_add_return(i, v) atomic64_add_ret(i, v)
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/*
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* atomic_inc_and_test - increment and test
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* @v: pointer of type atomic_t
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*
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* Atomically increments @v by 1
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* and returns true if the result is zero, or false for all
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* other cases.
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*/
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#define atomic_inc_and_test(v) (atomic_inc_return(v) == 0)
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#define atomic64_inc_and_test(v) (atomic64_inc_return(v) == 0)
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#define atomic_sub_and_test(i, v) (atomic_sub_ret(i, v) == 0)
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#define atomic64_sub_and_test(i, v) (atomic64_sub_ret(i, v) == 0)
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#define atomic_dec_and_test(v) (atomic_sub_ret(1, v) == 0)
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#define atomic64_dec_and_test(v) (atomic64_sub_ret(1, v) == 0)
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#define atomic_inc(v) atomic_add(1, v)
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#define atomic64_inc(v) atomic64_add(1, v)
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#define atomic_dec(v) atomic_sub(1, v)
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#define atomic64_dec(v) atomic64_sub(1, v)
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#define atomic_add_negative(i, v) (atomic_add_ret(i, v) < 0)
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#define atomic64_add_negative(i, v) (atomic64_add_ret(i, v) < 0)
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#define atomic_cmpxchg(v, o, n) (cmpxchg(&((v)->counter), (o), (n)))
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#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
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static inline int __atomic_add_unless(atomic_t *v, int a, int u)
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{
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int c, old;
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c = atomic_read(v);
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for (;;) {
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if (unlikely(c == (u)))
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break;
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old = atomic_cmpxchg((v), c, c + (a));
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if (likely(old == c))
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break;
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c = old;
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}
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return c;
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}
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#define atomic64_cmpxchg(v, o, n) \
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((__typeof__((v)->counter))cmpxchg(&((v)->counter), (o), (n)))
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#define atomic64_xchg(v, new) (xchg(&((v)->counter), new))
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static inline long atomic64_add_unless(atomic64_t *v, long a, long u)
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{
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long c, old;
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c = atomic64_read(v);
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for (;;) {
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if (unlikely(c == (u)))
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break;
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old = atomic64_cmpxchg((v), c, c + (a));
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if (likely(old == c))
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break;
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c = old;
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}
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return c != (u);
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}
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#define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0)
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long atomic64_dec_if_positive(atomic64_t *v);
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#endif /* !(__ARCH_SPARC64_ATOMIC__) */
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