#ifndef __TOOLS_ASM_GENERIC_ATOMIC_H #define __TOOLS_ASM_GENERIC_ATOMIC_H #include #include /* * Atomic operations that C can't guarantee us. Useful for * resource counting etc.. * * Excerpts obtained from the Linux kernel sources. */ #define ATOMIC_INIT(i) { (i) } /** * atomic_read - read atomic variable * @v: pointer of type atomic_t * * Atomically reads the value of @v. */ static inline int atomic_read(const atomic_t *v) { return ACCESS_ONCE((v)->counter); } /** * atomic_set - set atomic variable * @v: pointer of type atomic_t * @i: required value * * Atomically sets the value of @v to @i. */ static inline void atomic_set(atomic_t *v, int i) { v->counter = i; } /** * atomic_inc - increment atomic variable * @v: pointer of type atomic_t * * Atomically increments @v by 1. */ static inline void atomic_inc(atomic_t *v) { __sync_add_and_fetch(&v->counter, 1); } /** * atomic_dec_and_test - decrement and test * @v: pointer of type atomic_t * * Atomically decrements @v by 1 and * returns true if the result is 0, or false for all other * cases. */ static inline int atomic_dec_and_test(atomic_t *v) { return __sync_sub_and_fetch(&v->counter, 1) == 0; } #endif /* __TOOLS_ASM_GENERIC_ATOMIC_H */ net-next plumbingsTobias Klauser
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authorDavid S. Miller <davem@davemloft.net>2017-01-30 22:05:52 -0500
committerDavid S. Miller <davem@davemloft.net>2017-01-30 22:05:52 -0500
commit1bae6c99decf9137069646b593d3439171a8a8e2 (patch)
tree431604a568cd2303973470de326bd9731370a025 /tools/power/cpupower/utils/helpers/misc.c
parent63c190429020a9701b42887ac22c28f287f1762f (diff)
parent2b2d3eb41c920b47df2fcedd1489cf748bd09466 (diff)
Merge branch 'sh_eth-E-DMAC-interrupt-mask-cleanups'
Sergei Shtylyov says: ==================== sh_eth: E-DMAC interrupt mask cleanups Here's a set of 3 patches against DaveM's 'net-next.git' repo. The main goal of this set is to stop using the bare numbers for the E-DMAC interrupt masks. [1/3] sh_eth: rename EESIPR bits [2/3] sh_eth: add missing EESIPR bits [3/3] sh_eth: stop using bare numbers for EESIPR values ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools/power/cpupower/utils/helpers/misc.c')