cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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aq_utils.h (934B)

      1/* SPDX-License-Identifier: GPL-2.0-only */
      2/*
      3 * aQuantia Corporation Network Driver
      4 * Copyright (C) 2014-2017 aQuantia Corporation. All rights reserved
      5 */
      6
      7/* File aq_utils.h: Useful macro and structures used in all layers of driver. */
      8
      9#ifndef AQ_UTILS_H
     10#define AQ_UTILS_H
     11
     12#include "aq_common.h"
     13
     14static inline void aq_utils_obj_set(atomic_t *flags, u32 mask)
     15{
     16	unsigned long flags_old, flags_new;
     17
     18	do {
     19		flags_old = atomic_read(flags);
     20		flags_new = flags_old | (mask);
     21	} while (atomic_cmpxchg(flags, flags_old, flags_new) != flags_old);
     22}
     23
     24static inline void aq_utils_obj_clear(atomic_t *flags, u32 mask)
     25{
     26	unsigned long flags_old, flags_new;
     27
     28	do {
     29		flags_old = atomic_read(flags);
     30		flags_new = flags_old & ~(mask);
     31	} while (atomic_cmpxchg(flags, flags_old, flags_new) != flags_old);
     32}
     33
     34static inline bool aq_utils_obj_test(atomic_t *flags, u32 mask)
     35{
     36	return atomic_read(flags) & mask;
     37}
     38
     39#endif /* AQ_UTILS_H */