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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bottom_half.h (1013B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef _LINUX_BH_H
      3#define _LINUX_BH_H
      4
      5#include <linux/instruction_pointer.h>
      6#include <linux/preempt.h>
      7
      8#if defined(CONFIG_PREEMPT_RT) || defined(CONFIG_TRACE_IRQFLAGS)
      9extern void __local_bh_disable_ip(unsigned long ip, unsigned int cnt);
     10#else
     11static __always_inline void __local_bh_disable_ip(unsigned long ip, unsigned int cnt)
     12{
     13	preempt_count_add(cnt);
     14	barrier();
     15}
     16#endif
     17
     18static inline void local_bh_disable(void)
     19{
     20	__local_bh_disable_ip(_THIS_IP_, SOFTIRQ_DISABLE_OFFSET);
     21}
     22
     23extern void _local_bh_enable(void);
     24extern void __local_bh_enable_ip(unsigned long ip, unsigned int cnt);
     25
     26static inline void local_bh_enable_ip(unsigned long ip)
     27{
     28	__local_bh_enable_ip(ip, SOFTIRQ_DISABLE_OFFSET);
     29}
     30
     31static inline void local_bh_enable(void)
     32{
     33	__local_bh_enable_ip(_THIS_IP_, SOFTIRQ_DISABLE_OFFSET);
     34}
     35
     36#ifdef CONFIG_PREEMPT_RT
     37extern bool local_bh_blocked(void);
     38#else
     39static inline bool local_bh_blocked(void) { return false; }
     40#endif
     41
     42#endif /* _LINUX_BH_H */