LCOV - code coverage report
Current view: top level - include/linux/sched - isolation.h (source / functions) Hit Total Coverage
Test: landlock.info Lines: 4 6 66.7 %
Date: 2021-04-22 12:43:58 Functions: 0 0 -

          Line data    Source code
       1             : #ifndef _LINUX_SCHED_ISOLATION_H
       2             : #define _LINUX_SCHED_ISOLATION_H
       3             : 
       4             : #include <linux/cpumask.h>
       5             : #include <linux/init.h>
       6             : #include <linux/tick.h>
       7             : 
       8             : enum hk_flags {
       9             :         HK_FLAG_TIMER           = 1,
      10             :         HK_FLAG_RCU             = (1 << 1),
      11             :         HK_FLAG_MISC            = (1 << 2),
      12             :         HK_FLAG_SCHED           = (1 << 3),
      13             :         HK_FLAG_TICK            = (1 << 4),
      14             :         HK_FLAG_DOMAIN          = (1 << 5),
      15             :         HK_FLAG_WQ              = (1 << 6),
      16             :         HK_FLAG_MANAGED_IRQ     = (1 << 7),
      17             :         HK_FLAG_KTHREAD         = (1 << 8),
      18             : };
      19             : 
      20             : #ifdef CONFIG_CPU_ISOLATION
      21             : DECLARE_STATIC_KEY_FALSE(housekeeping_overridden);
      22             : extern int housekeeping_any_cpu(enum hk_flags flags);
      23             : extern const struct cpumask *housekeeping_cpumask(enum hk_flags flags);
      24             : extern bool housekeeping_enabled(enum hk_flags flags);
      25             : extern void housekeeping_affine(struct task_struct *t, enum hk_flags flags);
      26             : extern bool housekeeping_test_cpu(int cpu, enum hk_flags flags);
      27             : extern void __init housekeeping_init(void);
      28             : 
      29             : #else
      30             : 
      31           0 : static inline int housekeeping_any_cpu(enum hk_flags flags)
      32             : {
      33           0 :         return smp_processor_id();
      34             : }
      35             : 
      36         408 : static inline const struct cpumask *housekeeping_cpumask(enum hk_flags flags)
      37             : {
      38         408 :         return cpu_possible_mask;
      39             : }
      40             : 
      41             : static inline bool housekeeping_enabled(enum hk_flags flags)
      42             : {
      43             :         return false;
      44             : }
      45             : 
      46             : static inline void housekeeping_affine(struct task_struct *t,
      47             :                                        enum hk_flags flags) { }
      48             : static inline void housekeeping_init(void) { }
      49             : #endif /* CONFIG_CPU_ISOLATION */
      50             : 
      51       10628 : static inline bool housekeeping_cpu(int cpu, enum hk_flags flags)
      52             : {
      53             : #ifdef CONFIG_CPU_ISOLATION
      54             :         if (static_branch_unlikely(&housekeeping_overridden))
      55             :                 return housekeeping_test_cpu(cpu, flags);
      56             : #endif
      57       10628 :         return true;
      58             : }
      59             : 
      60             : #endif /* _LINUX_SCHED_ISOLATION_H */

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