/arch/powerpc/include/asm/pmc.h

http://github.com/mirrors/linux · C Header · 46 lines · 31 code · 10 blank · 5 comment · 2 complexity · 3dea5780a915da46ffce6865ed752a1a MD5 · raw file 

    

  1. /* SPDX-License-Identifier: GPL-2.0-or-later */
    2. 

  2. /*
    3. 

  3.  * pmc.h
    4. 

  4.  * Copyright (C) 2004  David Gibson, IBM Corporation
    5. 

  5.  */
    6. 

  6. #ifndef _POWERPC_PMC_H
    7. 

  7. #define _POWERPC_PMC_H
    8. 

  8. #ifdef __KERNEL__
    9. 

  9. 

  10. #include <asm/ptrace.h>
    11. 

  11. 

  12. typedef void (*perf_irq_t)(struct pt_regs *);
    13. 

  13. extern perf_irq_t perf_irq;
    14. 

  14. 

  15. int reserve_pmc_hardware(perf_irq_t new_perf_irq);
    16. 

  16. void release_pmc_hardware(void);
    17. 

  17. void ppc_enable_pmcs(void);
    18. 

  18. 

  19. #ifdef CONFIG_PPC_BOOK3S_64
    20. 

  20. #include <asm/lppaca.h>
    21. 

  21. #include <asm/firmware.h>
    22. 

  22. 

  23. static inline void ppc_set_pmu_inuse(int inuse)
    24. 

  24. {
    25. 

  25. #if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_KVM_BOOK3S_HV_POSSIBLE)
    26. 

  26. 	if (firmware_has_feature(FW_FEATURE_LPAR)) {
    27. 

  27. #ifdef CONFIG_PPC_PSERIES
    28. 

  28. 		get_lppaca()->pmcregs_in_use = inuse;
    29. 

  29. #endif
    30. 

  30. 	}
    31. 

  31. #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
    32. 

  32. 	get_paca()->pmcregs_in_use = inuse;
    33. 

  33. #endif
    34. 

  34. #endif
    35. 

  35. }
    36. 

  36. 

  37. extern void power4_enable_pmcs(void);
    38. 

  38. 

  39. #else /* CONFIG_PPC64 */
    40. 

  40. 

  41. static inline void ppc_set_pmu_inuse(int inuse) { }
    42. 

  42. 

  43. #endif
    44. 

  44. 

  45. #endif /* __KERNEL__ */
    46. 

  46. #endif /* _POWERPC_PMC_H */
    47.