arch/powerpc/include/asm/perf_event.h

Source file repositories/reference/linux-study-clean/arch/powerpc/include/asm/perf_event.h

File Facts

System
Linux kernel
Corpus path
arch/powerpc/include/asm/perf_event.h
Extension
.h
Size
1509 bytes
Lines
49
Domain
Architecture Layer
Bucket
arch/powerpc
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

static inline bool is_sier_available(void) { return false; }
static inline unsigned long get_pmcs_ext_regs(int idx) { return 0; }
#endif

#ifdef CONFIG_FSL_EMB_PERF_EVENT
#include <asm/perf_event_fsl_emb.h>
#endif

#ifdef CONFIG_PERF_EVENTS
#include <asm/ptrace.h>
#include <asm/reg.h>

#define perf_arch_bpf_user_pt_regs(regs) &regs->user_regs

/*
 * Overload regs->result to specify whether we should use the MSR (result
 * is zero) or the SIAR (result is non zero).
 */
#define perf_arch_fetch_caller_regs(regs, __ip)			\
	do {							\
		(regs)->result = 0;				\
		(regs)->nip = __ip;				\
		(regs)->gpr[1] = current_stack_frame();		\
		asm volatile("mfmsr %0" : "=r" ((regs)->msr));	\
	} while (0)

/* To support perf_regs sier update */
extern bool is_sier_available(void);
extern unsigned long get_pmcs_ext_regs(int idx);
/* To define perf extended regs mask value */
extern u64 PERF_REG_EXTENDED_MASK;
#define PERF_REG_EXTENDED_MASK	PERF_REG_EXTENDED_MASK
#endif

Annotation

Implementation Notes