Cregit: Linux 5.15: perf

Contributors: 10
Author	Tokens	Token Proportion	Commits	Commit Proportion
Athira Rajeev	23	22.77%	1	8.33%
Madhavan Srinivasan	22	21.78%	2	16.67%
Frédéric Weisbecker	20	19.80%	1	8.33%
Scott Wood	10	9.90%	1	8.33%
Anju T	9	8.91%	1	8.33%
Sandipan Das	7	6.93%	1	8.33%
Paul Mackerras	6	5.94%	2	16.67%
Thomas Gleixner	2	1.98%	1	8.33%
Michael Ellerman	1	0.99%	1	8.33%
Anton Blanchard	1	0.99%	1	8.33%
Total	101		12

/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Performance event support - hardware-specific disambiguation
 *
 * For now this is a compile-time decision, but eventually it should be
 * runtime.  This would allow multiplatform perf event support for e300 (fsl
 * embedded perf counters) plus server/classic, and would accommodate
 * devices other than the core which provide their own performance counters.
 *
 * Copyright 2010 Freescale Semiconductor, Inc.
 */

#ifdef CONFIG_PPC_PERF_CTRS
#include <asm/perf_event_server.h>
#else
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

perf_event.h