Cregit: Linux 5.4: perf

Contributors: 7
Author	Tokens	Token Proportion	Commits	Commit Proportion
Frédéric Weisbecker	20	36.36%	1	11.11%
Scott Wood	10	18.18%	1	11.11%
Madhavan Srinivasan	8	14.55%	1	11.11%
Sandipan Das	7	12.73%	1	11.11%
Paul Mackerras	6	10.91%	2	22.22%
Anton Blanchard	2	3.64%	2	22.22%
Thomas Gleixner	2	3.64%	1	11.11%
Total	55		9

/* 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>
#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_pointer();	\
		asm volatile("mfmsr %0" : "=r" ((regs)->msr));	\
	} while (0)

/* To support perf_regs sier update */
extern bool is_sier_available(void);
#endif

perf_event.h