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/* 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; }
#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) ®s->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);
#endif
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