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Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
42 lines
1.2 KiB
C
42 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Performance event support - hardware-specific disambiguation
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*
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* For now this is a compile-time decision, but eventually it should be
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* runtime. This would allow multiplatform perf event support for e300 (fsl
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* embedded perf counters) plus server/classic, and would accommodate
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* devices other than the core which provide their own performance counters.
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*
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* Copyright 2010 Freescale Semiconductor, Inc.
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*/
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#ifdef CONFIG_PPC_PERF_CTRS
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#include <asm/perf_event_server.h>
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#endif
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#ifdef CONFIG_FSL_EMB_PERF_EVENT
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#include <asm/perf_event_fsl_emb.h>
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#endif
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#ifdef CONFIG_PERF_EVENTS
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#include <asm/ptrace.h>
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#include <asm/reg.h>
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#define perf_arch_bpf_user_pt_regs(regs) ®s->user_regs
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/*
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* Overload regs->result to specify whether we should use the MSR (result
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* is zero) or the SIAR (result is non zero).
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*/
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#define perf_arch_fetch_caller_regs(regs, __ip) \
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do { \
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(regs)->result = 0; \
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(regs)->nip = __ip; \
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(regs)->gpr[1] = current_stack_pointer(); \
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asm volatile("mfmsr %0" : "=r" ((regs)->msr)); \
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} while (0)
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/* To support perf_regs sier update */
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extern bool is_sier_available(void);
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#endif
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