| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| 2 | /* |
| 3 | * Performance event support - hardware-specific disambiguation |
| 4 | * |
| 5 | * For now this is a compile-time decision, but eventually it should be |
| 6 | * runtime. This would allow multiplatform perf event support for e300 (fsl |
| 7 | * embedded perf counters) plus server/classic, and would accommodate |
| 8 | * devices other than the core which provide their own performance counters. |
| 9 | * |
| 10 | * Copyright 2010 Freescale Semiconductor, Inc. |
| 11 | */ |
| 12 | |
| 13 | #ifdef CONFIG_PPC_PERF_CTRS |
| 14 | #include <asm/perf_event_server.h> |
| 15 | #else |
| 16 | static inline bool is_sier_available(void) { return false; } |
| 17 | #endif |
| 18 | |
| 19 | #ifdef CONFIG_FSL_EMB_PERF_EVENT |
| 20 | #include <asm/perf_event_fsl_emb.h> |
| 21 | #endif |
| 22 | |
| 23 | #ifdef CONFIG_PERF_EVENTS |
| 24 | #include <asm/ptrace.h> |
| 25 | #include <asm/reg.h> |
| 26 | |
| 27 | #define perf_arch_bpf_user_pt_regs(regs) ®s->user_regs |
| 28 | |
| 29 | /* |
| 30 | * Overload regs->result to specify whether we should use the MSR (result |
| 31 | * is zero) or the SIAR (result is non zero). |
| 32 | */ |
| 33 | #define perf_arch_fetch_caller_regs(regs, __ip) \ |
| 34 | do { \ |
| 35 | (regs)->result = 0; \ |
| 36 | (regs)->nip = __ip; \ |
| 37 | (regs)->gpr[1] = current_stack_pointer(); \ |
| 38 | asm volatile("mfmsr %0" : "=r" ((regs)->msr)); \ |
| 39 | } while (0) |
| 40 | |
| 41 | /* To support perf_regs sier update */ |
| 42 | extern bool is_sier_available(void); |
| 43 | #endif |