1 /* 2 * Performance event support - hardware-specific disambiguation 3 * 4 * For now this is a compile-time decision, but eventually it should be 5 * runtime. This would allow multiplatform perf event support for e300 (fsl 6 * embedded perf counters) plus server/classic, and would accommodate 7 * devices other than the core which provide their own performance counters. 8 * 9 * Copyright 2010 Freescale Semiconductor, Inc. 10 * 11 * This program is free software; you can redistribute it and/or 12 * modify it under the terms of the GNU General Public License 13 * as published by the Free Software Foundation; either version 14 * 2 of the License, or (at your option) any later version. 15 */ 16 17 #ifdef CONFIG_PPC_PERF_CTRS 18 #include <asm/perf_event_server.h> 19 #endif 20 21 #ifdef CONFIG_FSL_EMB_PERF_EVENT 22 #include <asm/perf_event_fsl_emb.h> 23 #endif 24 25 #ifdef CONFIG_PERF_EVENTS 26 #include <asm/ptrace.h> 27 #include <asm/reg.h> 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] = *(unsigned long *)__get_SP(); \ 38 asm volatile("mfmsr %0" : "=r" ((regs)->msr)); \ 39 } while (0) 40 #endif 41