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- /*
- * 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.
- *
- * 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.
- */
- #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>
- /*
- * 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)
- #endif
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