mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-21 08:19:28 +00:00
b0f82b81fe
Drop this argument now that we always want to rewind only to the state of the first caller. It means frame pointers are not necessary anymore to reliably get the source of an event. But this also means we need this helper to be a macro now, as an inline function is not an option since we need to know when to provide a default implentation. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: Paul Mackerras <paulus@samba.org> Cc: David Miller <davem@davemloft.net> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
35 lines
1.1 KiB
C
35 lines
1.1 KiB
C
/*
|
|
* 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>
|
|
|
|
#define perf_arch_fetch_caller_regs(regs, __ip) \
|
|
do { \
|
|
(regs)->nip = __ip; \
|
|
(regs)->gpr[1] = *(unsigned long *)__get_SP(); \
|
|
asm volatile("mfmsr %0" : "=r" ((regs)->msr)); \
|
|
} while (0)
|
|
#endif
|