a6460b03f9
Now that there are different variants of pt_regs for userspace and
kernel, the uapi for the BPF_PROG_TYPE_PERF_EVENT program type must be
changed by exporting the user_pt_regs structure instead of the pt_regs
structure that is in-kernel only.
Fixes: 002af9391b ("powerpc: Split user/kernel definitions of struct pt_regs")
Signed-off-by: Sandipan Das <sandipan@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
43 lines
1.3 KiB
C
43 lines
1.3 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_bpf_user_pt_regs(regs) ®s->user_regs
|
|
|
|
/*
|
|
* 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
|