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powerpc/bpf: Fix broken uapi for BPF_PROG_TYPE_PERF_EVENT

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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: 002af9391bfb ("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>
This commit is contained in:
Sandipan Das 2018-12-06 14:57:01 +05:30 committed by Michael Ellerman
parent e41b93a6be
commit a6460b03f9
3 changed files with 11 additions and 1 deletions
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2
arch/powerpc/include/asm/perf_event.h
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@ -26,6 +26,8 @@
#include <asm/ptrace.h> #include <asm/ptrace.h>
#include <asm/reg.h> #include <asm/reg.h>
#define perf_arch_bpf_user_pt_regs(regs) &regs->user_regs
/* /*
* Overload regs->result to specify whether we should use the MSR (result * Overload regs->result to specify whether we should use the MSR (result
* is zero) or the SIAR (result is non zero). * is zero) or the SIAR (result is non zero).

1
arch/powerpc/include/uapi/asm/Kbuild
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@ -1,7 +1,6 @@
# UAPI Header export list # UAPI Header export list
include include/uapi/asm-generic/Kbuild.asm include include/uapi/asm-generic/Kbuild.asm
generic-y += bpf_perf_event.h
generic-y += param.h generic-y += param.h
generic-y += poll.h generic-y += poll.h
generic-y += resource.h generic-y += resource.h

9
arch/powerpc/include/uapi/asm/bpf_perf_event.h Normal file
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@ -0,0 +1,9 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _UAPI__ASM_BPF_PERF_EVENT_H__
#define _UAPI__ASM_BPF_PERF_EVENT_H__
#include <asm/ptrace.h>
typedef struct user_pt_regs bpf_user_pt_regs_t;
#endif /* _UAPI__ASM_BPF_PERF_EVENT_H__ */