netdev - Re: [PATCH bpf-next v2 8/9] riscv, bpf: add missing uapi header for BPF_PROG_TYPE_PERF

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Date:   Mon, 23 Dec 2019 10:58:44 -0800 (PST)
From:   Palmer Dabbelt <palmerdabbelt@...gle.com>
To:     Bjorn Topel <bjorn.topel@...il.com>
CC:     daniel@...earbox.net, ast@...nel.org, netdev@...r.kernel.org,
        Bjorn Topel <bjorn.topel@...il.com>,
        linux-riscv@...ts.infradead.org, bpf@...r.kernel.org
Subject:     Re: [PATCH bpf-next v2 8/9] riscv, bpf: add missing uapi header for BPF_PROG_TYPE_PERF_EVENT programs

On Mon, 16 Dec 2019 01:13:42 PST (-0800), Bjorn Topel wrote:
> Add missing uapi header the BPF_PROG_TYPE_PERF_EVENT programs by
> exporting struct user_regs_struct instead of struct pt_regs which is
> in-kernel only.
>
> Signed-off-by: Björn Töpel <bjorn.topel@...il.com>
> ---
>  arch/riscv/include/uapi/asm/bpf_perf_event.h | 9 +++++++++
>  tools/include/uapi/asm/bpf_perf_event.h      | 2 ++
>  2 files changed, 11 insertions(+)
>  create mode 100644 arch/riscv/include/uapi/asm/bpf_perf_event.h
>
> diff --git a/arch/riscv/include/uapi/asm/bpf_perf_event.h b/arch/riscv/include/uapi/asm/bpf_perf_event.h
> new file mode 100644
> index 000000000000..6cb1c2823288
> --- /dev/null
> +++ b/arch/riscv/include/uapi/asm/bpf_perf_event.h
> @@ -0,0 +1,9 @@
> +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
> +#ifndef _UAPI__ASM_BPF_PERF_EVENT_H__
> +#define _UAPI__ASM_BPF_PERF_EVENT_H__
> +
> +#include <asm/ptrace.h>
> +
> +typedef struct user_regs_struct bpf_user_pt_regs_t;
> +
> +#endif /* _UAPI__ASM_BPF_PERF_EVENT_H__ */
> diff --git a/tools/include/uapi/asm/bpf_perf_event.h b/tools/include/uapi/asm/bpf_perf_event.h
> index 13a58531e6fa..39acc149d843 100644
> --- a/tools/include/uapi/asm/bpf_perf_event.h
> +++ b/tools/include/uapi/asm/bpf_perf_event.h
> @@ -2,6 +2,8 @@
>  #include "../../arch/arm64/include/uapi/asm/bpf_perf_event.h"
>  #elif defined(__s390__)
>  #include "../../arch/s390/include/uapi/asm/bpf_perf_event.h"
> +#elif defined(__riscv)
> +#include "../../arch/riscv/include/uapi/asm/bpf_perf_event.h"
>  #else
>  #include <uapi/asm-generic/bpf_perf_event.h>
>  #endif

Reviewed-by: Palmer Dabbelt <palmerdabbelt@...gle.com>
Acked-by: Palmer Dabbelt <palmerdabbelt@...gle.com>