Re: [PATCH v7 14/14] perf callchain: Support aarch64 cross-platform

From	Jiri Olsa <jolsa@redhat.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH v7 14/14] perf callchain: Support aarch64 cross-platform
Date	2016-06-01 10:50 +0200
Message-ID	<rFa0G-67A-19@gated-at.bofh.it> (permalink)
References	<rEPSh-20r-5@gated-at.bofh.it> <rEQ20-24b-75@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On Tue, May 31, 2016 at 11:19:12AM +0000, He Kuang wrote:

SNIP

> diff --git a/tools/perf/util/Build b/tools/perf/util/Build
> index 7746e09..fced833 100644
> --- a/tools/perf/util/Build
> +++ b/tools/perf/util/Build
> @@ -102,6 +102,7 @@ libperf-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw.o
>  libperf-$(CONFIG_LOCAL_LIBUNWIND)    += unwind-libunwind-local.o
>  libperf-$(CONFIG_LIBUNWIND)          += unwind-libunwind.o
>  libperf-$(CONFIG_LIBUNWIND_X86)      += libunwind/x86_32.o
> +libperf-$(CONFIG_LIBUNWIND_AARCH64)  += libunwind/arm64.o
>  
>  libperf-$(CONFIG_LIBBABELTRACE) += data-convert-bt.o
>  
> diff --git a/tools/perf/util/libunwind/arm64.c b/tools/perf/util/libunwind/arm64.c
> new file mode 100644
> index 0000000..99c0d42
> --- /dev/null
> +++ b/tools/perf/util/libunwind/arm64.c
> @@ -0,0 +1,18 @@

also please add some comments in here describing how this file works
like that it setups defines to compile arch specific binary from the
generic one, which is then represented by the arm64_unwind_libunwind_ops,
which get assigned for each arm64 thread 

or something along those lines

thanks,
jirka

> +#define REMOTE_UNWIND_LIBUNWIND
> +
> +#define LIBUNWIND__ARCH_REG_ID libunwind__arm64_reg_id
> +
> +#include "unwind.h"
> +#include "debug.h"
> +#include "libunwind-aarch64.h"
> +#include <../../../../arch/arm64/include/uapi/asm/perf_regs.h>
> +#include "../../arch/arm64/util/unwind-libunwind.c"
> +
> +#undef NO_LIBUNWIND_DEBUG_FRAME
> +#ifdef NO_LIBUNWIND_DEBUG_FRAME_AARCH64
> +#define NO_LIBUNWIND_DEBUG_FRAME
> +#endif
> +#include "util/unwind-libunwind-local.c"
> +
> +struct unwind_libunwind_ops *
> +arm64_unwind_libunwind_ops = &_unwind_libunwind_ops;

SNIP

Thread

[PATCH v7 00/14] Add support for remote unwind He Kuang <hekuang@huawei.com> - 2016-05-31 13:30 +0200
  [PATCH v7 11/14] perf tools: Change fixed name of libunwind__arch_reg_id to macro He Kuang <hekuang@huawei.com> - 2016-05-31 13:30 +0200
  [PATCH v7 06/14] perf tools: Separate local/remote libunwind config He Kuang <hekuang@huawei.com> - 2016-05-31 13:30 +0200
    Re: [PATCH v7 06/14] perf tools: Separate local/remote libunwind  config Jiri Olsa <jolsa@redhat.com> - 2016-06-01 10:40 +0200
  [PATCH v7 07/14] perf tools: Rename unwind-libunwind.c to unwind-libunwind-local.c He Kuang <hekuang@huawei.com> - 2016-05-31 13:30 +0200
  [PATCH v7 13/14] perf callchain: Support x86 target platform He Kuang <hekuang@huawei.com> - 2016-05-31 13:30 +0200
    Re: [PATCH v7 13/14] perf callchain: Support x86 target platform Jiri Olsa <jolsa@redhat.com> - 2016-06-01 10:50 +0200
      Re: [PATCH v7 13/14] perf callchain: Support x86 target platform Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-06-01 14:50 +0200
        Re: [PATCH v7 13/14] perf callchain: Support x86 target platform Jiri Olsa <jolsa@redhat.com> - 2016-06-01 15:20 +0200
    Re: [PATCH v7 13/14] perf callchain: Support x86 target platform Jiri Olsa <jolsa@redhat.com> - 2016-06-01 10:50 +0200
      Re: [PATCH v7 13/14] perf callchain: Support x86 target platform Hekuang <hekuang@huawei.com> - 2016-06-01 12:00 +0200
    Re: [PATCH v7 13/14] perf callchain: Support x86 target platform Jiri Olsa <jolsa@redhat.com> - 2016-06-01 10:50 +0200
  [PATCH v7 09/14] perf tools: Export normalize_arch() function He Kuang <hekuang@huawei.com> - 2016-05-31 13:30 +0200
  [PATCH v7 03/14] perf tools: Introducing struct unwind_libunwind_ops for local unwind He Kuang <hekuang@huawei.com> - 2016-05-31 13:30 +0200
    Re: [PATCH v7 03/14] perf tools: Introducing struct  unwind_libunwind_ops for local unwind Jiri Olsa <jolsa@redhat.com> - 2016-06-01 10:40 +0200
    Re: [PATCH v7 03/14] perf tools: Introducing struct  unwind_libunwind_ops for local unwind Jiri Olsa <jolsa@redhat.com> - 2016-06-01 10:50 +0200
  [PATCH v7 14/14] perf callchain: Support aarch64 cross-platform He Kuang <hekuang@huawei.com> - 2016-05-31 13:30 +0200
    Re: [PATCH v7 14/14] perf callchain: Support aarch64 cross-platform Jiri Olsa <jolsa@redhat.com> - 2016-06-01 10:50 +0200
      Re: [PATCH v7 14/14] perf callchain: Support aarch64 cross-platform Hekuang <hekuang@huawei.com> - 2016-06-01 12:10 +0200

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