linux-kernel - Re: [PATCH 3/4] perf annotate: configure objdump path at compile time

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Date:	Fri, 21 Sep 2012 09:17:27 +0900
From:	Namhyung Kim <namhyung@...nel.org>
To:	Irina Tirdea <irina.tirdea@...il.com>
Cc:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Ingo Molnar <mingo@...nel.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	LKML <linux-kernel@...r.kernel.org>,
	Paul Mackerras <paulus@...ba.org>,
	David Ahern <dsahern@...il.com>,
	Pekka Enberg <penberg@...nel.org>,
	Jiri Olsa <jolsa@...hat.com>,
	Irina Tirdea <irina.tirdea@...el.com>
Subject: Re: [PATCH 3/4] perf annotate: configure objdump path at compile time

Hi Irina,

On Fri, 21 Sep 2012 01:13:34 +0300, Irina Tirdea wrote:
> From: Irina Tirdea <irina.tirdea@...el.com>
>
> The default name for objdump is "objdump". For cross-compiling the name of
> objdump will be different (e.g. arm-eabi-objdump in Android).
>
> Setting the default objdump name in the Makefile with PERF_OBJDUMP_PATH.

Not a big deal, but how about DEFAULT_OBJDUMP_PATH?


>
> Signed-off-by: Irina Tirdea <irina.tirdea@...el.com>
> ---
>  tools/perf/Makefile        |    4 ++++
>  tools/perf/util/annotate.c |    2 +-
>  2 files changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/tools/perf/Makefile b/tools/perf/Makefile
> index 9021a1f..3d28150 100644
> --- a/tools/perf/Makefile
> +++ b/tools/perf/Makefile
> @@ -140,6 +140,7 @@ ETC_PERFCONFIG = etc/perfconfig
>  endif
>  lib = lib
>  PERF_TMP_DIR = /tmp
> +objdump = objdump

More usual pattern would be

OBJDUMP = $(CROSS_COMPILE)objdump

? And it'd more fit to the description.

Thanks,
Namhyung


>  
>  export prefix bindir sharedir sysconfdir
>  
> @@ -883,6 +884,9 @@ $(OUTPUT)util/exec_cmd.o: util/exec_cmd.c $(OUTPUT)PERF-CFLAGS
>  		'-DPREFIX="$(prefix_SQ)"' \
>  		$<
>  
> +$(OUTPUT)util/annotate.o: util/annotate.c $(OUTPUT)PERF-CFLAGS
> +	$(QUIET_CC)$(CC) -o $@ -c $(ALL_CFLAGS) -DPERF_OBJDUMP_PATH='"$(objdump)"' $<
> +
>  $(OUTPUT)util/config.o: util/config.c $(OUTPUT)PERF-CFLAGS
>  	$(QUIET_CC)$(CC) -o $@ -c $(ALL_CFLAGS) -DETC_PERFCONFIG='"$(ETC_PERFCONFIG_SQ)"' $<
>  
> diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
> index f0a9103..a45ac77 100644
> --- a/tools/perf/util/annotate.c
> +++ b/tools/perf/util/annotate.c
> @@ -824,7 +824,7 @@ fallback:
>  		 "%s %s%s --start-address=0x%016" PRIx64
>  		 " --stop-address=0x%016" PRIx64
>  		 " -d %s %s -C %s|grep -v %s|expand",
> -		 objdump_path ? objdump_path : "objdump",
> +		 objdump_path ? objdump_path : PERF_OBJDUMP_PATH,
>  		 disassembler_style ? "-M " : "",
>  		 disassembler_style ? disassembler_style : "",
>  		 map__rip_2objdump(map, sym->start),
--
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