linux-kernel - Re: [tip:perf/core] perf probe: Support DW_OP_call_frame

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Message-ID: <20100507163321.GB15333@erda.amd.com>
Date:	Fri, 7 May 2010 18:34:31 +0200
From:	Robert Richter <robert.richter@....com>
To:	mingo@...hat.com, hpa@...or.com, paulus@...ba.org,
	linux-kernel@...r.kernel.org, acme@...hat.com, fweisbec@...il.com,
	peterz@...radead.org, efault@....de, tglx@...utronix.de,
	mhiramat@...hat.com, mingo@...e.hu
CC:	linux-tip-commits@...r.kernel.org
Subject: Re: [tip:perf/core] perf probe: Support DW_OP_call_frame_cfa in
 debuginfo

On 15.04.10 07:29:18, tip-bot for Masami Hiramatsu wrote:
> diff --git a/tools/perf/util/probe-finder.h b/tools/perf/util/probe-finder.h
> index 2a27132..310ce89 100644
> --- a/tools/perf/util/probe-finder.h
> +++ b/tools/perf/util/probe-finder.h
> @@ -42,6 +42,7 @@ struct probe_finder {
>  	struct list_head	lcache;		/* Line cache for lazy match */
>  
>  	/* For variable searching */
> +	Dwarf_CFI		*cfi;		/* Call Frame Information */

I get the following complile error:

gcc -o builtin-probe.o -c -ggdb3 -Wall -Wextra -std=gnu99 -Werror -O6 -D_FORTIFY_SOURCE=2 -Wformat -Wformat-security -Wformat-y2k -Wshadow -Winit-self -Wpacked -Wredundant-decls -Wstack-protector -Wstrict-aliasing=3 -Wswitch-default -Wswitch-enum -Wno-system-headers -Wundef -Wvolatile-register-var -Wwrite-strings -Wbad-function-cast -Wmissing-declarations -Wmissing-prototypes -Wnested-externs -Wold-style-definition -Wstrict-prototypes -Wdeclaration-after-statement  -fstack-protector-all -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Iutil/include -I/usr/include/elfutils -DDWARF_SUPPORT -DNO_NEWT_SUPPORT -DNO_LIBPERL -DSHA1_HEADER='<openssl/sha.h>'  builtin-probe.c
In file included from builtin-probe.c:43:
util/probe-finder.h:45: error: expected specifier-qualifier-list before ‘Dwarf_CFI’
make: *** [builtin-probe.o] Error 1
build script error: 2

git grep only finds the following:

 $ git grep Dwarf_CFI 
 tools/perf/util/probe-finder.h: Dwarf_CFI               *cfi;           /* Call Frame Information */

Am I missing something?

-Robert

>  	Dwarf_Op		*fb_ops;	/* Frame base attribute */
>  	struct perf_probe_arg	*pvar;		/* Current target variable */
>  	struct kprobe_trace_arg	*tvar;		/* Current result variable */

-- 
Advanced Micro Devices, Inc.
Operating System Research Center
email: robert.richter@....com

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