linux-kernel - Re: [PATCH v5 2/5] perf report: Find the inline stack for a given address

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Date:   Sat, 25 Mar 2017 12:48:25 +0530
From:   Ravi Bangoria <ravi.bangoria@...ux.vnet.ibm.com>
To:     Jin Yao <yao.jin@...ux.intel.com>, acme@...nel.org
Cc:     jolsa@...nel.org, Linux-kernel@...r.kernel.org, ak@...ux.intel.com,
        kan.liang@...el.com, milian.wolff@...b.com, yao.jin@...el.com,
        Ravi Bangoria <ravi.bangoria@...ux.vnet.ibm.com>
Subject: Re: [PATCH v5 2/5] perf report: Find the inline stack for a given
 address

Hi Jin / Arnaldo,

I see a build failure with this patch:

On Friday 17 March 2017 03:12 AM, Jin Yao wrote:
> It would be useful for perf to support a mode to query the
> inline stack for a given callgraph address. This would simplify
> finding the right code in code that does a lot of inlining.
>
> The srcline.c has contained the code which supports to translate
> the address to filename:line_nr. This patch just extends the
> function to let it support getting the inline stacks.
...
> +	while (getline(&filename, &len, fp) != -1) {
> +		if (filename_split(filename, &line_nr) != 1) {
> +			free(filename);
> +			goto out;
> +		}
> +
> +		if (inline_list__append(filename, NULL, line_nr, node) != 0)

util/srcline.c: In function ‘addr2inlines’:
util/srcline.c:403:7: error: too few arguments to function ‘inline_list__append’
   if (inline_list__append(filename, NULL, line_nr, node) != 0)
       ^
util/srcline.c:34:12: note: declared here
 static int inline_list__append(char *filename, char *funcname, int line_nr,
            ^
util/srcline.c: At top level:
util/srcline.c:60:13: error: ‘inline_list__reverse’ defined but not used [-Werror=unused-function]
 static void inline_list__reverse(struct inline_node *node)
             ^
cc1: all warnings being treated as errors
mv: cannot stat ‘util/.srcline.o.tmp’: No such file or directory

Thanks,
Ravi