linux-kernel - Re: [PATCH 5/5] perf record: Put a copy of kcore into the perf.data directory

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Date:   Mon, 7 Oct 2019 13:20:39 +0200
From:   Jiri Olsa <jolsa@...hat.com>
To:     Adrian Hunter <adrian.hunter@...el.com>
Cc:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5/5] perf record: Put a copy of kcore into the perf.data
 directory

On Fri, Oct 04, 2019 at 11:31:21AM +0300, Adrian Hunter wrote:

SNIP

>  	bool	      strict_freq;
>  	bool	      sample_id;
>  	bool	      no_bpf_event;
> +	bool	      kcore;
>  	unsigned int  freq;
>  	unsigned int  mmap_pages;
>  	unsigned int  auxtrace_mmap_pages;
> diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
> index 061bb4d6a3f5..bfa80fe8d369 100644
> --- a/tools/perf/util/session.c
> +++ b/tools/perf/util/session.c
> @@ -230,6 +230,10 @@ struct perf_session *perf_session__new(struct perf_data *data,
>  			if (ret)
>  				goto out_delete;
>  			}
> +
> +			if (!symbol_conf.kallsyms_name &&
> +			    !symbol_conf.vmlinux_name)
> +				symbol_conf.kallsyms_name = perf_data__kallsyms_name(data);

hum, should this also depend on rec->opts.kcore ?

jirka