linux-kernel - Re: [PATCH 06/40] perf tools: Add HEADER_DATA

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Message-ID: <20150518181723.GC16373@krava.redhat.com>
Date:	Mon, 18 May 2015 20:17:23 +0200
From:	Jiri Olsa <jolsa@...hat.com>
To:	Namhyung Kim <namhyung@...nel.org>
Cc:	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Ingo Molnar <mingo@...nel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	LKML <linux-kernel@...r.kernel.org>,
	David Ahern <dsahern@...il.com>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Andi Kleen <andi@...stfloor.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH 06/40] perf tools: Add HEADER_DATA_INDEX feature

On Mon, May 18, 2015 at 09:30:21AM +0900, Namhyung Kim wrote:

SNIP

>  
> +static int process_data_index(struct perf_file_section *section __maybe_unused,
> +			      struct perf_header *ph, int fd,
> +			      void *data __maybe_unused)
> +{
> +	ssize_t ret;
> +	u64 nr_idx;
> +	unsigned i;
> +	struct perf_file_section *idx;
> +
> +	ret = readn(fd, &nr_idx, sizeof(nr_idx));
> +	if (ret != sizeof(nr_idx))
> +		return -1;
> +
> +	if (ph->needs_swap)
> +		nr_idx = bswap_64(nr_idx);
> +
> +	idx = calloc(nr_idx, sizeof(*idx));
> +	if (idx == NULL)
> +		return -1;
> +
> +	for (i = 0; i < nr_idx; i++) {
> +		ret = readn(fd, &idx[i], sizeof(*idx));
> +		if (ret != sizeof(*idx))

missing			free(idx);

jirka

> +			return ret;
> +
> +		if (ph->needs_swap) {
> +			idx[i].offset = bswap_64(idx[i].offset);
> +			idx[i].size   = bswap_64(idx[i].size);
> +		}
> +	}
> +
> +	ph->index = idx;
> +	ph->nr_index = nr_idx;
> +	return 0;

SNIP

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