linux-kernel - [PATCH 0/2] perf tools: Fix incorrect fd error comparison

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Date:	Thu, 17 Jul 2014 11:43:08 +0300
From:	Adrian Hunter <adrian.hunter@...el.com>
To:	Jiri Olsa <jolsa@...hat.com>
Cc:	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	David Ahern <dsahern@...il.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Namhyung Kim <namhyung@...il.com>,
	Paul Mackerras <paulus@...ba.org>,
	Stephane Eranian <eranian@...gle.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH 0/2] perf tools: Fix incorrect fd error comparison

On 07/16/2014 05:20 PM, Jiri Olsa wrote:> On Mon, Jul 14, 2014 at 01:02:42PM +0300, Adrian Hunter wrote:
>> Add 'data_status' to record whether a dso has data
>> (i.e. an object file) as follows:
>>
>> 	dso->data_status	meaning
>> 	----------------------------------
>> 	0			don't know
>> 	-1			no data
>> 	1			has data
> 
> please add enum for this

Ok

> 
>>
>> Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
>> ---
>>  tools/perf/util/dso.c | 5 ++++-
>>  tools/perf/util/dso.h | 1 +
>>  2 files changed, 5 insertions(+), 1 deletion(-)
>>
>> diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c
>> index fc006fe..91a4eb4 100644
>> --- a/tools/perf/util/dso.c
>> +++ b/tools/perf/util/dso.c
>> @@ -556,8 +556,11 @@ static ssize_t data_read_offset(struct dso *dso, u64 offset,
>>  ssize_t dso__data_read_offset(struct dso *dso, struct machine *machine,
>>  			      u64 offset, u8 *data, ssize_t size)
>>  {
>> -	if (dso__data_fd(dso, machine) < 0)
>> +	if (dso__data_fd(dso, machine) < 0) {
>> +		dso->data.data_status = -1;
>>  		return -1;
>> +	}
>> +	dso->data.data_status = 1;
> 
> we have more callers to dso__data_fd, so I think we want
> to setup dso->data.data_status within dso__data_fd

Ok.  Here are 2 patches because I noticed another thing.

Adrian Hunter (2):
      perf tools: Fix incorrect fd error comparison
      perf tools: Record whether a dso has data

 tools/perf/util/dso.c | 27 +++++++++++++++++----------
 tools/perf/util/dso.h |  7 +++++++
 2 files changed, 24 insertions(+), 10 deletions(-)
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