linux-kernel - Re: [PATCH v2 1/3] perf diff: Support --time filter option

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Message-ID: <20190227092755.GA22793@krava>
Date:   Wed, 27 Feb 2019 10:27:55 +0100
From:   Jiri Olsa <jolsa@...hat.com>
To:     Jin Yao <yao.jin@...ux.intel.com>
Cc:     acme@...nel.org, jolsa@...nel.org, peterz@...radead.org,
        mingo@...hat.com, alexander.shishkin@...ux.intel.com,
        Linux-kernel@...r.kernel.org, ak@...ux.intel.com,
        kan.liang@...el.com, yao.jin@...el.com
Subject: Re: [PATCH v2 1/3] perf diff: Support --time filter option

On Tue, Feb 26, 2019 at 08:11:07PM +0800, Jin Yao wrote:

SNIP

> +	abstime_tmp = abstime_ostr;
>  
>  	data__for_each_file(i, d) {
> -		d->session = perf_session__new(&d->data, false, &tool);
> +		d->session = perf_session__new(&d->data, false, &pdiff.tool);
>  		if (!d->session) {
>  			pr_err("Failed to open %s\n", d->data.path);
>  			ret = -1;
>  			goto out_delete;
>  		}
>  
> +		if (abstime_ostr) {
> +			ret = parse_absolute_time(d, &abstime_tmp);
> +			if (ret < 0)
> +				goto out_delete;
> +		} else if (pdiff.time_str) {
> +			ret = parse_percent_time(d);
> +			if (ret < 0)
> +				goto out_delete;
> +		} else {
> +			pdiff.range_num = 1;

hum, why are we setting range_num to 1 again?

it's really hard to parse this code, maybe
it'd be better in separate loop/function
that would setup just timestamps..


thanks,
jirka