linux-kernel - Re: [PATCH 3/3] perf/probe: Add --bootconfig to output definition in bootconfig format

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Date:   Sat, 19 Jun 2021 00:55:46 +0900
From:   Masami Hiramatsu <mhiramat@...nel.org>
To:     Masami Hiramatsu <mhiramat@...nel.org>
Cc:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        linux-kernel@...r.kernel.org,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        linux-perf-users@...r.kernel.org
Subject: Re: [PATCH 3/3] perf/probe: Add --bootconfig to output definition
 in bootconfig format

Hi,

On Sat,  5 Jun 2021 01:28:43 +0900
Masami Hiramatsu <mhiramat@...nel.org> wrote:

> +int show_bootconfig_events(struct perf_probe_event *pevs, int npevs)
> +{
> +	struct strlist *namelist = strlist__new(NULL, NULL);
> +	struct probe_trace_event *tev;
> +	struct perf_probe_event *pev;
> +	char *cur_name = NULL;
> +	int i, j, ret = 0;
> +
> +	if (!namelist)
> +		return -ENOMEM;
> +
> +	for (j = 0; j < npevs && !ret; j++) {
> +		pev = &pevs[j];
> +		if (pev->group && strcmp(pev->group, "probe"))
> +			pr_warning("WARN: Group name %s is ignored\n", pev->group);
> +		if (pev->uprobes) {
> +			pr_warning("ERROR: Bootconfig doesn't support uprobes\n");
> +			ret = -EINVAL;
> +			break;
> +		}
> +		for (i = 0; i < pev->ntevs && !ret; i++) {
> +			tev = &pev->tevs[i];
> +			/* Skip if the symbol is out of .text or blacklisted */
> +			if (!tev->point.symbol && !pev->uprobes)
> +				continue;
> +
> +			/* Set new name for tev (and update namelist) */
> +			ret = probe_trace_event__set_name(tev, pev,
> +							  namelist, true);
> +			if (ret)
> +				break;
> +
> +			if (!cur_name || strcmp(cur_name, tev->event)) {
> +				printf("%sftrace.event.kprobes.%s.probe = ",

Oops, I must not sleep well. this must be "%s.probes = ".
And I found this forgot to support return probes too.
Let me update it...

Thanks,


-- 
Masami Hiramatsu <mhiramat@...nel.org>