linux-kernel - Re: [PATCH v3] perf sched map: Add command-name, fuzzy-name options to filter the output map

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Date: Tue, 18 Jun 2024 21:52:15 +0800
From: Chen Yu <yu.c.chen@...el.com>
To: Madadi Vineeth Reddy <vineethr@...ux.ibm.com>
CC: Arnaldo Carvalho de Melo <acme@...nel.org>, Namhyung Kim
	<namhyung@...nel.org>, Ian Rogers <irogers@...gle.com>, Athira Rajeev
	<atrajeev@...ux.vnet.ibm.com>, 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@...nel.org>,
	Adrian Hunter <adrian.hunter@...el.com>, Kan Liang
	<kan.liang@...ux.intel.com>, <acme@...hat.com>, linux-perf-users
	<linux-perf-users@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3] perf sched map: Add command-name, fuzzy-name options
 to filter the output map

On 2024-06-17 at 18:19:30 +0530, Madadi Vineeth Reddy wrote:

> +static struct CommandList *parse_commands(const char *commands)
> +{
> +	char *commands_copy = strdup(commands);

Should we check if commands_copy is NULL in case of allocation failure?

> +	char *token = strtok(commands_copy, ",");
> +	struct CommandList *cmd_list = malloc(sizeof(struct CommandList));
> +
> +	if (cmd_list == NULL)
> +		return NULL;
> +
> +	cmd_list->command_count = 0;
> +	cmd_list->command_list = NULL;
> +
> +	while (token != NULL) {
> +		cmd_list->command_list = realloc(cmd_list->command_list, sizeof(char *)
> +							*(cmd_list->command_count + 1));
> +		cmd_list->command_list[cmd_list->command_count] = strdup(token);

ditto.

thanks,
Chenyu