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 22:00:39 +0530
From: Madadi Vineeth Reddy <vineethr@...ux.ibm.com>
To: Chen Yu <yu.c.chen@...el.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,
        Fernand Sieber <sieberf@...zon.com>,
        linux-perf-users <linux-perf-users@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Madadi Vineeth Reddy <vineethr@...ux.ibm.com>
Subject: Re: [PATCH v3] perf sched map: Add command-name, fuzzy-name options
 to filter the output map

Hi Chen Yu,

On 18/06/24 19:22, Chen Yu wrote:
> 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?
> 

Thank you for the suggestion. I will fix it and send a v4.

Thanks and Regards
Madadi Vineeth Reddy

>> +	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