Re: [dpdk-dev] [PATCH v5 3/8] Move common functions in eal_lcore.c

[Thomas Monjalon <thomas.monjalon@6wind.com>]

2015-04-09 12:40, Ravi Kerur:
> Changes in v5
> Rebase to latest code.
> 
> Changes in v4
> Implement cpu_detected() for BSD.
> Have common RTE_LOG for Linux and BSD in rte_eal_cpu_init().
> Remove RTE_EXEC_ENV_BSDAPP in common file.
> 
> Changes in v3
> Changed subject to be more explicit on file name inclusion.
> 
> Changes in v2
> None
> 
> Changes in v1
> Move common function in eal_lcore.c to librte_eal/common/
> eal_common_lcore.c file.
> 
> Following function is  moved to eal_common_lcore.c file
> 
> int rte_eal_cpu_init(void);
> 
> Use RTE_EXEC_ENV_BSDAPP to differentiate minor differences in
> common function.
> Makefile changes to reflect new file added.
> Fix checkpatch warnings and errors.
> 
> Signed-off-by: Ravi Kerur <rkerur@gmail.com>
[...]
> --- a/lib/librte_eal/bsdapp/eal/eal_lcore.c
> +++ b/lib/librte_eal/bsdapp/eal/eal_lcore.c
[...]
>  static int
> -get_ncpus(void)
> +eal_get_ncpus(void)

Why not keep it static as it seems to be specific to BSD handling?

>  {
>  	int mib[2] = {CTL_HW, HW_NCPU};
>  	int ncpu;
> @@ -59,63 +62,18 @@ get_ncpus(void)
>  	return ncpu;
>  }
[...]
> -unsigned
> -eal_cpu_socket_id(__rte_unused unsigned cpu_id)
> +/* Check if a cpu is present by the presence of the
> + * cpu information for it.
> + */
> +int
> +eal_cpu_detected(unsigned lcore_id)
>  {
> -	return cpu_socket_id(cpu_id);
> +	const unsigned ncpus = eal_get_ncpus();
> +	return (lcore_id < ncpus);
>  }