[dpdk-dev] [PATCH v4 12/17] eal: set _lcore_id and _socket_id to (-1) by default

[Olivier MATZ]

Hi,

On 02/02/2015 03:02 AM, Cunming Liang wrote:
> For those none EAL thread, *_lcore_id* shall always be LCORE_ID_ANY.
> The libraries using *_lcore_id* as index need to take care.
> *_socket_id* always be SOCKET_ID_ANY unitl the thread changes the affinity

unitl -> until

> by rte_thread_set_affinity()
> 
> Signed-off-by: Cunming Liang <cunming.liang at intel.com>
> ---
>  lib/librte_eal/bsdapp/eal/eal_thread.c   | 4 ++--
>  lib/librte_eal/linuxapp/eal/eal_thread.c | 4 ++--
>  2 files changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/lib/librte_eal/bsdapp/eal/eal_thread.c b/lib/librte_eal/bsdapp/eal/eal_thread.c
> index 5b16302..2b3c9a8 100644
> --- a/lib/librte_eal/bsdapp/eal/eal_thread.c
> +++ b/lib/librte_eal/bsdapp/eal/eal_thread.c
> @@ -56,8 +56,8 @@
>  #include "eal_private.h"
>  #include "eal_thread.h"
>  
> -RTE_DEFINE_PER_LCORE(unsigned, _lcore_id);
> -RTE_DEFINE_PER_LCORE(unsigned, _socket_id);
> +RTE_DEFINE_PER_LCORE(unsigned, _lcore_id) = (unsigned)LCORE_ID_ANY;
> +RTE_DEFINE_PER_LCORE(unsigned, _socket_id) = (unsigned)SOCKET_ID_ANY;
>  RTE_DEFINE_PER_LCORE(rte_cpuset_t, _cpuset);
>  
>  /*
> diff --git a/lib/librte_eal/linuxapp/eal/eal_thread.c b/lib/librte_eal/linuxapp/eal/eal_thread.c
> index 6eb1525..ab94e20 100644
> --- a/lib/librte_eal/linuxapp/eal/eal_thread.c
> +++ b/lib/librte_eal/linuxapp/eal/eal_thread.c
> @@ -57,8 +57,8 @@
>  #include "eal_private.h"
>  #include "eal_thread.h"
>  
> -RTE_DEFINE_PER_LCORE(unsigned, _lcore_id);
> -RTE_DEFINE_PER_LCORE(unsigned, _socket_id);
> +RTE_DEFINE_PER_LCORE(unsigned, _lcore_id) = (unsigned)LCORE_ID_ANY;
> +RTE_DEFINE_PER_LCORE(unsigned, _socket_id) = (unsigned)SOCKET_ID_ANY;
>  RTE_DEFINE_PER_LCORE(rte_cpuset_t, _cpuset);

As far as I understand, now a rte_lcore_id() can return LCORE_ID_ANY.
This should be modified in the rte_lcore_id() API comments.

Same for rte_socket_id().

I also wonder if the API of these functions should be modified to
return an int instead of an unsigned as LCORE_ID_ANY is -1.

Regards,
Olivier