[dpdk-dev] [PATCH v4 7/7] eal/alarm: introduce alarm fini routine

[Dmitry Kozlyuk]

2021-10-20 00:05 (UTC+0530), Harman Kalra:
> Implementing alarm cleanup routine, where the memory allocated
> for interrupt instance can be freed.
> 
> Signed-off-by: Harman Kalra <hkalra at marvell.com>
> ---
>  lib/eal/common/eal_private.h | 11 +++++++++++
>  lib/eal/freebsd/eal.c        |  1 +
>  lib/eal/freebsd/eal_alarm.c  |  7 +++++++
>  lib/eal/linux/eal.c          |  1 +
>  lib/eal/linux/eal_alarm.c    | 10 +++++++++-
>  5 files changed, 29 insertions(+), 1 deletion(-)
> 
> diff --git a/lib/eal/common/eal_private.h b/lib/eal/common/eal_private.h
> index 86dab1f057..7fb9bc1324 100644
> --- a/lib/eal/common/eal_private.h
> +++ b/lib/eal/common/eal_private.h
> @@ -163,6 +163,17 @@ int rte_eal_intr_init(void);
>   */
>  int rte_eal_alarm_init(void);
>  
> +/**
> + * Init alarm mechanism. This is to allow a callback be called after
> + * specific time.
> + *
> + * This function is private to EAL.
> + *
> + * @return
> + *  0 on success, negative on error
> + */

The comment does not match the function.

> +void rte_eal_alarm_fini(void);
> +
>  /**
>   * Function is to check if the kernel module(like, vfio, vfio_iommu_type1,
>   * etc.) loaded.
[...]
> diff --git a/lib/eal/freebsd/eal_alarm.c b/lib/eal/freebsd/eal_alarm.c
> index cd971036cd..167384e79a 100644
> --- a/lib/eal/freebsd/eal_alarm.c
> +++ b/lib/eal/freebsd/eal_alarm.c
> @@ -46,6 +46,13 @@ static rte_spinlock_t alarm_list_lk = RTE_SPINLOCK_INITIALIZER;
>  static struct rte_intr_handle *intr_handle;
>  static void eal_alarm_callback(void *arg);
>  
> +void
> +rte_eal_alarm_fini(void)
> +{
> +	if (intr_handle)

intr_handle != NULL

> +		rte_intr_instance_free(intr_handle);
> +}
> +
>  int
>  rte_eal_alarm_init(void)
>  {
[...]
> diff --git a/lib/eal/linux/eal_alarm.c b/lib/eal/linux/eal_alarm.c
> index cf8e2f2066..56f69d8e6d 100644
> --- a/lib/eal/linux/eal_alarm.c
> +++ b/lib/eal/linux/eal_alarm.c
> @@ -58,6 +58,13 @@ static struct rte_intr_handle *intr_handle;
>  static int handler_registered = 0;
>  static void eal_alarm_callback(void *arg);
>  
> +void
> +rte_eal_alarm_fini(void)
> +{
> +	if (intr_handle)

Ditto.

> +		rte_intr_instance_free(intr_handle);
> +}
> +
>  int
>  rte_eal_alarm_init(void)
>  {
> @@ -68,7 +75,8 @@ rte_eal_alarm_init(void)
>  		goto error;
>  	}
>  
> -	rte_intr_type_set(intr_handle, RTE_INTR_HANDLE_ALARM);
> +	if (rte_intr_type_set(intr_handle, RTE_INTR_HANDLE_ALARM))
> +		goto error;
>  
>  	/* create a timerfd file descriptor */
>  	if (rte_intr_fd_set(intr_handle,

This belongs to a patch 5/7, doesn't it?