[dpdk-dev] [PATCH] net/mlx5: use open/read/close for reading ib stat

[Alexander Kozyrev]

> -----Original Message-----
> From: Mohsin Shaikh <mohsinshaikh at niometrics.com>
> Sent: Thursday, April 9, 2020 16:37
> To: dev at dpdk.org
> Cc: stable at dpdk.org; Alexander Kozyrev <akozyrev at mellanox.com>; Mohsin
> Shaikh <mohsinshaikh at niometrics.com>
> Subject: [PATCH] net/mlx5: use open/read/close for reading ib stat
> 
> fgets(3)/fread(3)/fscanf(3) etc. use mmap(2)/munmap(2) which leads to TLB
> shootdown interrupts to all dpdk app cores including RX cores.
> This can cause packet drops. Use read(2)/write(2) instead.
> 
> Bugzilla ID: 440
> Cc: stable at dpdk.org
> 
> Signed-off-by: Mohsin Shaikh <mohsinshaikh at niometrics.com>
> ---

Reviewed-by: Alexander Kozyrev <akozyrev at mellanox.com>