pings (reference) in projects: linux-4.1.27

60 		This pings the card to tell it not to reset your computer.

664 	this_cpu_inc(uv_cpu_nmi.pings);  in uv_handle_nmi_ping()

200  (*) SO_KEEPALIVE automatically pings the other side to keep the connection

/linux-4.1.27/Documentation/watchdog/
D	pcwd-watchdog.txt	`60 This pings the card to tell it not to reset your computer.`
/linux-4.1.27/arch/x86/include/asm/uv/
D	uv_hub.h	`607 int pings; member`
/linux-4.1.27/arch/x86/platform/uv/
D	uv_nmi.c	`664 this_cpu_inc(uv_cpu_nmi.pings); in uv_handle_nmi_ping()`
/linux-4.1.27/Documentation/networking/
D	rds.txt	`345 respond to pings`
D	rxrpc.txt	`200 (*) SO_KEEPALIVE automatically pings the other side to keep the connection`
/linux-4.1.27/Documentation/virtual/uml/
D	UserModeLinux-HOWTO.txt	`974 only acting as a gateway. It will respond to pings sent to it`