leds: Convert timers to use timer_setup()

2017-10-25T19:52:22+00:00

In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Cc: Richard Purdie Cc: Pavel Machek Cc: Willy Tarreau Cc: linux-leds@vger.kernel.org Signed-off-by: Kees Cook Signed-off-by: Jacek Anaszewski

leds: ledtrig-activity: Add a system activity LED trigger

2017-10-06T19:31:03+00:00

The "activity" trigger was inspired by the heartbeat one, but aims at providing instant indication of the immediate CPU usage. Under idle condition, it flashes 10ms every second. At 100% usage, it flashes 90ms every 100ms. The blinking frequency increases from 1 to 10 Hz until either the load is high enough to saturate one CPU core or 50% load is reached on a single-core system. Then past this point only the duty cycle increases from 10 to 90%. This results in a very visible activity reporting allowing one to immediately tell whether a machine is under load or not, making it quite suitable to be used in clusters. Signed-off-by: Willy Tarreau Signed-off-by: Jacek Anaszewski

kernel/linux.git/drivers/leds/trigger/ledtrig-activity.c, branch linux-4.16.y

leds: Convert timers to use timer_setup()

leds: ledtrig-activity: Add a system activity LED trigger