This work is inspired by the report on linux-nvme mailing list. disk-activity trigger not working for nvme disk: http://lists.infradead.org/pipermail/linux-nvme/2019-July/025253.html This LED block device activity trigger works with any block devices. * v2 - Remove "move declaration of led_stop_software_blink() to linux/leds.h" patch - Move the trigger implementation to drivers/leds/trigger - s/blk_ledtrig/ledtrig_blk/ - Add CONFIG_LEDS_TRIGGER_BLOCK - Fix wrong bitops usages - Add interface to stop and restart polling disk stats - Stop polling disk stats for scsi disk during runtime suspend Akinobu Mita (3): block: introduce LED block device activity trigger ledtrig-blk: add interface to stop and restart polling disk stats scsi: sd: stop polling disk stats by ledtrig-blk during runtime suspend block/genhd.c | 2 + drivers/leds/trigger/Kconfig | 7 + drivers/leds/trigger/Makefile | 1 + drivers/leds/trigger/ledtrig-blk.c | 258 +++++++++++++++++++++++++++++++++++++ drivers/scsi/sd.c | 40 +++--- include/linux/genhd.h | 3 + include/linux/leds.h | 38 ++++++ 7 files changed, 332 insertions(+), 17 deletions(-) create mode 100644 drivers/leds/trigger/ledtrig-blk.c Cc: Frank Steiner <fsteiner-mail1@xxxxxxxxxxxxxx> Cc: Jacek Anaszewski <jacek.anaszewski@xxxxxxxxx> Cc: Pavel Machek <pavel@xxxxxx> Cc: Dan Murphy <dmurphy@xxxxxx> Cc: Jens Axboe <axboe@xxxxxxxxx> Cc: "James E.J. Bottomley" <jejb@xxxxxxxxxxxxx> Cc: "Martin K. Petersen" <martin.petersen@xxxxxxxxxx> -- 2.7.4
