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. * v4 - Squash patch 'add interface to stop and restart polling disk stats' into the ledtrig-blk introduction patch - Rename 'led' to 'led_trig' in struct ledtrig_blk * v3 - Avoid the name collision with LED_OFF and LED_ON - Add ABI documentation - Add more detail to Kconfig help text * 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 (5): block: umem: rename LED_* macros to MEMCTRL_LED_* scsi: mvsas: rename LED_* enums to SGPIO_LED_* scsi: nsp32: rename LED_* macros to EXT_PORT_LED_* block: introduce LED block device activity trigger scsi: sd: stop polling disk stats by ledtrig-blk during runtime suspend .../ABI/testing/sysfs-class-led-trigger-blk | 37 +++ block/genhd.c | 2 + drivers/block/umem.c | 20 +- drivers/block/umem.h | 20 +- drivers/leds/trigger/Kconfig | 9 + drivers/leds/trigger/Makefile | 1 + drivers/leds/trigger/ledtrig-blk.c | 259 +++++++++++++++++++++ drivers/scsi/mvsas/mv_94xx.c | 2 +- drivers/scsi/mvsas/mv_94xx.h | 24 +- drivers/scsi/nsp32.c | 7 +- drivers/scsi/nsp32.h | 4 +- drivers/scsi/sd.c | 40 ++-- include/linux/genhd.h | 3 + include/linux/leds.h | 38 +++ 14 files changed, 411 insertions(+), 55 deletions(-) create mode 100644 Documentation/ABI/testing/sysfs-class-led-trigger-blk 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> Cc: GOTO Masanori <gotom@xxxxxxxxxxxx> Cc: YOKOTA Hiroshi <yokota@xxxxxxxxxxxxxxxxxxxxxxx> Cc: Hannes Reinecke <hare@xxxxxxxx> -- 2.7.4
