Messages in this thread Patch in this message |  | | From | Enzo Matsumiya <> | Subject | [PATCH] nvme-pci: trigger disk activity LED | Date | Sun, 27 Feb 2022 20:42:58 -0300 |
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Users can enable an LED to indicate I/O activity on NVMe PCIe devices:
# echo "disk-activity" > /sys/class/leds/<led>/trigger
for the composite activity, or disk-{read,write} for individual activities/LEDs.
Signed-off-by: Enzo Matsumiya <ematsumiya@suse.de> --- drivers/nvme/host/pci.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c index 6a99ed680915..3e49d5980beb 100644 --- a/drivers/nvme/host/pci.c +++ b/drivers/nvme/host/pci.c @@ -15,6 +15,7 @@ #include <linux/init.h> #include <linux/interrupt.h> #include <linux/io.h> +#include <linux/leds.h> #include <linux/mm.h> #include <linux/module.h> #include <linux/mutex.h> @@ -1037,6 +1038,8 @@ static __always_inline void nvme_pci_unmap_rq(struct request *req) rq_integrity_vec(req)->bv_len, rq_data_dir(req)); if (blk_rq_nr_phys_segments(req)) nvme_unmap_data(dev, req); + + ledtrig_disk_activity(req_op(req) == REQ_OP_WRITE); } static void nvme_pci_complete_rq(struct request *req) -- 2.34.1
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