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authorSagi Grimberg <sagi@grimberg.me>2018-11-02 20:28:15 +0300
committerJens Axboe <axboe@kernel.dk>2018-12-08 08:26:55 +0300
commit6e3ca03ee934572d5de4fb2224c01e12c4d422c8 (patch)
treeb6e8dc7fa480aefbd87f68712e651e3cda747078 /include/linux/nvme.h
parent3e53ba38a9404434a8b57683825279f4305b5a76 (diff)
downloadlinux-6e3ca03ee934572d5de4fb2224c01e12c4d422c8.tar.xz
nvme: support traffic based keep-alive
If the controller supports traffic based keep alive, we restart the keep alive timer if any admin or io commands was completed during the kato period. This prevents a possible starvation of keep alive commands in the presence of heavy traffic as in such case, we already have a health indication from the host perspective. Only set a comp_seen indicator in case the controller supports keep alive to minimize the overhead for pci controllers. Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/nvme.h')
-rw-r--r--include/linux/nvme.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/nvme.h b/include/linux/nvme.h
index 753c83a5c01f..429c4cf90899 100644
--- a/include/linux/nvme.h
+++ b/include/linux/nvme.h
@@ -200,6 +200,7 @@ enum {
enum nvme_ctrl_attr {
NVME_CTRL_ATTR_HID_128_BIT = (1 << 0),
+ NVME_CTRL_ATTR_TBKAS = (1 << 6),
};
struct nvme_id_ctrl {