From f2933ef5e44c2143629b3310e4eaa862e7b95c22 Mon Sep 17 00:00:00 2001 From: Aya Levin Date: Sun, 10 Nov 2019 14:11:56 +0200 Subject: [PATCH] devlink: Add method for time-stamp on reporter's dump BugLink: https://bugs.launchpad.net/bugs/1853475 [ Upstream commit d279505b723cba058b604ed8cf9cd4c854e2a041 ] When setting the dump's time-stamp, use ktime_get_real in addition to jiffies. This simplifies the user space implementation and bypasses some inconsistent behavior with translating jiffies to current time. The time taken is transformed into nsec, to comply with y2038 issue. Fixes: c8e1da0bf923 ("devlink: Add health report functionality") Signed-off-by: Aya Levin Acked-by: Jiri Pirko Acked-by: Arnd Bergmann Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman Signed-off-by: Connor Kuehl Signed-off-by: Stefan Bader --- include/uapi/linux/devlink.h | 1 + net/core/devlink.c | 6 ++++++ 2 files changed, 7 insertions(+) diff --git a/include/uapi/linux/devlink.h b/include/uapi/linux/devlink.h index ffc993256527..f0953046bc17 100644 --- a/include/uapi/linux/devlink.h +++ b/include/uapi/linux/devlink.h @@ -348,6 +348,7 @@ enum devlink_attr { DEVLINK_ATTR_PORT_PCI_PF_NUMBER, /* u16 */ DEVLINK_ATTR_PORT_PCI_VF_NUMBER, /* u16 */ + DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS_NS, /* u64 */ /* add new attributes above here, update the policy in devlink.c */ __DEVLINK_ATTR_MAX, diff --git a/net/core/devlink.c b/net/core/devlink.c index f5994f2a6457..d40f6cc48690 100644 --- a/net/core/devlink.c +++ b/net/core/devlink.c @@ -4577,6 +4577,7 @@ struct devlink_health_reporter { bool auto_recover; u8 health_state; u64 dump_ts; + u64 dump_real_ts; u64 error_count; u64 recovery_count; u64 last_recovery_ts; @@ -4749,6 +4750,7 @@ static int devlink_health_do_dump(struct devlink_health_reporter *reporter, goto dump_err; reporter->dump_ts = jiffies; + reporter->dump_real_ts = ktime_get_real_ns(); return 0; @@ -4911,6 +4913,10 @@ devlink_nl_health_reporter_fill(struct sk_buff *msg, jiffies_to_msecs(reporter->dump_ts), DEVLINK_ATTR_PAD)) goto reporter_nest_cancel; + if (reporter->dump_fmsg && + nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS_NS, + reporter->dump_real_ts, DEVLINK_ATTR_PAD)) + goto reporter_nest_cancel; nla_nest_end(msg, reporter_attr); genlmsg_end(msg, hdr); -- 2.39.5