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IB/mlx4: Use boottime 

Wall time obtained from ktime_get_real_ns is susceptible to sudden jumps due to
user setting the time or due to NTP.  Boot time is constantly increasing time
better suited for comparing two timestamps.

Signed-off-by: Abhilash Jindal <klock.android@gmail.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Abhilash Jindal 2016-01-31 13:53:31 -05:00 committed by Doug Ledford
parent fc77dbd34c
commit 571e09eeff
1 changed files with 3 additions and 3 deletions
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6
drivers/infiniband/hw/mlx4/alias_GUID.c
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@ -310,7 +310,7 @@ static void aliasguid_query_handler(int status,
if (status) {
pr_debug("(port: %d) failed: status = %d\n",
cb_ctx->port, status);
rec->time_to_run = ktime_get_real_ns() + 1 * NSEC_PER_SEC;
rec->time_to_run = ktime_get_boot_ns() + 1 * NSEC_PER_SEC;
goto out;
}
@ -416,7 +416,7 @@ static void aliasguid_query_handler(int status,
be64_to_cpu((__force __be64)rec->guid_indexes),
be64_to_cpu((__force __be64)applied_guid_indexes),
be64_to_cpu((__force __be64)declined_guid_indexes));
rec->time_to_run = ktime_get_real_ns() +
rec->time_to_run = ktime_get_boot_ns() +
resched_delay_sec * NSEC_PER_SEC;
} else {
rec->status = MLX4_GUID_INFO_STATUS_SET;
@ -708,7 +708,7 @@ static int get_low_record_time_index(struct mlx4_ib_dev *dev, u8 port,
}
}
if (resched_delay_sec) {
u64 curr_time = ktime_get_real_ns();
u64 curr_time = ktime_get_boot_ns();
*resched_delay_sec = (low_record_time < curr_time) ? 0 :
div_u64((low_record_time - curr_time), NSEC_PER_SEC);