From 4361cb17f0df5491fe6e2c3ae1defc98e9a64a79 Mon Sep 17 00:00:00 2001
From: Patrick McHardy <kaber@trash.net>
Date: Fri, 16 Mar 2007 01:23:28 -0700
Subject: [PATCH] [NET_SCHED]: Export real timer resolution in /proc/net/psched
The timer resolution exported in /proc/net/psched is used by userspace to
calculate HTB's burst values. Currently it is set to HZ, since we're now
using hrtimers, use KTIME_MONOTONIC_RES, which makes HTB use smaller burst
values.
This patch also affects libnl, which incorrectly uses this value for
the SFQ perturbation parameter, which is always in seconds, and some
routing cache values, which are in USER_HZ, so both cases are broken
anyway.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
net/sched/sch_api.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index 6bc395cb235b..047ae62ff4fa 100644
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -1216,7 +1216,7 @@ static int psched_show(struct seq_file *seq, void *v)
{
seq_printf(seq, "%08x %08x %08x %08x\n",
(u32)NSEC_PER_USEC, (u32)PSCHED_US2NS(1),
- 1000000, HZ);
+ 1000000, (u32)NSEC_PER_SEC/ktime_to_ns(KTIME_MONOTONIC_RES));
return 0;
}
--
GitLab