system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-07-21 10:41:44 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

net-sysfs: display two backlog queue len separately

Browse source 
Sometimes we need to know which one of backlog queue can be exactly
long enough to cause some latency when debugging this part is needed.
Thus, we can then separate the display of both.

Signed-off-by: Jason Xing <kernelxing@tencent.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Link: https://lore.kernel.org/r/20230321015746.96994-1-kerneljasonxing@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Jason Xing 2023-03-21 09:57:46 +08:00 committed by Paolo Abeni
parent 4d1f515517
commit 59da2d7b0e
1 changed files with 13 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

18
net/core/net-procfs.c
View file

@ -115,10 +115,14 @@ static int dev_seq_show(struct seq_file *seq, void *v)
return 0;
}
static u32 softnet_backlog_len(struct softnet_data *sd)
static u32 softnet_input_pkt_queue_len(struct softnet_data *sd)
{
return skb_queue_len_lockless(&sd->input_pkt_queue) +
skb_queue_len_lockless(&sd->process_queue);
return skb_queue_len_lockless(&sd->input_pkt_queue);
}
static u32 softnet_process_queue_len(struct softnet_data *sd)
{
return skb_queue_len_lockless(&sd->process_queue);
}
static struct softnet_data *softnet_get_online(loff_t *pos)
@ -152,6 +156,8 @@ static void softnet_seq_stop(struct seq_file *seq, void *v)
static int softnet_seq_show(struct seq_file *seq, void *v)
{
struct softnet_data *sd = v;
u32 input_qlen = softnet_input_pkt_queue_len(sd);
u32 process_qlen = softnet_process_queue_len(sd);
unsigned int flow_limit_count = 0;
#ifdef CONFIG_NET_FLOW_LIMIT
@ -169,12 +175,14 @@ static int softnet_seq_show(struct seq_file *seq, void *v)
* mapping the data a specific CPU
*/
seq_printf(seq,
"%08x %08x %08x %08x %08x %08x %08x %08x %08x %08x %08x %08x %08x\n",
"%08x %08x %08x %08x %08x %08x %08x %08x %08x %08x %08x %08x %08x "
"%08x %08x\n",
sd->processed, sd->dropped, sd->time_squeeze, 0,
0, 0, 0, 0, /* was fastroute */
0, /* was cpu_collision */
sd->received_rps, flow_limit_count,
softnet_backlog_len(sd), (int)seq->index);
input_qlen + process_qlen, (int)seq->index,
input_qlen, process_qlen);
return 0;
}