PeterCxy/irqbalance
1
0
Fork 0
Code Issues Pull requests Projects Releases Wiki Activity

procinterrupts: check xen-dyn-event more flexible

Browse source 
In current /proc/interrupts, the 'xen-dyn-event' was split to 'xen-dyn    -event'.
It causes interrupts not balanced inside xen guest.

Below result is without this patch:
 70:         29          0          0          0   xen-dyn    -event     vif0-q0-tx
 71:        120          0          0          0   xen-dyn    -event     vif0-q0-rx
 72:     586350          0          0          0   xen-dyn    -event     vif0-q1-tx
 73:         44          0          0          0   xen-dyn    -event     vif0-q1-rx
 74:         19          0          0          0   xen-dyn    -event     vif0-q2-tx
 75:        179          0          0          0   xen-dyn    -event     vif0-q2-rx
 76:         67          0          0          0   xen-dyn    -event     vif0-q3-tx
 77:     299637          0          0          0   xen-dyn    -event     vif0-q3-rx

Below result is with this patch:
[root@dhcp-3-194 ~]# grep vif0 /proc/interrupts
 70:         30          0          0          0   xen-dyn    -event     vif0-q0-tx
 71:        305          0         11          0   xen-dyn    -event     vif0-q0-rx
 72:     586354          0         27          0   xen-dyn    -event     vif0-q1-tx
 73:         49          7          5          0   xen-dyn    -event     vif0-q1-rx
 74:         27          0          0     509373   xen-dyn    -event     vif0-q2-tx
 75:        420          0          5          0   xen-dyn    -event     vif0-q2-rx
 76:        179          0         38          0   xen-dyn    -event     vif0-q3-tx
 77:     299803     281433          0          0   xen-dyn    -event     vif0-q3-rx

Signed-off-by: Xiao Liang <xiliang@redhat.com>
This commit is contained in:
Xiao Liang 2018-10-18 21:50:33 +08:00
parent 864b689fb2
commit 0ba1d8a59e
1 changed files with 6 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
procinterrupts.c
View file

@ -168,6 +168,7 @@ GList* collect_full_irq_list()
while (!feof(file)) {
int number;
int is_xen_dyn = 0;
struct irq_info *info;
char *c;
char *savedline = NULL;
@ -188,9 +189,13 @@ GList* collect_full_irq_list()
savedline = strdup(line);
irq_name = strtok_r(savedline, " ", &savedptr);
if (strstr(irq_name, "xen-dyn") != NULL)
is_xen_dyn = 1;
last_token = strtok_r(NULL, " ", &savedptr);
while ((p = strtok_r(NULL, " ", &savedptr))) {
irq_name = last_token;
if (strstr(irq_name, "xen-dyn") != NULL)
is_xen_dyn = 1;
last_token = p;
}
@ -210,7 +215,7 @@ GList* collect_full_irq_list()
info = calloc(sizeof(struct irq_info), 1);
if (info) {
info->irq = number;
if (strstr(irq_name, "xen-dyn-event") != NULL) {
if (strstr(irq_name, "-event") != NULL && is_xen_dyn == 1) {
info->type = IRQ_TYPE_VIRT_EVENT;
info->class = IRQ_VIRT_EVENT;
} else {