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procinterrupts: check xen-dyn-event more flexible

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>
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liangxiao1 committed Oct 18, 2018
1 parent 864b689 commit 0ba1d8a59e209cef20955b8437989e730cd19cb3
Showing with 6 additions and 1 deletion.
  1. +6 −1 procinterrupts.c
@@ -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 {

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