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net/tap: Allocating Large sized arrays to heap 

net_init_tap has a huge stack usage of 8192 bytes approx.
Moving large arrays to heap to reduce stack usage.

Signed-off-by: Zhou Jie <zhoujie2011@cn.fujitsu.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
Zhou Jie 2016-04-26 09:26:01 +08:00 committed by Jason Wang
parent 287db79df8
commit 11196e95f0
1 changed files with 4 additions and 2 deletions
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6
net/tap.c
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@ -769,8 +769,8 @@ int net_init_tap(const NetClientOptions *opts, const char *name,
return -1;
}
} else if (tap->has_fds) {
char *fds[MAX_TAP_QUEUES];
char *vhost_fds[MAX_TAP_QUEUES];
char **fds = g_new(char *, MAX_TAP_QUEUES);
char **vhost_fds = g_new(char *, MAX_TAP_QUEUES);
int nfds, nvhosts;
if (tap->has_ifname || tap->has_script || tap->has_downscript ||
@ -818,6 +818,8 @@ int net_init_tap(const NetClientOptions *opts, const char *name,
return -1;
}
}
g_free(fds);
g_free(vhost_fds);
} else if (tap->has_helper) {
if (tap->has_ifname || tap->has_script || tap->has_downscript ||
tap->has_vnet_hdr || tap->has_queues || tap->has_vhostfds) {