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| author | Eric Dumazet <eric.dumazet@gmail.com> | 2009-11-29 00:44:33 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-11-29 01:17:39 -0800 |
| commit | 3291b9db567e1ec38362024049cbd02987b1e277 (patch) | |
| tree | 8de6878abfed5a16974747c54c4e1420327b86ab | |
| parent | 9b963e5d0e01461099a40117b05480f24b63381f (diff) | |
| download | linux-stable-3291b9db567e1ec38362024049cbd02987b1e277.tar.gz linux-stable-3291b9db567e1ec38362024049cbd02987b1e277.tar.bz2 linux-stable-3291b9db567e1ec38362024049cbd02987b1e277.zip | |
pktgen: NUMA aware
pktgen threads are bound to given CPU, we can allocate memory for
these threads in a NUMA aware way.
After a pktgen session on two threads, we can check flows memory was
allocated on right node, instead of a not related one.
# grep pktgen_thread_write /proc/vmallocinfo
0xffffc90007204000-0xffffc90007385000 1576960 pktgen_thread_write+0x3a4/0x6b0 [pktgen] pages=384 vmalloc N0=384
0xffffc90007386000-0xffffc90007507000 1576960 pktgen_thread_write+0x3a4/0x6b0 [pktgen] pages=384 vmalloc N1=384
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/core/pktgen.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/net/core/pktgen.c b/net/core/pktgen.c index b44104d3e6be..19ee493ec178 100644 --- a/net/core/pktgen.c +++ b/net/core/pktgen.c @@ -3626,6 +3626,7 @@ static int pktgen_add_device(struct pktgen_thread *t, const char *ifname) { struct pktgen_dev *pkt_dev; int err; + int node = cpu_to_node(t->cpu); /* We don't allow a device to be on several threads */ @@ -3635,12 +3636,13 @@ static int pktgen_add_device(struct pktgen_thread *t, const char *ifname) return -EBUSY; } - pkt_dev = kzalloc(sizeof(struct pktgen_dev), GFP_KERNEL); + pkt_dev = kzalloc_node(sizeof(struct pktgen_dev), GFP_KERNEL, node); if (!pkt_dev) return -ENOMEM; strcpy(pkt_dev->odevname, ifname); - pkt_dev->flows = vmalloc(MAX_CFLOWS * sizeof(struct flow_state)); + pkt_dev->flows = vmalloc_node(MAX_CFLOWS * sizeof(struct flow_state), + node); if (pkt_dev->flows == NULL) { kfree(pkt_dev); return -ENOMEM; @@ -3702,7 +3704,8 @@ static int __init pktgen_create_thread(int cpu) struct proc_dir_entry *pe; struct task_struct *p; - t = kzalloc(sizeof(struct pktgen_thread), GFP_KERNEL); + t = kzalloc_node(sizeof(struct pktgen_thread), GFP_KERNEL, + cpu_to_node(cpu)); if (!t) { printk(KERN_ERR "pktgen: ERROR: out of memory, can't " "create new thread.\n"); |