AcoSail/kernel_optimize_test
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ath9k: Get rid of unnecessary ATOMIC memory alloc during init time

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We can sleep for memory during init time and so allocating rx buffers,
descriptro buffers with GFP_KERNEL should help us to get rid of transient
alloc fails.

Signed-off-by: Senthil Balasubramanian <senthilkumar@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Senthil Balasubramanian 2009-03-06 11:24:08 +05:30 committed by John W. Linville
parent ec329acef9
commit f0e6ce13c1
2 changed files with 6 additions and 7 deletions
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5
drivers/net/wireless/ath9k/main.c
View File

@ -1804,7 +1804,7 @@ int ath_descdma_setup(struct ath_softc *sc, struct ath_descdma *dd,
/* allocate descriptors */
dd->dd_desc = dma_alloc_coherent(sc->dev, dd->dd_desc_len,
&dd->dd_desc_paddr, GFP_ATOMIC);
&dd->dd_desc_paddr, GFP_KERNEL);
if (dd->dd_desc == NULL) {
error = -ENOMEM;
goto fail;
@ -1816,12 +1816,11 @@ int ath_descdma_setup(struct ath_softc *sc, struct ath_descdma *dd,
/* allocate buffers */
bsize = sizeof(struct ath_buf) * nbuf;
bf = kmalloc(bsize, GFP_KERNEL);
bf = kzalloc(bsize, GFP_KERNEL);
if (bf == NULL) {
error = -ENOMEM;
goto fail2;
}
memset(bf, 0, bsize);
dd->dd_bufptr = bf;
INIT_LIST_HEAD(head);

8
drivers/net/wireless/ath9k/recv.c
View File

@ -100,7 +100,7 @@ static u64 ath_extend_tsf(struct ath_softc *sc, u32 rstamp)
return (tsf & ~0x7fff) | rstamp;
}
static struct sk_buff *ath_rxbuf_alloc(struct ath_softc *sc, u32 len)
static struct sk_buff *ath_rxbuf_alloc(struct ath_softc *sc, u32 len, gfp_t gfp_mask)
{
struct sk_buff *skb;
u32 off;
@ -118,7 +118,7 @@ static struct sk_buff *ath_rxbuf_alloc(struct ath_softc *sc, u32 len)
* Unfortunately this means we may get 8 KB here from the
* kernel... and that is actually what is observed on some
* systems :( */
skb = dev_alloc_skb(len + sc->cachelsz - 1);
skb = __dev_alloc_skb(len + sc->cachelsz - 1, gfp_mask);
if (skb != NULL) {
off = ((unsigned long) skb->data) % sc->cachelsz;
if (off != 0)
@ -306,7 +306,7 @@ int ath_rx_init(struct ath_softc *sc, int nbufs)
}
list_for_each_entry(bf, &sc->rx.rxbuf, list) {
skb = ath_rxbuf_alloc(sc, sc->rx.bufsize);
skb = ath_rxbuf_alloc(sc, sc->rx.bufsize, GFP_KERNEL);
if (skb == NULL) {
error = -ENOMEM;
break;
@ -580,7 +580,7 @@ int ath_rx_tasklet(struct ath_softc *sc, int flush)
/* Ensure we always have an skb to requeue once we are done
* processing the current buffer's skb */
requeue_skb = ath_rxbuf_alloc(sc, sc->rx.bufsize);
requeue_skb = ath_rxbuf_alloc(sc, sc->rx.bufsize, GFP_ATOMIC);
/* If there is no memory we ignore the current RX'd frame,
* tell hardware it can give us a new frame using the old