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Merge "msm: ipa: use lower order pages"

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This commit is contained in:
qctecmdr 2022-01-10 23:14:14 -08:00 • committed by Gerrit - the friendly Code Review server
commit a17d83f9bb
3 changed files with 44 additions and 15 deletions
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6
drivers/platform/msm/ipa/ipa_v3/ipa_debugfs.c
View file

@ -1357,7 +1357,8 @@ static ssize_t ipa3_read_stats(struct file *file, char __user *ubuf,
"lan_repl_rx_empty=%u\n"
"flow_enable=%u\n"
"flow_disable=%u\n"
"rx_page_drop_cnt=%u\n",
"rx_page_drop_cnt=%u\n"
"lower_order=%u\n",
ipa3_ctx->stats.tx_sw_pkts,
ipa3_ctx->stats.tx_hw_pkts,
ipa3_ctx->stats.tx_non_linear,
@ -1374,7 +1375,8 @@ static ssize_t ipa3_read_stats(struct file *file, char __user *ubuf,
ipa3_ctx->stats.lan_repl_rx_empty,
ipa3_ctx->stats.flow_enable,
ipa3_ctx->stats.flow_disable,
ipa3_ctx->stats.rx_page_drop_cnt
ipa3_ctx->stats.rx_page_drop_cnt,
ipa3_ctx->stats.lower_order
);
cnt += nbytes;

50
drivers/platform/msm/ipa/ipa_v3/ipa_dp.c
View file

@ -2042,6 +2042,27 @@ fail_kmem_cache_alloc:
}
}
static struct page *ipa3_alloc_page(
gfp_t flag, u32 *page_order, bool try_lower)
{
struct page *page = NULL;
u32 p_order = *page_order;
page = __dev_alloc_pages(flag, p_order);
/* We will only try 1 page order lower. */
if (unlikely(!page)) {
if (try_lower && p_order > 0) {
p_order = p_order - 1;
page = __dev_alloc_pages(flag, p_order);
if (likely(page))
ipa3_ctx->stats.lower_order++;
}
}
*page_order = p_order;
return page;
}
static struct ipa3_rx_pkt_wrapper *ipa3_alloc_rx_pkt_page(
gfp_t flag, bool is_tmp_alloc)
{
@ -2052,12 +2073,18 @@ static struct ipa3_rx_pkt_wrapper *ipa3_alloc_rx_pkt_page(
flag);
if (unlikely(!rx_pkt))
return NULL;
rx_pkt->len = PAGE_SIZE << IPA_WAN_PAGE_ORDER;
rx_pkt->page_data.page = __dev_alloc_pages(flag,
IPA_WAN_PAGE_ORDER);
rx_pkt->page_data.page_order = IPA_WAN_PAGE_ORDER;
/* Try a lower order page for order 3 pages in case allocation fails. */
rx_pkt->page_data.page = ipa3_alloc_page(flag,
&rx_pkt->page_data.page_order,
(is_tmp_alloc && rx_pkt->page_data.page_order == 3));
if (unlikely(!rx_pkt->page_data.page))
goto fail_page_alloc;
rx_pkt->len = PAGE_SIZE << rx_pkt->page_data.page_order;
rx_pkt->page_data.dma_addr = dma_map_page(ipa3_ctx->pdev,
rx_pkt->page_data.page, 0,
rx_pkt->len, DMA_FROM_DEVICE);
@ -2075,7 +2102,7 @@ static struct ipa3_rx_pkt_wrapper *ipa3_alloc_rx_pkt_page(
return rx_pkt;
fail_dma_mapping:
__free_pages(rx_pkt->page_data.page, IPA_WAN_PAGE_ORDER);
__free_pages(rx_pkt->page_data.page, rx_pkt->page_data.page_order);
fail_page_alloc:
kmem_cache_free(ipa3_ctx->rx_pkt_wrapper_cache, rx_pkt);
return NULL;
@ -2769,8 +2796,7 @@ static void free_rx_page(void *chan_user_data, void *xfer_user_data)
}
dma_unmap_page(ipa3_ctx->pdev, rx_pkt->page_data.dma_addr,
rx_pkt->len, DMA_FROM_DEVICE);
__free_pages(rx_pkt->page_data.page,
IPA_WAN_PAGE_ORDER);
__free_pages(rx_pkt->page_data.page, rx_pkt->page_data.page_order);
kmem_cache_free(ipa3_ctx->rx_pkt_wrapper_cache, rx_pkt);
}
@ -2821,8 +2847,7 @@ static void ipa3_cleanup_rx(struct ipa3_sys_context *sys)
rx_pkt->page_data.dma_addr,
rx_pkt->len,
DMA_FROM_DEVICE);
__free_pages(rx_pkt->page_data.page,
IPA_WAN_PAGE_ORDER);
__free_pages(rx_pkt->page_data.page, rx_pkt->page_data.page_order);
}
kmem_cache_free(ipa3_ctx->rx_pkt_wrapper_cache,
rx_pkt);
@ -2842,7 +2867,7 @@ static void ipa3_cleanup_rx(struct ipa3_sys_context *sys)
rx_pkt->len,
DMA_FROM_DEVICE);
__free_pages(rx_pkt->page_data.page,
IPA_WAN_PAGE_ORDER);
rx_pkt->page_data.page_order);
kmem_cache_free(
ipa3_ctx->rx_pkt_wrapper_cache,
rx_pkt);
@ -3642,8 +3667,7 @@ static struct sk_buff *handle_page_completion(struct gsi_chan_xfer_notify
} else {
dma_unmap_page(ipa3_ctx->pdev, rx_page.dma_addr,
rx_pkt->len, DMA_FROM_DEVICE);
__free_pages(rx_pkt->page_data.page,
IPA_WAN_PAGE_ORDER);
__free_pages(rx_pkt->page_data.page, rx_pkt->page_data.page_order);
}
rx_pkt->sys->free_rx_wrapper(rx_pkt);
IPA_STATS_INC_CNT(ipa3_ctx->stats.rx_page_drop_cnt);
@ -3671,7 +3695,7 @@ static struct sk_buff *handle_page_completion(struct gsi_chan_xfer_notify
dma_unmap_page(ipa3_ctx->pdev, rx_page.dma_addr,
rx_pkt->len, DMA_FROM_DEVICE);
__free_pages(rx_pkt->page_data.page,
IPA_WAN_PAGE_ORDER);
rx_pkt->page_data.page_order);
}
rx_pkt->sys->free_rx_wrapper(rx_pkt);
}
@ -3696,7 +3720,7 @@ static struct sk_buff *handle_page_completion(struct gsi_chan_xfer_notify
skb_shinfo(rx_skb)->nr_frags,
rx_page.page, 0,
size,
PAGE_SIZE << IPA_WAN_PAGE_ORDER);
PAGE_SIZE << rx_page.page_order);
}
} else {
return NULL;

3
drivers/platform/msm/ipa/ipa_v3/ipa_i.h
View file

@ -506,11 +506,13 @@ enum ipa3_wdi_polling_mode {
* @page: skb page
* @dma_addr: DMA address of this Rx packet
* @is_tmp_alloc: skb page from tmp_alloc or recycle_list
* @page_order: page order associated with the page.
*/
struct ipa_rx_page_data {
struct page *page;
dma_addr_t dma_addr;
bool is_tmp_alloc;
u32 page_order;
};
struct ipa3_active_client_htable_entry {
@ -1446,6 +1448,7 @@ struct ipa3_stats {
u32 tx_non_linear;
u32 rx_page_drop_cnt;
struct ipa3_page_recycle_stats page_recycle_stats[2];
u64 lower_order;
};
/* offset for each stats */