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eth: nfp: Remove u64_stats_update_begin()/end() for stats fetch

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This place is fetching the stats, u64_stats_update_begin()/end()
should not be used, and the fetcher of stats is in the same
context as the updater of the stats, so don't need any protection

Signed-off-by: Li RongQing <lirongqing@baidu.com>
Link: https://patch.msgid.link/20250815015619.2713-1-lirongqing@baidu.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Li RongQing 2025-08-15 09:56:19 +08:00 committed by Jakub Kicinski
parent 661bfb4699
commit 1fb39d4c23
2 changed files with 8 additions and 24 deletions
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16
drivers/net/ethernet/netronome/nfp/nfd3/dp.c
View File

@ -1169,14 +1169,10 @@ int nfp_nfd3_poll(struct napi_struct *napi, int budget)
if (r_vec->nfp_net->rx_coalesce_adapt_on && r_vec->rx_ring) {
struct dim_sample dim_sample = {};
unsigned int start;
u64 pkts, bytes;
do {
start = u64_stats_fetch_begin(&r_vec->rx_sync);
pkts = r_vec->rx_pkts;
bytes = r_vec->rx_bytes;
} while (u64_stats_fetch_retry(&r_vec->rx_sync, start));
pkts = r_vec->rx_pkts;
bytes = r_vec->rx_bytes;
dim_update_sample(r_vec->event_ctr, pkts, bytes, &dim_sample);
net_dim(&r_vec->rx_dim, &dim_sample);
@ -1184,14 +1180,10 @@ int nfp_nfd3_poll(struct napi_struct *napi, int budget)
if (r_vec->nfp_net->tx_coalesce_adapt_on && r_vec->tx_ring) {
struct dim_sample dim_sample = {};
unsigned int start;
u64 pkts, bytes;
do {
start = u64_stats_fetch_begin(&r_vec->tx_sync);
pkts = r_vec->tx_pkts;
bytes = r_vec->tx_bytes;
} while (u64_stats_fetch_retry(&r_vec->tx_sync, start));
pkts = r_vec->tx_pkts;
bytes = r_vec->tx_bytes;
dim_update_sample(r_vec->event_ctr, pkts, bytes, &dim_sample);
net_dim(&r_vec->tx_dim, &dim_sample);

16
drivers/net/ethernet/netronome/nfp/nfdk/dp.c
View File

@ -1279,14 +1279,10 @@ int nfp_nfdk_poll(struct napi_struct *napi, int budget)
if (r_vec->nfp_net->rx_coalesce_adapt_on && r_vec->rx_ring) {
struct dim_sample dim_sample = {};
unsigned int start;
u64 pkts, bytes;
do {
start = u64_stats_fetch_begin(&r_vec->rx_sync);
pkts = r_vec->rx_pkts;
bytes = r_vec->rx_bytes;
} while (u64_stats_fetch_retry(&r_vec->rx_sync, start));
pkts = r_vec->rx_pkts;
bytes = r_vec->rx_bytes;
dim_update_sample(r_vec->event_ctr, pkts, bytes, &dim_sample);
net_dim(&r_vec->rx_dim, &dim_sample);
@ -1294,14 +1290,10 @@ int nfp_nfdk_poll(struct napi_struct *napi, int budget)
if (r_vec->nfp_net->tx_coalesce_adapt_on && r_vec->tx_ring) {
struct dim_sample dim_sample = {};
unsigned int start;
u64 pkts, bytes;
do {
start = u64_stats_fetch_begin(&r_vec->tx_sync);
pkts = r_vec->tx_pkts;
bytes = r_vec->tx_bytes;
} while (u64_stats_fetch_retry(&r_vec->tx_sync, start));
pkts = r_vec->tx_pkts;
bytes = r_vec->tx_bytes;
dim_update_sample(r_vec->event_ctr, pkts, bytes, &dim_sample);
net_dim(&r_vec->tx_dim, &dim_sample);