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Date: Thu, 10 May 2007 04:18:54 -0400 (EDT)
From: Sreenivasa Honnur <Sreenivasa.Honnur@...erion.com>
To: netdev@...r.kernel.org, jeff@...zik.org
cc: Leonid.Grossman@...erion.com, ramkrishna.vep@...erion.com,
santosh.rastapur@...erion.com, Sivakumar.Subramani@...erion.com,
Alicia.Pena@...erion.com
Subject: [PATCH 2.6.21 2/3]S2IO: statistics for memory allocation failuers
1. Added code to count the number of memory failures.
2. Added watchdog_timer counter.
3. Changed debug level for some DBG_PRINTS.
Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@...erion.com>
---
diff -pNur patch1/drivers/net/s2io.c patch2/drivers/net/s2io.c
--- patch1/drivers/net/s2io.c 2007-04-17 10:45:23.000000000 +0530
+++ patch2/drivers/net/s2io.c 2007-04-17 10:45:56.000000000 +0530
@@ -281,6 +281,8 @@ static char ethtool_driver_stats_keys[][
("lro_out_of_sequence_pkts"),
("lro_flush_due_to_max_pkts"),
("lro_avg_aggr_pkts"),
+ ("mem_alloc_fail_cnt"),
+ ("watchdog_timer_cnt")
};
#define S2IO_XENA_STAT_LEN sizeof(ethtool_xena_stats_keys)/ ETH_GSTRING_LEN
@@ -2186,6 +2188,7 @@ static int fill_rxd_3buf(struct s2io_nic
/* skb_shinfo(skb)->frag_list will have L4 data payload */
skb_shinfo(skb)->frag_list = dev_alloc_skb(dev->mtu + ALIGN_SIZE);
if (skb_shinfo(skb)->frag_list == NULL) {
+ nic->mac_control.stats_info->sw_stat.mem_alloc_fail_cnt++;
DBG_PRINT(INFO_DBG, "%s: dev_alloc_skb failed\n ", dev->name);
return -ENOMEM ;
}
@@ -2319,6 +2322,8 @@ static int fill_rx_buffers(struct s2io_n
wmb();
first_rxdp->Control_1 |= RXD_OWN_XENA;
}
+ nic->mac_control.stats_info->sw_stat. \
+ mem_alloc_fail_cnt++;
return -ENOMEM ;
}
if (nic->rxd_mode == RXD_MODE_1) {
@@ -3673,6 +3678,7 @@ static int s2io_enable_msi_x(struct s2io
GFP_KERNEL);
if (nic->entries == NULL) {
DBG_PRINT(INFO_DBG, "%s: Memory allocation failed\n", __FUNCTION__);
+ nic->mac_control.stats_info->sw_stat.mem_alloc_fail_cnt++;
return -ENOMEM;
}
memset(nic->entries, 0, MAX_REQUESTED_MSI_X * sizeof(struct msix_entry));
@@ -3682,6 +3688,7 @@ static int s2io_enable_msi_x(struct s2io
GFP_KERNEL);
if (nic->s2io_entries == NULL) {
DBG_PRINT(INFO_DBG, "%s: Memory allocation failed\n", __FUNCTION__);
+ nic->mac_control.stats_info->sw_stat.mem_alloc_fail_cnt++;
kfree(nic->entries);
return -ENOMEM;
}
@@ -5015,8 +5022,10 @@ static void s2io_vpd_read(struct s2io_ni
strcpy(nic->serial_num, "NOT AVAILABLE");
vpd_data = kmalloc(256, GFP_KERNEL);
- if (!vpd_data)
+ if (!vpd_data) {
+ nic->mac_control.stats_info->sw_stat.mem_alloc_fail_cnt++;
return;
+ }
for (i = 0; i < 256; i +=4 ) {
pci_write_config_byte(nic->pdev, (vpd_addr + 2), i);
@@ -5776,6 +5785,8 @@ static void s2io_get_ethtool_stats(struc
}
else
tmp_stats[i++] = 0;
+ tmp_stats[i++] = stat_info->sw_stat.mem_alloc_fail_cnt;
+ tmp_stats[i++] = stat_info->sw_stat.watchdog_timer_cnt;
}
static int s2io_ethtool_get_regs_len(struct net_device *dev)
@@ -6112,7 +6123,10 @@ static int set_rxd_buffer_pointer(struct
*skb = dev_alloc_skb(size);
if (!(*skb)) {
DBG_PRINT(INFO_DBG, "%s: Out of ", dev->name);
- DBG_PRINT(INFO_DBG, "memory to allocate SKBs\n");
+ DBG_PRINT(INFO_DBG, "memory to allocate ");
+ DBG_PRINT(INFO_DBG, "1 buf mode SKBs\n");
+ sp->mac_control.stats_info->sw_stat. \
+ mem_alloc_fail_cnt++;
return -ENOMEM ;
}
/* storing the mapped addr in a temp variable
@@ -6134,8 +6148,11 @@ static int set_rxd_buffer_pointer(struct
} else {
*skb = dev_alloc_skb(size);
if (!(*skb)) {
- DBG_PRINT(INFO_DBG, "%s: dev_alloc_skb failed\n",
- dev->name);
+ DBG_PRINT(INFO_DBG, "%s: Out of ", dev->name);
+ DBG_PRINT(INFO_DBG, "memory to allocate ");
+ DBG_PRINT(INFO_DBG, "2 buf mode SKBs\n");
+ sp->mac_control.stats_info->sw_stat. \
+ mem_alloc_fail_cnt++;
return -ENOMEM;
}
((struct RxD3*)rxdp)->Buffer2_ptr = *temp2 =
@@ -6161,8 +6178,11 @@ static int set_rxd_buffer_pointer(struct
} else {
*skb = dev_alloc_skb(size);
if (!(*skb)) {
- DBG_PRINT(INFO_DBG, "%s: dev_alloc_skb failed\n",
- dev->name);
+ DBG_PRINT(INFO_DBG, "%s: Out of ", dev->name);
+ DBG_PRINT(INFO_DBG, "memory to allocate ");
+ DBG_PRINT(INFO_DBG, "3 buf mode SKBs\n");
+ sp->mac_control.stats_info->sw_stat. \
+ mem_alloc_fail_cnt++;
return -ENOMEM;
}
((struct RxD3*)rxdp)->Buffer0_ptr = *temp0 =
@@ -6182,6 +6202,8 @@ static int set_rxd_buffer_pointer(struct
if (skb_shinfo(*skb)->frag_list == NULL) {
DBG_PRINT(ERR_DBG, "%s: dev_alloc_skb \
failed\n ", dev->name);
+ sp->mac_control.stats_info->sw_stat. \
+ mem_alloc_fail_cnt++;
return -ENOMEM ;
}
frag_list = skb_shinfo(*skb)->frag_list;
@@ -6601,6 +6623,7 @@ static void s2io_tx_watchdog(struct net_
struct s2io_nic *sp = dev->priv;
if (netif_carrier_ok(dev)) {
+ sp->mac_control.stats_info->sw_stat.watchdog_timer_cnt++;
schedule_work(&sp->rst_timer_task);
sp->mac_control.stats_info->sw_stat.soft_reset_cnt++;
}
diff -pNur patch1/drivers/net/s2io.h patch2/drivers/net/s2io.h
--- patch1/drivers/net/s2io.h 2007-04-17 10:45:32.000000000 +0530
+++ patch2/drivers/net/s2io.h 2007-04-11 15:30:21.000000000 +0530
@@ -95,6 +95,9 @@ struct swStat {
unsigned long long flush_max_pkts;
unsigned long long sum_avg_pkts_aggregated;
unsigned long long num_aggregations;
+ /* Other statistics */
+ unsigned long long mem_alloc_fail_cnt;
+ unsigned long long watchdog_timer_cnt;
};
/* Xpak releated alarm and warnings */
-
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