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| author | Gabor Juhos <juhosg@openwrt.org> | 2011-05-07 12:40:26 +0000 |
|---|---|---|
| committer | Gabor Juhos <juhosg@openwrt.org> | 2011-05-07 12:40:26 +0000 |
| commit | 896e1d1ab42af977f5c51fad99f02f228bda953c (patch) | |
| tree | dd3edf03a19ecefc33067ed66816835806261525 | |
| parent | a6708d20d13e42572e8c10d6be989affb1a2fc31 (diff) | |
| download | mtk-20170518-896e1d1ab42af977f5c51fad99f02f228bda953c.zip mtk-20170518-896e1d1ab42af977f5c51fad99f02f228bda953c.tar.gz mtk-20170518-896e1d1ab42af977f5c51fad99f02f228bda953c.tar.bz2 | |
ar71xx: ag71xx: use dynamically allocated buffer for napi_stats
SVN-Revision: 26843
| -rw-r--r-- | target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_debugfs.c | 28 |
1 files changed, 19 insertions, 9 deletions
diff --git a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_debugfs.c b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_debugfs.c index eca0905..47b7cbd 100644 --- a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_debugfs.c +++ b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_debugfs.c @@ -99,38 +99,48 @@ static ssize_t read_file_napi_stats(struct file *file, char __user *user_buf, { struct ag71xx *ag = file->private_data; struct ag71xx_napi_stats *stats = &ag->debug.napi_stats; - char buf[2048]; + char *buf; + unsigned int buflen; unsigned int len = 0; unsigned long rx_avg = 0; unsigned long tx_avg = 0; + int ret; int i; + buflen = 2048; + buf = kmalloc(buflen, GFP_KERNEL); + if (!buf) + return -ENOMEM; + if (stats->rx_count) rx_avg = stats->rx_packets / stats->rx_count; if (stats->tx_count) tx_avg = stats->tx_packets / stats->tx_count; - len += snprintf(buf + len, sizeof(buf) - len, "%3s %10s %10s\n", + len += snprintf(buf + len, buflen - len, "%3s %10s %10s\n", "len", "rx", "tx"); for (i = 1; i <= AG71XX_NAPI_WEIGHT; i++) - len += snprintf(buf + len, sizeof(buf) - len, + len += snprintf(buf + len, buflen - len, "%3d: %10lu %10lu\n", i, stats->rx[i], stats->tx[i]); - len += snprintf(buf + len, sizeof(buf) - len, "\n"); + len += snprintf(buf + len, buflen - len, "\n"); - len += snprintf(buf + len, sizeof(buf) - len, "%3s: %10lu %10lu\n", + len += snprintf(buf + len, buflen - len, "%3s: %10lu %10lu\n", "sum", stats->rx_count, stats->tx_count); - len += snprintf(buf + len, sizeof(buf) - len, "%3s: %10lu %10lu\n", + len += snprintf(buf + len, buflen - len, "%3s: %10lu %10lu\n", "avg", rx_avg, tx_avg); - len += snprintf(buf + len, sizeof(buf) - len, "%3s: %10lu %10lu\n", + len += snprintf(buf + len, buflen - len, "%3s: %10lu %10lu\n", "max", stats->rx_packets_max, stats->tx_packets_max); - len += snprintf(buf + len, sizeof(buf) - len, "%3s: %10lu %10lu\n", + len += snprintf(buf + len, buflen - len, "%3s: %10lu %10lu\n", "pkt", stats->rx_packets, stats->tx_packets); - return simple_read_from_buffer(user_buf, count, ppos, buf, len); + ret = simple_read_from_buffer(user_buf, count, ppos, buf, len); + kfree(buf); + + return ret; } static const struct file_operations ag71xx_fops_napi_stats = { |