The /sys/class/net/*/wireless/ direcory is, as far as I know, not used by anyone. Additionally, the same data is available via wext ioctls. Hence the sysfs files are pretty much useless. This patch makes them optional and schedules them for removal. Signed-off-by: Johannes Berg <johannes@xxxxxxxxxxxxxxxx> Cc: Jean Tourrilhes <jt@xxxxxxxxxx> --- Documentation/feature-removal-schedule.txt | 8 ++++++++ net/core/net-sysfs.c | 4 ++-- net/wireless/Kconfig | 11 +++++++++++ 3 files changed, 21 insertions(+), 2 deletions(-) --- everything.orig/net/core/net-sysfs.c 2008-05-17 13:22:21.000000000 +0200 +++ everything/net/core/net-sysfs.c 2008-05-17 13:23:43.000000000 +0200 @@ -318,7 +318,7 @@ static struct attribute_group netstat_gr .attrs = netstat_attrs, }; -#ifdef CONFIG_WIRELESS_EXT +#ifdef CONFIG_WIRELESS_EXT_SYSFS /* helper function that does all the locking etc for wireless stats */ static ssize_t wireless_show(struct device *d, char *buf, ssize_t (*format)(const struct iw_statistics *, @@ -460,7 +460,7 @@ int netdev_register_kobject(struct net_d if (net->get_stats) *groups++ = &netstat_group; -#ifdef CONFIG_WIRELESS_EXT +#ifdef CONFIG_WIRELESS_EXT_SYSFS if (net->wireless_handlers && net->wireless_handlers->get_wireless_stats) *groups++ = &wireless_group; #endif --- everything.orig/net/wireless/Kconfig 2008-05-17 13:22:21.000000000 +0200 +++ everything/net/wireless/Kconfig 2008-05-17 14:09:01.000000000 +0200 @@ -29,3 +29,14 @@ config WIRELESS_EXT Say N (if you can) unless you know you need wireless extensions for external modules. + +config WIRELESS_EXT_SYSFS + bool "Wireless extensions sysfs files" + default y + depends on WIRELESS_EXT && SYSFS + help + This option enables the deprecated wireless statistics + files in /sys/class/net/*/wireless/. The same information + is available via the ioctls as well. + + Say Y if you have programs using it (we don't know of any). --- everything.orig/Documentation/feature-removal-schedule.txt 2008-05-17 13:22:20.000000000 +0200 +++ everything/Documentation/feature-removal-schedule.txt 2008-05-17 14:08:37.000000000 +0200 @@ -304,3 +304,11 @@ When: 2.6.26 Why: Implementation became generic; users should now include linux/semaphore.h instead. Who: Matthew Wilcox <willy@xxxxxxxxxxxxxxx> + +--------------------------- + +What: Code that is now under CONFIG_WIRELESS_EXT_SYSFS + (in net/core/net-sysfs.c) +When: June 2009 +Why: Not used by anyone, over 1K .text/.data size reduction. +Who: Johannes Berg <johannes@xxxxxxxxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
