Including phy.h and phy_fixed.h into net/dsa.h causes phy*.h to be an unnecessary dependency for quite a large amount of the kernel. There's very little which actually requires definitions from phy.h in net/dsa.h - the include itself only wants the declaration of a couple of structures and IFNAMSIZ.
Add linux/if.h for IFNAMSIZ, declarations for the structures, phy.h to mv88e6xxx.h as it needs it for phy_interface_t, and remove both phy.h and phy_fixed.h from net/dsa.h. This patch reduces from around 800 files rebuilt to around 40 - even with ccache, the time difference is noticable. Tested-by: Vivien Didelot <vivien.dide...@savoirfairelinux.com> Reviewed-by: Florian Fainelli <f.faine...@gmail.com> Signed-off-by: Russell King <rmk+ker...@armlinux.org.uk> --- drivers/net/dsa/mv88e6xxx/mv88e6xxx.h | 1 + include/net/dsa.h | 6 ++++-- 2 files changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h b/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h index af54baea47cf..3a949095068a 100644 --- a/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h +++ b/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h @@ -15,6 +15,7 @@ #include <linux/if_vlan.h> #include <linux/irq.h> #include <linux/gpio/consumer.h> +#include <linux/phy.h> #ifndef UINT64_MAX #define UINT64_MAX (u64)(~((u64)0)) diff --git a/include/net/dsa.h b/include/net/dsa.h index b122196d5a1f..887b2f98f9ea 100644 --- a/include/net/dsa.h +++ b/include/net/dsa.h @@ -11,15 +11,17 @@ #ifndef __LINUX_NET_DSA_H #define __LINUX_NET_DSA_H +#include <linux/if.h> #include <linux/if_ether.h> #include <linux/list.h> #include <linux/timer.h> #include <linux/workqueue.h> #include <linux/of.h> -#include <linux/phy.h> -#include <linux/phy_fixed.h> #include <linux/ethtool.h> +struct phy_device; +struct fixed_phy_status; + enum dsa_tag_protocol { DSA_TAG_PROTO_NONE = 0, DSA_TAG_PROTO_DSA, -- 2.7.4