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* [PATCH RFC] net: dsa: remove unnecessary phy.h include
@ 2017-01-18  0:14 Russell King - ARM Linux
  2017-01-18  1:11 ` Vivien Didelot
                   ` (3 more replies)
  0 siblings, 4 replies; 48+ messages in thread
From: Russell King - ARM Linux @ 2017-01-18  0:14 UTC (permalink / raw)
  To: Andrew Lunn, Vivien Didelot
  Cc: Florian Fainelli, David S. Miller, netdev, linux-kernel

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.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
---
I noticed when I touched linux/phy.h that a lot of the kernel ended up
being unexpectedly rebuilt, as linux/netdevice.h includes net/dsa.h,
which then then includes linux/phy.h.  I've tested this change on both
ARM and ARM64, but I'd suggest letting the 0-day builder have a bite
at this, and then only taking it if everyone is confident that there's
a slim chance of any problems.  Also, it may need some rework to apply
to davem's tree.  All of the above makes this RFC only.

 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 a319c06d82e3..d247b0639ed4 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,

-- 
RMK's Patch system: http://www.armlinux.org.uk/developer/patches/
FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up
according to speedtest.net.

^ permalink raw reply related	[flat|nested] 48+ messages in thread

end of thread, other threads:[~2017-02-01 19:08 UTC | newest]

Thread overview: 48+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2017-01-18  0:14 [PATCH RFC] net: dsa: remove unnecessary phy.h include Russell King - ARM Linux
2017-01-18  1:11 ` Vivien Didelot
2017-01-18  1:13 ` Florian Fainelli
2017-01-18 21:37 ` David Miller
2017-01-18 21:46   ` Russell King - ARM Linux
2017-01-18 21:48     ` David Miller
2017-01-18 21:47   ` David Miller
2017-01-31 19:17 ` [PATCH 4.10-rc3 00/13] " Russell King - ARM Linux
2017-01-31 19:17   ` Russell King - ARM Linux
2017-01-31 19:17   ` Russell King - ARM Linux
2017-01-31 19:18   ` [PATCH 4.10-rc3 01/13] net: sunrpc: fix build errors when linux/phy*.h is removed from net/dsa.h Russell King
2017-01-31 19:48     ` Anna Schumaker
2017-01-31 19:48       ` Anna Schumaker
2017-01-31 19:48       ` Anna Schumaker
2017-01-31 19:48       ` Anna Schumaker
2017-01-31 19:18   ` [PATCH 4.10-rc3 02/13] net: cgroups: " Russell King
2017-01-31 19:18   ` [PATCH 4.10-rc3 03/13] net: macb: " Russell King
2017-02-01  9:40     ` Nicolas Ferre
2017-02-01  9:40       ` Nicolas Ferre
2017-02-01  9:40       ` Nicolas Ferre
2017-02-01  9:40       ` Nicolas Ferre
2017-01-31 19:18   ` [PATCH 4.10-rc3 04/13] net: lan78xx: " Russell King
2017-01-31 19:18   ` [PATCH 4.10-rc3 05/13] net: bgmac: " Russell King
2017-02-01  9:55     ` Rafał Miłecki
2017-01-31 19:18   ` [PATCH 4.10-rc3 06/13] net: fman: " Russell King
2017-01-31 19:18   ` [PATCH 4.10-rc3 07/13] net: mvneta: " Russell King
2017-02-01 10:27     ` Thomas Petazzoni
2017-02-01 10:27       ` Thomas Petazzoni
2017-01-31 19:19   ` [PATCH 4.10-rc3 08/13] net: emac: " Russell King
2017-01-31 20:15     ` Timur Tabi
2017-01-31 20:15       ` Timur Tabi
2017-01-31 19:19   ` [PATCH 4.10-rc3 09/13] iscsi: " Russell King
2017-01-31 19:32     ` Bart Van Assche
2017-01-31 19:32       ` Bart Van Assche
2017-01-31 19:32       ` Bart Van Assche
2017-01-31 19:32       ` Bart Van Assche
2017-01-31 19:19   ` [PATCH 4.10-rc3 10/13] MIPS: Octeon: Remove unnecessary MODULE_*() Russell King
2017-01-31 19:19   ` [PATCH 4.10-rc3 11/13] net: liquidio: fix build errors when linux/phy*.h is removed from net/dsa.h Russell King
2017-02-01 19:07     ` Felix Manlunas
2017-02-01 19:07       ` Felix Manlunas
2017-02-01 19:07       ` Felix Manlunas
2017-02-01 19:07       ` Felix Manlunas
2017-01-31 19:19   ` [PATCH 4.10-rc3 12/13] net: ath5k: " Russell King
2017-02-01  5:34     ` Kalle Valo
2017-01-31 19:19   ` [PATCH 4.10-rc3 13/13] net: dsa: remove unnecessary phy*.h includes Russell King
2017-02-01  2:42   ` [PATCH 4.10-rc3 00/13] net: dsa: remove unnecessary phy.h include Florian Fainelli
2017-02-01  2:42     ` Florian Fainelli
2017-02-01  2:42     ` Florian Fainelli

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