mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-04 22:50:39 +02:00
kernel: add some debloat patches, strip down procfs and make O_DIRECT support optional, saves ~15K after lzma on MIPS
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@34737 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
parent
fa19688492
commit
9d5658343a
@ -607,6 +607,7 @@ CONFIG_DEVPORT=y
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# CONFIG_DEVPTS_MULTIPLE_INSTANCES is not set
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# CONFIG_DEVTMPFS is not set
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# CONFIG_DEVTMPFS_MOUNT is not set
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# CONFIG_DIRECT_IO is not set
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# CONFIG_DISCONTIGMEM_MANUAL is not set
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# CONFIG_DISPLAY_SUPPORT is not set
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# CONFIG_DL2K is not set
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@ -2279,6 +2280,7 @@ CONFIG_PRINT_STACK_DEPTH=64
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CONFIG_PROC_FS=y
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# CONFIG_PROC_KCORE is not set
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# CONFIG_PROC_PAGE_MONITOR is not set
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CONFIG_PROC_STRIPPED=y
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CONFIG_PROC_SYSCTL=y
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# CONFIG_PROFILE_ALL_BRANCHES is not set
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# CONFIG_PROFILE_ANNOTATED_BRANCHES is not set
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@ -616,6 +616,7 @@ CONFIG_DEVPORT=y
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# CONFIG_DEVTMPFS is not set
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# CONFIG_DEVTMPFS_MOUNT is not set
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# CONFIG_DGRP is not set
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# CONFIG_DIRECT_IO is not set
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# CONFIG_DISCONTIGMEM_MANUAL is not set
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# CONFIG_DISPLAY_SUPPORT is not set
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# CONFIG_DL2K is not set
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@ -2309,6 +2310,7 @@ CONFIG_PRINT_STACK_DEPTH=64
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CONFIG_PROC_FS=y
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# CONFIG_PROC_KCORE is not set
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# CONFIG_PROC_PAGE_MONITOR is not set
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CONFIG_PROC_STRIPPED=y
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CONFIG_PROC_SYSCTL=y
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# CONFIG_PROFILE_ALL_BRANCHES is not set
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# CONFIG_PROFILE_ANNOTATED_BRANCHES is not set
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46
target/linux/generic/patches-3.6/901-debloat_sock_diag.patch
Normal file
46
target/linux/generic/patches-3.6/901-debloat_sock_diag.patch
Normal file
@ -0,0 +1,46 @@
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--- a/net/Kconfig
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+++ b/net/Kconfig
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@@ -85,6 +85,9 @@ source "net/netlabel/Kconfig"
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endif # if INET
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+config SOCK_DIAG
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+ bool
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+
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config NETWORK_SECMARK
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bool "Security Marking"
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help
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--- a/net/core/Makefile
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+++ b/net/core/Makefile
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@@ -8,9 +8,9 @@ obj-y := sock.o request_sock.o skbuff.o
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obj-$(CONFIG_SYSCTL) += sysctl_net_core.o
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obj-y += dev.o ethtool.o dev_addr_lists.o dst.o netevent.o \
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- neighbour.o rtnetlink.o utils.o link_watch.o filter.o \
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- sock_diag.o
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+ neighbour.o rtnetlink.o utils.o link_watch.o filter.o
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+obj-$(CONFIG_SOCK_DIAG) += sock_diag.o
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obj-$(CONFIG_XFRM) += flow.o
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obj-y += net-sysfs.o
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obj-$(CONFIG_NET_PKTGEN) += pktgen.o
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--- a/net/ipv4/Kconfig
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+++ b/net/ipv4/Kconfig
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@@ -404,6 +404,7 @@ config INET_LRO
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config INET_DIAG
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tristate "INET: socket monitoring interface"
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+ select SOCK_DIAG
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default y
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---help---
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Support for INET (TCP, DCCP, etc) socket monitoring interface used by
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--- a/net/unix/Kconfig
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+++ b/net/unix/Kconfig
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@@ -22,6 +22,7 @@ config UNIX
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config UNIX_DIAG
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tristate "UNIX: socket monitoring interface"
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depends on UNIX
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+ select SOCK_DIAG
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default n
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---help---
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Support for UNIX socket monitoring interface used by the ss tool.
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351
target/linux/generic/patches-3.6/902-debloat_proc.patch
Normal file
351
target/linux/generic/patches-3.6/902-debloat_proc.patch
Normal file
@ -0,0 +1,351 @@
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--- a/fs/locks.c
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+++ b/fs/locks.c
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@@ -2269,6 +2269,8 @@ static const struct file_operations proc
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static int __init proc_locks_init(void)
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{
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+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
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+ return 0;
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proc_create("locks", 0, NULL, &proc_locks_operations);
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return 0;
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}
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--- a/fs/proc/Kconfig
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+++ b/fs/proc/Kconfig
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@@ -67,3 +67,8 @@ config PROC_PAGE_MONITOR
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/proc/pid/smaps, /proc/pid/clear_refs, /proc/pid/pagemap,
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/proc/kpagecount, and /proc/kpageflags. Disabling these
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interfaces will reduce the size of the kernel by approximately 4kb.
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+
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+config PROC_STRIPPED
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+ default n
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+ depends on EXPERT
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+ bool "Strip non-essential /proc functionality to reduce code size"
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--- a/fs/proc/consoles.c
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+++ b/fs/proc/consoles.c
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@@ -108,6 +108,9 @@ static const struct file_operations proc
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static int __init proc_consoles_init(void)
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{
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+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
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+ return 0;
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+
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proc_create("consoles", 0, NULL, &proc_consoles_operations);
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return 0;
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}
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--- a/fs/proc/proc_tty.c
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+++ b/fs/proc/proc_tty.c
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@@ -143,7 +143,10 @@ static const struct file_operations proc
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void proc_tty_register_driver(struct tty_driver *driver)
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{
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struct proc_dir_entry *ent;
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-
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+
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+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
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+ return;
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+
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if (!driver->driver_name || driver->proc_entry ||
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!driver->ops->proc_fops)
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return;
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@@ -160,6 +163,9 @@ void proc_tty_unregister_driver(struct t
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{
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struct proc_dir_entry *ent;
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+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
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+ return;
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+
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ent = driver->proc_entry;
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if (!ent)
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return;
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@@ -174,6 +180,9 @@ void proc_tty_unregister_driver(struct t
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*/
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void __init proc_tty_init(void)
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{
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+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
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+ return;
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+
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if (!proc_mkdir("tty", NULL))
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return;
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proc_tty_ldisc = proc_mkdir("tty/ldisc", NULL);
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--- a/kernel/exec_domain.c
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+++ b/kernel/exec_domain.c
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@@ -173,6 +173,8 @@ static const struct file_operations exec
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static int __init proc_execdomains_init(void)
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{
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+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
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+ return 0;
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proc_create("execdomains", 0, NULL, &execdomains_proc_fops);
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return 0;
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}
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--- a/kernel/irq/proc.c
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+++ b/kernel/irq/proc.c
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@@ -311,6 +311,9 @@ void register_irq_proc(unsigned int irq,
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{
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char name [MAX_NAMELEN];
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+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
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+ return;
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+
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if (!root_irq_dir || (desc->irq_data.chip == &no_irq_chip) || desc->dir)
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return;
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@@ -347,6 +350,9 @@ void unregister_irq_proc(unsigned int ir
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{
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char name [MAX_NAMELEN];
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+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
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+ return;
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+
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if (!root_irq_dir || !desc->dir)
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return;
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#ifdef CONFIG_SMP
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@@ -386,6 +392,9 @@ void init_irq_proc(void)
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unsigned int irq;
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struct irq_desc *desc;
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+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
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+ return;
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+
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/* create /proc/irq */
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root_irq_dir = proc_mkdir("irq", NULL);
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if (!root_irq_dir)
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--- a/kernel/time/timer_list.c
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+++ b/kernel/time/timer_list.c
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@@ -293,6 +293,8 @@ static int __init init_timer_list_procfs
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{
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struct proc_dir_entry *pe;
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+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
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+ return 0;
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pe = proc_create("timer_list", 0444, NULL, &timer_list_fops);
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if (!pe)
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return -ENOMEM;
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--- a/mm/vmalloc.c
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+++ b/mm/vmalloc.c
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@@ -2641,6 +2641,8 @@ static const struct file_operations proc
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static int __init proc_vmalloc_init(void)
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{
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+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
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+ return 0;
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proc_create("vmallocinfo", S_IRUSR, NULL, &proc_vmalloc_operations);
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return 0;
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}
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--- a/mm/vmstat.c
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+++ b/mm/vmstat.c
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@@ -1212,10 +1212,12 @@ static int __init setup_vmstat(void)
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start_cpu_timer(cpu);
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#endif
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#ifdef CONFIG_PROC_FS
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- proc_create("buddyinfo", S_IRUGO, NULL, &fragmentation_file_operations);
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- proc_create("pagetypeinfo", S_IRUGO, NULL, &pagetypeinfo_file_ops);
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+ if (!IS_ENABLED(CONFIG_PROC_STRIPPED)) {
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+ proc_create("buddyinfo", S_IRUGO, NULL, &fragmentation_file_operations);
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+ proc_create("pagetypeinfo", S_IRUGO, NULL, &pagetypeinfo_file_ops);
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+ proc_create("zoneinfo", S_IRUGO, NULL, &proc_zoneinfo_file_operations);
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+ }
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proc_create("vmstat", S_IRUGO, NULL, &proc_vmstat_file_operations);
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- proc_create("zoneinfo", S_IRUGO, NULL, &proc_zoneinfo_file_operations);
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#endif
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return 0;
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}
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--- a/net/8021q/vlanproc.c
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+++ b/net/8021q/vlanproc.c
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@@ -127,6 +127,9 @@ void vlan_proc_cleanup(struct net *net)
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{
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struct vlan_net *vn = net_generic(net, vlan_net_id);
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+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
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+ return;
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+
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if (vn->proc_vlan_conf)
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remove_proc_entry(name_conf, vn->proc_vlan_dir);
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@@ -146,6 +149,9 @@ int __net_init vlan_proc_init(struct net
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{
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struct vlan_net *vn = net_generic(net, vlan_net_id);
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+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
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+ return 0;
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+
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vn->proc_vlan_dir = proc_net_mkdir(net, name_root, net->proc_net);
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if (!vn->proc_vlan_dir)
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goto err;
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--- a/net/core/dev.c
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+++ b/net/core/dev.c
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@@ -4425,9 +4425,11 @@ static int __net_init dev_proc_net_init(
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if (!proc_net_fops_create(net, "dev", S_IRUGO, &dev_seq_fops))
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goto out;
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- if (!proc_net_fops_create(net, "softnet_stat", S_IRUGO, &softnet_seq_fops))
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+ if (!IS_ENABLED(CONFIG_PROC_STRIPPED) &&
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+ !proc_net_fops_create(net, "softnet_stat", S_IRUGO, &softnet_seq_fops))
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goto out_dev;
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- if (!proc_net_fops_create(net, "ptype", S_IRUGO, &ptype_seq_fops))
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+ if (!IS_ENABLED(CONFIG_PROC_STRIPPED) &&
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+ !proc_net_fops_create(net, "ptype", S_IRUGO, &ptype_seq_fops))
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goto out_softnet;
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if (wext_proc_init(net))
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@@ -4436,9 +4438,11 @@ static int __net_init dev_proc_net_init(
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out:
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return rc;
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out_ptype:
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- proc_net_remove(net, "ptype");
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+ if (!IS_ENABLED(CONFIG_PROC_STRIPPED))
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+ proc_net_remove(net, "ptype");
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out_softnet:
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- proc_net_remove(net, "softnet_stat");
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+ if (!IS_ENABLED(CONFIG_PROC_STRIPPED))
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+ proc_net_remove(net, "softnet_stat");
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out_dev:
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proc_net_remove(net, "dev");
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goto out;
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@@ -4448,8 +4452,10 @@ static void __net_exit dev_proc_net_exit
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{
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wext_proc_exit(net);
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- proc_net_remove(net, "ptype");
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- proc_net_remove(net, "softnet_stat");
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+ if (!IS_ENABLED(CONFIG_PROC_STRIPPED)) {
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+ proc_net_remove(net, "ptype");
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+ proc_net_remove(net, "softnet_stat");
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+ }
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proc_net_remove(net, "dev");
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}
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--- a/net/core/sock.c
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+++ b/net/core/sock.c
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@@ -2748,6 +2748,8 @@ static __net_initdata struct pernet_oper
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static int __init proto_init(void)
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{
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+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
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+ return 0;
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return register_pernet_subsys(&proto_net_ops);
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}
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--- a/net/ipv4/fib_trie.c
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+++ b/net/ipv4/fib_trie.c
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@@ -2604,10 +2604,12 @@ static const struct file_operations fib_
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int __net_init fib_proc_init(struct net *net)
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{
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- if (!proc_net_fops_create(net, "fib_trie", S_IRUGO, &fib_trie_fops))
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+ if (!IS_ENABLED(CONFIG_PROC_STRIPPED) &&
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+ !proc_net_fops_create(net, "fib_trie", S_IRUGO, &fib_trie_fops))
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goto out1;
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- if (!proc_net_fops_create(net, "fib_triestat", S_IRUGO,
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+ if (!IS_ENABLED(CONFIG_PROC_STRIPPED) &&
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+ !proc_net_fops_create(net, "fib_triestat", S_IRUGO,
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&fib_triestat_fops))
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goto out2;
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@@ -2626,8 +2628,10 @@ out1:
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void __net_exit fib_proc_exit(struct net *net)
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{
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- proc_net_remove(net, "fib_trie");
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- proc_net_remove(net, "fib_triestat");
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+ if (!IS_ENABLED(CONFIG_PROC_STRIPPED)) {
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+ proc_net_remove(net, "fib_trie");
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+ proc_net_remove(net, "fib_triestat");
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+ }
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proc_net_remove(net, "route");
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}
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--- a/net/ipv4/igmp.c
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+++ b/net/ipv4/igmp.c
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@@ -2661,6 +2661,8 @@ static struct pernet_operations igmp_net
|
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int __init igmp_mc_proc_init(void)
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{
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+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
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+ return 0;
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return register_pernet_subsys(&igmp_net_ops);
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}
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#endif
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--- a/net/ipv4/ipmr.c
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+++ b/net/ipv4/ipmr.c
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@@ -70,6 +70,10 @@
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#define CONFIG_IP_PIMSM 1
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#endif
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+#ifdef CONFIG_PROC_STRIPPED
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+#undef CONFIG_PROC_FS
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+#endif
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+
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struct mr_table {
|
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struct list_head list;
|
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#ifdef CONFIG_NET_NS
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--- a/net/ipv4/proc.c
|
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+++ b/net/ipv4/proc.c
|
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@@ -498,6 +498,9 @@ static __net_initdata struct pernet_oper
|
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|
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int __init ip_misc_proc_init(void)
|
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{
|
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+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
|
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+ return 0;
|
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+
|
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return register_pernet_subsys(&ip_proc_ops);
|
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}
|
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|
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--- a/net/ipv4/route.c
|
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+++ b/net/ipv4/route.c
|
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@@ -427,6 +427,9 @@ static struct pernet_operations ip_rt_pr
|
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|
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static int __init ip_rt_proc_init(void)
|
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{
|
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+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
|
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+ return 0;
|
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+
|
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return register_pernet_subsys(&ip_rt_proc_ops);
|
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}
|
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|
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--- a/ipc/msg.c
|
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+++ b/ipc/msg.c
|
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@@ -135,6 +135,9 @@ void __init msg_init(void)
|
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printk(KERN_INFO "msgmni has been set to %d\n",
|
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init_ipc_ns.msg_ctlmni);
|
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|
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+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
|
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+ return;
|
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+
|
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ipc_init_proc_interface("sysvipc/msg",
|
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" key msqid perms cbytes qnum lspid lrpid uid gid cuid cgid stime rtime ctime\n",
|
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IPC_MSG_IDS, sysvipc_msg_proc_show);
|
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--- a/ipc/sem.c
|
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+++ b/ipc/sem.c
|
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@@ -185,6 +185,8 @@ void sem_exit_ns(struct ipc_namespace *n
|
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void __init sem_init (void)
|
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{
|
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sem_init_ns(&init_ipc_ns);
|
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+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
|
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+ return;
|
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ipc_init_proc_interface("sysvipc/sem",
|
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" key semid perms nsems uid gid cuid cgid otime ctime\n",
|
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IPC_SEM_IDS, sysvipc_sem_proc_show);
|
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--- a/ipc/shm.c
|
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+++ b/ipc/shm.c
|
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@@ -115,6 +115,8 @@ pure_initcall(ipc_ns_init);
|
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|
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void __init shm_init (void)
|
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{
|
||||
+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
|
||||
+ return;
|
||||
ipc_init_proc_interface("sysvipc/shm",
|
||||
#if BITS_PER_LONG <= 32
|
||||
" key shmid perms size cpid lpid nattch uid gid cuid cgid atime dtime ctime rss swap\n",
|
||||
--- a/ipc/util.c
|
||||
+++ b/ipc/util.c
|
||||
@@ -148,6 +148,9 @@ void __init ipc_init_proc_interface(cons
|
||||
struct proc_dir_entry *pde;
|
||||
struct ipc_proc_iface *iface;
|
||||
|
||||
+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
|
||||
+ return;
|
||||
+
|
||||
iface = kmalloc(sizeof(*iface), GFP_KERNEL);
|
||||
if (!iface)
|
||||
return;
|
94
target/linux/generic/patches-3.6/903-debloat_direct_io.patch
Normal file
94
target/linux/generic/patches-3.6/903-debloat_direct_io.patch
Normal file
@ -0,0 +1,94 @@
|
||||
--- a/fs/Kconfig
|
||||
+++ b/fs/Kconfig
|
||||
@@ -62,6 +62,11 @@ config FILE_LOCKING
|
||||
for filesystems like NFS and for the flock() system
|
||||
call. Disabling this option saves about 11k.
|
||||
|
||||
+config DIRECT_IO
|
||||
+ bool "Enable O_DIRECT support" if EXPERT
|
||||
+ depends on BLOCK
|
||||
+ default y
|
||||
+
|
||||
source "fs/notify/Kconfig"
|
||||
|
||||
source "fs/quota/Kconfig"
|
||||
--- a/fs/Makefile
|
||||
+++ b/fs/Makefile
|
||||
@@ -14,7 +14,8 @@ obj-y := open.o read_write.o file_table.
|
||||
stack.o fs_struct.o statfs.o
|
||||
|
||||
ifeq ($(CONFIG_BLOCK),y)
|
||||
-obj-y += buffer.o bio.o block_dev.o direct-io.o mpage.o ioprio.o
|
||||
+obj-y += buffer.o bio.o block_dev.o mpage.o ioprio.o
|
||||
+obj-$(CONFIG_DIRECT_IO) += direct-io.o
|
||||
else
|
||||
obj-y += no-block.o
|
||||
endif
|
||||
--- a/include/linux/fs.h
|
||||
+++ b/include/linux/fs.h
|
||||
@@ -2632,20 +2632,36 @@ enum {
|
||||
DIO_SKIP_HOLES = 0x02,
|
||||
};
|
||||
|
||||
+#ifdef CONFIG_DIRECT_IO
|
||||
void dio_end_io(struct bio *bio, int error);
|
||||
|
||||
ssize_t __blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
|
||||
struct block_device *bdev, const struct iovec *iov, loff_t offset,
|
||||
unsigned long nr_segs, get_block_t get_block, dio_iodone_t end_io,
|
||||
dio_submit_t submit_io, int flags);
|
||||
+#else
|
||||
+static inline void dio_end_io(struct bio *bio, int error)
|
||||
+{
|
||||
+}
|
||||
+static inline ssize_t __blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
|
||||
+ struct block_device *bdev, const struct iovec *iov, loff_t offset,
|
||||
+ unsigned long nr_segs, get_block_t get_block, dio_iodone_t end_io,
|
||||
+ dio_submit_t submit_io, int flags)
|
||||
+{
|
||||
+ return -EOPNOTSUPP;
|
||||
+}
|
||||
+#endif
|
||||
+
|
||||
|
||||
static inline ssize_t blockdev_direct_IO(int rw, struct kiocb *iocb,
|
||||
struct inode *inode, const struct iovec *iov, loff_t offset,
|
||||
unsigned long nr_segs, get_block_t get_block)
|
||||
{
|
||||
+#ifdef CONFIG_DIRECT_IO
|
||||
return __blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
|
||||
offset, nr_segs, get_block, NULL, NULL,
|
||||
DIO_LOCKING | DIO_SKIP_HOLES);
|
||||
+#endif
|
||||
}
|
||||
#endif
|
||||
|
||||
--- a/fs/fcntl.c
|
||||
+++ b/fs/fcntl.c
|
||||
@@ -169,8 +169,10 @@ static int setfl(int fd, struct file * f
|
||||
arg |= O_NONBLOCK;
|
||||
|
||||
if (arg & O_DIRECT) {
|
||||
+#ifdef CONFIG_DIRECT_IO
|
||||
if (!filp->f_mapping || !filp->f_mapping->a_ops ||
|
||||
!filp->f_mapping->a_ops->direct_IO)
|
||||
+#endif
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
--- a/fs/open.c
|
||||
+++ b/fs/open.c
|
||||
@@ -636,9 +636,12 @@ int open_check_o_direct(struct file *f)
|
||||
{
|
||||
/* NB: we're sure to have correct a_ops only after f_op->open */
|
||||
if (f->f_flags & O_DIRECT) {
|
||||
+#ifdef CONFIG_DIRECT_IO
|
||||
if (!f->f_mapping->a_ops ||
|
||||
((!f->f_mapping->a_ops->direct_IO) &&
|
||||
- (!f->f_mapping->a_ops->get_xip_mem))) {
|
||||
+ (!f->f_mapping->a_ops->get_xip_mem)))
|
||||
+#endif
|
||||
+ {
|
||||
return -EINVAL;
|
||||
}
|
||||
}
|
46
target/linux/generic/patches-3.7/901-debloat_sock_diag.patch
Normal file
46
target/linux/generic/patches-3.7/901-debloat_sock_diag.patch
Normal file
@ -0,0 +1,46 @@
|
||||
--- a/net/Kconfig
|
||||
+++ b/net/Kconfig
|
||||
@@ -87,6 +87,9 @@ source "net/netlabel/Kconfig"
|
||||
|
||||
endif # if INET
|
||||
|
||||
+config SOCK_DIAG
|
||||
+ bool
|
||||
+
|
||||
config NETWORK_SECMARK
|
||||
bool "Security Marking"
|
||||
help
|
||||
--- a/net/core/Makefile
|
||||
+++ b/net/core/Makefile
|
||||
@@ -8,9 +8,9 @@ obj-y := sock.o request_sock.o skbuff.o
|
||||
obj-$(CONFIG_SYSCTL) += sysctl_net_core.o
|
||||
|
||||
obj-y += dev.o ethtool.o dev_addr_lists.o dst.o netevent.o \
|
||||
- neighbour.o rtnetlink.o utils.o link_watch.o filter.o \
|
||||
- sock_diag.o
|
||||
+ neighbour.o rtnetlink.o utils.o link_watch.o filter.o
|
||||
|
||||
+obj-$(CONFIG_SOCK_DIAG) += sock_diag.o
|
||||
obj-$(CONFIG_XFRM) += flow.o
|
||||
obj-y += net-sysfs.o
|
||||
obj-$(CONFIG_NET_PKTGEN) += pktgen.o
|
||||
--- a/net/ipv4/Kconfig
|
||||
+++ b/net/ipv4/Kconfig
|
||||
@@ -404,6 +404,7 @@ config INET_LRO
|
||||
|
||||
config INET_DIAG
|
||||
tristate "INET: socket monitoring interface"
|
||||
+ select SOCK_DIAG
|
||||
default y
|
||||
---help---
|
||||
Support for INET (TCP, DCCP, etc) socket monitoring interface used by
|
||||
--- a/net/unix/Kconfig
|
||||
+++ b/net/unix/Kconfig
|
||||
@@ -22,6 +22,7 @@ config UNIX
|
||||
config UNIX_DIAG
|
||||
tristate "UNIX: socket monitoring interface"
|
||||
depends on UNIX
|
||||
+ select SOCK_DIAG
|
||||
default n
|
||||
---help---
|
||||
Support for UNIX socket monitoring interface used by the ss tool.
|
351
target/linux/generic/patches-3.7/902-debloat_proc.patch
Normal file
351
target/linux/generic/patches-3.7/902-debloat_proc.patch
Normal file
@ -0,0 +1,351 @@
|
||||
--- a/fs/locks.c
|
||||
+++ b/fs/locks.c
|
||||
@@ -2267,6 +2267,8 @@ static const struct file_operations proc
|
||||
|
||||
static int __init proc_locks_init(void)
|
||||
{
|
||||
+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
|
||||
+ return 0;
|
||||
proc_create("locks", 0, NULL, &proc_locks_operations);
|
||||
return 0;
|
||||
}
|
||||
--- a/fs/proc/Kconfig
|
||||
+++ b/fs/proc/Kconfig
|
||||
@@ -67,3 +67,8 @@ config PROC_PAGE_MONITOR
|
||||
/proc/pid/smaps, /proc/pid/clear_refs, /proc/pid/pagemap,
|
||||
/proc/kpagecount, and /proc/kpageflags. Disabling these
|
||||
interfaces will reduce the size of the kernel by approximately 4kb.
|
||||
+
|
||||
+config PROC_STRIPPED
|
||||
+ default n
|
||||
+ depends on EXPERT
|
||||
+ bool "Strip non-essential /proc functionality to reduce code size"
|
||||
--- a/fs/proc/consoles.c
|
||||
+++ b/fs/proc/consoles.c
|
||||
@@ -108,6 +108,9 @@ static const struct file_operations proc
|
||||
|
||||
static int __init proc_consoles_init(void)
|
||||
{
|
||||
+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
|
||||
+ return 0;
|
||||
+
|
||||
proc_create("consoles", 0, NULL, &proc_consoles_operations);
|
||||
return 0;
|
||||
}
|
||||
--- a/fs/proc/proc_tty.c
|
||||
+++ b/fs/proc/proc_tty.c
|
||||
@@ -143,7 +143,10 @@ static const struct file_operations proc
|
||||
void proc_tty_register_driver(struct tty_driver *driver)
|
||||
{
|
||||
struct proc_dir_entry *ent;
|
||||
-
|
||||
+
|
||||
+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
|
||||
+ return;
|
||||
+
|
||||
if (!driver->driver_name || driver->proc_entry ||
|
||||
!driver->ops->proc_fops)
|
||||
return;
|
||||
@@ -160,6 +163,9 @@ void proc_tty_unregister_driver(struct t
|
||||
{
|
||||
struct proc_dir_entry *ent;
|
||||
|
||||
+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
|
||||
+ return;
|
||||
+
|
||||
ent = driver->proc_entry;
|
||||
if (!ent)
|
||||
return;
|
||||
@@ -174,6 +180,9 @@ void proc_tty_unregister_driver(struct t
|
||||
*/
|
||||
void __init proc_tty_init(void)
|
||||
{
|
||||
+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
|
||||
+ return;
|
||||
+
|
||||
if (!proc_mkdir("tty", NULL))
|
||||
return;
|
||||
proc_tty_ldisc = proc_mkdir("tty/ldisc", NULL);
|
||||
--- a/kernel/exec_domain.c
|
||||
+++ b/kernel/exec_domain.c
|
||||
@@ -173,6 +173,8 @@ static const struct file_operations exec
|
||||
|
||||
static int __init proc_execdomains_init(void)
|
||||
{
|
||||
+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
|
||||
+ return 0;
|
||||
proc_create("execdomains", 0, NULL, &execdomains_proc_fops);
|
||||
return 0;
|
||||
}
|
||||
--- a/kernel/irq/proc.c
|
||||
+++ b/kernel/irq/proc.c
|
||||
@@ -311,6 +311,9 @@ void register_irq_proc(unsigned int irq,
|
||||
{
|
||||
char name [MAX_NAMELEN];
|
||||
|
||||
+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
|
||||
+ return;
|
||||
+
|
||||
if (!root_irq_dir || (desc->irq_data.chip == &no_irq_chip) || desc->dir)
|
||||
return;
|
||||
|
||||
@@ -347,6 +350,9 @@ void unregister_irq_proc(unsigned int ir
|
||||
{
|
||||
char name [MAX_NAMELEN];
|
||||
|
||||
+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
|
||||
+ return;
|
||||
+
|
||||
if (!root_irq_dir || !desc->dir)
|
||||
return;
|
||||
#ifdef CONFIG_SMP
|
||||
@@ -386,6 +392,9 @@ void init_irq_proc(void)
|
||||
unsigned int irq;
|
||||
struct irq_desc *desc;
|
||||
|
||||
+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
|
||||
+ return;
|
||||
+
|
||||
/* create /proc/irq */
|
||||
root_irq_dir = proc_mkdir("irq", NULL);
|
||||
if (!root_irq_dir)
|
||||
--- a/kernel/time/timer_list.c
|
||||
+++ b/kernel/time/timer_list.c
|
||||
@@ -293,6 +293,8 @@ static int __init init_timer_list_procfs
|
||||
{
|
||||
struct proc_dir_entry *pe;
|
||||
|
||||
+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
|
||||
+ return 0;
|
||||
pe = proc_create("timer_list", 0444, NULL, &timer_list_fops);
|
||||
if (!pe)
|
||||
return -ENOMEM;
|
||||
--- a/mm/vmalloc.c
|
||||
+++ b/mm/vmalloc.c
|
||||
@@ -2638,6 +2638,8 @@ static const struct file_operations proc
|
||||
|
||||
static int __init proc_vmalloc_init(void)
|
||||
{
|
||||
+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
|
||||
+ return 0;
|
||||
proc_create("vmallocinfo", S_IRUSR, NULL, &proc_vmalloc_operations);
|
||||
return 0;
|
||||
}
|
||||
--- a/mm/vmstat.c
|
||||
+++ b/mm/vmstat.c
|
||||
@@ -1224,10 +1224,12 @@ static int __init setup_vmstat(void)
|
||||
start_cpu_timer(cpu);
|
||||
#endif
|
||||
#ifdef CONFIG_PROC_FS
|
||||
- proc_create("buddyinfo", S_IRUGO, NULL, &fragmentation_file_operations);
|
||||
- proc_create("pagetypeinfo", S_IRUGO, NULL, &pagetypeinfo_file_ops);
|
||||
+ if (!IS_ENABLED(CONFIG_PROC_STRIPPED)) {
|
||||
+ proc_create("buddyinfo", S_IRUGO, NULL, &fragmentation_file_operations);
|
||||
+ proc_create("pagetypeinfo", S_IRUGO, NULL, &pagetypeinfo_file_ops);
|
||||
+ proc_create("zoneinfo", S_IRUGO, NULL, &proc_zoneinfo_file_operations);
|
||||
+ }
|
||||
proc_create("vmstat", S_IRUGO, NULL, &proc_vmstat_file_operations);
|
||||
- proc_create("zoneinfo", S_IRUGO, NULL, &proc_zoneinfo_file_operations);
|
||||
#endif
|
||||
return 0;
|
||||
}
|
||||
--- a/net/8021q/vlanproc.c
|
||||
+++ b/net/8021q/vlanproc.c
|
||||
@@ -127,6 +127,9 @@ void vlan_proc_cleanup(struct net *net)
|
||||
{
|
||||
struct vlan_net *vn = net_generic(net, vlan_net_id);
|
||||
|
||||
+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
|
||||
+ return;
|
||||
+
|
||||
if (vn->proc_vlan_conf)
|
||||
remove_proc_entry(name_conf, vn->proc_vlan_dir);
|
||||
|
||||
@@ -146,6 +149,9 @@ int __net_init vlan_proc_init(struct net
|
||||
{
|
||||
struct vlan_net *vn = net_generic(net, vlan_net_id);
|
||||
|
||||
+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
|
||||
+ return 0;
|
||||
+
|
||||
vn->proc_vlan_dir = proc_net_mkdir(net, name_root, net->proc_net);
|
||||
if (!vn->proc_vlan_dir)
|
||||
goto err;
|
||||
--- a/net/core/dev.c
|
||||
+++ b/net/core/dev.c
|
||||
@@ -4478,9 +4478,11 @@ static int __net_init dev_proc_net_init(
|
||||
|
||||
if (!proc_net_fops_create(net, "dev", S_IRUGO, &dev_seq_fops))
|
||||
goto out;
|
||||
- if (!proc_net_fops_create(net, "softnet_stat", S_IRUGO, &softnet_seq_fops))
|
||||
+ if (!IS_ENABLED(CONFIG_PROC_STRIPPED) &&
|
||||
+ !proc_net_fops_create(net, "softnet_stat", S_IRUGO, &softnet_seq_fops))
|
||||
goto out_dev;
|
||||
- if (!proc_net_fops_create(net, "ptype", S_IRUGO, &ptype_seq_fops))
|
||||
+ if (!IS_ENABLED(CONFIG_PROC_STRIPPED) &&
|
||||
+ !proc_net_fops_create(net, "ptype", S_IRUGO, &ptype_seq_fops))
|
||||
goto out_softnet;
|
||||
|
||||
if (wext_proc_init(net))
|
||||
@@ -4489,9 +4491,11 @@ static int __net_init dev_proc_net_init(
|
||||
out:
|
||||
return rc;
|
||||
out_ptype:
|
||||
- proc_net_remove(net, "ptype");
|
||||
+ if (!IS_ENABLED(CONFIG_PROC_STRIPPED))
|
||||
+ proc_net_remove(net, "ptype");
|
||||
out_softnet:
|
||||
- proc_net_remove(net, "softnet_stat");
|
||||
+ if (!IS_ENABLED(CONFIG_PROC_STRIPPED))
|
||||
+ proc_net_remove(net, "softnet_stat");
|
||||
out_dev:
|
||||
proc_net_remove(net, "dev");
|
||||
goto out;
|
||||
@@ -4501,8 +4505,10 @@ static void __net_exit dev_proc_net_exit
|
||||
{
|
||||
wext_proc_exit(net);
|
||||
|
||||
- proc_net_remove(net, "ptype");
|
||||
- proc_net_remove(net, "softnet_stat");
|
||||
+ if (!IS_ENABLED(CONFIG_PROC_STRIPPED)) {
|
||||
+ proc_net_remove(net, "ptype");
|
||||
+ proc_net_remove(net, "softnet_stat");
|
||||
+ }
|
||||
proc_net_remove(net, "dev");
|
||||
}
|
||||
|
||||
--- a/net/core/sock.c
|
||||
+++ b/net/core/sock.c
|
||||
@@ -2773,6 +2773,8 @@ static __net_initdata struct pernet_oper
|
||||
|
||||
static int __init proto_init(void)
|
||||
{
|
||||
+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
|
||||
+ return 0;
|
||||
return register_pernet_subsys(&proto_net_ops);
|
||||
}
|
||||
|
||||
--- a/net/ipv4/fib_trie.c
|
||||
+++ b/net/ipv4/fib_trie.c
|
||||
@@ -2607,10 +2607,12 @@ static const struct file_operations fib_
|
||||
|
||||
int __net_init fib_proc_init(struct net *net)
|
||||
{
|
||||
- if (!proc_net_fops_create(net, "fib_trie", S_IRUGO, &fib_trie_fops))
|
||||
+ if (!IS_ENABLED(CONFIG_PROC_STRIPPED) &&
|
||||
+ !proc_net_fops_create(net, "fib_trie", S_IRUGO, &fib_trie_fops))
|
||||
goto out1;
|
||||
|
||||
- if (!proc_net_fops_create(net, "fib_triestat", S_IRUGO,
|
||||
+ if (!IS_ENABLED(CONFIG_PROC_STRIPPED) &&
|
||||
+ !proc_net_fops_create(net, "fib_triestat", S_IRUGO,
|
||||
&fib_triestat_fops))
|
||||
goto out2;
|
||||
|
||||
@@ -2629,8 +2631,10 @@ out1:
|
||||
|
||||
void __net_exit fib_proc_exit(struct net *net)
|
||||
{
|
||||
- proc_net_remove(net, "fib_trie");
|
||||
- proc_net_remove(net, "fib_triestat");
|
||||
+ if (!IS_ENABLED(CONFIG_PROC_STRIPPED)) {
|
||||
+ proc_net_remove(net, "fib_trie");
|
||||
+ proc_net_remove(net, "fib_triestat");
|
||||
+ }
|
||||
proc_net_remove(net, "route");
|
||||
}
|
||||
|
||||
--- a/net/ipv4/igmp.c
|
||||
+++ b/net/ipv4/igmp.c
|
||||
@@ -2673,6 +2673,8 @@ static struct pernet_operations igmp_net
|
||||
|
||||
int __init igmp_mc_proc_init(void)
|
||||
{
|
||||
+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
|
||||
+ return 0;
|
||||
return register_pernet_subsys(&igmp_net_ops);
|
||||
}
|
||||
#endif
|
||||
--- a/net/ipv4/ipmr.c
|
||||
+++ b/net/ipv4/ipmr.c
|
||||
@@ -70,6 +70,10 @@
|
||||
#define CONFIG_IP_PIMSM 1
|
||||
#endif
|
||||
|
||||
+#ifdef CONFIG_PROC_STRIPPED
|
||||
+#undef CONFIG_PROC_FS
|
||||
+#endif
|
||||
+
|
||||
struct mr_table {
|
||||
struct list_head list;
|
||||
#ifdef CONFIG_NET_NS
|
||||
--- a/net/ipv4/proc.c
|
||||
+++ b/net/ipv4/proc.c
|
||||
@@ -502,6 +502,9 @@ static __net_initdata struct pernet_oper
|
||||
|
||||
int __init ip_misc_proc_init(void)
|
||||
{
|
||||
+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
|
||||
+ return 0;
|
||||
+
|
||||
return register_pernet_subsys(&ip_proc_ops);
|
||||
}
|
||||
|
||||
--- a/net/ipv4/route.c
|
||||
+++ b/net/ipv4/route.c
|
||||
@@ -427,6 +427,9 @@ static struct pernet_operations ip_rt_pr
|
||||
|
||||
static int __init ip_rt_proc_init(void)
|
||||
{
|
||||
+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
|
||||
+ return 0;
|
||||
+
|
||||
return register_pernet_subsys(&ip_rt_proc_ops);
|
||||
}
|
||||
|
||||
--- a/ipc/msg.c
|
||||
+++ b/ipc/msg.c
|
||||
@@ -135,6 +135,9 @@ void __init msg_init(void)
|
||||
printk(KERN_INFO "msgmni has been set to %d\n",
|
||||
init_ipc_ns.msg_ctlmni);
|
||||
|
||||
+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
|
||||
+ return;
|
||||
+
|
||||
ipc_init_proc_interface("sysvipc/msg",
|
||||
" key msqid perms cbytes qnum lspid lrpid uid gid cuid cgid stime rtime ctime\n",
|
||||
IPC_MSG_IDS, sysvipc_msg_proc_show);
|
||||
--- a/ipc/sem.c
|
||||
+++ b/ipc/sem.c
|
||||
@@ -185,6 +185,8 @@ void sem_exit_ns(struct ipc_namespace *n
|
||||
void __init sem_init (void)
|
||||
{
|
||||
sem_init_ns(&init_ipc_ns);
|
||||
+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
|
||||
+ return;
|
||||
ipc_init_proc_interface("sysvipc/sem",
|
||||
" key semid perms nsems uid gid cuid cgid otime ctime\n",
|
||||
IPC_SEM_IDS, sysvipc_sem_proc_show);
|
||||
--- a/ipc/shm.c
|
||||
+++ b/ipc/shm.c
|
||||
@@ -115,6 +115,8 @@ pure_initcall(ipc_ns_init);
|
||||
|
||||
void __init shm_init (void)
|
||||
{
|
||||
+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
|
||||
+ return;
|
||||
ipc_init_proc_interface("sysvipc/shm",
|
||||
#if BITS_PER_LONG <= 32
|
||||
" key shmid perms size cpid lpid nattch uid gid cuid cgid atime dtime ctime rss swap\n",
|
||||
--- a/ipc/util.c
|
||||
+++ b/ipc/util.c
|
||||
@@ -148,6 +148,9 @@ void __init ipc_init_proc_interface(cons
|
||||
struct proc_dir_entry *pde;
|
||||
struct ipc_proc_iface *iface;
|
||||
|
||||
+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
|
||||
+ return;
|
||||
+
|
||||
iface = kmalloc(sizeof(*iface), GFP_KERNEL);
|
||||
if (!iface)
|
||||
return;
|
94
target/linux/generic/patches-3.7/903-debloat_direct_io.patch
Normal file
94
target/linux/generic/patches-3.7/903-debloat_direct_io.patch
Normal file
@ -0,0 +1,94 @@
|
||||
--- a/fs/Kconfig
|
||||
+++ b/fs/Kconfig
|
||||
@@ -62,6 +62,11 @@ config FILE_LOCKING
|
||||
for filesystems like NFS and for the flock() system
|
||||
call. Disabling this option saves about 11k.
|
||||
|
||||
+config DIRECT_IO
|
||||
+ bool "Enable O_DIRECT support" if EXPERT
|
||||
+ depends on BLOCK
|
||||
+ default y
|
||||
+
|
||||
source "fs/notify/Kconfig"
|
||||
|
||||
source "fs/quota/Kconfig"
|
||||
--- a/fs/Makefile
|
||||
+++ b/fs/Makefile
|
||||
@@ -14,7 +14,8 @@ obj-y := open.o read_write.o file_table.
|
||||
stack.o fs_struct.o statfs.o
|
||||
|
||||
ifeq ($(CONFIG_BLOCK),y)
|
||||
-obj-y += buffer.o bio.o block_dev.o direct-io.o mpage.o ioprio.o
|
||||
+obj-y += buffer.o bio.o block_dev.o mpage.o ioprio.o
|
||||
+obj-$(CONFIG_DIRECT_IO) += direct-io.o
|
||||
else
|
||||
obj-y += no-block.o
|
||||
endif
|
||||
--- a/include/linux/fs.h
|
||||
+++ b/include/linux/fs.h
|
||||
@@ -2444,20 +2444,36 @@ enum {
|
||||
DIO_SKIP_HOLES = 0x02,
|
||||
};
|
||||
|
||||
+#ifdef CONFIG_DIRECT_IO
|
||||
void dio_end_io(struct bio *bio, int error);
|
||||
|
||||
ssize_t __blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
|
||||
struct block_device *bdev, const struct iovec *iov, loff_t offset,
|
||||
unsigned long nr_segs, get_block_t get_block, dio_iodone_t end_io,
|
||||
dio_submit_t submit_io, int flags);
|
||||
+#else
|
||||
+static inline void dio_end_io(struct bio *bio, int error)
|
||||
+{
|
||||
+}
|
||||
+static inline ssize_t __blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
|
||||
+ struct block_device *bdev, const struct iovec *iov, loff_t offset,
|
||||
+ unsigned long nr_segs, get_block_t get_block, dio_iodone_t end_io,
|
||||
+ dio_submit_t submit_io, int flags)
|
||||
+{
|
||||
+ return -EOPNOTSUPP;
|
||||
+}
|
||||
+#endif
|
||||
+
|
||||
|
||||
static inline ssize_t blockdev_direct_IO(int rw, struct kiocb *iocb,
|
||||
struct inode *inode, const struct iovec *iov, loff_t offset,
|
||||
unsigned long nr_segs, get_block_t get_block)
|
||||
{
|
||||
+#ifdef CONFIG_DIRECT_IO
|
||||
return __blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
|
||||
offset, nr_segs, get_block, NULL, NULL,
|
||||
DIO_LOCKING | DIO_SKIP_HOLES);
|
||||
+#endif
|
||||
}
|
||||
#endif
|
||||
|
||||
--- a/fs/fcntl.c
|
||||
+++ b/fs/fcntl.c
|
||||
@@ -51,8 +51,10 @@ static int setfl(int fd, struct file * f
|
||||
arg |= O_NONBLOCK;
|
||||
|
||||
if (arg & O_DIRECT) {
|
||||
+#ifdef CONFIG_DIRECT_IO
|
||||
if (!filp->f_mapping || !filp->f_mapping->a_ops ||
|
||||
!filp->f_mapping->a_ops->direct_IO)
|
||||
+#endif
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
--- a/fs/open.c
|
||||
+++ b/fs/open.c
|
||||
@@ -630,9 +630,12 @@ int open_check_o_direct(struct file *f)
|
||||
{
|
||||
/* NB: we're sure to have correct a_ops only after f_op->open */
|
||||
if (f->f_flags & O_DIRECT) {
|
||||
+#ifdef CONFIG_DIRECT_IO
|
||||
if (!f->f_mapping->a_ops ||
|
||||
((!f->f_mapping->a_ops->direct_IO) &&
|
||||
- (!f->f_mapping->a_ops->get_xip_mem))) {
|
||||
+ (!f->f_mapping->a_ops->get_xip_mem)))
|
||||
+#endif
|
||||
+ {
|
||||
return -EINVAL;
|
||||
}
|
||||
}
|
Loading…
Reference in New Issue
Block a user