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linux-next/drivers/net/wan
Arnd Bergmann 15fd0cd9a2 net: autoconvert trivial BKL users to private mutex
All these files use the big kernel lock in a trivial
way to serialize their private file operations,
typically resulting from an earlier semi-automatic
pushdown from VFS.

None of these drivers appears to want to lock against
other code, and they all use the BKL as the top-level
lock in their file operations, meaning that there
is no lock-order inversion problem.

Consequently, we can remove the BKL completely,
replacing it with a per-file mutex in every case.
Using a scripted approach means we can avoid
typos.

file=$1
name=$2
if grep -q lock_kernel ${file} ; then
    if grep -q 'include.*linux.mutex.h' ${file} ; then
            sed -i '/include.*<linux\/smp_lock.h>/d' ${file}
    else
            sed -i 's/include.*<linux\/smp_lock.h>.*$/include <linux\/mutex.h>/g' ${file}
    fi
    sed -i ${file} \
        -e "/^#include.*linux.mutex.h/,$ {
                1,/^\(static\|int\|long\)/ {
                     /^\(static\|int\|long\)/istatic DEFINE_MUTEX(${name}_mutex);

} }"  \
    -e "s/\(un\)*lock_kernel\>[ ]*()/mutex_\1lock(\&${name}_mutex)/g" \
    -e '/[      ]*cycle_kernel_lock();/d'
else
    sed -i -e '/include.*\<smp_lock.h\>/d' ${file}  \
                -e '/cycle_kernel_lock()/d'
fi

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-12 20:21:47 -07:00
..
lmc net: trans_start cleanups 2010-05-10 05:01:31 -07:00
.gitignore
c101.c
cosa.c net: autoconvert trivial BKL users to private mutex 2010-07-12 20:21:47 -07:00
cosa.h
cycx_drv.c
cycx_main.c
cycx_x25.c X25: Use identifiers for cyclades device to x25 interface 2010-04-22 16:12:50 -07:00
dlci.c
dscc4.c net: trans_start cleanups 2010-05-10 05:01:31 -07:00
farsync.c drivers/net/wan: Use memdup_user 2010-05-31 00:24:14 -07:00
farsync.h
hd64570.c net: trans_start cleanups 2010-05-10 05:01:31 -07:00
hd64570.h drivers/net: use __packed annotation 2010-06-03 03:18:23 -07:00
hd64572.c net: trans_start cleanups 2010-05-10 05:01:31 -07:00
hd64572.h
hdlc_cisco.c drivers/net: use __packed annotation 2010-06-03 03:18:23 -07:00
hdlc_fr.c drivers/net: use __packed annotation 2010-06-03 03:18:23 -07:00
hdlc_ppp.c WAN: flush tx_queue in hdlc_ppp to prevent panic on rmmod hw_driver. 2010-04-16 15:41:03 -07:00
hdlc_raw_eth.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
hdlc_raw.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
hdlc_x25.c X25: Use identifiers for hdlc x25 device to x25 interface 2010-04-22 16:12:51 -07:00
hdlc.c
hostess_sv11.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
ixp4xx_hss.c net: trans_start cleanups 2010-05-10 05:01:31 -07:00
Kconfig
lapbether.c X25: Use identifiers for lapbether device to x25 interface 2010-04-22 16:12:50 -07:00
Makefile
n2.c
pc300_drv.c net: trans_start cleanups 2010-05-10 05:01:31 -07:00
pc300_tty.c net/various: remove trailing space in messages 2010-03-24 14:10:38 -07:00
pc300-falc-lh.h
pc300.h
pc300too.c
pci200syn.c
sbni.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
sbni.h
sdla.c drivers/net: use __packed annotation 2010-06-03 03:18:23 -07:00
sealevel.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
wanxl.c net: trans_start cleanups 2010-05-10 05:01:31 -07:00
wanxl.h
wanxlfw.inc_shipped
wanxlfw.S
x25_asy.c X25: remove duplicated #include 2010-06-04 16:14:48 -07:00
x25_asy.h
z85230.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
z85230.h