AuxXxilium/linux_dsm_epyc7002
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613655fa39
linux_dsm_epyc7002/drivers
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Arnd Bergmann 613655fa39 drivers: 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.

These drivers do not seem to be under active
maintainance from my brief investigation. Apologies
to those maintainers that I have missed.

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>
2010-10-05 15:01:04 +02:00
..
accessibility
acpi Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 2010-09-07 16:00:17 -07:00
amba
ata libata-sff: Reenable Port Multiplier after libata-sff remodeling. 2010-09-09 22:31:55 -04:00
atm Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6 2010-08-12 09:11:31 -07:00
auxdisplay
base PM: Prevent waiting forever on asynchronous resume after failing suspend 2010-09-09 00:49:43 +02:00
block drivers: autoconvert trivial BKL users to private mutex 2010-10-05 15:01:04 +02:00
bluetooth Merge git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6 2010-08-06 12:25:06 -07:00
cdrom block: push down BKL into .open and .release 2010-08-07 18:25:34 +02:00
char drivers: autoconvert trivial BKL users to private mutex 2010-10-05 15:01:04 +02:00
clocksource
connector
cpufreq
cpuidle cpuidle: extend cpuidle and menu governor to handle dynamic states 2010-08-09 20:45:04 -07:00
crypto [S390] zcrypt: fix Kconfig dependencies 2010-08-13 10:06:54 +02:00
dca
dio
dma Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6 2010-08-12 09:11:31 -07:00
edac amd64_edac: Do not report error overflow as a separate error 2010-08-26 12:46:03 +02:00
eisa
firewire firewire: ohci: work around VIA and NEC PHY packet reception bug 2010-08-29 09:17:31 +02:00
firmware Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2010-08-14 12:34:34 -07:00
gpio gpio: sx150x: correct and refine reset-on-probe behavior 2010-09-09 18:57:24 -07:00
gpu Merge branch 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ickle/drm-intel 2010-09-10 18:19:43 -07:00
hid Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid 2010-08-18 15:29:38 -07:00
hwmon drivers: autoconvert trivial BKL users to private mutex 2010-10-05 15:01:04 +02:00
i2c Merge branch 'for-linus/i2c-2636' of git://git.fluff.org/bjdooks/linux 2010-08-14 11:57:54 -07:00
ide ide: use module_param_named rather than module_param_call 2010-08-11 23:04:39 +09:30
idle Merge branch 'idle-release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6 2010-08-15 11:17:52 -07:00
ieee1394
ieee802154
infiniband Merge branches 'cxgb3' and 'nes' into for-linus 2010-09-08 14:43:28 -07:00
input drivers: autoconvert trivial BKL users to private mutex 2010-10-05 15:01:04 +02:00
isdn Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2010-08-23 18:30:30 -07:00
leds Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6 2010-08-12 09:11:31 -07:00
lguest
macintosh mac: autoconvert trivial BKL users to private mutex 2010-09-15 21:00:47 +02:00
mca
md md: resolve confusion of MD_CHANGE_CLEAN 2010-08-30 18:06:21 +10:00
media V4L/DVB: mantis: Fix IR_CORE dependency 2010-08-24 10:42:08 -07:00
memstick memstick: fix hangs on unexpected device removal in mspro_blk 2010-08-12 08:43:31 -07:00
message scsi: autoconvert trivial BKL users to private mutex 2010-09-15 21:00:45 +02:00
mfd Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6 2010-08-12 10:01:30 -07:00
misc drivers: autoconvert trivial BKL users to private mutex 2010-10-05 15:01:04 +02:00
mmc drivers/mmc/host/imxmmc.c: adjust confusing if indentation 2010-09-09 18:57:23 -07:00
mtd mtd: autoconvert trivial BKL users to private mutex 2010-09-15 21:00:46 +02:00
net ipheth: remove incorrect devtype to WWAN 2010-09-09 21:41:59 -07:00
nubus
of of/device: Replace struct of_device with struct platform_device 2010-08-06 09:25:50 -06:00
oprofile oprofile: fix crash when accessing freed task structs 2010-08-25 09:09:09 +02:00
parisc
parport Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6 2010-08-12 09:11:31 -07:00
pci drivers: autoconvert trivial BKL users to private mutex 2010-10-05 15:01:04 +02:00
pcmcia Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6 2010-08-12 09:11:31 -07:00
platform intel_scu_ipc: fix IPC i2c write bug 2010-08-24 10:42:09 -07:00
pnp
power Merge git://git.infradead.org/battery-2.6 2010-08-12 09:58:33 -07:00
pps
ps3
rapidio
regulator regulator: Remove default DEBUG define from TPS6586x 2010-08-11 11:38:03 +01:00
rtc drivers: autoconvert trivial BKL users to private mutex 2010-10-05 15:01:04 +02:00
s390 Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block 2010-09-10 07:26:27 -07:00
sbus drivers: autoconvert trivial BKL users to private mutex 2010-10-05 15:01:04 +02:00
scsi scsi: autoconvert trivial BKL users to private mutex 2010-09-15 21:00:45 +02:00
serial serial: bfin_sport_uart: restore transmit frame sync fix 2010-09-03 17:29:04 -07:00
sfi
sh
sn
spi m68knommu: include sched.h in ColdFire/SPI driver 2010-08-18 12:44:31 +10:00
ssb Merge git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6 2010-08-06 12:25:06 -07:00
staging Staging: wlan-ng: Explicitly set some fields in cfg80211 interface 2010-09-03 17:37:16 -07:00
tc
telephony drivers: autoconvert trivial BKL users to private mutex 2010-10-05 15:01:04 +02:00
thermal
uio
usb USB: ftdi_sio: Added custom PIDs for ChamSys products 2010-09-03 17:33:41 -07:00
uwb
vhost vhost: error handling fix 2010-09-06 09:49:39 +03:00
video ARM: pxa168fb: fix section mismatch 2010-08-30 09:59:44 +08:00
virtio
vlynq
w1
watchdog drivers: autoconvert trivial BKL users to private mutex 2010-10-05 15:01:04 +02:00
xen Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2010-08-28 13:55:31 -07:00
zorro zorro: Fix reading of proc/bus/zorro/* in small chunks 2010-08-09 21:14:08 +02:00
Kconfig
Makefile