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2006-10-04[S390] Remove open-coded mem_map usage.Heiko Carstens
Use page_to_phys and pfn_to_page to avoid open-coded mem_map usage. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2006-10-04[S390] Have s390 use add_active_range() and free_area_init_nodes.Heiko Carstens
Size zones and holes in an architecture independent manner for s390. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2006-10-04[S390] Remove crept in whitespace from head*.S again.Heiko Carstens
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2006-10-04[S390] incorrect placement of include.Martin Schwidefsky
The include of linux/smp.h needs to be done before the #if that checks for the compiler version. Seems like fallout from the inline assembly cleanup patch vs. the directed yield patch. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-10-04[S390] Wire up sys_getcpu system call.Heiko Carstens
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2006-10-04[S390] zcrypt device registration/unregistration race.Ralph Wuerthner
Fix a race condition during AP device registration and unregistration. Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-10-04[S390] Add timeouts during sense PGID, path verification and disband PGID.Cornelia Huck
While the machine owns us an interrupt in these cases (and we should get one), reality isn't always like that... Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-10-04[S390] user-copy optimization fallout.Martin Schwidefsky
Fix new restore_sigregs function. It copies the user space copy of the old psw without correcting the psw.mask and the psw.addr high order bit. While we are at it, simplify save_sigregs a bit. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-10-04[S390] update default configurationMartin Schwidefsky
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-10-04Merge branch 'for-2.6.19' of git://brick.kernel.dk/data/git/linux-2.6-blockLinus Torvalds
* 'for-2.6.19' of git://brick.kernel.dk/data/git/linux-2.6-block: [PATCH] Document bi_sector and sector_t [PATCH] helper function for retrieving scsi_cmd given host based block layer tag
2006-10-04Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linusLinus Torvalds
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: [MIPS] Remove remaining reference to ite_gpio.h from Kbuild [MIPS] PNX8550 fixups
2006-10-04[PATCH] Document bi_sector and sector_tRoger Gammans
Signed-Off-By: Roger Gammans <rgammans@computer-surgery.co.uk> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2006-10-04[PATCH] helper function for retrieving scsi_cmd given host based block layer tagDavid C Somayajulu
This was necessitated by the need for a function to get back to a scsi_cmnd, when an hba the posts its (corresponding) completion interrupt with a block layer tag as its reference. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: David Somayajulu <david.somayajulu@qlogic.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2006-10-04Merge master.kernel.org:/pub/scm/linux/kernel/git/mchehab/v4l-dvbLinus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/mchehab/v4l-dvb: V4L/DVB (4712): Fix warning when compiling on x86_i64 V4L/DVB (4711): Radio: No need to return void V4L/DVB (4708): Add tveeprom support for Philips FM1236/FM1216ME MK5 V4L/DVB (4707): 4linux: complete conversion to hotplug safe PCI API V4L/DVB (4706): Do not enable VIDEO_V4L2 unconditionally V4L/DVB (4704): SAA713x: fixed compile warning in SECAM fixup V4L/DVB (4703): Add support for the ASUS EUROPA2 OEM board V4L/DVB (4702): Fix: set antenna input for DVB-T for Asus P7131 Dual hybrid V4L/DVB (4701): Saa713x audio fixes V4L/DVB (4676a): Remove Kconfig item for DiB7000M support
2006-10-04[PATCH] atmel_serial: Fix roundoff error in atmel_console_get_optionsHaavard Skinnemoen
The atmel_console_get_options() function initializes the baud, parity and bits settings from the actual hardware setup, in case it has been initialized by a e.g. boot loader. The baud rate, however, is not necessarily exactly equal to one of the standard baud rates (115200, etc.) This means that the baud rate calculated by this function may be slightly higher or slightly lower than one of the standard baud rates. If the baud rate is slightly lower than the target, this causes problems when uart_set_option() tries to match the detected baud rate against the standard baud rate, as it will always select a baud rate that is lower or equal to the target rate. For example if the detected baud rate is slightly lower than 115200, usart_set_options() will select 57600. This patch fixes the problem by subtracting 1 from the value in BRGR when calculating the baud rate. The detected baud rate will thus always be higher than the nearest standard baud rate, and uart_set_options() will end up doing the right thing. Tested on ATSTK1000 and AT91RM9200-EK boards. Both are broken without this patch. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Acked-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04[PATCH] AVR32: Allow renumbering of serial devicesHaavard Skinnemoen
Allow the board to remap actual USART peripheral devices to serial devices by calling at32_map_usart(hw_id, serial_line). This ensures that even though ATSTK1002 uses USART1 as the first serial port, it will still have a ttyS0 device. This also adds a board-specific early setup hook and moves the at32_setup_serial_console() call there from the platform code. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04[PATCH] atmel_serial: Support AVR32Haavard Skinnemoen
Make CONFIG_SERIAL_ATMEL selectable on AVR32 and #ifdef out some ARM- specific code in the driver. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Acked-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04[PATCH] atmel_serial: Pass fixed register mappings through platform_dataHaavard Skinnemoen
In order to initialize the serial console early, the atmel_serial driver had to do a hack where it compared the physical address of the port with an address known to be permanently mapped, and used it as a virtual address. This got around the limitation that ioremap() isn't always available when the console is being initalized. This patch removes that hack and replaces it with a new "regs" field in struct atmel_uart_data that the board-specific code can initialize to a fixed virtual mapping for platform devices where this is possible. It also initializes the DBGU's regs field with the address the driver used to check against. On AVR32, the "regs" field is initialized from the physical base address when this it can be accessed through a permanently 1:1 mapped segment, i.e. the P4 segment. If regs is NULL, the console initialization is delayed until the "real" driver is up and running and ioremap() can be used. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Acked-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04[PATCH] atmel_serial: Rename at91_register_uart_fnsHaavard Skinnemoen
Rename at91_register_uart_fns and associated structs and variables to make it consistent with the atmel_ prefix used by the rest of the driver. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Acked-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04[PATCH] serial: Rename PORT_AT91 -> PORT_ATMELHaavard Skinnemoen
The at91_serial driver can be used with both AT32 and AT91 devices from Atmel and has therefore been renamed atmel_serial. The only thing left is to rename PORT_AT91 PORT_ATMEL. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Acked-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04[PATCH] at91_serial -> atmel_serial: Internal namesHaavard Skinnemoen
Prefix all internal functions and variables with atmel_ instead of at91_. The at91_register_uart_fns() stuff is left as is since I can't find any actual users of it. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Acked-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04[PATCH] at91_serial -> atmel_serial: Public definitionsHaavard Skinnemoen
Rename the following public definitions: * AT91_NR_UART -> ATMEL_MAX_UART * struct at91_uart_data -> struct atmel_uart_data * at91_default_console_device -> atmel_default_console_device Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Acked-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04[PATCH] at91_serial -> atmel_serial: Platform device nameHaavard Skinnemoen
Rename the "at91_usart" platform driver "atmel_usart" and update platform devices accordingly. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Acked-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04[PATCH] at91_serial -> atmel_serial: Kconfig symbolsHaavard Skinnemoen
Rename the following Kconfig symbols: * CONFIG_SERIAL_AT91 -> CONFIG_SERIAL_ATMEL * CONFIG_SERIAL_AT91_CONSOLE -> CONFIG_SERIAL_ATMEL_CONSOLE * CONFIG_SERIAL_AT91_TTYAT -> CONFIG_SERIAL_ATMEL_TTYAT Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Acked-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04[PATCH] at91_serial -> atmel_serial: at91_serial.cHaavard Skinnemoen
Rename at91_serial.c atmel_serial.c Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Acked-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04[PATCH] at91_serial -> atmel_serial: at91rm9200_usart.hHaavard Skinnemoen
Move include/asm/arch/at91rm9200_usart.h into drivers/serial and rename it atmel_usart.h. Also delete AVR32's version of this file. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Acked-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04[MIPS] Remove remaining reference to ite_gpio.h from KbuildDavid Woodhouse
Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-10-04[MIPS] PNX8550 fixupsVitaly Wool
This patch fixes the compilation errors on PNX8550 and hard-to-track bug in interrupt handling. It also corresponds to the latest changes in PNX8550 serial driver. Signed-off-by: Vitaly Wool <vitalywool@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-10-04Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/confighLinus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/davej/configh: Remove all inclusions of <linux/config.h> Manually resolved trivial path conflicts due to removed files in the sound/oss/ subdirectory.
2006-10-04Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6: (292 commits) [GFS2] Fix endian bug for de_type [GFS2] Initialize SELinux extended attributes at inode creation time. [GFS2] Move logging code into log.c (mostly) [GFS2] Mark nlink cleared so VFS sees it happen [GFS2] Two redundant casts removed [GFS2] Remove uneeded endian conversion [GFS2] Remove duplicate sb reading code [GFS2] Mark metadata reads for blktrace [GFS2] Remove iflags.h, use FS_ [GFS2] Fix code style/indent in ops_file.c [GFS2] streamline-generic_file_-interfaces-and-filemap gfs fix [GFS2] Remove readv/writev methods and use aio_read/aio_write instead (gfs bits) [GFS2] inode-diet: Eliminate i_blksize from the inode structure [GFS2] inode_diet: Replace inode.u.generic_ip with inode.i_private (gfs) [GFS2] Fix typo in last patch [GFS2] Fix direct i/o logic in filemap.c [GFS2] Fix bug in Makefiles for lock modules [GFS2] Remove (extra) fs_subsys declaration [GFS2/DLM] Fix trailing whitespace [GFS2] Tidy up meta_io code ...
2006-10-04Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: [XFRM]: BEET mode [TCP]: Kill warning in tcp_clean_rtx_queue(). [NET_SCHED]: Remove old estimator implementation [ATM]: [zatm] always *pcr in alloc_shaper() [ATM]: [ambassador] Change the return type to reflect reality [ATM]: kmalloc to kzalloc patches for drivers/atm [TIPC]: fix printk warning [XFRM]: Clearing xfrm_policy_count[] to zero during flush is incorrect. [XFRM] STATE: Use destination address for src hash. [NEIGH]: always use hash_mask under tbl lock [UDP]: Fix MSG_PROBE crash [UDP6]: Fix flowi clobbering [NET_SCHED]: Revert "HTB: fix incorrect use of RB_EMPTY_NODE" [NETFILTER]: ebt_mark: add or/and/xor action support to mark target [NETFILTER]: ipt_REJECT: remove largely duplicate route_reverse function [NETFILTER]: Honour source routing for LVS-NAT [NETFILTER]: add type parameter to ip_route_me_harder [NETFILTER]: Kconfig: fix xt_physdev dependencies
2006-10-04Merge master.kernel.org:/pub/scm/linux/kernel/git/willy/parisc-2.6Linus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/willy/parisc-2.6: (41 commits) [PARISC] Kill wall_jiffies use [PARISC] Honour "panic_on_oops" sysctl [PARISC] Fix fs/binfmt_som.c [PARISC] Export clear_user_page to modules [PARISC] Make DMA routines more stubby [PARISC] Define pci_get_legacy_ide_irq [PARISC] Fix CONFIG_DEBUG_SPINLOCK [PARISC] Fix HPUX compat compile with current GCC [PARISC] Fix iounmap compile warning [PARISC] Add support for Quicksilver AGPGART [PARISC] Move LBA and SBA register defines to the common ropes.h [PARISC] Create shared <asm/ropes.h> header [PARISC] Stash the lba_device in its struct device drvdata [PARISC] Generalize IS_ASTRO et al to take a parisc_device like [PARISC] Pretty print the name of the lba type on kernel boot [PARISC] Remove some obsolete comments and I checked that Reo is similar to Ike [PARISC] Add hardware found in the rp8400 [PARISC] Allow nested interrupts [PARISC] Further updates to timer_interrupt() [PARISC] remove halftick and copy clocktick to local var (gcc can optimize usage) ...
2006-10-04Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpcLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (25 commits) [POWERPC] Add support for the mpc832x mds board [POWERPC] Add initial support for the e300c2 core [POWERPC] Add MPC8360EMDS default dts file [POWERPC] Add MPC8360EMDS board support [POWERPC] Add QUICC Engine (QE) infrastructure [POWERPC] Add QE device tree node definition [POWERPC] Don't try to just continue if xmon has no input device [POWERPC] Fix a printk in pseries_mpic_init_IRQ [POWERPC] Get default baud rate in udbg_scc [POWERPC] Fix zImage.coff on oldworld PowerMac [POWERPC] Fix xmon=off and cleanup xmon initialisation [POWERPC] Cleanup include/asm-powerpc/xmon.h [POWERPC] Update swim3 printk after blkdev.h change [POWERPC] Cell interrupt rework POWERPC: mpc82xx merge: board-specific/platform stuff(resend) POWERPC: 8272ads merge to powerpc: common stuff POWERPC: Added devicetree for mpc8272ads board [POWERPC] iSeries has no legacy I/O [POWERPC] implement BEGIN/END_FW_FTR_SECTION [POWERPC] iSeries does not need pcibios_fixup_resources ...
2006-10-04Merge branch 'audit.b32' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current * 'audit.b32' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current: [PATCH] message types updated [PATCH] name_count array overrun [PATCH] PPID filtering fix [PATCH] arch filter lists with < or > should not be accepted
2006-10-04[PATCH] pata: teach ali about rev C8, keep pcmcia driver in syncAlan Cox
This fixes support for rev c8 of the ALi/ULi PATA, and keeps pcmcia in sync so ide_cs and pata_pcmcia are interchangable, both are only changes to constants. Right now rev 0xC8 and higher don't work with libata but 0xc8 is in the field now. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04[PATCH] RTC: build fixesJeff Garzik
Fix obvious build breakage revealed by 'make allyesconfig' in current -git. Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04Merge branch 'upstream-linus' of ↵Linus Torvalds
master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev * 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev: [libata] pata_artop: kill gcc warning [PATCH] libata: turn off NCQ if queue depth is adjusted to 1 [PATCH] libata: cosmetic changes to constants [libata] DocBook minor updates, fixes [libata] PCI ID table cleanup in various drivers [libata] Print out Status register, if a BSY-sleep takes too long [libata] init probe_ent->private_data in a common location [libata] minor PCI IDE probe fixes and cleanups [libata] Use new PCI_VDEVICE() macro to dramatically shorten ID lists [PATCH] Fix reference of uninitialised memory in ata_device_add()
2006-10-04[PATCH] git-powerpc: wrapper: don't require execute permissionsAndrew Morton
If you lose the x bit (eg: by using patch(1)), powerpc won't build. Be defensive about it... Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04[PATCH] kill sound/oss/*_syms.cAdrian Bunk
Move all EXPORT_SYMBOL's from sound/oss/*_syms.c to the files with the actual functions. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04[PATCH] The scheduled removal of some OSS driversAdrian Bunk
This patch contains the scheduled removal of OSS drivers that: - have ALSA drivers for the same hardware without known regressions and - whose Kconfig options have been removed in 2.6.17. [michal.k.k.piotrowski@gmail.com: build fix] Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Michal Piotrowski <michal.k.k.piotrowski@gmail.com> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04[PATCH] RCU: CREDITS and MAINTAINERSJosh Triplett
Add MAINTAINERS entry for Read-Copy Update (RCU), listing Dipankar Sarma as maintainer, and giving the URL for Paul McKenney's RCU site. Add MAINTAINERS entry for rcutorture, listing myself as maintainer. Add CREDITS entries for developers of RCU, RCU variants, and rcutorture. Use Paul McKenney's preferred email address in include/linux/rcupdate.h . Signed-off-by: Josh Triplett <josh@freedesktop.org> Cc: Paul McKenney <paulmck@us.ibm.com> Cc: Dipankar Sarma <dipankar@in.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04[PATCH] rcu: simplify/improve batch tuningOleg Nesterov
Kill a hard-to-calculate 'rsinterval' boot parameter and per-cpu rcu_data.last_rs_qlen. Instead, it adds adds a flag rcu_ctrlblk.signaled, which records the fact that one of CPUs has sent a resched IPI since the last rcu_start_batch(). Roughly speaking, we need two rcu_start_batch()s in order to move callbacks from ->nxtlist to ->donelist. This means that when ->qlen exceeds qhimark and continues to grow, we should send a resched IPI, and then do it again after we gone through a quiescent state. On the other hand, if it was already sent, we don't need to do it again when another CPU detects overflow of the queue. Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Acked-by: Paul E. McKenney <paulmck@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04[PATCH] rcu: add sched torture type to rcutortureJosh Triplett
Implement torture testing for the "sched" variant of RCU, which uses preempt_disable, preempt_enable, and synchronize_sched. Signed-off-by: Josh Triplett <josh@freedesktop.org> Acked-by: Paul E. McKenney <paulmck@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04[PATCH] rcu: add rcu_bh_sync torture type to rcutortureJosh Triplett
Use the newly-generic synchronous deferred free function to implement torture testing for rcu_bh using synchronize_rcu_bh rather than the asynchronous call_rcu_bh. Signed-off-by: Josh Triplett <josh@freedesktop.org> Acked-by: Paul E. McKenney <paulmck@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04[PATCH] rcu: add rcu_sync torture type to rcutortureJosh Triplett
Use the newly-generic synchronous deferred free function to implement torture testing for RCU using synchronize_rcu rather than the asynchronous call_rcu. Signed-off-by: Josh Triplett <josh@freedesktop.org> Acked-by: Paul E. McKenney <paulmck@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04[PATCH] rcu: refactor srcu_torture_deferred_free to work for any implementationJosh Triplett
Make srcu_torture_deferred_free use cur_ops->sync() so it will work for any implementation. Move and rename it in preparation for use in the ops of other implementations. Signed-off-by: Josh Triplett <josh@freedesktop.org> Acked-by: Paul E. McKenney <paulmck@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04[PATCH] RCU: add fake writers to rcutortureJosh Triplett
rcutorture currently has one writer and an arbitrary number of readers. To better exercise some of the code paths in RCU implementations, add fake writer threads which call the synchronize function for the RCU variant in a loop, with a delay between calls to arrange for different numbers of writers running in parallel. [bunk@stusta.de: cleanup] Acked-by: Paul McKenney <paulmck@us.ibm.com> Cc: Dipkanar Sarma <dipankar@in.ibm.com> Signed-off-by: Josh Triplett <josh@freedesktop.org> Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04[PATCH] rcu: Fix sign bug making rcu_random always return the same sequenceJosh Triplett
rcu_random uses a counter rrs_count to occasionally mix data from get_random_bytes into the state of its pseudorandom generator. However, the rrs_counter gets declared as an unsigned long, and rcu_random checks for --rrs_count < 0, so this code will never mix any real random data into the state, and will thus always return the same sequence of random numbers. Also, change the return value of rcu_random from long to unsigned long, to avoid potential issues caused by the use of the % operator, which can return negative values for negative left operands. Signed-off-by: Josh Triplett <josh@freedesktop.org> Acked-by: Paul E. McKenney <paulmck@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04[PATCH] rcu: Avoid kthread_stop on invalid pointer if rcutorture reader ↵Josh Triplett
startup fails rcu_torture_init kmallocs the array of reader threads, then creates each one with kthread_run, cleaning up with rcu_torture_cleanup if this fails. rcu_torture_cleanup calls kthread_stop on any non-NULL pointer in the array; however, any readers after the one that failed to start up will have invalid pointers, not null pointers. Avoid this by using kzalloc instead. Signed-off-by: Josh Triplett <josh@freedesktop.org> Acked-by: Paul E. McKenney <paulmck@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04[PATCH] rcu: Mention rcu_bh in description of rcutorture's torture_type ↵Josh Triplett
parameter The comment for rcutorture's torture_type parameter only lists the RCU variants rcu and srcu, but not rcu_bh; add rcu_bh to the list. Signed-off-by: Josh Triplett <josh@freedesktop.org> Acked-by: Paul E. McKenney <paulmck@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>