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* Merge branch 'for-linus' of ↵Linus Torvalds2010-05-20
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (44 commits) vlynq: make whole Kconfig-menu dependant on architecture add descriptive comment for TIF_MEMDIE task flag declaration. EEPROM: max6875: Header file cleanup EEPROM: 93cx6: Header file cleanup EEPROM: Header file cleanup agp: use NULL instead of 0 when pointer is needed rtc-v3020: make bitfield unsigned PCI: make bitfield unsigned jbd2: use NULL instead of 0 when pointer is needed cciss: fix shadows sparse warning doc: inode uses a mutex instead of a semaphore. uml: i386: Avoid redefinition of NR_syscalls fix "seperate" typos in comments cocbalt_lcdfb: correct sections doc: Change urls for sparse Powerpc: wii: Fix typo in comment i2o: cleanup some exit paths Documentation/: it's -> its where appropriate UML: Fix compiler warning due to missing task_struct declaration UML: add kernel.h include to signal.c ...
| * EEPROM: max6875: Header file cleanupArce, Abraham2010-05-14
| | | | | | | | | | | | | | | | Change max6875.c header file to format as in conventions Signed-off-by: Abraham Arce <x0066660@ti.com> Acked-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
| * EEPROM: 93cx6: Header file cleanupArce, Abraham2010-05-14
| | | | | | | | | | | | | | | | Change eeprom_93cx6.c header file to format as in conventions Signed-off-by: Abraham Arce <x0066660@ti.com> Acked-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
| * EEPROM: Header file cleanupArce, Abraham2010-05-14
| | | | | | | | | | | | | | | | | | Change eeprom.c header file to format as in conventions Signed-off-by: Abraham Arce <x0066660@ti.com> Acked-by: Jean Delvare <khali@linux-fr.org> Acked-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* | Modify the VMware balloon driver for the new x86_hyper APIH. Peter Anvin2010-05-09
| | | | | | | | | | | | | | | | | | | | | | | | Modify the VMware balloon driver to match the new x86_hyper API. Signed-off-by: H. Peter Anvin <hpa@zytor.com> Cc: Greg KH <greg@kroah.com> Cc: Hank Janssen <hjanssen@microsoft.com> Cc: Alok Kataria <akataria@vmware.com> Cc: Ky Srinivasan <ksrinivasan@novell.com> Cc: Dmitry Torokhov <dtor@vmware.com> LKML-Reference: <4BE49778.6060800@zytor.com>
* | VMware Balloon driverDmitry Torokhov2010-04-24
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a standalone version of VMware Balloon driver. Ballooning is a technique that allows hypervisor dynamically limit the amount of memory available to the guest (with guest cooperation). In the overcommit scenario, when hypervisor set detects that it needs to shuffle some memory, it instructs the driver to allocate certain number of pages, and the underlying memory gets returned to the hypervisor. Later hypervisor may return memory to the guest by reattaching memory to the pageframes and instructing the driver to "deflate" balloon. We are submitting a standalone driver because KVM maintainer (Avi Kivity) expressed opinion (rightly) that our transport does not fit well into virtqueue paradigm and thus it does not make much sense to integrate with virtio. There were also some concerns whether current ballooning technique is the right thing. If there appears a better framework to achieve this we are prepared to evaluate and switch to using it, but in the meantime we'd like to get this driver upstream. We want to get the driver accepted in distributions so that users do not have to deal with an out-of-tree module and many distributions have "upstream first" requirement. The driver has been shipping for a number of years and users running on VMware platform will have it installed as part of VMware Tools even if it will not come from a distribution, thus there should not be additional risk in pulling the driver into mainline. The driver will only activate if host is VMware so everyone else should not be affected at all. Signed-off-by: Dmitry Torokhov <dtor@vmware.com> Cc: Avi Kivity <avi@redhat.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'master' into export-slabhTejun Heo2010-04-04
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| * kgdbts,sh: Add in breakpoint pc offset for superhJason Wessel2010-04-02
| | | | | | | | | | | | | | | | The kgdb test suite mimics the behavior of gdb. For the sh architecture the pc must be decremented by 2 for software breakpoint. Signed-off-by: Jason Wessel <jason.wessel@windriver.com> Acked-by: Paul Mundt <lethal@linux-sh.org>
* | include cleanup: Update gfp.h and slab.h includes to prepare for breaking ↵Tejun Heo2010-03-30
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
* c2port: fix device_create() return value checkJani Nikula2010-03-24
| | | | | | | | | | Use IS_ERR() instead of comparing to NULL. [akpm@linux-foundation.org: preserve the error code] Signed-off-by: Jani Nikula <ext-jani.1.nikula@nokia.com> Cc: Vegard Nossum <vegard.nossum@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* init dynamic bin_attribute structuresWolfram Sang2010-03-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 6992f5334995af474c2b58d010d08bc597f0f2fe ("sysfs: Use one lockdep class per sysfs attribute.") introduced this requirement. First, at25 was fixed manually. Then, other occurences were found with coccinelle and the following semantic patch. Results were reviewed and fixed up: @ init @ identifier struct_name, bin; @@ struct struct_name { ... struct bin_attribute bin; ... }; @ main extends init @ expression E; statement S; identifier name, err; @@ ( struct struct_name *name; | - struct struct_name *name = NULL; + struct struct_name *name; ) ... ( sysfs_bin_attr_init(&name->bin); | + sysfs_bin_attr_init(&name->bin); if (sysfs_create_bin_file(E, &name->bin)) S | + sysfs_bin_attr_init(&name->bin); err = sysfs_create_bin_file(E, &name->bin); ) Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Cc: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* at24: Init dynamic bin_attribute structuresWolfram Sang2010-03-13
| | | | | | | | | Commit 6992f5334995af474c2b58d010d08bc597f0f2fe introduced this requirement. Reported-by: Albrecht Dress <albrecht.dress@arcor.de> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
* tsl2550: Move from i2c/chips to miscJean Delvare2010-03-13
| | | | | | | | Move the last remaining driver from i2c/chips to misc. Good ridance! Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Wolfram Sang <w.sang@pengutronix.de> Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
* sgi-gru: use for_each_set_bit()Akinobu Mita2010-03-12
| | | | | | | | | Replace open-coded loop with for_each_set_bit(). Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* driver core: Convert some drivers to CLASS_ATTR_STRINGAndi Kleen2010-03-07
| | | | | | | | | | Convert some drivers who export a single string as class attribute to the new class_attr_string functions. This removes redundant code all over. Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* driver-core: Add attribute argument to class_attribute show/storeAndi Kleen2010-03-07
| | | | | | | | | | | | | | | | | | | | Passing the attribute to the low level IO functions allows all kinds of cleanups, by sharing low level IO code without requiring an own function for every piece of data. Also drivers can extend the attributes with own data fields and use that in the low level function. This makes the class attributes the same as sysdev_class attributes and plain attributes. This will allow further cleanups in drivers. Full tree sweep converting all users. Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* lkdtm: add debugfs access and loosen KPROBE tiesSimon Kagstrom2010-03-06
| | | | | | | | | | | | | | | | | | | | | | | Add adds a debugfs interface and additional failure modes to LKDTM to provide similar functionality to the provoke-crash driver submitted here: http://lwn.net/Articles/371208/ Crashes can now be induced either through module parameters (as before) or through the debugfs interface as in provoke-crash. The patch also provides a new "direct" interface, where KPROBES are not used, i.e., the crash is invoked directly upon write to the debugfs file. When built without KPROBES configured, only this mode is available. Signed-off-by: Simon Kagstrom <simon.kagstrom@netinsight.net> Cc: M. Mohan Kumar <mohan@in.ibm.com> Cc: Americo Wang <xiyou.wangcong@gmail.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: "Eric W. Biederman" <ebiederm@xmission.com>, Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/misc/iwmc3200top/main.c: eliminate useless codeJulia Lawall2010-03-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The variable priv is initialized twice to the same (side effect-free) expression. Drop one initialization. A simplified version of the semantic match that finds this problem is: (http://coccinelle.lip6.fr/) // <smpl> @forall@ idexpression *x; identifier f!=ERR_PTR; @@ x = f(...) ... when != x ( x = f(...,<+...x...+>,...) | * x = f(...) ) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Cc: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* MFGPT: move clocksource menuRandy Dunlap2010-03-06
| | | | | | | | | | | Move the CS5535 MFGPT hrtimer kconfig option to be with the other MFGPT options. This makes it easier to find and also removes it from the main "Device Drivers" menu, where it should not have been. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Acked-by: Andres Salomon <dilinger@collabora.co.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* bitops: rename for_each_bit() to for_each_set_bit()Akinobu Mita2010-03-06
| | | | | | | | | | | | | | | | | | | | Rename for_each_bit to for_each_set_bit in the kernel source tree. To permit for_each_clear_bit(), should that ever be added. The patch includes a macro to map the old for_each_bit() onto the new for_each_set_bit(). This is a (very) temporary thing to ease the migration. [akpm@linux-foundation.org: add temporary for_each_bit()] Suggested-by: Alexey Dobriyan <adobriyan@gmail.com> Suggested-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Russell King <rmk@arm.linux.org.uk> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Artem Bityutskiy <dedekind@infradead.org> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* iwmc3200top: simplify imwct_txTomas Winkler2009-12-23
| | | | | | | | | 1. remove address argument since we use same address IWMC_SDIO_DATA_ADDR in all cases 2. add __iwmct_tx - non locking tx function for already locked contexts Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* iwmc3200top: cleanup log messagesTomas Winkler2009-12-23
| | | | | | | | | | | 1. add TRACE level 2. use TRACE where needed to reduce the noise 3 don't INFOEX from driver 4. add DUMP level for packets dumps 5. use correct context for the log messages Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* iwmc3200top: clean up fw_downloadTomas Winkler2009-12-23
| | | | | | | | | | 1. removed redundant NULL-pointers checks in iwmct_fw_load as release_firmware and kfree are NULL pointer friendly 2. remove redundant memset of the parser since the structure is fully initialized in iwmct_fw_parser_init function Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6Linus Torvalds2009-12-17
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (40 commits) [SCSI] 3w-9xxx fix bug in sgl loading [SCSI] fcoe, libfc: adds enable/disable for fcoe interface [SCSI] libfc: reduce hold time on SCSI host lock [SCSI] libfc: remote port gets stuck in restart state without really restarting [SCSI] pm8001: misc code cleanup [SCSI] pm8001: enable read HBA SAS address from VPD [SCSI] pm8001: do not reset local sata as it will not be found if reset [SCSI] pm8001: bit set pm8001_ha->flags [SCSI] pm8001:fix potential NULL pointer dereference [SCSI] pm8001: set SSC down-spreading only to get less errors on some 6G device. [SCSI] pm8001: fix endian issues with SAS address [SCSI] pm8001: enhance error handle for IO patch [SCSI] pm8001: Fix for sata io circular lock dependency. [SCSI] hpsa: add driver for HP Smart Array controllers. [SCSI] cxgb3i: always use negative errno in case of error [SCSI] bnx2i: minor code cleanup and update driver version [SCSI] bnx2i: Task management ABORT TASK fixes [SCSI] bnx2i: update CQ arming algorith for 5771x chipsets [SCSI] bnx2i: Adjust sq_size module parametr to power of 2 only if a non-zero value is specified [SCSI] bnx2i: Add 5771E device support to bnx2i driver ...
| * [SCSI] enclosure: fix oops while iterating enclosure_status arrayJames Bottomley2009-12-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Based on patch originally by Jeff Mahoney <jeffm@suse.com> enclosure_status is expected to be a NULL terminated array of strings but isn't actually NULL terminated. When writing an invalid value to /sys/class/enclosure/.../.../status, it goes off the end of the array and Oopses. Fix by making the assumption true and adding NULL at the end. Reported-by: Artur Wojcik <artur.wojcik@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
* | cs5535: CS5535_MFGPT_DEFAULT_IRQ should depend on CS5535_MFGPTGeert Uytterhoeven2009-12-17
| | | | | | | | | | | | | | | | | | | | It doesn't make much sense to have CS5535_MFGPT_DEFAULT_IRQ show up in configs that cannot have CS5535_MFGPT. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Andres Salomon <dilinger@collabora.co.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge branch 'release' of ↵Linus Torvalds2009-12-16
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (117 commits) ACPI processor: Fix section mismatch for processor_add() ACPI: Add platform-wide _OSC support. ACPI: cleanup pci_root _OSC code. ACPI: Add a generic API for _OSC -v2 msi-wmi: depend on backlight and fix corner-cases problems msi-wmi: switch to using input sparse keymap library msi-wmi: replace one-condition switch-case with if statement msi-wmi: remove unused field 'instance' in key_entry structure msi-wmi: remove custom runtime debug implementation msi-wmi: rework init msi-wmi: remove useless includes X86 drivers: Introduce msi-wmi driver Toshiba Bluetooth Enabling driver (RFKill handler v3) ACPI: fix for lapic_timer_propagate_broadcast() acpi_pad: squish warning ACPI: dock: minor whitespace and style cleanups ACPI: dock: add struct dock_station * directly to platform device data ACPI: dock: dock_add - hoist up platform_device_register_simple() ACPI: dock: remove global 'dock_device_name' ACPI: dock: combine add|alloc_dock_dependent_device (v2) ...
| * \ Merge branch 'dell-laptop' into releaseLen Brown2009-12-15
| |\ \
| | * | dell-laptop: remove duplicate Kconfig entry under drivers/miscAlan Jenkins2009-12-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This showed up as an unselectable option when using xconfig and searching for "dell". It must been overlooked when dell-laptop was moved to drivers/platform/x86. Signed-off-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk> Signed-off-by: Len Brown <len.brown@intel.com>
* | | | gru: send cross partition interrupts using the gruJack Steiner2009-12-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | GRU Message queue instructions are used to deliver messages to other SSIs within the numalink domain. In most cases, a single GRU mesq instruction will deliver both the message AND an interrupt to notify the other SSI that a messsage is present. In some cases, however, the interrupt must be sent explicitly. To improve resilency, the GRU driver should send these explicit interrupts using the GRU to write the remote chipset register. Current code sends the interrupt using a cpu instruction to write the chipset register. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | gru: update driver version numberJack Steiner2009-12-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Update the version number of the GRU driver. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | gru: improve GRU TLB dropin statisticsJack Steiner2009-12-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Update the TLB dropin statistics kept for each GRU context. Count TLB dropins separate from the misses - some misses do not result in a TLB dropin. Some of the diagnostics need both counts. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | gru: fix GRU interrupt race at deallocateJack Steiner2009-12-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix a race where an interrupt could be received for a GRU context that has been deallocated. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | gru: add hugepage supportJack Steiner2009-12-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add support for hugepages. Easier than I originally thought. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | gru: fix bug in allocation of kernel contextsJack Steiner2009-12-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix a bug in the assignment of GRU contexts used for kernel functions. If a sleep occurs on the wait for a semaphore, the thread could switch cpus and allocate resources on the wrong blade. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | gru: update GRU structures to match latest hardware specJack Steiner2009-12-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a few new definitions for chipset MMR field names. This matches rev 0.7 of the hardware spec. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | gru: check for correct GRU chiplet assignmentJack Steiner2009-12-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Simplify the code that checks for correct assignment of GRU contexts to users. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | gru: remove stray local_irq_enableJack Steiner2009-12-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove a stray local_irq_enable() in the GRU TLB dropin code. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | gru: add symbolic names for GRU error codeJack Steiner2009-12-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use symbol names instead of numbers for error return values for the vtop functions. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | gru: fix bug in exception handlingJack Steiner2009-12-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix a GRU driver bug converting a CBR address to the context that contains the CBR. The conversion is rarely done so performance does not matter. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | gru: preload tlb for bcopy instructionsJack Steiner2009-12-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add anticipatory TLB dropins for GRU TLB misses that occur on BCOPY instructions that copy large amounts of data. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | gru: expicitly set instruction status to activeJack Steiner2009-12-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Explicitly set GRU instructions to "ACTIVE". This eliminates the need for barriers that would have been necessary to prevent reading the instruction "status" field before the GRU had actually started the instruction. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | gru: add additional GRU statisticsJack Steiner2009-12-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add additional GRU statistics & debug messages. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | gru: update irq infrastructureJack Steiner2009-12-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Update the GRU irq allocate/free functions to use the latest upstream infrastructure. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | gru: fix prefetch and speculation bugsJack Steiner2009-12-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix several bugs related to prefetch, ordering & speculation: - GRU cch_allocate() instruction causes cacheable memory to be created. Add a barriers to prevent speculation from prefetching data before it exists. - Add memory barriers before cache-flush instructions to ensure that previously stored data is included in the line flushed to memory. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | gru: check for valid vmaJack Steiner2009-12-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix bug caused by failure to allocate a GRU gts structure. The old code failed to handle the case where the vma was invalid. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | gru: add test for gru_copy_gpaJack Steiner2009-12-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Improve existing driver self-tests. Add a new debugging test to the SGI GRU driver for verifying the global GRU copy function. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | gru: add debug option for cache flushingJack Steiner2009-12-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a debug option to the SGI GRU driver for flushing GRU cache lines from memory. In theory this is not needed but it is useful for debugging. This has no use by end users. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | gru: handle failures to mmu_notifier_registerJack Steiner2009-12-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Under some conditions, mmu_notifier_register() will fail to register a mmu_notifier. Fix the GRU driver to correctly handle these failures. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | gru: support 64-bit GRU addressesJack Steiner2009-12-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Increase the maximum address supported by the SGI GRU driver to a full 64 bits. Note that GRU addresses are not always the same as socket virtual addresses. Sockets may not necessarily support the full 64 bits. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-24 07:27:56 -0500