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2008-07-31[PATCH] configfs: Prevent userspace from creating new entries under ↵Louis Rilling
attaching directories process 1: process 2: configfs_mkdir("A") attach_group("A") attach_item("A") d_instantiate("A") populate_groups("A") mutex_lock("A") attach_group("A/B") attach_item("A") d_instantiate("A/B") mkdir("A/B/C") do_path_lookup("A/B/C", LOOKUP_PARENT) ok lookup_create("A/B/C") mutex_lock("A/B") ok configfs_mkdir("A/B/C") ok attach_group("A/C") attach_item("A/C") d_instantiate("A/C") populate_groups("A/C") mutex_lock("A/C") attach_group("A/C/D") attach_item("A/C/D") failure mutex_unlock("A/C") detach_groups("A/C") nothing to do mkdir("A/C/E") do_path_lookup("A/C/E", LOOKUP_PARENT) ok lookup_create("A/C/E") mutex_lock("A/C") ok configfs_mkdir("A/C/E") ok detach_item("A/C") d_delete("A/C") mutex_unlock("A") detach_groups("A") mutex_lock("A/B") detach_group("A/B") detach_groups("A/B") nothing since no _default_ group detach_item("A/B") mutex_unlock("A/B") d_delete("A/B") detach_item("A") d_delete("A") Two bugs: 1/ "A/B/C" and "A/C/E" are created, but never removed while their parent are removed in the end. The same could happen with symlink() instead of mkdir(). 2/ "A" and "A/C" inodes are not locked while detach_item() is called on them, which may probably confuse VFS. This commit fixes 1/, tagging new directories with CONFIGFS_USET_CREATING before building the inode and instantiating the dentry, and validating the whole group+default groups hierarchy in a second pass by clearing CONFIGFS_USET_CREATING. mkdir(), symlink(), lookup(), and dir_open() simply return -ENOENT if called in (or linking to) a directory tagged with CONFIGFS_USET_CREATING. This does not prevent userspace from calling stat() successfuly on such directories, but this prevents userspace from adding (children to | symlinking from/to | read/write attributes of | listing the contents of) not validated items. In other words, userspace will not interact with the subsystem on a new item until the new item creation completes correctly. It was first proposed to re-use CONFIGFS_USET_IN_MKDIR instead of a new flag CONFIGFS_USET_CREATING, but this generated conflicts when checking the target of a new symlink: a valid target directory in the middle of attaching a new user-created child item could be wrongly detected as being attached. 2/ is fixed by next commit. Signed-off-by: Louis Rilling <louis.rilling@kerlabs.com> Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2008-07-31[PATCH] configfs: Fix failing symlink() making rmdir() failLouis Rilling
On a similar pattern as mkdir() vs rmdir(), a failing symlink() may make rmdir() fail for the symlink's parent and the symlink's target as well. failing symlink() making target's rmdir() fail: process 1: process 2: symlink("A/S" -> "B") allow_link() create_link() attach to "B" links list rmdir("B") detach_prep("B") error because of new link configfs_create_link("A", "S") error (eg -ENOMEM) failing symlink() making parent's rmdir() fail: process 1: process 2: symlink("A/D/S" -> "B") allow_link() create_link() attach to "B" links list configfs_create_link("A/D", "S") make_dirent("A/D", "S") rmdir("A") detach_prep("A") detach_prep("A/D") error because of "S" create("S") error (eg -ENOMEM) We cannot use the same solution as for mkdir() vs rmdir(), since rmdir() on the target cannot wait on the i_mutex of the new symlink's parent without risking a deadlock (with other symlink() or sys_rename()). Instead we define a global mutex protecting all configfs symlinks attachment, so that rmdir() can avoid the races above. Signed-off-by: Louis Rilling <louis.rilling@kerlabs.com> Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2008-07-31[PATCH] configfs: Fix symlink() to a removing itemLouis Rilling
The rule for configfs symlinks is that symlinks always point to valid config_items, and prevent the target from being removed. However, configfs_symlink() only checks that it can grab a reference on the target item, without ensuring that it remains alive until the symlink is correctly attached. This patch makes configfs_symlink() fail whenever the target is being removed, using the CONFIGFS_USET_DROPPING flag set by configfs_detach_prep() and protected by configfs_dirent_lock. This patch introduces a similar (weird?) behavior as with mkdir failures making rmdir fail: if symlink() races with rmdir() of the parent directory (or its youngest user-created ancestor if parent is a default group) or rmdir() of the target directory, and then fails in configfs_create(), this can make the racing rmdir() fail despite the concerned directory having no user-created entry (resp. no symlink pointing to it or one of its default groups) in the end. This behavior is fixed in later patches. Signed-off-by: Louis Rilling <louis.rilling@kerlabs.com> Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2008-07-31[PATCH] configfs: Include linux/err.h in linux/configfs.hJoel Becker
We now use PTR_ERR() in the ->make_item() and ->make_group() operations. Folks including configfs.h need err.h. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2008-07-30Fix off-by-one error in iov_iter_advance()Linus Torvalds
The iov_iter_advance() function would look at the iov->iov_len entry even though it might have iterated over the whole array, and iov was pointing past the end. This would cause DEBUG_PAGEALLOC to trigger a kernel page fault if the allocation was at the end of a page, and the next page was unallocated. The quick fix is to just change the order of the tests: check that there is any iovec data left before we check the iov entry itself. Thanks to Alexey Dobriyan for finding this case, and testing the fix. Reported-and-tested-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Nick Piggin <npiggin@suse.de> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: <stable@kernel.org> [2.6.25.x, 2.6.26.x] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30romfs_readpage: don't report errors for pages beyond i_sizeLinus Torvalds
We zero-fill them like we are supposed to, and that's all fine. It's only an error if the 'romfs_copyfrom()' routine isn't able to fill the data that is supposed to be there. Most of the patch is really just re-organizing the code a bit, and using separate variables for the error value and for how much of the page we actually filled from the filesystem. Reported-and-tested-by: Chris Fester <cfester@wms.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Matt Waddel <matt.waddel@freescale.com> Cc: Greg Ungerer <gerg@snapgear.com> Signed-of-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30Merge branch 'merge' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: powerpc/mm: Lockless get_user_pages_fast() for 64-bit (v3) powerpc: Don't use the wrong thread_struct for ptrace get/set VSX regs powerpc: Fix ptrace buffer size for VSX powerpc: Correctly hookup PTRACE_GET/SETVSRREGS for 32 bit processes ide/powermac: Fix use of uninitialized pointer on media-bay powerpc: Allow non-hcall return values for lparcfg writes ipmi/powerpc: Use linux/of_{device,platform}.h instead of asm powerpc/fsl: proliferate simple-bus compatibility to soc nodes Documentation: remove old sbc8260 board specific information cpm2: Rework baud rate generators configuration to support external clocks. powerpc: rtc_cmos_setup: assign interrupts only if there is i8259 PIC cpm_uart: Add generic clock API support to set baudrates cpm_uart: Modem control lines support powerpc: implement GPIO LIB API on CPM1 Freescale SoC. cpm2: Implement GPIO LIB API on CPM2 Freescale SoC. powerpc: Fix 8xx build failure powerpc: clean up the Book-E HW watchpoint support
2008-07-30cpumask: statement expressions confuse some versions of gccStephen Rothwell
when you take the address of the result. Noticed on a sparc64 compile using a version 3.4.5 cross compiler. kernel/time/tick-common.c: In function `tick_check_new_device': kernel/time/tick-common.c:210: error: invalid lvalue in unary `&' ... Just make it a regular expression. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (47 commits) net: Make "networking" one-click deselectable. ipv6: Fix useless proc net sockstat6 removal tcp: MD5: Use MIB counter instead of warning for MD5 mismatch. pkt_sched: Fix OOPS on ingress qdisc add. niu: Fix error checking in niu_ethflow_to_class. IPv6: datagram_send_ctl() should exit immediately when an error occured mac80211: fix mesh beaconing PS3: gelic: use unsigned long for irqflags mac80211: fix cfg80211 hooks for master interface nl80211: fix dump callbacks mac80211: partially fix skb->cb use rtl8187: Improve wireless statistics for RTL8187B rtl8187: Fix for TX sequence number problem mac80211: append CONFIG_ to MAC80211_VERBOSE_PS_DEBUG in net/mac80211/tx.c. mac80211: fix sparse integer as NULL pointer warning drivers/net/wireless/iwlwifi/iwl-led.c: printk fix mac80211: return correct error return from ieee80211_wep_init mac80211: tx, use dev_kfree_skb_any for beacon_get rt2x00: Clear queue entry flags during initialization rt2x00: Force full register config after start() ...
2008-07-30x86: wrong register was used in align macroVitaly Mayatskikh
New ALIGN_DESTINATION macro has sad typo: r8d register was used instead of ecx in fixup section. This can be considered as a regression. Register ecx was also wrongly loaded with value in r8d in copy_user_nocache routine. Signed-off-by: Vitaly Mayatskikh <v.mayatskih@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30sgi-xp: setup the notify GRU message queueDean Nelson
Setup the notify GRU message queue that is used for sending user messages on UV systems. Signed-off-by: Dean Nelson <dcn@sgi.com> Cc: Jack Steiner <steiner@sgi.com> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30sgi-xp: setup the activate GRU message queueDean Nelson
Setup the activate GRU message queue that is used for partition activation and channel connection on UV systems. Signed-off-by: Dean Nelson <dcn@sgi.com> Cc: Jack Steiner <steiner@sgi.com> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30sgi-xp: cleanup naming of partition definesDean Nelson
Cleanup naming of partition defines. Signed-off-by: Dean Nelson <dcn@sgi.com> Cc: Jack Steiner <steiner@sgi.com> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30sgi-xp: move xpc_check_remote_hb() to support both SN2 and UVDean Nelson
Move xpc_check_remote_hb() so it can support both SN2 and UV. Signed-off-by: Dean Nelson <dcn@sgi.com> Cc: Jack Steiner <steiner@sgi.com> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30sgi-xp: add usage of GRU driver by xpc_remote_memcpy()Dean Nelson
Add UV support to xpc_remote_memcpy(), which involves interfacing to the GRU driver. Signed-off-by: Dean Nelson <dcn@sgi.com> Cc: Jack Steiner <steiner@sgi.com> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30sgi-xp: enable building of XPC/XPNET on x86_64Dean Nelson
Get XPC/XPNET to build on x86_64. Trying to modprobe them up on a non-UV or sn2 system will result in a -ENODEV. Signed-off-by: Dean Nelson <dcn@sgi.com> Cc: Jack Steiner <steiner@sgi.com> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30sgi-xp: add 'jiffies' to reserved page's timestamp nameDean Nelson
Rename XPC's reserved page's timestamp member to reflect the units of time involved. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30sgi-xp: use standard bitops macros and functionsDean Nelson
Change sgi-xp to use the standard bitops macros and functions instead of trying to invent its own mechanism. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30sgi-xp: eliminate '>>>' in commentsDean Nelson
Comments in /drivers/misc/sgi-xp has been using '>>>' as a means to draw attention to something that needs to be done or considered. To avoid colliding with git rejects, '>>>' will now be replaced by '!!!' to indicate something to do, and by '???' to indicate something to be considered. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30sgi-xp: add _sn2 suffix to a few variablesDean Nelson
Add an '_sn2' suffix to some variables found in xpc_sn2.c. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30sgi-xp: isolate remote copy buffer to sn2 onlyDean Nelson
Make the remote copy buffer an sn2 only item. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30sgi-xp: enable XPNET to handle more than 64 partitionsDean Nelson
Enable XPNET to support more than 64 partitions. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30sgi-xp: isolate allocation of XPC's msgqueues to sn2 onlyDean Nelson
Move the allocation of XPC's msgqueues to xpc_sn2.c. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30sgi-xp: replace AMO_t typedef by struct amoDean Nelson
Replace the AMO_t typedef by a direct reference to 'struct amo'. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30sgi-xp: separate chctl_flags from XPC's notify IRQDean Nelson
Tie current IPI references to either XPC's notify IRQ or channel control flags. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30sgi-xp: isolate additional sn2 specific codeDean Nelson
Move additional sn2 specific code into xpc_sn2.c. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30sgi-xp: isolate activate IRQ's hardware specific componentsDean Nelson
Isolate architecture specific code related to XPC's activate IRQ. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30sgi-xp: move xpc_allocate() into xpc_send()/xpc_send_notify()Dean Nelson
Move xpc_allocate() functionality into xpc_send()/xpc_send_notify() so xpc_allocate() no longer needs to be called by XPNET. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30sgi-xp: base xpc_rsvd_page's timestamp on jiffiesDean Nelson
Change XPC's reserved page timestamp to be based on jiffies. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30sgi-xp: isolate xpc_vars structure to sn2 onlyDean Nelson
Isolate the xpc_vars structure of XPC's reserved page to sn2 only. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30sgi-xp: isolate xpc_vars_part structure to sn2 onlyDean Nelson
Isolate the xpc_vars_part structure of XPC's reserved page to sn2 only. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30sgi-xp: prepare xpc_rsvd_page to work on either sn2 or uv hardwareDean Nelson
Prepare XPC's reserved page header to work for either sn2 or uv. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30sgi-xp: create a common xp_remote_memcpy() functionDean Nelson
Create a common remote memcpy function that maps to what the hardware booted supports. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30sgi-xp: support runtime selection of xp_max_npartitionsDean Nelson
Support runtime selection of the max number of partitions based on the hardware being run on. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30sgi-xp: define BYTES_PER_WORDDean Nelson
Add a BYTES_PER_WORD #define. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30sgi-xp: define xpSalError reason codeDean Nelson
Define xpSalError reason code. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30sgi-xp: define is_shub() and is_uv() macrosDean Nelson
Define the is_shub()/is_uv() macros if they've not already been defined. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30GRU Driver V3: fixes to resolve code review commentsJack Steiner
Fixes problems identified in a code review: - add comment with high level dscription of the GRU - prepend "gru_" to all global names - delete unused function - couple of trivial bug fixes [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Jack Steiner <steiner@sgi.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30GRU Driver: driver/misc Makefile & Kconfig changesJack Steiner
Driver/misc changes for 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>
2008-07-30GRU Driver: export is_uv_system(), zap_page_range() & follow_page()Jack Steiner
Exports needed by 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>
2008-07-30GRU Driver: driver makefileJack Steiner
This patch adds the GRU driver makefile 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>
2008-07-30GRU Driver: TLB flushing, MMUOPS calloutsJack Steiner
This file contains the functions for handlinf GRU TLB flushing, This includes functions to handle the MMUOPS callouts. 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>
2008-07-30GRU Driver: /proc interfacesJack Steiner
This file externalizes some GRU state & statistics to the user using the /proc file system. 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>
2008-07-30GRU Driver: resource managementJack Steiner
This file contains functions realted to managing GRU resources provided to the user. Examples include GRU context assignment, load, unload, migration, etc.. Signed-off-by: Jack Steiner <steiner@sgi.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30GRU Driver: kernel services provide by driverJack Steiner
This file contains functions for handling services provided to other kernel modules that use the GRU. 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>
2008-07-30GRU Driver: page faults & exceptionsJack Steiner
This file contains the functions that manage GRU page faults and exceptions. Signed-off-by: Jack Steiner <steiner@sgi.com> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30GRU Driver: driver initialization, file & vma opsJack Steiner
This file contains the functions for initializing the driver, handling file & vma operations and for processing IOCTL requests from the user. 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>
2008-07-30GRU Driver: kernel services header filesJack Steiner
This patch contains the header file used to export GRU services to other kernel drivers such as XPMEM or XPNET. 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>
2008-07-30GRU Driver: driver internal header filesJack Steiner
This patch contains header files internal to 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>
2008-07-30GRU Driver: GRU instructions & macrosJack Steiner
This patchs contains macros & inline functions used to issue instructions to the GRU. 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>
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