- 09 Jan, 2013 9 commits
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George Zhang authored
VMCI routing code is responsible for routing between various hosts/guests as well as routing in nested scenarios. Signed-off-by: George Zhang <georgezhang@vmware.com> Acked-by: Andy king <acking@vmware.com> Acked-by: Dmitry Torokhov <dtor@vmware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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George Zhang authored
VMCI resource tracks all used resources within the vmci code. Signed-off-by: George Zhang <georgezhang@vmware.com> Acked-by: Andy king <acking@vmware.com> Acked-by: Dmitry Torokhov <dtor@vmware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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George Zhang authored
VMCI queue pairs allow for bi-directional ordered communication between host and guests. Signed-off-by: George Zhang <georgezhang@vmware.com> Acked-by: Andy king <acking@vmware.com> Acked-by: Dmitry Torokhov <dtor@vmware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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George Zhang authored
VMCI handle code adds support for dynamic arrays that will grow if they need to. Signed-off-by: George Zhang <georgezhang@vmware.com> Acked-by: Andy king <acking@vmware.com> Acked-by: Dmitry Torokhov <dtor@vmware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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George Zhang authored
VMCI event code that manages event handlers and handles callbacks when specific events fire. Signed-off-by: George Zhang <georgezhang@vmware.com> Acked-by: Andy king <acking@vmware.com> Acked-by: Dmitry Torokhov <dtor@vmware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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George Zhang authored
VMCI driver code implementes both the host and guest personalities of the VMCI driver. Signed-off-by: George Zhang <georgezhang@vmware.com> Acked-by: Andy king <acking@vmware.com> Acked-by: Dmitry Torokhov <dtor@vmware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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George Zhang authored
VMCI doorbell code allows for notifcations between host and guest. Signed-off-by: George Zhang <georgezhang@vmware.com> Acked-by: Andy king <acking@vmware.com> Acked-by: Dmitry Torokhov <dtor@vmware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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George Zhang authored
VMCI datagram Implements datagrams to allow data to be sent between host and guest. Signed-off-by: George Zhang <georgezhang@vmware.com> Acked-by: Andy king <acking@vmware.com> Acked-by: Dmitry Torokhov <dtor@vmware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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George Zhang authored
VMCI Context code maintains state for vmci and allows the driver to communicate with multiple VMs. Signed-off-by: George Zhang <georgezhang@vmware.com> Acked-by: Andy king <acking@vmware.com> Acked-by: Dmitry Torokhov <dtor@vmware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 07 Jan, 2013 14 commits
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Tomas Winkler authored
1. Add common prefix mei_hbm_ to all handlers and made them static 2. Drop now useless function same_flow_addr Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Tomas Winkler authored
1. use mei_hbm_ for basic host bus message function 2. use mei_hbm_cl prefix for host bus messages that operation on behalf of a client Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Tomas Winkler authored
We can drop useless castings and use proper types. We remove the casting in mei_hbm_hdr function and add new function mei_hbm_stop_request_prepare that utilize the new structure Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Tomas Winkler authored
Define a new parent type mei_hbm_cl_cmd for hbm commands that are sent on behalf of specific ME client. This allows us compacting boilerplate code via mei_hbm_cl_hdr function Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Tomas Winkler authored
mei_amthif_read_message prototype was not dropped in one of the moving/renaming patches Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Tomas Winkler authored
for sake of more layered design we move host bus message handling to the new hbm.c file Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Tomas Winkler authored
1. move direct register handling to interface.c and make them static 2. add new function mei_clear_interrupts that wraps direct register access 3. export other functions in mei_dev.h Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Tomas Winkler authored
Move struct mei_me_client from hw.h to mei_dev.h as it is not part of the hardware API. The structutre doesn't have to be packed. Add kdoc for this structure. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Tomas Winkler authored
1. mem_base and mem_length are not used so we can delete them 2. add kdoc for mem_addr member of mei_device Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Tomas Winkler authored
first include linux/mei.h then only local headers to avoid possible false dependencies Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Tomas Winkler authored
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Tomas Winkler authored
Internal clients numbers are implementation choice and not defined by the hardware. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Tomas Winkler authored
Introduce MEI_HDR_FMT and MEI_HDR_PRM macros. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Tomas Winkler authored
The length is already part of the message header and it is validated before the function call Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 03 Jan, 2013 10 commits
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Linus Torvalds authored
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git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-ledsLinus Torvalds authored
Pull LED fix from Bryan Wu. * 'fixes-for-3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds: leds: leds-gpio: set devm_gpio_request_one() flags param correctly
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Javier Martinez Canillas authored
commit a99d76f9 leds: leds-gpio: use gpio_request_one changed the leds-gpio driver to use gpio_request_one() instead of gpio_request() + gpio_direction_output() Unfortunately, it also made a semantic change that breaks the leds-gpio driver. The gpio_request_one() flags parameter was set to: GPIOF_DIR_OUT | (led_dat->active_low ^ state) Since GPIOF_DIR_OUT is 0, the final flags value will just be the XOR'ed value of led_dat->active_low and state. This value were used to distinguish between HIGH/LOW output initial level and call gpio_direction_output() accordingly. With this new semantic gpio_request_one() will take the flags value of 1 as a configuration of input direction (GPIOF_DIR_IN) and will call gpio_direction_input() instead of gpio_direction_output(). int gpio_request_one(unsigned gpio, unsigned long flags, const char *label) { .. if (flags & GPIOF_DIR_IN) err = gpio_direction_input(gpio); else err = gpio_direction_output(gpio, (flags & GPIOF_INIT_HIGH) ? 1 : 0); .. } The right semantic is to evaluate led_dat->active_low ^ state and set the output initial level explicitly. Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Reported-by: Arnaud Patard <arnaud.patard@rtp-net.org> Tested-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Signed-off-by: Bryan Wu <cooloney@gmail.com>
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git://www.linux-watchdog.org/linux-watchdogLinus Torvalds authored
Pull watchdog fixes from Wim Van Sebroeck: "This fixes some small errors in the new da9055 driver, eliminates a compiler warning and adds DT support for the twl4030_wdt driver (so that we can have multiple watchdogs with DT on the omap platforms)." * git://www.linux-watchdog.org/linux-watchdog: watchdog: twl4030_wdt: add DT support watchdog: omap_wdt: eliminate unused variable and a compiler warning watchdog: da9055: Don't update wdt_dev->timeout in da9055_wdt_set_timeout error path watchdog: da9055: Fix invalid free of devm_ allocated data
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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pciLinus Torvalds authored
Pull PCI updates from Bjorn Helgaas: "Some fixes for v3.8. They include a fix for the new SR-IOV sysfs management support, an expanded quirk for Ricoh SD card readers, a Stratus DMI quirk fix, and a PME polling fix." * tag '3.8-pci-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: PCI: Reduce Ricoh 0xe822 SD card reader base clock frequency to 50MHz PCI/PM: Do not suspend port if any subordinate device needs PME polling PCI: Add PCIe Link Capability link speed and width names PCI: Work around Stratus ftServer broken PCIe hierarchy (fix DMI check) PCI: Remove spurious error for sriov_numvfs store and simplify flow
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David Howells authored
Commit 56c176c9 ("UAPI: strip the _UAPI prefix from header guards during header installation") strips the _UAPI prefix from header guards, but only if there's a single space between the cpp directive and the label. Make it more flexible and able to handle tabs and multiple white space characters. Signed-off-by: David Howells <dhowell@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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David Howells authored
Empty files can get deleted by the patch program, so remove empty Kbuild files and their links from the parent Kbuilds. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Linus Torvalds authored
Merge tag 'ecryptfs-3.8-rc2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tyhicks/ecryptfs Pull ecryptfs fixes from Tyler Hicks: "Two self-explanatory fixes and a third patch which improves performance: when overwriting a full page in the eCryptfs page cache, skip reading in and decrypting the corresponding lower page." * tag 'ecryptfs-3.8-rc2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tyhicks/ecryptfs: fs/ecryptfs/crypto.c: make ecryptfs_encode_for_filename() static eCryptfs: fix to use list_for_each_entry_safe() when delete items eCryptfs: Avoid unnecessary disk read and data decryption during writing
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git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-clientLinus Torvalds authored
Pull Ceph fixes from Sage Weil: "Two of Alex's patches deal with a race when reseting server connections for open RBD images, one demotes some non-fatal BUGs to WARNs, and my patch fixes a protocol feature bit failure path." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: libceph: fix protocol feature mismatch failure path libceph: WARN, don't BUG on unexpected connection states libceph: always reset osds when kicking libceph: move linger requests sooner in kick_requests()
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Mel Gorman authored
Sasha was fuzzing with trinity and reported the following problem: BUG: sleeping function called from invalid context at kernel/mutex.c:269 in_atomic(): 1, irqs_disabled(): 0, pid: 6361, name: trinity-main 2 locks held by trinity-main/6361: #0: (&mm->mmap_sem){++++++}, at: [<ffffffff810aa314>] __do_page_fault+0x1e4/0x4f0 #1: (&(&mm->page_table_lock)->rlock){+.+...}, at: [<ffffffff8122f017>] handle_pte_fault+0x3f7/0x6a0 Pid: 6361, comm: trinity-main Tainted: G W 3.7.0-rc2-next-20121024-sasha-00001-gd95ef01-dirty #74 Call Trace: __might_sleep+0x1c3/0x1e0 mutex_lock_nested+0x29/0x50 mpol_shared_policy_lookup+0x2e/0x90 shmem_get_policy+0x2e/0x30 get_vma_policy+0x5a/0xa0 mpol_misplaced+0x41/0x1d0 handle_pte_fault+0x465/0x6a0 This was triggered by a different version of automatic NUMA balancing but in theory the current version is vunerable to the same problem. do_numa_page -> numa_migrate_prep -> mpol_misplaced -> get_vma_policy -> shmem_get_policy It's very unlikely this will happen as shared pages are not marked pte_numa -- see the page_mapcount() check in change_pte_range() -- but it is possible. To address this, this patch restores sp->lock as originally implemented by Kosaki Motohiro. In the path where get_vma_policy() is called, it should not be calling sp_alloc() so it is not necessary to treat the PTL specially. Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Tested-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Mel Gorman <mgorman@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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- 02 Jan, 2013 7 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4Linus Torvalds authored
Pull ext4 bug fixes from Ted Ts'o: "Various bug fixes for ext4. Perhaps the most serious bug fixed is one which could cause file system corruptions when performing file punch operations." * tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: ext4: avoid hang when mounting non-journal filesystems with orphan list ext4: lock i_mutex when truncating orphan inodes ext4: do not try to write superblock on ro remount w/o journal ext4: include journal blocks in df overhead calcs ext4: remove unaligned AIO warning printk ext4: fix an incorrect comment about i_mutex ext4: fix deadlock in journal_unmap_buffer() ext4: split off ext4_journalled_invalidatepage() jbd2: fix assertion failure in jbd2_journal_flush() ext4: check dioread_nolock on remount ext4: fix extent tree corruption caused by hole punch
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Hugh Dickins authored
Remove the unused argument (formerly no_context) from mpol_parse_str() and from mpol_to_str(). Signed-off-by: Hugh Dickins <hughd@google.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Hugh Dickins authored
Recently I suggested using "mount -o remount,mpol=local /tmp" in NUMA mempolicy testing. Very nasty. Reading /proc/mounts, /proc/pid/mounts or /proc/pid/mountinfo may then corrupt one bit of kernel memory, often in a page table (causing "Bad swap" or "Bad page map" warning or "Bad pagetable" oops), sometimes in a vm_area_struct or rbnode or somewhere worse. "mpol=prefer" and "mpol=prefer:Node" are equally toxic. Recent NUMA enhancements are not to blame: this dates back to 2.6.35, when commit e17f74af "mempolicy: don't call mpol_set_nodemask() when no_context" skipped mpol_parse_str()'s call to mpol_set_nodemask(), which used to initialize v.preferred_node, or set MPOL_F_LOCAL in flags. With slab poisoning, you can then rely on mpol_to_str() to set the bit for node 0x6b6b, probably in the next page above the caller's stack. mpol_parse_str() is only called from shmem_parse_options(): no_context is always true, so call it unused for now, and remove !no_context code. Set v.nodes or v.preferred_node or MPOL_F_LOCAL as mpol_to_str() might expect. Then mpol_to_str() can ignore its no_context argument also, the mpol being appropriately initialized whether contextualized or not. Rename its no_context unused too, and let subsequent patch remove them (that's not needed for stable backporting, which would involve rejects). I don't understand why MPOL_LOCAL is described as a pseudo-policy: it's a reasonable policy which suffers from a confusing implementation in terms of MPOL_PREFERRED with MPOL_F_LOCAL. I believe this would be much more robust if MPOL_LOCAL were recognized in switch statements throughout, MPOL_F_LOCAL deleted, and MPOL_PREFERRED use the (possibly empty) nodes mask like everyone else, instead of its preferred_node variant (I presume an optimization from the days before MPOL_LOCAL). But that would take me too long to get right and fully tested. Signed-off-by: Hugh Dickins <hughd@google.com> Cc: stable@vger.kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Eric Wong authored
EPOLL_CTL_MOD sets the interest mask before calling f_op->poll() to ensure events are not missed. Since the modifications to the interest mask are not protected by the same lock as ep_poll_callback, we need to ensure the change is visible to other CPUs calling ep_poll_callback. We also need to ensure f_op->poll() has an up-to-date view of past events which occured before we modified the interest mask. So this barrier also pairs with the barrier in wq_has_sleeper(). This should guarantee either ep_poll_callback or f_op->poll() (or both) will notice the readiness of a recently-ready/modified item. This issue was encountered by Andreas Voellmy and Junchang(Jason) Wang in: http://thread.gmane.org/gmane.linux.kernel/1408782/Signed-off-by: Eric Wong <normalperson@yhbt.net> Cc: Hans Verkuil <hans.verkuil@cisco.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Davide Libenzi <davidel@xmailserver.org> Cc: Hans de Goede <hdegoede@redhat.com> Cc: Mauro Carvalho Chehab <mchehab@infradead.org> Cc: David Miller <davem@davemloft.net> Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andreas Voellmy <andreas.voellmy@yale.edu> Tested-by: "Junchang(Jason) Wang" <junchang.wang@yale.edu> Cc: netdev@vger.kernel.org Cc: linux-fsdevel@vger.kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Aaro Koskinen authored
Add DT support for twl4030_wdt. This is needed to get twl4030_wdt to probe when booting with DT. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
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Aaro Koskinen authored
We forgot to delete this in the commit 4f4753d9 (watchdog: omap_wdt: convert to devm_ functions), and as a result the following compilation warning was introduced: drivers/watchdog/omap_wdt.c: In function 'omap_wdt_remove': drivers/watchdog/omap_wdt.c:299:19: warning: unused variable 'res' [-Wunused-variable] Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Reviewed-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
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Axel Lin authored
Otherwise, WDIOC_GETTIMEOUT returns wrong value if set_timeout fails. This patch also removes unnecessary ret variable in da9055_wdt_ping function. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
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