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It turns out that not all directory inodes with dentries on the
i_dentry list are unusable here. We only consider them unusable if they
are still hashed or if they have a root dentry attached.
Full disclosure -- this check is inherently racy. There's nothing that
stops someone from slapping a new dentry onto this inode just after
this check, or hashing an existing one that's already attached. So,
this is really a "best effort" thing to work around misbehaving servers.
Signed-off-by: Jeff Layton <[email protected]>
Signed-off-by: Steve French <[email protected]>
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Make cifs_convert_address() take a const src pointer and a length so that all
the strlen() calls in their can be cut out and to make it unnecessary to modify
the src string.
Also return the data length from dns_resolve_server_name_to_ip() so that a
strlen() can be cut out of cifs_compose_mount_options() too.
Acked-by: Jeff Layton <[email protected]>
Signed-off-by: David Howells <[email protected]>
Signed-off-by: Steve French <[email protected]>
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Fixed the nit pointed out by Jeff.
From: Suresh Jayaraman <[email protected]>
Subject: [PATCH 1/2] cifs: show features compiled in as part of DebugData
This patch adds the features that are compiled in to the CIFS debugging data
as shown below:
$cat /proc/fs/cifs/DebugData
Display Internal CIFS Data Structures for Debugging
---------------------------------------------------
CIFS Version 1.64
Features: dfs fscache posix spnego xattr
Active VFS Requests: 0
...
This patch provides a definitive way to tell what features are currently
enabled in the running kernel. This could also help debugging.
Signed-off-by: Suresh Jayaraman <[email protected]>
Cc: Jeff Layton <[email protected]>
Signed-off-by: Steve French <[email protected]>
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Update the README file to reflect that now DebugData shows all
the features enabled.
Signed-off-by: Suresh Jayaraman <[email protected]>
Cc: Jeff Layton <[email protected]>
--
fs/cifs/README | 5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)
Signed-off-by: Steve French <[email protected]>
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Not all the channels and slots available on the DM646x EVM
are used by the devices on the EVM. These resources can be
used by the DSP to speed up codec operations.
This patch reserves these channels for the DSP.
Signed-off-by: Sudhakar Rajashekhara <[email protected]>
Signed-off-by: Sekhar Nori <[email protected]>
Signed-off-by: Kevin Hilman <[email protected]>
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The drivers on da8xx/omapl EVMs do not utilize all the channels
and slots provided by EDMA. Some of these are better utilitzed by
the DSP on the SoC for speeding up codec operations.
Reserve these channels/slots for the DSP.
Signed-off-by: Sudhakar Rajashekhara <[email protected]>
Signed-off-by: Sekhar Nori <[email protected]>
Signed-off-by: Kevin Hilman <[email protected]>
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Current EDMA driver is not taking care of EDMA channels/slots
which are allocated from other processor, say DSP. If a
channel/slot is allocated from DSP, the existing EDMA driver
can still allocate the same resource on ARM.
This patch enables the user to pass the channel/slots reserved
for DSP as platform data. EDMA driver scans this list during
probe and prepares a bitmap of channel/slots which can be used
on ARM side.
Trying to reserve channels by doing a 'pre-allocate' using
edma_alloc_{slot|channel}() API does not work because
1) The reservation should be done in probe() to avoid race
with other ARM side driver trying to use EDMA
2) The alloc channel API sets up the access through shadow region
0 which will be incorrect for DSP usage. It also sets up the
channel <-> queue number mapping which is not required as DSP
will likely do its own mapping anyway.
3) (minor) There is no API to allocate channels in bulk.
Signed-off-by: Sudhakar Rajashekhara <[email protected]>
Cc: David Brownell <[email protected]>
Signed-off-by: Sekhar Nori <[email protected]>
Signed-off-by: Kevin Hilman <[email protected]>
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This patch modifies the EDMA driver to expect the channel
controller (CC) infomation passed on by the platform as a fixed
size (EDMA_MAX_CC) array of pointers to structures.
Doing so helps catch errors of the sort where the resource
structure has information for more channel controllers than
the number channel controller info structures defined.
Such insufficient platform data would lead to illegal memory
accesses.
Signed-off-by: Sekhar Nori <[email protected]>
Signed-off-by: Kevin Hilman <[email protected]>
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This patch helps get rid of the following sparse warnings
of the type:
CHECK arch/arm/mach-davinci/da830.c
arch/arm/mach-davinci/da830.c:1026:3: warning: Initializer entry defined twice
arch/arm/mach-davinci/da830.c:1027:3: also defined here
coming from the irq priorities array init.
Apart from one instance of genuinie repetition, most are are instances
of multiple #defines of the same interrupt number. I have not
removed the multiple definitions from the irq.h file in the hope
that someone might decide to use them as shared interrupts at some
point of time. The priority initialization however needs to be done
only once and hence has been corrected.
Signed-off-by: Sekhar Nori <[email protected]>
Signed-off-by: Kevin Hilman <[email protected]>
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The register base address for the second serial port (UART1) was
wrong.
Signed-off-by: Thomas Koeller <[email protected]>
Signed-off-by: Kevin Hilman <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (79 commits)
powerpc/8xx: Add support for the MPC8xx based boards from TQC
powerpc/85xx: Introduce support for the Freescale P1022DS reference board
powerpc/85xx: Adding DTS for the STx GP3-SSA MPC8555 board
powerpc/85xx: Change deprecated binding for 85xx-based boards
powerpc/tqm85xx: add a quirk for ti1520 PCMCIA bridge
powerpc/tqm85xx: update PCI interrupt-map attribute
powerpc/mpc8308rdb: support for MPC8308RDB board from Freescale
powerpc/fsl_pci: add quirk for mpc8308 pcie bridge
powerpc/85xx: Cleanup QE initialization for MPC85xxMDS boards
powerpc/85xx: Fix booting for P1021MDS boards
powerpc/85xx: Fix SWIOTLB initalization for MPC85xxMDS boards
powerpc/85xx: kexec for SMP 85xx BookE systems
powerpc/5200/i2c: improve i2c bus error recovery
of/xilinxfb: update tft compatible versions
powerpc/fsl-diu-fb: Support setting display mode using EDID
powerpc/5121: doc/dts-bindings: update doc of FSL DIU bindings
powerpc/5121: shared DIU framebuffer support
powerpc/5121: move fsl-diu-fb.h to include/linux
powerpc/5121: fsl-diu-fb: fix issue with re-enabling DIU area descriptor
powerpc/512x: add clock structure for Video-IN (VIU) unit
...
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* 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze: (49 commits)
microblaze: Add KGDB support
microblaze: Support brki rX, 0x18 for user application debugging
microblaze: Remove nop after MSRCLR/SET, MTS, MFS instructions
microblaze: Simplify syscall rutine
microblaze: Move PT_MODE saving to delay slot
microblaze: Fix _interrupt function
microblaze: Fix _user_exception function
microblaze: Put together addik instructions
microblaze: Use delay slot in syscall macros
microblaze: Save kernel mode in delay slot
microblaze: Do not mix register saving and mode setting
microblaze: Move SAVE_STATE upward
microblaze: entry.S: Macro optimization
microblaze: Optimize hw exception rutine
microblaze: Implement clear_ums macro and fix SAVE_STATE macro
microblaze: Remove additional setup for kernel_mode
microblaze: Optimize SAVE_STATE macro
microblaze: Remove additional loading
microblaze: Completely remove working with R11 register
microblaze: Do not setup BIP in _debug_exception
...
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
arch/sparc/mm: Use GFP_KERNEL
MAINTAINERS: Add trailing slash to SBUS path.
sbus: autoconvert trivial BKL users to private mutex
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git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
[IA64] increase ia64 static per cpu area
[IA64] Put ia64 config files on the Uwe Kleine-König diet
[IA64] perfmon: convert to unlocked_ioctl
[IA64] beautify vmlinux.lds.h
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* 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus: (150 commits)
MIPS: PowerTV: Separate PowerTV USB support from non-USB code
MIPS: strip the un-needed sections of vmlinuz
MIPS: Clean up the calculation of VMLINUZ_LOAD_ADDRESS
MIPS: Clean up arch/mips/boot/compressed/decompress.c
MIPS: Clean up arch/mips/boot/compressed/ld.script
MIPS: Unify the suffix of compressed vmlinux.bin
MIPS: PowerTV: Add Gaia platform definitions.
MIPS: BCM47xx: Fix nvram_getenv return value.
MIPS: Octeon: Allow more than 3.75GB of memory with PCIe
MIPS: Clean up notify_die() usage.
MIPS: Remove unused task_struct.trap_no field.
Documentation: Mention that KProbes is supported on MIPS
SAMPLES: kprobe_example: Make it print something on MIPS.
MIPS: kprobe: Add support.
MIPS: Add instrunction format for BREAK and SYSCALL
MIPS: kprobes: Define regs_return_value()
MIPS: Ritually kill stupid printk.
MIPS: Octeon: Disallow MSI-X interrupt and fall back to MSI interrupts.
MIPS: Octeon: Support 256 MSI on PCIe
MIPS: Decode core number for R2 CPUs.
...
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Update the kgdb docs to include information about kernel mode setting support.
[Randy Dunlap <[email protected]>: grammatical corrections]
CC: Randy Dunlap <[email protected]>
Signed-off-by: Jason Wessel <[email protected]>
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* git://git.kernel.org/pub/scm/linux/kernel/git/czankel/xtensa-2.6:
xtensa: Disable PCI and nfsroot on simulation target
xtensa: Add missing include in coprocessor.h
xtensa: Fix the network driver for the simulator target
xtensa: Shuffle include statements to fix linker script
xtensa: Add -mforce-no-pic option is supported
xtensa: Fixes due to bss boundary symbol name changes.
xtensa: Fix linker script patch-up
xtensa: Fix FLUSH_DCACHE macro for some variants.
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Signed-off-by: Nick Piggin <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Commit 5349ef3127c77075ff70b2014f17ae0fbcaaf199 (drm/fb: fix
FBIOGET/PUT_VSCREENINFO pixel clock handling) changed the logic of
when a pixclock was valid vs invalid.
The atomic kernel mode setting used by the kernel debugger relies upon
the drm_fb_helper_check_var() to always return -EINVAL. Until a
better solution exists, this behavior will be restored.
CC: David Airlie <[email protected]>
CC: Jesse Barnes <[email protected]>
CC: Clemens Ladisch <[email protected]>
Signed-off-by: Jason Wessel <[email protected]>
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If the HW compression is left on, the call backs from the HW will
crash the kernel. The only time this code is called is when kernel
mode setting is in use with kgdb and the kdb shell.
The atomic display pipe handler callback will reset everything when
kgdb restores kernel to the run state.
Signed-off-by: Jason Wessel <[email protected]>
Acked-by: Jesse Barnes <[email protected]>
CC: David Airlie <[email protected]>
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Implement atomic kernel mode settings using the fb layer's debug hook
system for supporting debugger interaction.
Signed-off-by: Jesse Barnes <[email protected]>
Signed-off-by: Jason Wessel <[email protected]>
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Implement the callbacks for KDB entry/exit via the drm helpers.
Signed-off-by: Jesse Barnes <[email protected]>
Signed-off-by: Jason Wessel <[email protected]>
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Add fb ops to handle enter/exit of the kernel debugger. If present, the
fb core will register them with KGDB and they'll be called when the
debugger is entered and exited. The new functions are responsible for
switching to an appropriate debug framebuffer and restoring the
interrupted state at exit time.
Signed-off-by: Jesse Barnes <[email protected]>
Signed-off-by: Jason Wessel <[email protected]>
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Add the kms keyword processing to kgdboc and the callbacks to invoke
console switching when ever kgdboc is started with "kgdboc=kms,kbd".
Signed-off-by: Jason Wessel <[email protected]>
Signed-off-by: Jesse Barnes <[email protected]>
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The kernel console interface stores the number of lines it is
configured to use. The kdb debugger can greatly benefit by knowing how
many lines there are on the console for the pager functionality
without having the end user compile in the setting or have to
repeatedly change it at run time.
Signed-off-by: Jason Wessel <[email protected]>
Signed-off-by: Jesse Barnes <[email protected]>
CC: David Airlie <[email protected]>
CC: Andrew Morton <[email protected]>
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These functions allow the kernel debugger to save and restore the
state of the system console.
Signed-off-by: Jesse Barnes <[email protected]>
Signed-off-by: Jason Wessel <[email protected]>
CC: David Airlie <[email protected]>
CC: Andrew Morton <[email protected]>
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When an arch such as mips and microblaze does not implement either HW
or software single stepping the debug core should re-enter kdb. The
kdb code will properly ignore the single step operation. Attempting
to single step the kernel without software or hardware support causes
unpredictable kernel crashes.
Signed-off-by: Jason Wessel <[email protected]>
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Use the macros provided by the HW breakpoint API.
Signed-off-by: Dongdong Deng <[email protected]>
Signed-off-by: Jason Wessel <[email protected]>
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The mips kgdb specific code does not support software or HW single
stepping so it should not implement
Signed-off-by: Jason Wessel <[email protected]>
Signed-off-by: Dongdong Deng <[email protected]>
Acked-by: Ralf Baechle <[email protected]>
CC: [email protected]
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The kdb kmap should never get used outside of the kernel debugger
exception context.
Signed-off-by: Jason Wessel<[email protected]>
CC: Andrew Morton <[email protected]>
CC: Ingo Molnar <[email protected]>
CC: [email protected]
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Found by gcc 4.6's new warnings
Signed-off-by: Andi Kleen <[email protected]>
Signed-off-by: Jason Wessel <[email protected]>
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In systems with more than one processor it is desirable to look at the
per cpu trace buffers.
Signed-off-by: Jason Wessel <[email protected]>
Acked-by: Steven Rostedt <[email protected]>
CC: Frederic Weisbecker <[email protected]>
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Add in a helper function to allow the kdb shell to dump the ftrace
buffer.
Modify trace.c to expose the capability to iterate over the ftrace
buffer in a read only capacity.
Signed-off-by: Jason Wessel <[email protected]>
Acked-by: Steven Rostedt <[email protected]>
CC: Frederic Weisbecker <[email protected]>
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kgdb_handle_breakpoint checks the first arch_kgdb_breakpoint
which is not known by gdb that's why is necessary jump over
it. The jump lenght is equal to BREAK_INSTR_SIZE that's
why is cleaner to use defined macro instead of hardcoded
non-described offset.
Signed-off-by: Michal Simek <[email protected]>
Signed-off-by: Jason Wessel <[email protected]>
Acked-by: Benjamin Herrenschmidt <[email protected]>
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Now that ARM implements the notify die handlers, add the ability for
the kernel debugger to receive the notifications.
Signed-off-by: Jason Wessel <[email protected]>
CC: Russell King <[email protected]>
CC: [email protected]
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Presently the usable registers definitions on x86 are not contiguous
for kgdb. The x86 kgdb uses a case statement for the sparse register
accesses. The array which defines the registers (dbg_reg_def) should
not be used directly in order to safely work with sparse register
definitions.
Specifically there was a problem when gdb accesses ORIG_AX, which is
accessed only through the case statement.
This patch encodes register memory using the size information provided
from the debugger which avoids the need to look up the size of the
register. The dbg_set_reg() function always further validates the
inputs from the debugger.
Signed-off-by: Jason Wessel <[email protected]>
Signed-off-by: Dongdong Deng <[email protected]>
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The gdbserial 'p' and 'P' packets allow gdb to individually get and
set registers instead of querying for all the available registers.
Signed-off-by: Jason Wessel <[email protected]>
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Implement the ability to individually get and set registers for kdb
and kgdb for arm.
Signed-off-by: Jason Wessel <[email protected]>
CC: Russell King <[email protected]>
CC: [email protected]
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Implement the ability to individually get and set registers for kdb
and kgdb for mips.
Signed-off-by: Jason Wessel <[email protected]>
Acked-by: Ralf Baechle <[email protected]>
CC: [email protected]
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Implement the ability to individually get and set registers for kdb
and kgdb for x86.
Signed-off-by: Jason Wessel <[email protected]>
Acked-by: H. Peter Anvin <[email protected]>
CC: Ingo Molnar <[email protected]>
CC: [email protected]
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The kdb shell specification includes the ability to get and set
architecture specific registers by name.
For the time being individual register get and set will be implemented
on a per architecture basis. If an architecture defines
DBG_MAX_REG_NUM > 0 then kdb and the gdbstub will use the capability
for individually getting and setting architecture specific registers.
Signed-off-by: Jason Wessel <[email protected]>
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The gdb debugger understands how to parse short versions of the thread
reference string as long as the bytes are paired in sets of two
characters. The kgdb implementation was always sending 8 leading
zeros which could be omitted, and further optimized in the case of
non-negative thread numbers. The negative numbers are used to
reference a specific cpu in the case of kgdb.
An example of the previous i386 stop packet looks like:
T05thread:00000000000003bb;
New stop packet response:
T05thread:03bb;
The previous ThreadInfo response looks like:
m00000000fffffffe,0000000000000001,0000000000000002,0000000000000003,0000000000000004,0000000000000005,0000000000000006,0000000000000007,000000000000000c,0000000000000088,000000000000008a,000000000000008b,000000000000008c,000000000000008d,000000000000008e,00000000000000d4,00000000000000d5,00000000000000dd
New ThreadInfo response:
mfffffffe,01,02,03,04,05,06,07,0c,88,8a,8b,8c,8d,8e,d4,d5,dd
A few bytes saved means better response time when using kgdb over a
serial line.
Signed-off-by: Jason Wessel <[email protected]>
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Signed-off-by: Andy Shevchenko <[email protected]>
Signed-off-by: Jason Wessel <[email protected]>
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FBIO_WAITFORVSYNC is a stardard ioctl for waiting vsync, already
used by some userspace, so add it as an alias for OMAPFB_WAITFORVSYNC.
Signed-off-by: Grazvydas Ignotas <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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The function overlay_manager_store currently fails if the sysfs input is a
prefix string of an existing overlay manager name. This occurs because strncmp
compares the two strings only till the length of the input sysfs string. So a
sysfs input "lcd" will match manager name "lcd2" which is incorrect behavior.
The use of sysfs_streq here will prevent this false positive match to occur.
Signed-off-by: Archit Taneja <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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In the case of an error on calling dsi_update_screen_l4(), a
successful framedone callback is still sent to panel-taal. An
error should be returned to taal_update() instead.
Signed-off-by: Archit Taneja <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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TDO35S samples the data on the falling adge of the pixel clock,
therefore the data strobe should be on the raising edge.
Signed-off-by: Igor Grinberg <[email protected]>
Signed-off-by: Mike Rapoport <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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omapfb_mode_to_timings() sets the bpp to 0 when bootarg omapfb.mode is set to
either "pal" or "ntsc". This patch corrects this by setting the bpp to 24, as
would be done if omapdss_default_get_recommended_bpp() would be called.
Signed-off-by: Maurus Cuelenaere <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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Move sysfs entry creation to omapfb_probe() from omapfb_create_framebuffers().
This will make sure that sysfs entry is not left behind in case of unsuccessful
probe due to failure in enabling fb0 of omapfb_create_framebuffers().
Signed-off-by: Afzal Mohammed <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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With recent changes happened in OMAP2/3 DSS library for regulator interface, it
is required to define DSI regulator supply, without this DSS (in turn Fbdev)
fails to get regulator.
Signed-off-by: Vaibhav Hiremath <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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