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2011-07-15perf probe: Support adding probes on offline kernel modulesMasami Hiramatsu
Support adding probes on offline kernel modules. This enables perf-probe to trace kernel-module init functions via perf-probe. If user gives the path of module with -m option, perf-probe expects the module is offline. This feature works with --add, --funcs, and --vars. E.g) # perf probe -m /lib/modules/`uname -r`/kernel/fs/btrfs/btrfs.ko \ -a "extent_io_init:5 extent_state_cache" Add new events: probe:extent_io_init (on extent_io_init:5 with extent_state_cache) probe:extent_io_init_1 (on extent_io_init:5 with extent_state_cache) You can now use it on all perf tools, such as: perf record -e probe:extent_io_init_1 -aR sleep 1 Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Link: http://lkml.kernel.org/r/20110627072751.6528.10230.stgit@fedora15 Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2011-07-15perf probe: Add probed module in front of functionMasami Hiramatsu
Add probed module name and ":" in front of function name if -m module option is given. In the result, the symbol name passed to kprobe-tracer becomes MODULE:FUNCTION, so that kallsyms can solve it as a symbol in the module correctly. Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Link: http://lkml.kernel.org/r/20110627072745.6528.26416.stgit@fedora15 Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2011-07-15perf probe: Introduce debuginfo to encapsulate dwarf informationMasami Hiramatsu
Introduce debuginfo to encapsulate dwarf information. This new object allows us to reuse and expand debuginfo easily. Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Link: http://lkml.kernel.org/r/20110627072739.6528.12438.stgit@fedora15 Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2011-07-15perf-probe: Move dwarf library routines to dwarf-aux.{c, h}Masami Hiramatsu
Move dwarf library related routines to dwarf-aux.{c,h}. This includes several minor changes. - Add simple documents for each API. - Rename die_find_real_subprogram() to die_find_realfunc() - Rename line_walk_handler_t to line_walk_callback_t. - Minor cleanups. Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Link: http://lkml.kernel.org/r/20110627072727.6528.57647.stgit@fedora15 Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2011-07-15perf probe: Remove redundant dwarf functionsMasami Hiramatsu
Since there are dwarf_bitsize, dwarf_bitoffset and dwarf_bytesize defined in libdw, we don't need die_get_bit_size, die_get_bit_offset and die_get_byte_size anymore. Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Link: http://lkml.kernel.org/r/20110627072721.6528.2747.stgit@fedora15 Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2011-07-15gpio: wm831x: add a missing break in wm831x_gpio_dbg_showAxel Lin
Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-07-15perf probe: Move strtailcmp to string.cMasami Hiramatsu
Since strtailcmp() is enough generic, it should be defined in string.c. Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Link: http://lkml.kernel.org/r/20110627072715.6528.10677.stgit@fedora15 Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2011-07-15Merge branch 'fixes-for-arnd' of git://git.pengutronix.de/git/imx/linux-2.6 ↵Arnd Bergmann
into imx/fixes
2011-07-15perf probe: Rename DIE_FIND_CB_FOUND to DIE_FIND_CB_ENDMasami Hiramatsu
Since die_find/walk* callbacks use DIE_FIND_CB_FOUND for both of failed and found cases, it should be "END" instead "FOUND" for avoiding confusion. Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Reported-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Link: http://lkml.kernel.org/r/20110627072709.6528.45706.stgit@fedora15 Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2011-07-15mcp23s08: add i2c supportPeter Korsgaard
Add i2c bindings for the mcp230xx devices. This is quite a lot simpler than the spi one as there's no funky sub addressing done (one struct i2c_client per struct gpio_chip). The mcp23s08_platform_data structure is reused for i2c, even though only a single mcp23s08_chip_info structure is needed. To use, simply fill out a platform_data structure and pass it in i2c_board_info, E.G.: static const struct mcp23s08_platform_data mcp23017_data = { .chip[0] = { .pullups = 0x00ff, }, .base = 240, }; static struct i2c_board_info __initdata i2c_devs[] = { { I2C_BOARD_INFO("mcp23017", 0x20), .platform_data = &smartview_mcp23017_data, }, ... }; Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-07-15mcp23s08: isolate spi specific partsPeter Korsgaard
Change spi member of struct mcp23s08 to be a ops-specific opaque data pointer, and move spi specific knowledge out of mcp23s08_probe_one(). No functional change, but is needed to add i2c support. Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-07-15mcp23s08: get rid of setup/teardown callbacksPeter Korsgaard
There's no in-tree users, and bus notifiers are more generic anyway. Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-07-15tracing/kprobe: Update symbol reference when loading moduleMasami Hiramatsu
Since the address of a module-local variable can only be solved after the target module is loaded, the symbol fetch-argument should be updated when loading target module. Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Link: http://lkml.kernel.org/r/20110627072703.6528.75042.stgit@fedora15 Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2011-07-15tracing/kprobes: Support module init function probingMasami Hiramatsu
To support probing module init functions, kprobe-tracer allows user to define a probe on non-existed function when it is given with a module name. This also enables user to set a probe on a function on a specific module, even if a same name (but different) function is locally defined in another module. The module name must be in the front of function name and separated by a ':'. e.g. btrfs:btrfs_init_sysfs Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Link: http://lkml.kernel.org/r/20110627072656.6528.89970.stgit@fedora15 Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2011-07-15kprobes: Return -ENOENT if probe point doesn't existMasami Hiramatsu
Return -ENOENT if probe point doesn't exist, but still returns -EINVAL if both of kprobe->addr and kprobe->symbol_name are specified or both are not specified. Acked-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Cc: "David S. Miller" <davem@davemloft.net> Link: http://lkml.kernel.org/r/20110627072650.6528.67329.stgit@fedora15 Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2011-07-15tracing/kprobes: Merge trace probe enable/disable functionsMasami Hiramatsu
Merge redundant enable/disable functions into enable_trace_probe() and disable_trace_probe(). Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org> Cc: yrl.pp-manager.tt@hitachi.com Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Link: http://lkml.kernel.org/r/20110627072644.6528.26910.stgit@fedora15 [ converted kprobe selftest to use enable_trace_probe ] Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2011-07-15Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2: nilfs2: remove resize from unsupported features list
2011-07-15gpio/tegra: dt: add binding for gpio polarityOlof Johansson
Allocate one bit in the available extra cell to indicate if the gpio should be considered logically inverted. Signed-off-by: Olof Johansson <olof@lixom.net> Acked-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-07-15mac80211: be more careful in suspend/resumeJohannes Berg
When suspending with all netdevs down, the device is stopped but we still call a number of driver callbacks that the driver might not expect. The same happens during resume, we might call a few callbacks without starting the driver. Fix this by checking open_count around more things and exiting quickly if it is 0. Also, while at this I noticed that the coverage class isn't reprogrammed after resume, so add that. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-07-15carl9170: fix formatting issues found by checkpatchPavel Roskin
Signed-off-by: Pavel Roskin <proski@gnu.org> Acked-By: christian Lamparter <chunkeey@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-07-15MAINTAINERS: add entry for Marvell mwifiex wireless driverBing Zhao
Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-07-15mac80211: let key iteration get keys in install orderJohannes Berg
ieee80211_iter_keys() currently returns keys in the backward order they were installed in, which is a bit confusing. Add them to the tail of the key list to make sure iterations go in the same order that keys were originally installed in. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-07-15mac80211: allow driver access to TKIP RX P1KJohannes Berg
When the driver wants to pre-program the TKIP RX phase 1 key, it needs to be able to obtain it for the peer's TA. Add API to allow it to generate it. The generation uses a dummy on-stack context since it doesn't know the RX queue. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-07-15ath9k: improve reliability of MIC error detectionFelix Fietkau
For unicast the hardware sometimes reports MIC errors even though the frame that it received actually contains a valid MIC - on some chips this can happen frequently enough to trigger TKIP countermeasures. Fix this issue by not reporting MIC errors for unicast frames with a valid key, letting mac80211 validate the MIC instead. Additionally, strip the MIC for all frames that the hardware considers valid to avoid wasting CPU cycles re-validating it. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-07-15orinoco: minor fixes for problems found by checkpatch.plPavel Roskin
Eliminate spaces before tabs. Eliminate typedefs. Add spaces around operators. Signed-off-by: Pavel Roskin <proski@gnu.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-07-15mwl8k: Fixing sta dereference when ieee80211_tx_info->control.sta is NULLYogesh Ashok Powar
Following oops was seen on SMP machine >BUG: unable to handle kernel NULL pointer dereference at 00000012 >IP: [<f8c56691>] mwl8k_tx+0x20e/0x561 [mwl8k] >*pde = 00000000 >Oops: 0000 [#1] SMP >Modules linked in: mwl8k mac80211 cfg80211 [last unloaded: cfg80211] As ieee80211_tx_info->control.sta may be NULL during ->tx call, avoiding sta dereference in such scenario with the following patch. Signed-off-by: Yogesh Ashok Powar <yogeshp@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-07-15nl80211/cfg80211: add max_sched_scan_ie_len in the hw descriptionLuciano Coelho
Some chips may support different lengths of user-supplied IEs with a single scheduled scan command than with a single normal scan command. To support this, this patch creates a separate hardware description element that describes the maximum size of user-supplied information element data supported in scheduled scans. Signed-off-by: Luciano Coelho <coelho@ti.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-07-15nl80211/cfg80211: add max_sched_scan_ssids in the hw descriptionLuciano Coelho
Some chips can scan more SSIDs with a single scheduled scan command than with a single normal scan command (eg. wl12xx chips). To support this, this patch creates a separate hardware description element that describes the amount of SSIDs supported in scheduled scans. Signed-off-by: Luciano Coelho <coelho@ti.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-07-15nl80211: advertise GTK rekey support, new triggersJohannes Berg
Since we now have the necessary API in place to support GTK rekeying, applications will need to know whether it is supported by a device. Add a pseudo-trigger that is used only to advertise that capability. Also, add some new triggers that match what iwlagn devices can do. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-07-15dlm: use workqueue for callbacksDavid Teigland
Instead of creating our own kthread (dlm_astd) to deliver callbacks for all lockspaces, use a per-lockspace workqueue to deliver the callbacks. This eliminates complications and slowdowns from many lockspaces sharing the same thread. Signed-off-by: David Teigland <teigland@redhat.com>
2011-07-15Merge branch 'hwmon-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/groeck/staging * 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/staging: hwmon: (adm1275) Fix coefficients per datasheet revision B hwmon: (pmbus) Use long variables for register to data conversions
2011-07-15Merge branch 'drm-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 * 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: drm/radeon/kms: add new NI pci ids
2011-07-15gma500: wire up the mrst i2c bus from chip_infoAlan Cox
We did the groundwork earlier now we can use it Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-07-15gma500: Fix DPU buildAlan Cox
Fix up the merge build Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-07-15gma500: Clean up the DPU config and make it runtimeAlan Cox
We really don't want this all done by ifdeffery - and this isn't any need as it's fairly easy to sort out. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-07-15gma500: resync with Medfield progressAlan Cox
Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-07-15gma500: Use the mrst helpers and power control for mode commitAlan Cox
We want to hit the MM panel backlight when appropriate Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-07-15gma500@ Fix backlight range errorAlan Cox
If we go out of range we break the pm counts on the error path Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-07-15gma500: More Moorestown muddle meddling means MM maybe might modesetAlan Cox
There are a least three different species we need to deal with and right now it seems the only way to sort them out is via DMI. Encapsulate the entire pile somewhere private and out of the way. Hopefully a saner method will emerge later. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-07-15gma500: Add the Oaktrail HDMI supportAlan Cox
This differs enough from the Cedarview HDMI sufficiently to want to keep them separated. We need to sort out the power management for Oaktrail/Moorestown in order to plumb this lot into the register handling logic. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-07-15gma500: Fix cdv warning on unused variableAlan Cox
Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-07-15gma500: skip getting modes via DDC on MoorestownOctavian Purdila
Moorestown does not have a DDC bus, skip getting modes via DDC. This fixes the following bug: BUG: unable to handle kernel NULL pointer dereference at 00000010 IP: [<c1172ff7>] i2c_transfer+0x17/0xb0 *pde = 00000000 Oops: 0000 [#1] Call Trace: [<c1153ae9>] drm_do_probe_ddc_edid+0x59/0x90 [<c1153cb4>] drm_get_edid+0x24/0x250 [<c11805d2>] psb_intel_ddc_get_modes+0x22/0x60 [<c117fe11>] psb_intel_lvds_get_modes+0x21/0x80 Signed-off-by: Octavian Purdila <octavian.purdila@intel.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-07-15gma500: fix compile warnings when CONFIG_BACKLIGHT_CLASS_DEVICE is not definedOctavian Purdila
Signed-off-by: Octavian Purdila <octavian.purdila@intel.com> [Fixed up for other changes, and tidied some existing variable names] Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-07-15gma500: Make crtc count a property of the deviceAlan Cox
Octavian Purdila posted a patch that sets num_crtc to 1 for Moorestown, but Oaktrail has 2 so we need to split Oaktrail/Moorestown more sensibly, and also cope with some other differences later on. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-07-15gma500: remove the legacy PM methodOctavian Purdila
PCI core only prefer one of legacy PM and new PM. And since runtime pm is implemented, which requires the new PM method, we should remove the legacy PM method. Signed-off-by: Octavian Purdila <octavian.purdila@intel.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-07-15gma500: allow the creation of 'stolen' memory objectsAlan Cox
For things like cursors and many kinds of framebuffer set up we are actually best using the stolen memory when possible. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-07-15gma500: add an mmap ioctlAlan Cox
This does the same as the dumb mmap but we want them separated in the ABI in case a future extension to the dumb interface means we can't treat them the same way. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-07-15gma500: Move the 2D operations into DRMAlan Cox
We currently have a test hack framebuffer mode ioctl, turn that into a DRM interface. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-07-15gma500: Cursor interfaceAlan Cox
We need to provide an interface to create additional buffers for the cursor Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-07-15gma500: Fix dependenciesAlan Cox
ACPI Video is used by GMA500 so we need to depend upon it Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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