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2016-05-06ASoC: da7129: Add missing include of acpi.hMark Brown
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Mark Brown <broonie@kernel.org>
2016-05-06bridge: fix igmp / mld query parsingLinus Lüssing
With the newly introduced helper functions the skb pulling is hidden in the checksumming function - and undone before returning to the caller. The IGMP and MLD query parsing functions in the bridge still assumed that the skb is pointing to the beginning of the IGMP/MLD message while it is now kept at the beginning of the IPv4/6 header. If there is a querier somewhere else, then this either causes the multicast snooping to stay disabled even though it could be enabled. Or, if we have the querier enabled too, then this can create unnecessary IGMP / MLD query messages on the link. Fixing this by taking the offset between IP and IGMP/MLD header into account, too. Fixes: 9afd85c9e455 ("net: Export IGMP/MLD message validation code") Reported-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-06EDAC, ie31200_edac: Add Skylake supportJason Baron
Skylake adjusts some register locations, but otherwise follows the existing model quite closely. I was able to verify that the 'ce_count' increments when 'bad dimms' are used. The accounting of 'ce_count' and 'ue_count' is the primary functionality of interest for us. Tested on Intel(R) Xeon(R) CPU E3-1260L v5 @ 2.90GHz. Signed-off-by: Jason Baron <jbaron@akamai.com> Acked-by: Tony Luck <tony.luck@intel.com> Cc: linux-edac <linux-edac@vger.kernel.org> Link: http://lkml.kernel.org/r/1462547927-22679-1-git-send-email-jbaron@akamai.com Signed-off-by: Borislav Petkov <bp@suse.de>
2016-05-06mtd: nand_bch: fix spelling of "probably"Brian Norris
Signed-off-by: Brian Norris <computersforpeace@gmail.com> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
2016-05-06ASoC: pxa: Fix module autoload for platform driversAndrea Adami
These platform drivers are lacking MODULE_ALIAS so module autoloading doesn't work. Tested on corgi and poodle with kernel 4.4. Signed-off-by: Andrea Adami <andrea.adami@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2016-05-06GFS2: Refactor gfs2_remove_from_journalBob Peterson
This patch makes two simple changes to function gfs2_remove_from_journal. First, it removes the parameter that specifies the transaction. Since it's always passed in as current->journal_info, we might as well set that in the function rather than passing it in. Second, it changes the meta parameter to use an enum to make the code more clear. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Acked-by: Steven Whitehouse <swhiteho@redhat.com>
2016-05-06perf trace: Move futex_op beautifier to tools/perf/trace/beauty/Arnaldo Carvalho de Melo
To reduce the size of builtin-trace.c. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-vb8dpy7bptkf219q5c25ulfp@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-05-06perf trace: Move open_flags beautifier to tools/perf/trace/beauty/Arnaldo Carvalho de Melo
To reduce the size of builtin-trace.c. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-jt293541hv9od7gqw6lilioh@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-05-06perf trace: Move signum beautifier to tools/perf/trace/beauty/Arnaldo Carvalho de Melo
To reduce the size of builtin-trace.c. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-qecqxwwtreio6eaatfv58yq5@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-05-06perf stat: Add extra output of counter values with -vvAndi Kleen
Add debug output of raw counter values per CPU when perf stat -v is specified, together with their cpu numbers. This is very useful to debug problems with per core counters, where we can normally only see aggregated values. v2: Make it depend on -vv, not -v Signed-off-by: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1461787251-6702-12-git-send-email-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-05-06perf script: Update export-to-postgresql to support callchain exportChris Phlipot
Update the export-to-postgresql.py to support the newly introduced callchain export. callchains are added into the existing call_paths table and can now be associated with samples when the "callpaths" commandline option is used with the script. Ex.: $ perf script -s export-to-postgresql.py example_db all callchains Includes the following changes to enable callchain export via the python export APIs: - Add the "callchains" commandline option, which is used to enable callchain export by setting the perf_db_export_callchains global - Add perf_db_export_callchains checks for call_path table creation and population. - Add call_path_id to samples_table to conform with the new API example usage and output using a small test app: test_app.c: volatile int x = 0; void inc_x_loop() { int i; for(i=0; i<100000000; i++) x++; } void a() { inc_x_loop(); } void b() { inc_x_loop(); } int main() { a(); b(); return 0; } example usage: $ gcc -g -O0 test_app.c $ perf record --call-graph=dwarf ./a.out [ perf record: Woken up 77 times to write data ] [ perf record: Captured and wrote 19.373 MB perf.data (2404 samples) ] $ perf script -s scripts/python/export-to-postgresql.py example_db all callchains $ psql example_db example_db=# SELECT (SELECT name FROM symbols WHERE id = cps.symbol_id) as symbol, (SELECT name FROM symbols WHERE id = (SELECT symbol_id from call_paths where id = cps.parent_id)) as parent_symbol, sum(period) as event_count FROM samples join call_paths as cps on call_path_id = cps.id GROUP BY cps.id,evsel_id ORDER BY event_count DESC LIMIT 5; symbol | parent_symbol | event_count ------------------+--------------------------+------------- inc_x_loop | a | 734250982 inc_x_loop | b | 731028057 unknown | unknown | 1335858 task_tick_fair | scheduler_tick | 1238842 update_wall_time | tick_do_update_jiffies64 | 650373 (5 rows) The above data shows total "self time" in cycles for each call path that was sampled. It is intended to demonstrate how it accounts separately for the two ways to reach the "inc_x_loop" function(via "a" and "b"). Recursive common table expressions can be used as well to get cumulative time spent in a function as well, but that is beyond the scope of this basic example. Signed-off-by: Chris Phlipot <cphlipot0@gmail.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1461831551-12213-7-git-send-email-cphlipot0@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-05-06perf script: Expose usage of the callchain db export via the python apiChris Phlipot
This change allows python scripts to be able to utilize the recent changes to the db export api allowing the export of call_paths derived from sampled callchains. These call paths are also now associated with the samples from which they were derived. - This feature is enabled by setting "perf_db_export_callchains" to true - When enabled, samples that have callchain information will have the callchains exported via call_path_table - The call_path_id field is added to sample_table to enable association of samples with the corresponding callchain stored in the call paths table. A call_path_id of 0 will be exported if there is no corresponding callchain. - When "perf_db_export_callchains" and "perf_db_export_calls" are both set to True, the call path root data structure will be shared. This prevents duplicating of data and call path ids that would result from building two separate call path trees in memory. - The call_return_processor structure definition was relocated to the header file to make its contents visible to db-export.c. This enables the sharing of call path trees between the two features, as mentioned above. This change is visible to python scripts using the python db export api. The change is backwards compatible with scripts written against the previous API, assuming that the scripts model the sample_table function after the one in export-to-postgresql.py script by allowing for additional arguments to be added in the future. ie. using *x as the final argument of the sample_table function. Signed-off-by: Chris Phlipot <cphlipot0@gmail.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1461831551-12213-6-git-send-email-cphlipot0@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-05-06perf script: Add call path id to exported sample in db exportChris Phlipot
The exported sample now contains a reference to the call_path_id that represents its callchain. While callchains themselves are nice to have, being able to associate them with samples makes them much more useful, and can allow for such things as determining how much cumulative time is spent in a particular function. This information is normally possible to get from the call return processor. However, when doing normal sampling, call/return information is not available, thus necessitating the need for associating samples directly with call paths. This commit include changes to db-export layer to make this information available for subsequent patches in this change set, but by itself, does not make any changes visible to the user. Signed-off-by: Chris Phlipot <cphlipot0@gmail.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1461831551-12213-5-git-send-email-cphlipot0@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-05-06perf script: Enable db export to output sampled callchainsChris Phlipot
This change enables the db export api to export callchains. This is accomplished by adding callchains obtained from samples to the call_path_root structure and exporting them via the current call path export API. While the current API does support exporting call paths, this is not supported when sampling. This commit addresses that missing feature by allowing the export of call paths when callchains are present in samples. Summary: - This feature is activated by initializing the call_path_root member inside the db_export structure to a non-null value. - Callchains are resolved with thread__resolve_callchain() and then stored and exported by adding a call path under call path root. - Symbol and DSO for each callchain node are exported via db_ids_from_al() This commit puts in place infrastructure to be used by subsequent commits, and by itself, does not introduce any user-visible changes. Signed-off-by: Chris Phlipot <cphlipot0@gmail.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1461831551-12213-4-git-send-email-cphlipot0@gmail.com [ Made adjustments suggested by Adrian Hunter, see thread via this cset's Link: tag ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-05-06perf tools: Refactor code to move call path handling out of thread-stackChris Phlipot
Move the call path handling code out of thread-stack.c and thread-stack.h to allow other components that are not part of thread-stack to create call paths. Summary: - Create call-path.c and call-path.h and add them to the build. - Move all call path related code out of thread-stack.c and thread-stack.h and into call-path.c and call-path.h. - A small subset of structures and functions are now visible through call-path.h, which is required for thread-stack.c to continue to compile. This change is a prerequisite for subsequent patches in this change set and by itself contains no user-visible changes. Signed-off-by: Chris Phlipot <cphlipot0@gmail.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1461831551-12213-3-git-send-email-cphlipot0@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-05-06ath10k: release pre_cal_file while unloading driverRajkumar Manoharan
Failing to release pre_cal_file caldata on deinit causes memory leak. Fixes: b131129d9657 ("ath10k: fix calibration init sequence of qca99x0") Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2016-05-06ath10k: update bss channel survey informationRajkumar Manoharan
During hw scan, firmware sends two channel information events (pre- complete, complete) to host for each channel change. The snap shot of cycle counters (rx_clear and total) between these two events are given for survey dump. In order to get latest survey statistics of all channels, a scan request has to be issued. In general, an AP DUT is brought up, it won't leave BSS channel except few cases like overlapping bss or radar detection. So survey statistics of bss channel is always referring to older data that are collected before starting AP (either ACS/OBSS scan). To collect latest survey information from target, firmware provides WMI interface to read cycle counters from hardware. For each survey dump request, BSS channel cycle counters are read and cleared in hardware. This makes sure that behavior is in align with ath9k survey report. So survey dump always gives snap shot of cycle counters b/w two survey requests. Signed-off-by: Yanbo Li <yanbol@qca.qualcomm.com> Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2016-05-06ath10k: handle pdev_chan_info wmi eventRajkumar Manoharan
Add handler to process bss channel information wmi event that will be received upon sending pdev_chan_info_request wmi command. Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2016-05-06ath10k: implement wmi_pdev_bss_chan_info_requestRajkumar Manoharan
Add WMI ops to send pdev_bss_chan_info_request command to target. This command will be used to retrieve updated cycle counters and noise floor value of current operating channel (bss channel). Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2016-05-06ath10k: add pdev bss channel info wmi definitionsRajkumar Manoharan
Add WMI definitions for pdev bss channel information request and event. Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2016-05-06ath10k: fix kernel panic, move arvifs list head init before htt initAnilkumar Kolli
It is observed that while loading and unloading ath10k modules in an infinite loop, before ath10k_core_start() completion HTT rx frames are received, while processing these frames, dereferencing the arvifs list code is getting hit before initilizing the arvifs list, causing a kernel panic. This patch initilizes the arvifs list before initilizing htt. Fixes the below issue: [<bf88b058>] (ath10k_htt_rx_pktlog_completion_handler+0x278/0xd08 [ath10k_core]) [<bf88b058>] (ath10k_htt_rx_pktlog_completion_handler [ath10k_core]) [<bf88c0dc>] (ath10k_htt_txrx_compl_task+0x5f4/0xeb0 [ath10k_core]) [<bf88c0dc>] (ath10k_htt_txrx_compl_task [ath10k_core]) [<c0234100>] (tasklet_action+0x8c/0xec) [<c0234100>] (tasklet_action) [<c02337c0>] (__do_softirq+0xf8/0x228) [<c02337c0>] (__do_softirq) [<c0233920>] (run_ksoftirqd+0x30/0x90) Code: e5954ad8 e2899008 e1540009 0a00000d (e5943008) ---[ end trace 71de5c2e011dbf56 ]--- Kernel panic - not syncing: Fatal exception in interrupt Fixes: 500ff9f9389d ("ath10k: implement chanctx API") Cc: <stable@vger.kernel.org> Signed-off-by: Anilkumar Kolli <akolli@qti.qualcomm.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2016-05-06ath10k: move spectral related structures under ath10k debugfsMohammed Shafi Shajakhan
Spectral related structures are accessed / modified only if ath10k debugfs is enabled, so it makes more sense to move them under ATH10K_DEBUGFS Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qti.qualcomm.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2016-05-06ath10k: remove VHT capabilities from 2.4GHzJohannes Berg
According to the spec, VHT doesn't exist in 2.4GHz. There are vendor extensions to allow a subset of VHT to work (notably 256-QAM), but since mac80211 doesn't support those advertising VHT capability on 2.4GHz leads to the behaviour of reporting VHT capabilities but not being able to use any of them due to mac80211's code requiring 80 MHz support. Remove the VHT capabilities from 2.4GHz for now. If mac80211 gets extended to use the (likely Broadcom) vendor IEs for it and handles the lack of 80 MHz support, it can be added back. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2016-05-06clk: mediatek: remove hdmitx_dig_cts from TOP clocksPhilipp Zabel
The hdmitx_dig_cts clock signal is not a child of tvdpll_445p5m, but is routed out of the HDMI PHY module. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Acked-by: Stephen Boyd <sboyd@codeaurora.org>
2016-05-06clk: mediatek: Add hdmi_ref HDMI PHY PLL reference clock outputPhilipp Zabel
The configurable hdmi_ref output of the PLL block is derived from the tvdpll_594m clock signal via a configurable PLL post-divider. It is used as the PLL reference input to the HDMI PHY module. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Acked-by: James Liao <jamesjj.liao@mediatek.com> Acked-by: Stephen Boyd <sboyd@codeaurora.org>
2016-05-06clk: mediatek: make dpi0_sel propagate rate changesPhilipp Zabel
This mux is supposed to select a fitting divider after the PLL is already set to the correct rate. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Acked-by: James Liao <jamesjj.liao@mediatek.com> Acked-by: Stephen Boyd <sboyd@codeaurora.org>
2016-05-06drm/mediatek: Add DPI sub driverJie Qiu
Add DPI connector/encoder to support HDMI output via the attached HDMI bridge. Signed-off-by: Jie Qiu <jie.qiu@mediatek.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2016-05-06drm/mediatek: Add DSI sub driverCK Hu
This patch add a drm encoder/connector driver for the MIPI DSI function block of the Mediatek display subsystem and a phy driver for the MIPI TX D-PHY control module. Signed-off-by: Jitao Shi <jitao.shi@mediatek.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2016-05-06drm/mediatek: Add DRM Driver for Mediatek SoC MT8173.CK Hu
This patch adds an initial DRM driver for the Mediatek MT8173 DISP subsystem. It currently supports two fixed output streams from the OVL0/OVL1 sources to the DSI0/DPI0 sinks, respectively. Signed-off-by: CK Hu <ck.hu@mediatek.com> Signed-off-by: YT Shen <yt.shen@mediatek.com> Signed-off-by: Daniel Kurtz <djkurtz@chromium.org> Signed-off-by: Bibby Hsieh <bibby.hsieh@mediatek.com> Signed-off-by: Mao Huang <littlecvr@chromium.org> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2016-05-06drm/i915: Correctly refcount connectors in hw state readouDaniel Vetter
This was forgotten when adding the the refcounting to drm_connector_state. v2: Don't forget to unreference existing connectors. This isn't relevant on driver load, but this code also runs on resume, and there we already have an atomic state. Spotted by Chris Wilson. Cc: Gabriel Feceoru <gabriel.feceoru@intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Marius Vlad <marius.c.vlad@intel.com> Cc: Dave Airlie <airlied@redhat.com> Fixes: d2307dea14a4 ("drm/atomic: use connector references (v3)") Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/1462541943-19620-1-git-send-email-daniel.vetter@ffwll.ch
2016-05-06drm/panel: Flesh out kerneldocThierry Reding
Write more complete kerneldoc comments for the DRM panel API and integrate the helpers in the DRM DocBook reference. Signed-off-by: Thierry Reding <treding@nvidia.com>drm/panel: Add helper for simple panel connector Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/20160506140137.GA4641@ulmo.ba.sec
2016-05-06ARM: dts: exynos: Add interrupt line to MAX8997 PMIC on exynos4210-tratsMarek Szyprowski
MAX8997 PMIC requires interrupt and fails probing without it. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Fixes: d105f0b1215d ("ARM: dts: Add basic dts file for Samsung Trats board") Cc: <stable@vger.kernel.org> [k.kozlowski: Write commit message, add CC-stable] Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
2016-05-06ARM: dts: exynos: Fix regulator name to avoid forbidden character on ↵Marek Szyprowski
exynos4210-trats The usage of slash character causes failure when creating regulator debugfs entry. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> [k.kozlowski: Write commit message] Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
2016-05-06ARM: dts: exynos: Add MFC memory banks for Peach boardsJavier Martinez Canillas
The MFC nodes with the memory regions reserved for memory allocations are missing in the Exynos5420 Peach Pit and Exynos5800 Peach Pi DTS. This causes the s5p-mfc driver probe to fail with the following error: [ 4.140647] s5p_mfc_alloc_memdevs:1072: Failed to declare coherent memory for MFC device [ 4.216163] s5p-mfc: probe of 11000000.codec failed with error -12 Add the missing nodes so the driver probes and the {en,de}coder video nodes are registered correctly: [ 4.096277] s5p-mfc 11000000.codec: decoder registered as /dev/video4 [ 4.102282] s5p-mfc 11000000.codec: encoder registered as /dev/video5 Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
2016-05-06ARM: at91: sama5: Update defconfigMarek Vasut
Enable CGROUPS support, so we can boot userspace that uses systemd on top of kernel configured using this defconfig. The systemd userspace depends on cgroups and without them, it dies in mysterious ways. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Ludovic Desroches <ludovic.desroches@atmel.com> Cc: Alexandre Belloni <alexandre.belloni@free-electrons.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2016-05-06ARM: dts: at91: sama5d4: add trng nodeMike Williams
Add node to support SAMA5D4 hardware random number generator. Signed-off-by: Mike Williams <mike@mikebwilliams.com> [nicolas.ferre@atmel.com: reduce the register map size] Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2016-05-06ARM: dts: at91: sama5d3: add trng nodeMike Williams
Add node to support SAMA5D3 hardware random number generator. Signed-off-by: Mike Williams <mike@mikebwilliams.com> [nicolas.ferre@atmel.com: reduce the register map size] Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2016-05-06ARM: dts: at91: sama5d2: add trng nodeMike Williams
Add node to support SAMA5D2 hardware random number generator. Signed-off-by: Mike Williams <mike@mikebwilliams.com> [nicolas.ferre@atmel.com: reduce the register map size] Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2016-05-06ARM: dts: at91: at91sam9g45 family: reduce the trng register map sizeNicolas Ferre
No need to map 0x4000 bytes for the TRNG device: reduce it to 0x100. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2016-05-06btrfs: don't force mounts to wait for cleaner_kthread to delete one or more ↵Zygo Blaxell
subvolumes During a mount, we start the cleaner kthread first because the transaction kthread wants to wake up the cleaner kthread. We start the transaction kthread next because everything in btrfs wants transactions. We do reloc recovery in the thread that was doing the original mount call once the transaction kthread is running. This means that the cleaner kthread could already be running when reloc recovery happens (e.g. if a snapshot delete was started before a crash). Relocation does not play well with the cleaner kthread, so a mutex was added in commit 5f3164813b90f7dbcb5c3ab9006906222ce471b7 "Btrfs: fix race between balance recovery and root deletion" to prevent both from being active at the same time. If the cleaner kthread is already holding the mutex by the time we get to btrfs_recover_relocation, the mount will be blocked until at least one deleted subvolume is cleaned (possibly more if the mount process doesn't get the lock right away). During this time (which could be an arbitrarily long time on a large/slow filesystem), the mount process is stuck and the filesystem is unnecessarily inaccessible. Fix this by locking cleaner_mutex before we start cleaner_kthread, and unlocking the mutex after mount no longer requires it. This ensures that the mounting process will not be blocked by the cleaner kthread. The cleaner kthread is already prepared for mutex contention and will just go to sleep until the mutex is available. Signed-off-by: Zygo Blaxell <ce3g8jdj@umail.furryterror.org> Reviewed-by: Filipe Manana <fdmanana@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
2016-05-06btrfs: ioctl: reorder exclusive op check in RM_DEVDavid Sterba
Move the op exclusivity check before the other code (same as in ADD_DEV). Signed-off-by: David Sterba <dsterba@suse.com>
2016-05-06btrfs: add write protection to SET_FEATURES ioctlDavid Sterba
Perform the want_write check if we get far enough to do any writes. Signed-off-by: David Sterba <dsterba@suse.com>
2016-05-06btrfs: fix lock dep warning move scratch super outside of chunk_mutexAnand Jain
Move scratch super outside of the chunk lock to avoid below lockdep warning. The better place to scratch super is in the function btrfs_rm_dev_replace_free_srcdev() just before free_device, which is outside of the chunk lock as well. To reproduce: (fresh boot) mkfs.btrfs -f -draid5 -mraid5 /dev/sdc /dev/sdd /dev/sde mount /dev/sdc /btrfs dd if=/dev/zero of=/btrfs/tf1 bs=4096 count=100 (get devmgt from https://github.com/asj/devmgt.git) devmgt detach /dev/sde dd if=/dev/zero of=/btrfs/tf1 bs=4096 count=100 sync btrfs replace start -Brf 3 /dev/sdf /btrfs <-- devmgt attach host7 ====================================================== [ INFO: possible circular locking dependency detected ] 4.6.0-rc2asj+ #1 Not tainted --------------------------------------------------- btrfs/2174 is trying to acquire lock: (sb_writers){.+.+.+}, at: [<ffffffff812449b4>] __sb_start_write+0xb4/0xf0 but task is already holding lock: (&fs_info->chunk_mutex){+.+.+.}, at: [<ffffffffa05c5f55>] btrfs_dev_replace_finishing+0x145/0x980 [btrfs] which lock already depends on the new lock. Chain exists of: sb_writers --> &fs_devs->device_list_mutex --> &fs_info->chunk_mutex Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&fs_info->chunk_mutex); lock(&fs_devs->device_list_mutex); lock(&fs_info->chunk_mutex); lock(sb_writers); *** DEADLOCK *** -> #0 (sb_writers){.+.+.+}: [<ffffffff810e6415>] __lock_acquire+0x1bc5/0x1ee0 [<ffffffff810e707e>] lock_acquire+0xbe/0x210 [<ffffffff810df49a>] percpu_down_read+0x4a/0xa0 [<ffffffff812449b4>] __sb_start_write+0xb4/0xf0 [<ffffffff81265534>] mnt_want_write+0x24/0x50 [<ffffffff812508a2>] path_openat+0x952/0x1190 [<ffffffff81252451>] do_filp_open+0x91/0x100 [<ffffffff8123f5cc>] file_open_name+0xfc/0x140 [<ffffffff8123f643>] filp_open+0x33/0x60 [<ffffffffa0572bb6>] update_dev_time+0x16/0x40 [btrfs] [<ffffffffa057f60d>] btrfs_scratch_superblocks+0x5d/0xb0 [btrfs] [<ffffffffa057f70e>] btrfs_rm_dev_replace_remove_srcdev+0xae/0xd0 [btrfs] [<ffffffffa05c62c5>] btrfs_dev_replace_finishing+0x4b5/0x980 [btrfs] [<ffffffffa05c6ae8>] btrfs_dev_replace_start+0x358/0x530 [btrfs] Signed-off-by: Anand Jain <anand.jain@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
2016-05-06btrfs: Fix BUG_ON condition in scrub_setup_recheck_block()Ashish Samant
pagev array in scrub_block{} is of size SCRUB_MAX_PAGES_PER_BLOCK. page_index should be checked with the same to trigger BUG_ON(). Signed-off-by: Ashish Samant <ashish.samant@oracle.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
2016-05-06Btrfs: remove BUG_ON()'s in btrfs_map_blockJosef Bacik
btrfs_map_block can go horribly wrong in the face of fs corruption, lets agree to not be assholes and panic at any possible chance things are all fucked up. Signed-off-by: Josef Bacik <jbacik@fb.com> [ removed type casts ] Signed-off-by: David Sterba <dsterba@suse.com>
2016-05-06Btrfs: fix divide error upon chunk's stripe_lenLiu Bo
The struct 'map_lookup' uses type int for @stripe_len, while btrfs_chunk_stripe_len() can return a u64 value, and it may end up with @stripe_len being undefined value and it can lead to 'divide error' in __btrfs_map_block(). This changes 'map_lookup' to use type u64 for stripe_len, also right now we only use BTRFS_STRIPE_LEN for stripe_len, so this adds a valid checker for BTRFS_STRIPE_LEN. Reported-by: Vegard Nossum <vegard.nossum@oracle.com> Reported-by: Quentin Casasnovas <quentin.casasnovas@oracle.com> Signed-off-by: Liu Bo <bo.li.liu@oracle.com> Reviewed-by: David Sterba <dsterba@suse.com> [ folded division fix to scrub_raid56_parity ] Signed-off-by: David Sterba <dsterba@suse.com>
2016-05-06btrfs: sysfs: protect reading label by lockDavid Sterba
If the label setting ioctl races with sysfs label handler, we could get mixed result in the output, part old part new. We should either get the old or new label. The chances to hit this race are low. Signed-off-by: David Sterba <dsterba@suse.com>
2016-05-06btrfs: add check to sysfs handler of labelDavid Sterba
Add a sanity check for the fs_info as we will dereference it, similar to what the 'store features' handler does. Signed-off-by: David Sterba <dsterba@suse.com>
2016-05-06btrfs: add read-only check to sysfs handler of featuresDavid Sterba
We don't want to trigger the change on a read-only filesystem, similar to what the label handler does. Signed-off-by: David Sterba <dsterba@suse.cz>
2016-05-06btrfs: reuse existing variable in scrub_stripe, reduce stack usageDavid Sterba
The key variable occupies 17 bytes, the key_start is used once, we can simply reuse existing 'key' for that purpose. As the key is not a simple type, compiler doest not do it on itself. Signed-off-by: David Sterba <dsterba@suse.com>
generated by cgit (git 2.34.1) at 2025-10-03 14:44:53 +0000