| Commit message (Collapse) | Author | Age | Files | Lines |
|---|
| |\
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| | |
Pull remoteproc updates from Bjorn Andersson:
"This adds an interface for configuring Qualcomm's "secure SMMU" and
adds support for booting the modem Hexagon on MSM8996.
Two new debugfs entries are added in the remoteproc core to introspect
the list of memory carveouts and the loaded resource table"
* tag 'rproc-v4.15' of git://github.com/andersson/remoteproc:
remoteproc: qcom: Fix error handling paths in order to avoid memory leaks
remoteproc: qcom: Drop pr_err in q6v5_xfer_mem_ownership()
remoteproc: debug: add carveouts list dump feature
remoteproc: debug: add resource table dump feature
remoteproc: qcom: Add support for mss remoteproc on msm8996
remoteproc: qcom: Make secure world call for mem ownership switch
remoteproc: qcom: refactor mss fw image loading sequence
firmware: scm: Add new SCM call API for switching memory ownership
|
| | |
| |
| |
| |
| |
| |
| |
| |
| |
| | |
This patch add support for mss boot on msm8996. Major changes
include initializing mss rproc for msm8996, making appropriate
change for executing mss reset sequence etc.
Tested-and-acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Avaneesh Kumar Dwivedi <akdwived@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
|
| |\ \
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | | |
Pull rpmsg updates from Bjorn Andersson:
- turn RPMSG_VIRTIO into a user selectable config
- fix few bugs in GLINK
- provide the support for specifying initial buffer sizes for GLINK
channels.
* tag 'rpmsg-v4.15' of git://github.com/andersson/remoteproc:
rpmsg: glink: The mbox client knows_txdone
rpmsg: glink: Add missing MODULE_LICENSE
rpmsg: glink: Use best fit intent during tx
rpmsg: glink: Add support to preallocate intents
dt-bindings: soc: qcom: Support GLINK intents
rpmsg: glink: Initialize the "intent_req_comp" completion variable
rpmsg: Allow RPMSG_VIRTIO to be enabled via menuconfig or defconfig
|
| | |/
| |
| |
| |
| |
| |
| |
| |
| |
| |
| | |
Virtual GLINK channels may know what throughput to expect from a
remoteproc. An intent advertises to the remoteproc this channel is
ready to receive data. Allow a channel to define the size and amount of
intents to be prequeued.
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Chris Lew <clew@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
|
| |\ \
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | | |
git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk updates from Stephen Boyd:
"We have two changes to the core framework this time around.
The first being a large change that introduces runtime PM support to
the clk framework. Now we properly call runtime PM operations on the
device providing a clk when the clk is in use. This helps on SoCs
where the clks provided by a device need something to be powered on
before using the clks, like power domains or regulators. It also helps
power those things down when clks aren't in use.
The other core change is a devm API addition for clk providers so we
can get rid of a bunch of clk driver remove functions that are just
doing of_clk_del_provider().
Outside of the core, we have the usual addition of clk drivers and
smattering of non-critical fixes to existing drivers. The biggest diff
is support for Mediatek MT2712 and MT7622 SoCs, but those patches
really just add a bunch of data.
By the way, we're trying something new here where we build the tree up
with topic branches. We plan to work this into our workflow so that we
don't step on each other's toes, and so the fixes branch can be merged
on an as-needed basis.
Summary:
Core:
- runtime PM support for clk providers
- devm API for of_clk_add_hw_provider()
New Drivers:
- Mediatek MT2712 and MT7622
- Renesas R-Car V3M SoC
Updates:
- runtime PM support for Samsung exynos5433/exynos4412 providers
- removal of clkdev aliases on Samsung SoCs
- convert clk-gpio to use gpio descriptors
- various driver cleanups to match kernel coding style
- Amlogic Video Processing Unit VPU and VAPB clks
- sigma-delta modulation for Allwinner audio PLLs
- Allwinner A83t Display clks
- support for the second display unit clock on Renesas RZ/G1E
- suspend/resume support for Renesas R-Car Gen3 CPG/MSSR
- new clock ids for Rockchip rk3188 and rk3368 SoCs
- various 'const' markings on clk_ops structures
- RPM clk support on Qualcomm MSM8996/MSM8660 SoCs"
* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (137 commits)
clk: stm32h7: fix test of clock config
clk: pxa: fix building on older compilers
clk: sunxi-ng: a83t: Fix i2c buses bits
clk: ti: dra7-atl-clock: fix child-node lookups
clk: qcom: common: fix legacy board-clock registration
clk: uniphier: fix DAPLL2 clock rate of Pro5
clk: uniphier: fix parent of miodmac clock data
clk: hi3798cv200: correct parent mux clock for 'clk_sdio0_ciu'
clk: hisilicon: Delete an error message for a failed memory allocation in hisi_register_clkgate_sep()
clk: hi3660: fix incorrect uart3 clock freqency
clk: kona-setup: Delete error messages for failed memory allocations
ARC: clk: fix spelling mistake: "configurarion" -> "configuration"
clk: cdce925: remove redundant check for non-null parent_name
clk: versatile: Improve sizeof() usage
clk: versatile: Delete error messages for failed memory allocations
clk: ux500: Improve sizeof() usage
clk: ux500: Delete error messages for failed memory allocations
clk: spear: Delete error messages for failed memory allocations
clk: ti: Delete error messages for failed memory allocations
clk: mmp: Adjust checks for NULL pointers
...
|
| | |\ \
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | | |
* clk-mediatek:
clk: mediatek: add clock support for MT7622 SoC
clk: mediatek: add clocks dt-bindings required header for MT7622 SoC
clk: mediatek: add the option for determining PLL source clock
dt-bindings: clock: mediatek: document clk bindings for MediaTek MT7622 SoC
clk: mediatek: mark mtk_infrasys_init_early __init
clk: mediatek: Add MT2712 clock support
clk: mediatek: Add dt-bindings for MT2712 clocks
dt-bindings: ARM: Mediatek: Document bindings for MT2712
|
| | | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | | |
This patch adds the binding documentation for apmixedsys, ethsys, hifsys,
infracfg, pericfg, topckgen and audsys for MT7622.
Signed-off-by: Chen Zhong <chen.zhong@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
|
| | | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | | |
This patch adds the binding documentation for apmixedsys, bdpsys,
imgsys, imgsys, infracfg, mcucfg, mfgcfg, mmsys, pericfg, topckgen,
vdecsys and vencsys for Mediatek MT2712.
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Weiyi Lu <weiyi.lu@mediatek.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
|
| | |\ \ \
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | | |
* clk-qcom:
clk: qcom: clk-smd-rpm: add msm8996 rpmclks
clk: qcom: Implement RPM clocks for MSM8660/APQ8060
clk: qcom: Update DT bindings for the MSM8660/APQ8060 RPMCC
clk: qcom: Elaborate on "active" clocks in the RPM clock bindings
clk: qcom: Remove unused RCG ops
|
| | | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | | |
Add all RPM controlled clocks on msm8996 platform
[srini: Fixed various issues with offsets and made names specific to msm8996]
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
|
| | | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | | |
These compatible strings need to be added to extend support
for the RPM CC to cover MSM8660/APQ8060. We also need to add
enumberators to the include file for a few clocks that were
missing.
Cc: devicetree@vger.kernel.org
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
|
| | | |/ /
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | | |
The concept of "active" clocks is just explained in a bried comment in the
device driver, let's explain it a bit more in the device tree bindings
so everyone understands this.
Cc: devicetree@vger.kernel.org
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
|
| | |\ \ \
| | | | |
| | | | |
| | | | |
| | | | |
| | | | | |
* clk-devm-provider:
clk: qcom: common: Migrate to devm_* APIs for resets and clk providers
clk: Add devm_of_clk_add_hw_provider()/del_provider() APIs
|
| | | |/ /
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | | |
Sometimes we only have one of_clk_del_provider() call in driver
error and remove paths, because we're missing a
devm_of_clk_add_hw_provider() API. Introduce the API so we can
convert drivers to use this and potentially reduce the amount of
code needed to remove providers in drivers.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
|
| | |\ \ \
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | | |
git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers into clk-next
Pull Renesas clk driver updates from Geert Uytterhoeven:
- Add support for the second display unit clock on RZ/G1E,
- Add git repository to MAINTAINERS,
- Add suspend/resume support for R-Car Gen3 CPG/MSSR,
- Small fixes and cleanups.
* tag 'clk-renesas-for-v4.15-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers:
clk: renesas: rcar-gen3: Restore R clock during resume
clk: renesas: rcar-gen3: Restore SDHI clocks during resume
clk: renesas: div6: Restore clock state during resume
clk: renesas: cpg-mssr: Add support to restore core clocks during resume
clk: renesas: cpg-mssr: Restore module clocks during resume
MAINTAINERS: Add git repository to Renesas clock driver section
clk: renesas: cpg-mssr: Add du1 clock to R8A7745
clk: renesas: rz: clk-rz is meant for RZ/A1
clk: renesas: r8a77995: Correct parent clock of INTC-AP
clk: renesas: r8a7796: Correct parent clock of INTC-AP
clk: renesas: r8a7795: Correct parent clock of INTC-AP
|
| | | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | | |
The RZ family of Renesas SoCs has several different subfamilies (RZ/A,
RZ/G, RZ/N, and RZ/T). Clarify that the renesas,rz-cpg-clocks DT
bindings and clk-rz driver apply to RZ/A1 only.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Rob Herring <robh@kernel.org>
|
| | |\ \ \ \
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | | |
git://git.kernel.org/pub/scm/linux/kernel/git/snawrocki/clk into clk-next
Pull Samsung clk driver updates from Sylwester Nawrocki:
- An addition of separate driver for the Exynos 4412 ISP CMU, needed
to model and properly handle the clock controller's dependencies
on the ISP power domain.
- Adding __maybe_unused attributes to the exynos5433_cmu_{suspend,
resume} ops to suppress compiler warnings with CONFIG_PM disabled.
* tag 'clk-v4.15-exynos-pm' of git://git.kernel.org/pub/scm/linux/kernel/git/snawrocki/clk:
clk: samsung: Add a separate driver for Exynos4412 ISP clocks
clk: samsung: Add dt bindings for Exynos4412 ISP clock controller
clk: samsung: Instantiate Exynos4412 ISP clocks only when available
clk: samsung: exynos5433: mark PM functions as __maybe_unused
|
| | | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | | |
Some registers for the Exynos 4412 ISP (Camera subsystem) clocks are
located in the ISP power domain. Because those registers are also
located in a different memory region than the main clock controller,
support for them can be provided by a separate clock controller.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
|
| | |\ \ \ \ \
| | | |/ / /
| | |/| | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | | |
git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers into clk-next
Pull Renesas clk driver updates from Geert Uytterhoeven:
- Add support for the new R-Car V3M SoC,
- Small fixes and cleanups.
* tag 'clk-renesas-for-v4.15-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers:
clk: renesas: rcar-gen2: Delete error message for failed memory allocation
clk: renesas: mstp: Delete error messages for failed memory allocations
clk: renesas: cpg-mssr: Add R8A77970 support
dt-bindings: clock: Add R8A77970 CPG core clock definitions
|
| | | | |/ /
| | |/| |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | | |
Add R-Car V3M (R8A77970) Clock Pulse Generator / Module Standby and
Software Reset support, using the CPG/MSSR driver core and the common
R-Car Gen3 code.
Based on the original (and large) patch by Daisuke Matsushita
<daisuke.matsushita.ns@hitachi.com>.
Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
|
| | |\ \ \ \
| | |/ / /
| |/| / /
| | |/ /
| | | |
| | | |
| | | |
| | | |
| | | | |
* clk-pm-runtime:
clk: samsung: exynos-audss: Add support for runtime PM
clk: samsung: exynos-audss: Use local variable for controller's device
clk: samsung: exynos5433: Add support for runtime PM
clk: samsung: Add support for runtime PM
clk: Add support for runtime PM
|
| | | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | | |
This patch adds support for runtime PM to Exynos Audio SubSystem driver to
enable full support for audio power domain on Exynos5 SoCs. The main change
is moving register saving and restoring code from system sleep PM ops to
runtime PM ops and implementing system sleep PM ops with generic
pm_runtime_force_suspend/resume helpers. Runtime PM of the Exynos AudSS
device is managed from clock core depending on the preparation status
of the provided clocks.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/1503302703-13801-6-git-send-email-m.szyprowski@samsung.com
|
| | | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | | |
Add runtime pm support for all clock controller units (CMU), which belong
to power domains and require special handling during on/off operations.
Typically special values has to be written to MUX registers to change
internal clocks parents to OSC clock before turning power off. During such
operation all clocks, which enter CMU has to be enabled to let MUX to
stabilize. Also for each CMU there is one special parent clock, which has
to be enabled all the time when any access to CMU registers is being done.
This patch solves most of the mysterious external abort and freeze issues
caused by a lack of proper parent CMU clock enabled or incorrect turn off
procedure.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Tested-by: Chanwoo Choi <cw00.choi@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/1503302703-13801-4-git-send-email-m.szyprowski@samsung.com
|
| |\ \ \ \
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | | |
git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild misc updates from Masahiro Yamada:
- Clean up and fix RPM package build
- Fix a warning in DEB package build
- Improve coccicheck script
- Improve some semantic patches
* tag 'kbuild-misc-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
docs: dev-tools: coccinelle: delete out of date wiki reference
coccinelle: orplus: reorganize to improve performance
coccinelle: use exists to improve efficiency
builddeb: Pass the kernel:debarch substvar to dpkg-genchanges
Coccinelle: use false positive annotation
coccinelle: fix verbose message about .cocci file being run
coccinelle: grep Options and Requires fields more precisely
Coccinelle: make DEBUG_FILE option more useful
coccinelle: api: detect identical chip data arrays
coccinelle: Improve setup_timer.cocci matching
Coccinelle: setup_timer: improve messages from setup_timer
kbuild: rpm-pkg: do not force -jN in submake
kbuild: rpm-pkg: keep spec file until make mrproper
kbuild: rpm-pkg: fix jobserver unavailable warning
kbuild: rpm-pkg: replace $RPM_BUILD_ROOT with %{buildroot}
kbuild: rpm-pkg: fix build error when CONFIG_MODULES is disabled
kbuild: rpm-pkg: refactor mkspec with here doc
kbuild: rpm-pkg: clean up mkspec
kbuild: rpm-pkg: install vmlinux.bz2 unconditionally
kbuild: rpm-pkg: remove ppc64 specific image handling
|
| | | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | | |
The wiki is no longer available.
Signed-off-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
|
| |\ \ \ \ \
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | | |
Merge more updates from Andrew Morton:
- a bit more MM
- procfs updates
- dynamic-debug fixes
- lib/ updates
- checkpatch
- epoll
- nilfs2
- signals
- rapidio
- PID management cleanup and optimization
- kcov updates
- sysvipc updates
- quite a few misc things all over the place
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (94 commits)
EXPERT Kconfig menu: fix broken EXPERT menu
include/asm-generic/topology.h: remove unused parent_node() macro
arch/tile/include/asm/topology.h: remove unused parent_node() macro
arch/sparc/include/asm/topology_64.h: remove unused parent_node() macro
arch/sh/include/asm/topology.h: remove unused parent_node() macro
arch/ia64/include/asm/topology.h: remove unused parent_node() macro
drivers/pcmcia/sa1111_badge4.c: avoid unused function warning
mm: add infrastructure for get_user_pages_fast() benchmarking
sysvipc: make get_maxid O(1) again
sysvipc: properly name ipc_addid() limit parameter
sysvipc: duplicate lock comments wrt ipc_addid()
sysvipc: unteach ids->next_id for !CHECKPOINT_RESTORE
initramfs: use time64_t timestamps
drivers/watchdog: make use of devm_register_reboot_notifier()
kernel/reboot.c: add devm_register_reboot_notifier()
kcov: update documentation
Makefile: support flag -fsanitizer-coverage=trace-cmp
kcov: support comparison operands collection
kcov: remove pointless current != NULL check
kernel/panic.c: add TAINT_AUX
...
|
| | | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | | |
The updated documentation describes new KCOV mode for collecting
comparison operands.
Link: http://lkml.kernel.org/r/20171011095459.70721-3-glider@google.com
Signed-off-by: Victor Chibotaru <tchibo@google.com>
Signed-off-by: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Andrey Konovalov <andreyknvl@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Alexander Popov <alex.popov@linux.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Vegard Nossum <vegard.nossum@oracle.com>
Cc: Quentin Casasnovas <quentin.casasnovas@oracle.com>
Cc: <syzkaller@googlegroups.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
| | | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | | |
Link: http://lkml.kernel.org/r/CAKW4uUyCi=PnKf3epgFVz8z=1tMtHSOHNm+fdNxrNw3-THvRCA@mail.gmail.com
Signed-off-by: Kangmin Park <l4stpr0gr4m@gmail.com>
Cc: Jiri Kosina <trivial@kernel.org>
Cc: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
| | | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | | |
Fix minor typo.
Fix missing words in explaining parsing of last line number.
Link: http://lkml.kernel.org/r/ebb7ff42-4945-103f-d5b4-f07a6f3343a7@infradead.org
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Jason Baron <jbaron@akamai.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
| | | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | | |
I like _ONCE warnings because it's guaranteed that they don't flood the
log.
During testing I find it useful to reset the state of the once warnings,
so that I can rerun tests and see if they trigger again, or can
guarantee that a test run always hits the same warnings.
This patch adds a debugfs interface to reset all the _ONCE warnings so
that they appear again:
echo 1 > /sys/kernel/debug/clear_warn_once
This is implemented by putting all the warning booleans into a special
section, and clearing it.
[akpm@linux-foundation.org: coding-style fixes]
Link: http://lkml.kernel.org/r/20171017221455.6740-1-andi@firstfloor.org
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Tested-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
| | | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | | |
Right now there is no convenient way to check if a process is being
coredumped at the moment.
It might be necessary to recognize such state to prevent killing the
process and getting a broken coredump. Writing a large core might take
significant time, and the process is unresponsive during it, so it might
be killed by timeout, if another process is monitoring and
killing/restarting hanging tasks.
We're getting a significant number of corrupted coredump files on
machines in our fleet, just because processes are being killed by
timeout in the middle of the core writing process.
We do have a process health check, and some agent is responsible for
restarting processes which are not responding for health check requests.
Writing a large coredump to the disk can easily exceed the reasonable
timeout (especially on an overloaded machine).
This flag will allow the agent to distinguish processes which are being
coredumped, extend the timeout for them, and let them produce a full
coredump file.
To provide an ability to detect if a process is in the state of being
coredumped, we can expose a boolean CoreDumping flag in
/proc/pid/status.
Example:
$ cat core.sh
#!/bin/sh
echo "|/usr/bin/sleep 10" > /proc/sys/kernel/core_pattern
sleep 1000 &
PID=$!
cat /proc/$PID/status | grep CoreDumping
kill -ABRT $PID
sleep 1
cat /proc/$PID/status | grep CoreDumping
$ ./core.sh
CoreDumping: 0
CoreDumping: 1
[guro@fb.com: document CoreDumping flag in /proc/<pid>/status]
Link: http://lkml.kernel.org/r/20170928135357.GA8470@castle.DHCP.thefacebook.com
Link: http://lkml.kernel.org/r/20170920230634.31572-1-guro@fb.com
Signed-off-by: Roman Gushchin <guro@fb.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
| |\ \ \ \ \ \
| | | | | | |
| | | | | | |
| | | | | | |
| | | | | | |
| | | | | | |
| | | | | | |
| | | | | | |
| | | | | | |
| | | | | | |
| | | | | | |
| | | | | | |
| | | | | | |
| | | | | | | |
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull two power management fixes from Rafael Wysocki:
"This is the change making /proc/cpuinfo on x86 report current CPU
frequency in "cpu MHz" again in all cases and an additional one
dealing with an overzealous check in one of the helper routines in the
runtime PM framework"
* tag 'pm-fixes-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
PM / runtime: Drop children check from __pm_runtime_set_status()
x86 / CPU: Always show current CPU frequency in /proc/cpuinfo
|
| | | | | | | |
| | | | | | |
| | | | | | |
| | | | | | |
| | | | | | |
| | | | | | |
| | | | | | |
| | | | | | |
| | | | | | |
| | | | | | |
| | | | | | |
| | | | | | |
| | | | | | |
| | | | | | |
| | | | | | |
| | | | | | |
| | | | | | |
| | | | | | |
| | | | | | |
| | | | | | | |
The check for "active" children in __pm_runtime_set_status(), when
trying to set the parent device status to "suspended", doesn't
really make sense, because in fact it is not invalid to set the
status of a device with runtime PM disabled to "suspended" in any
case. It is invalid to enable runtime PM for a device with its
status set to "suspended" while its child_count reference counter
is nonzero, but the check in __pm_runtime_set_status() doesn't
really cover that situation.
For this reason, drop the children check from __pm_runtime_set_status()
and add a check against child_count reference counters of "suspended"
devices to pm_runtime_enable().
Fixes: a8636c89648a (PM / Runtime: Don't allow to suspend a device with an active child)
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Johan Hovold <johan@kernel.org>
|
| |\ \ \ \ \ \ \
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | | |
Pull amdgpu DC display code for Vega from Dave Airlie:
"This is the pull request for the AMD DC (display code) layer which is
a requirement to program the display engines on the new Vega and Raven
based GPUs. It also contains support for all amdgpu supported GPUs
(CIK, VI, Polaris), which has to be enabled. It is also a kms atomic
modesetting compatible driver (unlike the current in-tree display
code).
I've kept it separate from drm-next because it may have some things
that cause you to reject it.
Background story:
AMD have an internal team creating a shared OS codebase for display at
hw bring up time using information from their hardware teams. This
process doesn't lead to the most Linux friendly/looking code but we
have worked together on cleaning a lot of it up and dealing with
sparse/smatch/checkpatch, and having their team internally adhere to
Linux coding standards.
This tree is a complete history rebased since they started opening it,
we decided not to squash it down as the history may have some value.
Some of the commits therefore might not reach kernel standards, and we
are steadily training people in AMD to better write commit msgs.
There is a major bunch of generated bandwidth calculation and
verification code that comes from their hardware team. On Vega and
before this is float calculations, on Raven (DCN10) this is double
based. They do the required things to do FP in the kernel, and I could
understand this might raise some issues. Rewriting the bandwidth would
be a major undertaken in reverification, it's non-trivial to work out
if a display can handle the complete set of mode information thrown at
it.
Future story:
There is a TODO list with this, and it address most of the remaining
things that would be nice to refine/remove. The DCN10 code is still
under development internally and they push out a lot of patches quite
regularly and are supporting this code base with their display team. I
think we've reached the point where keeping it out of tree is going to
motivate distributions to start carrying the code, so I'd prefer we
get it in tree. I think this code is slightly better than STAGING
quality but not massively so, I'd really like to see that float/double
magic gone and fixed point used, but AMD don't seem to think the
accuracy and revalidation of the code is worth the effort"
* tag 'drm-for-v4.15-amd-dc' of git://people.freedesktop.org/~airlied/linux: (1110 commits)
drm/amd/display: fix MST link training fail division by 0
drm/amd/display: Fix formatting for null pointer dereference fix
drm/amd/display: Remove dangling planes on dc commit state
drm/amd/display: add flip_immediate to commit update for stream
drm/amd/display: Miss register MST encoder cbs
drm/amd/display: Fix warnings on S3 resume
drm/amd/display: use num_timing_generator instead of pipe_count
drm/amd/display: use configurable FBC option in dm
drm/amd/display: fix AZ clock not enabled before program AZ endpoint
amdgpu/dm: Don't use DRM_ERROR in amdgpu_dm_atomic_check
amd/display: Fix potential null dereference in dce_calcs.c
amdgpu/dm: Remove unused forward declaration
drm/amdgpu: Remove unused dc_stream from amdgpu_crtc
amdgpu/dc: Fix double unlock in amdgpu_dm_commit_planes
amdgpu/dc: Fix missing null checks in amdgpu_dm.c
amdgpu/dc: Fix potential null dereferences in amdgpu_dm.c
amdgpu/dc: fix more indentation warnings
amdgpu/dc: handle allocation failures in dc_commit_planes_to_stream.
amdgpu/dc: fix indentation warning from smatch.
amdgpu/dc: fix non-ansi function decls.
...
|
| | |\ \ \ \ \ \ \
| | | | | | | | |
| | | | | | | | |
| | | | | | | | |
| | | | | | | | |
| | | | | | | | |
| | | | | | | | |
| | | | | | | | | |
Pull in drm-next for the object find API changes.
Fix the one place the API crashes.
Signed-off-by: Dave Airlie <airlied@redhat.com>
|
| | |\ \ \ \ \ \ \ \
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | | |
into drm-next
Initial pull request for DC support. We've completed a substantial amount of
the cleanup and restructuring in our TODO. There are a few additional
cleanups that we are continuing to work on, but I don't think there are any
showstoppers remaining. We've tried to maintain most of the history for bisect
purposes. Harry made sure all the commits build. We've enabled DC for vega10
and Raven. Pre-vega10 parts can be enabled via module parameter (amdgpu.dc=1),
but are not enabled by default at this point until we get further testing
upstream.
This code provides atomic modesetting support for DCE8 (CIK), DCE10 (Tonga,
Fiji), DCE11 (CZ, ST, Polaris), DCE12 (vega10), and DCN1 (RV) including
HDMI and DP audio, DP MST, and many other advanced display features.
+
Latest cleanups for DC from you and Harry. Note that there is some
flickering on some older asics with this branch due to a regression in powerplay
that has already been fixed and will be included in my next non-DC pull request
next week.
* 'drm-next-4.15-dc' of git://people.freedesktop.org/~agd5f/linux: (897 commits)
amdgpu/dc: use kref for dc_state.
amdgpu/dc: convert dc_sink to kref.
amdgpu/dc: convert dc_stream_state to kref.
amdgpu/dc: use kref for dc_plane_state.
amdgpu/dc: convert dc_gamma to kref reference counting.
amdgpu/dc: convert dc_transfer to use a kref.
amdgpu/dc: kill a bunch of dead code.
amdgpu/dc: set a bunch of functions to static.
amdgpu/dc: kill some deadcode in dc core.
amdgpu/dc: fix indentation on a couple of returns.
amdgpu/dm: don't use after free.
amdgpu/dc: kfree already checks for NULL.
amdgpu/dc: fix a bunch of misc whitespace.
amdgpu/dc: drop hw_sequencer_types.h
amdgpu/dc: drop dce110_types.h
amdgpu/dc: use kernel ilog2 for log_2.
amdgpu/dc: don't memset after kzalloc.
amdgpu/dc: inline dal grph object id functions.
amdgpu/dc: inline dml_round_to_multiple
amdgpu/dc: rename bios get_image symbol to something more searchable.
...
|
| | | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | | |
Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
|
| |\ \ \ \ \ \ \ \ \ \
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | | |
git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux
Pull thermal management updates from Zhang Rui:
- introduce brcmstb AVS TMON thermal driver (Brian Norris)
- add Rockchip RV1108 support in rockchip thermal driver (Rocky Hao)
- major rework on HISI driver plus additional support of hisi3660
(Daniel Lezcano)
- add nvmem-cells binding on imx6sx (Leonard Crestez)
- fix a NULL pointer dereference on ti thermal driver unloading (Tony
Lindgren)
- improve tmon tool to make it easier to cross-compile tmon (Markus
Mayer)
- add Coffee Lake and Cannon Lake support for intel processor and pch
thermal drivers (Srinivas Pandruvada)
- other small fixes and cleanups (Arvind Yadav, Colin Ian King, Allen
Wild, Nicolin Chen, Baruch SiachNiklas Söderlund, Arnd Bergmann)
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: (44 commits)
thermal: pch: Add Cannon Lake support
thermal: int340x: processor_thermal: Add Coffee Lake support
thermal: int340x: processor_thermal: Add Cannon Lake support
thermal: bxt: remove redundant variable trip
thermal: cpu_cooling: pr_err() strings should end with newlines
thermal: add brcmstb AVS TMON driver
Documentation: devicetree: add binding for Broadcom STB AVS TMON
thermal/drivers/hisi: Add support for hi3660 SoC
thermal/drivers/hisi: Prepare to add support for other hisi platforms
thermal/drivers/hisi: Add platform prefix to function name
thermal/drivers/hisi: Put platform code together
thermal/drivers/qcom-spmi: Use devm_iio_channel_get
thermal/drivers/generic-iio-adc: Switch tz request to devm version
thermal/drivers/step_wise: Fix temperature regulation misbehavior
thermal/drivers/hisi: Use round up step value
thermal/drivers/hisi: Move the clk setup in the corresponding functions
thermal/drivers/hisi: Remove mutex_lock in the code
thermal/drivers/hisi: Remove thermal data back pointer
thermal/drivers/hisi: Convert long to int
thermal/drivers/hisi: Rename and remove unused field
...
|
| | |\ \ \ \ \ \ \ \ \ \ |
|
| | | | |_|_|_|_|_|/ / /
| | |/| | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | | |
On newer imx SOCs accessing OCOTP directly is wrong because the ocotp
clock needs to be enabled first. Add a binding for accessing the same
values through the imx-ocotp nvmem driver using nvmem-cells. This is
similar to other thermal drivers.
The old binding is preserved for compatibility and because it still
works fine on imx6qdl series chips.
In theory this problem could be solved by adding a reference to the
OCOTP clock instead but it is better to hide such details in a specific
nvmem driver.
Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
|
| | | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | | |
Add binding for Broadcom STB thermal.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Markus Mayer <mmayer@broadcom.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
|
| | |/ / / / / / / / /
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | | |
Add a new compatible for thermal founding on RV1108 SoCs.
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Rocky Hao <rocky.hao@rock-chips.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
|
| |\ \ \ \ \ \ \ \ \ \
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | | |
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull cramfs updates from Al Viro:
"Nicolas Pitre's cramfs work"
* 'work.cramfs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
cramfs: rehabilitate it
cramfs: add mmap support
cramfs: implement uncompressed and arbitrary data block positioning
cramfs: direct memory access support
|
| | | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | | |
Update documentation, pointer to latest tools, appoint myself as
maintainer. Given it's been unloved for so long, I don't expect anyone
will protest.
Signed-off-by: Nicolas Pitre <nico@linaro.org>
Tested-by: Chris Brandt <chris.brandt@renesas.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
|
| |\ \ \ \ \ \ \ \ \ \ \
| | | | | | | | | | | |
| | | | | | | | | | | |
| | | | | | | | | | | |
| | | | | | | | | | | |
| | | | | | | | | | | |
| | | | | | | | | | | |
| | | | | | | | | | | |
| | | | | | | | | | | |
| | | | | | | | | | | |
| | | | | | | | | | | |
| | | | | | | | | | | |
| | | | | | | | | | | |
| | | | | | | | | | | |
| | | | | | | | | | | |
| | | | | | | | | | | |
| | | | | | | | | | | |
| | | | | | | | | | | |
| | | | | | | | | | | |
| | | | | | | | | | | |
| | | | | | | | | | | |
| | | | | | | | | | | |
| | | | | | | | | | | |
| | | | | | | | | | | | |
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull misc vfs updates from Al Viro:
"Assorted stuff, really no common topic here"
* 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
vfs: grab the lock instead of blocking in __fd_install during resizing
vfs: stop clearing close on exec when closing a fd
include/linux/fs.h: fix comment about struct address_space
fs: make fiemap work from compat_ioctl
coda: fix 'kernel memory exposure attempt' in fsync
pstore: remove unneeded unlikely()
vfs: remove unneeded unlikely()
stubs for mount_bdev() and kill_block_super() in !CONFIG_BLOCK case
make vfs_ustat() static
do_handle_open() should be static
elf_fdpic: fix unused variable warning
fold destroy_super() into __put_super()
new helper: destroy_unused_super()
fix address space warnings in ipc/
acct.h: get rid of detritus
|
| | | |/ / / / / / / / /
| |/| | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | | |
Explicit locking in the fallback case provides a safe state of the
table. Getting rid of blocking semantics makes __fd_install usable
again in non-sleepable contexts, which easies backporting efforts.
There is a side effect of slightly nicer assembly for the common case
as might_sleep can now be removed.
Signed-off-by: Mateusz Guzik <mguzik@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
|
| |\ \ \ \ \ \ \ \ \ \ \
| |_|_|_|_|_|_|/ / / /
|/| | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | | |
Pull more block layer updates from Jens Axboe:
"A followup pull request, with some parts that either needed a bit more
testing before going in, merge sync, or just later arriving fixes.
This contains:
- Timer related updates from Kees. These were purposefully delayed
since I didn't want to pull in a later v4.14-rc tag to my block
tree.
- ide-cd prep sense buffer fix from Bart. Also delayed, as not to
clash with the late fix we put into 4.14-rc.
- Small BFQ updates series from Luca and Paolo.
- Single nvmet fix from James, fixing a non-functional case there.
- Bio fast clone fix from Michael, which made bcache return the wrong
data for some cases.
- Legacy IO path regression hang fix from Ming"
* 'for-linus' of git://git.kernel.dk/linux-block:
bio: ensure __bio_clone_fast copies bi_partno
nvmet_fc: fix better length checking
block: wake up all tasks blocked in get_request()
block, bfq: move debug blkio stats behind CONFIG_DEBUG_BLK_CGROUP
block, bfq: update blkio stats outside the scheduler lock
block, bfq: add missing invocations of bfqg_stats_update_io_add/remove
doc, block, bfq: update max IOPS sustainable with BFQ
ide: Make ide_cdrom_prep_fs() initialize the sense buffer pointer
md: Convert timers to use timer_setup()
block: swim3: Convert timers to use timer_setup()
block/aoe: Convert timers to use timer_setup()
amifloppy: Convert timers to use timer_setup()
block/floppy: Convert callback to pass timer_list
|
| | | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | | |
BFQ currently creates, and updates, its own instance of the whole
set of blkio statistics that cfq creates. Yet, from the comments
of Tejun Heo in [1], it turned out that most of these statistics
are meant/useful only for debugging. This commit makes BFQ create
the latter, debugging statistics only if the option
CONFIG_DEBUG_BLK_CGROUP is set.
By doing so, this commit also enables BFQ to enjoy a high perfomance
boost. The reason is that, if CONFIG_DEBUG_BLK_CGROUP is not set, then
BFQ has to update far fewer statistics, and, in particular, not the
heaviest to update. To give an idea of the benefits, if
CONFIG_DEBUG_BLK_CGROUP is not set, then, on an Intel i7-4850HQ, and
with 8 threads doing random I/O in parallel on null_blk (configured
with 0 latency), the throughput of BFQ grows from 310 to 400 KIOPS
(+30%). We have measured similar or even much higher boosts with other
CPUs: e.g., +45% with an ARM CortexTM-A53 Octa-core. Our results have
been obtained and can be reproduced very easily with the script in [1].
[1] https://www.spinics.net/lists/linux-block/msg18943.html
Suggested-by: Tejun Heo <tj@kernel.org>
Suggested-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Lee Tibbert <lee.tibbert@gmail.com>
Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Signed-off-by: Luca Miccio <lucmiccio@gmail.com>
Signed-off-by: Paolo Valente <paolo.valente@linaro.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
|
| | | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | | |
bfq invokes various blkg_*stats_* functions to update the statistics
contained in the special files blkio.bfq.* in the blkio controller
groups, i.e., the I/O accounting related to the proportional-share
policy provided by bfq. The execution of these functions takes a
considerable percentage, about 40%, of the total per-request execution
time of bfq (i.e., of the sum of the execution time of all the bfq
functions that have to be executed to process an I/O request from its
creation to its destruction). This reduces the request-processing
rate sustainable by bfq noticeably, even on a multicore CPU. In fact,
the bfq functions that invoke blkg_*stats_* functions cannot be
executed in parallel with the rest of the code of bfq, because both
are executed under the same same per-device scheduler lock.
To reduce this slowdown, this commit moves, wherever possible, the
invocation of these functions (more precisely, of the bfq functions
that invoke blkg_*stats_* functions) outside the critical sections
protected by the scheduler lock.
With this change, and with all blkio.bfq.* statistics enabled, the
throughput grows, e.g., from 250 to 310 KIOPS (+25%) on an Intel
i7-4850HQ, in case of 8 threads doing random I/O in parallel on
null_blk, with the latter configured with 0 latency. We obtained the
same or higher throughput boosts, up to +30%, with other processors
(some figures are reported in the documentation). For our tests, we
used the script [1], with which our results can be easily reproduced.
NOTE. This commit still protects the invocation of blkg_*stats_*
functions with the request_queue lock, because the group these
functions are invoked on may otherwise disappear before or while these
functions are executed. Fortunately, tests without even this lock
show, by difference, that the serialization caused by this lock has a
little impact (at most ~5% of throughput reduction).
[1] https://github.com/Algodev-github/IOSpeed
Tested-by: Lee Tibbert <lee.tibbert@gmail.com>
Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Signed-off-by: Paolo Valente <paolo.valente@linaro.org>
Signed-off-by: Luca Miccio <lucmiccio@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
|
| | | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | | |
We have investigated more deeply the performance of BFQ, in terms of
number of IOPS that can be processed by the CPU when BFQ is used as
I/O scheduler. In more detail, using the script [1], we have measured
the number of IOPS reached on top of a null block device configured
with zero latency, as a function of the workload (sequential read,
sequential write, random read, random write) and of the system (we
considered desktops, laptops and embedded systems).
Basing on the resulting figures, with this commit we update the
current, conservative IOPS range reported in BFQ documentation. In
particular, the documentation now reports, for each of three different
systems, the lowest number of IOPS obtained for that system with the
above test (namely, the value obtained with the workload leading to
the lowest IOPS).
[1] https://github.com/Algodev-github/IOSpeed
Reviewed-by: Lee Tibbert <lee.tibbert@gmail.com>
Signed-off-by: Paolo Valente <paolo.valente@linaro.org>
Signed-off-by: Luca Miccio <lucmiccio@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
|
