forked from Minki/linux
fda201a973
1058072 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Dmitry Baryshkov
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fda201a973 |
drm/msm/dpu: drop dpu_csc_cfg from dpu_plane
Simplify code surrounding CSC table setup by removing struct dpu_csc_cfg pointer from dpu_plane and getting it directly at the CSC setup time. Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: Abhinav Kumar <abhinavk@codeaurora.org> Link: https://lore.kernel.org/r/20210930140002.308628-8-dmitry.baryshkov@linaro.org Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Rob Clark <robdclark@chromium.org> |
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Dmitry Baryshkov
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0782bdc4b2 |
drm/msm/dpu: move dpu_hw_pipe_cfg out of struct dpu_plane
struct dpu_hw_pipe_cfg represents an interim state during atomic update/color fill, so move it out of struct dpu_plane. Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: Abhinav Kumar <abhinavk@codeaurora.org> Link: https://lore.kernel.org/r/20210930140002.308628-6-dmitry.baryshkov@linaro.org Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Rob Clark <robdclark@chromium.org> |
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Dmitry Baryshkov
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53c064a1ab |
drm/msm/dpu: remove stage_cfg from struct dpu_crtc
The stage_cfg is not used outside of _dpu_crtc_blend_setup(), so remove the temporary config from global struct. Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: Abhinav Kumar <abhinavk@codeaurora.org> Link: https://lore.kernel.org/r/20210930140002.308628-5-dmitry.baryshkov@linaro.org Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Rob Clark <robdclark@chromium.org> |
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Dmitry Baryshkov
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92709c02c9 |
drm/msm/dpu: drop pipe_name from struct dpu_plane
Use plane->name instead of artificial pipe_name. Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: Abhinav Kumar <abhinavk@codeaurora.org> Link: https://lore.kernel.org/r/20210930140002.308628-4-dmitry.baryshkov@linaro.org Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Rob Clark <robdclark@chromium.org> |
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Dmitry Baryshkov
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b243c8c015 |
drm/msm/dpu: remove pipe_qos_cfg from struct dpu_plane
The pipe_qos_cfg is used only in _dpu_plane_set_qos_ctrl(), so remove it from the dpu_plane struct and allocate it on stack when necessary. Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: Abhinav Kumar <abhinavk@codeaurora.org> Link: https://lore.kernel.org/r/20210930140002.308628-3-dmitry.baryshkov@linaro.org Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Rob Clark <robdclark@chromium.org> |
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Dmitry Baryshkov
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44aab22d4d |
drm/msm/dpu: move LUT levels out of QOS config
LUT levels are setup outside of setup_qos_ctrl, so remove them from the struct dpu_hw_pipe_qos_cfg. Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: Abhinav Kumar <abhinavk@codeaurora.org> Link: https://lore.kernel.org/r/20210930140002.308628-2-dmitry.baryshkov@linaro.org Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Rob Clark <robdclark@chromium.org> |
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Arnd Bergmann
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afece15a68 |
drm: msm: fix building without CONFIG_COMMON_CLK
When CONFIG_COMMON_CLOCK is disabled, the 8996 specific
phy code is left out, which results in a link failure:
ld: drivers/gpu/drm/msm/hdmi/hdmi_phy.o:(.rodata+0x3f0): undefined reference to `msm_hdmi_phy_8996_cfg'
This was only exposed after it became possible to build
test the driver without the clock interfaces.
Make COMMON_CLK a hard dependency for compile testing,
and simplify it a little based on that.
Fixes:
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Rob Clark
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e4840d537c |
drm/msm: Do hw_init() before capturing GPU state
In particular, we need to ensure all the necessary blocks are switched
to 64b mode (a5xx+) otherwise the high bits of the address of the BO to
snapshot state into will be ignored, resulting in:
*** gpu fault: ttbr0=0000000000000000 iova=0000000000012000 dir=READ type=TRANSLATION source=CP (0,0,0,0)
platform 506a000.gmu: [drm:a6xx_gmu_set_oob] *ERROR* Timeout waiting for GMU OOB set BOOT_SLUMBER: 0x0
Fixes:
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Douglas Anderson
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d03fcc1de0 |
drm/msm/dp: Avoid unpowered AUX xfers that caused crashes
If you happened to try to access `/dev/drm_dp_aux` devices provided by the MSM DP AUX driver too early at bootup you could go boom. Let's avoid that by only allowing AUX transfers when the controller is powered up. Specifically the crash that was seen (on Chrome OS 5.4 tree with relevant backports): Kernel panic - not syncing: Asynchronous SError Interrupt CPU: 0 PID: 3131 Comm: fwupd Not tainted 5.4.144-16620-g28af11b73efb #1 Hardware name: Google Lazor (rev3+) with KB Backlight (DT) Call trace: dump_backtrace+0x0/0x14c show_stack+0x20/0x2c dump_stack+0xac/0x124 panic+0x150/0x390 nmi_panic+0x80/0x94 arm64_serror_panic+0x78/0x84 do_serror+0x0/0x118 do_serror+0xa4/0x118 el1_error+0xbc/0x160 dp_catalog_aux_write_data+0x1c/0x3c dp_aux_cmd_fifo_tx+0xf0/0x1b0 dp_aux_transfer+0x1b0/0x2bc drm_dp_dpcd_access+0x8c/0x11c drm_dp_dpcd_read+0x64/0x10c auxdev_read_iter+0xd4/0x1c4 I did a little bit of tracing and found that: * We register the AUX device very early at bootup. * Power isn't actually turned on for my system until hpd_event_thread() -> dp_display_host_init() -> dp_power_init() * You can see that dp_power_init() calls dp_aux_init() which is where we start allowing AUX channel requests to go through. In general this patch is a bit of a bandaid but at least it gets us out of the current state where userspace acting at the wrong time can fully crash the system. * I think the more proper fix (which requires quite a bit more changes) is to power stuff on while an AUX transfer is happening. This is like the solution we did for ti-sn65dsi86. This might be required for us to move to populating the panel via the DP-AUX bus. * Another fix considered was to dynamically register / unregister. I tried that at <https://crrev.com/c/3169431/3> but it got ugly. Currently there's a bug where the pm_runtime() state isn't tracked properly and that causes us to just keep registering more and more. Signed-off-by: Douglas Anderson <dianders@chromium.org> Reviewed-by: Kuogee Hsieh <quic_khsieh@quicinc.com> Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com> Link: https://lore.kernel.org/r/20211109100403.1.I4e23470d681f7efe37e2e7f1a6466e15e9bb1d72@changeid Signed-off-by: Rob Clark <robdclark@chromium.org> |
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Philip Chen
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cd92cc187c |
drm/msm/dsi: set default num_data_lanes
If "data_lanes" property of the dsi output endpoint is missing in the DT, num_data_lanes would be 0 by default, which could cause dsi_host_attach() to fail if dsi->lanes is set to a non-zero value by the bridge driver. According to the binding document of msm dsi controller, the input/output endpoint of the controller is expected to have 4 lanes. So let's set num_data_lanes to 4 by default. Signed-off-by: Philip Chen <philipchen@chromium.org> Reviewed-by: Douglas Anderson <dianders@chromium.org> Reviewed-by: Stephen Boyd <swboyd@chromium.org> Link: https://lore.kernel.org/r/20211030100812.1.I6cd9af36b723fed277d34539d3b2ba4ca233ad2d@changeid Signed-off-by: Rob Clark <robdclark@chromium.org> |
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Rob Clark
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5dbe2711e4 |
drm/msm/gpu: Fix check for devices without devfreq
Looks like |
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Rob Clark
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26b6f1c870 |
drm/msm/gpu: Fix idle_work time
This was supposed to be a relative timer, not absolute.
Fixes:
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Akhil P Oommen
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9ba873e66e |
drm/msm/a6xx: Fix uinitialized use of gpu_scid
Avoid a possible uninitialized use of gpu_scid variable to fix the below smatch warning: drivers/gpu/drm/msm/adreno/a6xx_gpu.c:1480 a6xx_llc_activate() error: uninitialized symbol 'gpu_scid'. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Akhil P Oommen <akhilpo@codeaurora.org> Link: https://lore.kernel.org/r/20211118154903.3.Ie4ac321feb10168af569d9c2b4cf6828bed8122c@changeid Signed-off-by: Rob Clark <robdclark@chromium.org> |
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Akhil P Oommen
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26d776fd0f |
drm/msm: Fix null ptr access msm_ioctl_gem_submit()
Fix the below null pointer dereference in msm_ioctl_gem_submit(): 26545.260705: Call trace: 26545.263223: kref_put+0x1c/0x60 26545.266452: msm_ioctl_gem_submit+0x254/0x744 26545.270937: drm_ioctl_kernel+0xa8/0x124 26545.274976: drm_ioctl+0x21c/0x33c 26545.278478: drm_compat_ioctl+0xdc/0xf0 26545.282428: __arm64_compat_sys_ioctl+0xc8/0x100 26545.287169: el0_svc_common+0xf8/0x250 26545.291025: do_el0_svc_compat+0x28/0x54 26545.295066: el0_svc_compat+0x10/0x1c 26545.298838: el0_sync_compat_handler+0xa8/0xcc 26545.303403: el0_sync_compat+0x188/0x1c0 26545.307445: Code: d503201f d503201f 52800028 4b0803e8 (b8680008) 26545.318799: Kernel panic - not syncing: Oops: Fatal exception Signed-off-by: Akhil P Oommen <akhilpo@codeaurora.org> Link: https://lore.kernel.org/r/20211118154903.2.I3ae019673a0cc45d83a193a7858748dd03dbb820@changeid Signed-off-by: Rob Clark <robdclark@chromium.org> |
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Rob Clark
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2d1d175a61 |
drm/msm: Demote debug message
Mesa attempts to allocate a cached-coherent buffer in order to determine if cached-coherent is supported. Resulting in seeing this error message once per process with newer mesa. But no reason for this to be more than a debug msg. Signed-off-by: Rob Clark <robdclark@chromium.org> Link: https://lore.kernel.org/r/20211111230214.765476-1-robdclark@gmail.com Signed-off-by: Rob Clark <robdclark@chromium.org> |
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Rob Clark
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4823c03049 |
drm/msm: Make a6xx_gpu_set_freq() static
Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Rob Clark <robdclark@chromium.org> Link: https://lore.kernel.org/r/20211111230151.765228-1-robdclark@gmail.com Signed-off-by: Rob Clark <robdclark@chromium.org> |
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Rob Clark
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067ecab9ee |
drm/msm: Restore error return on invalid fence
When converting to use an idr to map userspace fence seqno values back
to a dma_fence, we lost the error return when userspace passes seqno
that is larger than the last submitted fence. Restore this check.
Reported-by: Akhil P Oommen <akhilpo@codeaurora.org>
Fixes:
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Rob Clark
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ea0006d390 |
drm/msm: Fix wait_fence submitqueue leak
We weren't dropping the submitqueue reference in all paths. In
particular, when the fence has already been signalled. Split out
a helper to simplify handling this in the various different return
paths.
Fixes:
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Douglas Anderson
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3466d9e217 |
drm/msm: Fix mmap to include VM_IO and VM_DONTDUMP
In commit |
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Rob Clark
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59ba1b2b48 |
drm/msm/devfreq: Fix OPP refcnt leak
Reported-by: Douglas Anderson <dianders@chromium.org>
Fixes:
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Douglas Anderson
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b4d25abf97 |
drm/msm/a6xx: Allocate enough space for GMU registers
In commit |
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Linus Torvalds
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fa55b7dcdc | Linux 5.16-rc1 | ||
Gustavo A. R. Silva
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dee2b702bc |
kconfig: Add support for -Wimplicit-fallthrough
Add Kconfig support for -Wimplicit-fallthrough for both GCC and Clang.
The compiler option is under configuration CC_IMPLICIT_FALLTHROUGH,
which is enabled by default.
Special thanks to Nathan Chancellor who fixed the Clang bug[1][2]. This
bugfix only appears in Clang 14.0.0, so older versions still contain
the bug and -Wimplicit-fallthrough won't be enabled for them, for now.
This concludes a long journey and now we are finally getting rid
of the unintentional fallthrough bug-class in the kernel, entirely. :)
Link:
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Linus Torvalds
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ce49bfc8d0 |
Minor tweaks for 5.16:
* Clean up open-coded swap() calls.
* A little bit of #ifdef golf to complete the reunification of the
kernel and userspace libxfs source code.
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Merge tag 'xfs-5.16-merge-5' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs cleanups from Darrick Wong:
"The most 'exciting' aspect of this branch is that the xfsprogs
maintainer and I have worked through the last of the code
discrepancies between kernel and userspace libxfs such that there are
no code differences between the two except for #includes.
IOWs, diff suffices to demonstrate that the userspace tools behave the
same as the kernel, and kernel-only bits are clearly marked in the
/kernel/ source code instead of just the userspace source.
Summary:
- Clean up open-coded swap() calls.
- A little bit of #ifdef golf to complete the reunification of the
kernel and userspace libxfs source code"
* tag 'xfs-5.16-merge-5' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: sync xfs_btree_split macros with userspace libxfs
xfs: #ifdef out perag code for userspace
xfs: use swap() to make dabtree code cleaner
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Linus Torvalds
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c3b68c27f5 |
parisc architecture build-, trace-, backtrace- and page table fixes
Fix a build error in stracktrace.c, fix resolving of addresses to function names in backtraces, fix single-stepping in assembly code and flush userspace pte's when using set_pte_at(). -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQS86RI+GtKfB8BJu973ErUQojoPXwUCYZAyIAAKCRD3ErUQojoP X8zUAQCV4fijXlUEOnZorH42QsSvs1SowHXu2YdHU8CmauWVawEAt14Zj3fmMBcS +uSacieZROU9maQtGgJAYHZVJwgPyQY= =OQRw -----END PGP SIGNATURE----- Merge tag 'for-5.16/parisc-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux Pull more parisc fixes from Helge Deller: "Fix a build error in stracktrace.c, fix resolving of addresses to function names in backtraces, fix single-stepping in assembly code and flush userspace pte's when using set_pte_at()" * tag 'for-5.16/parisc-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: parisc/entry: fix trace test in syscall exit path parisc: Flush kernel data mapping in set_pte_at() when installing pte for user page parisc: Fix implicit declaration of function '__kernel_text_address' parisc: Fix backtrace to always include init funtion names |
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Linus Torvalds
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24318ae80d |
arch/sh updates for 5.16
-----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAABAgAGBQJhkUvoAAoJELcQ+SIFb8HaQG8H/1pF/zhT+xYAK7dMOYfdyl9R UGgnNGR2kjPDhsAkMHIYWVopP2KFV4kA4TCe8UcEt4GPeWZgGjV8lIaHJa/kdUsH 5tyRYtC8ZtVhJMVJQ8jZYZcTwOqYFFGtCksPq6/j0dHE0Gf+nQStSXNZqi8/XxE9 c3jDg+l7PVwdl7LWFedPVXcflhD5JLrRhyA/17V0INWrqP/MboXGRyq/Yluksw7x C89ZXrgRE+5tN9icfRT4pl/XBpezWQkjuvsyHM9DWOjqICXfng8yeB5MZ/+R2uyF qbXRSGqICOFhRRV9m/L0kypCYYiaZ8bBiYvLeGNggmpUJVMosIDFpS7kiYQavuA= =dnw0 -----END PGP SIGNATURE----- Merge tag 'sh-for-5.16' of git://git.libc.org/linux-sh Pull arch/sh updates from Rich Felker. * tag 'sh-for-5.16' of git://git.libc.org/linux-sh: sh: pgtable-3level: Fix cast to pointer from integer of different size sh: fix READ/WRITE redefinition warnings sh: define __BIG_ENDIAN for math-emu sh: math-emu: drop unused functions sh: fix kconfig unmet dependency warning for FRAME_POINTER sh: Cleanup about SPARSE_IRQ sh: kdump: add some attribute to function maple: fix wrong return value of maple_bus_init(). sh: boot: avoid unneeded rebuilds under arch/sh/boot/compressed/ sh: boot: add intermediate vmlinux.bin* to targets instead of extra-y sh: boards: Fix the cacography in irq.c sh: check return code of request_irq sh: fix trivial misannotations |
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Linus Torvalds
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6ea45c57dc |
ARM fixes for 5.16-rc1:
- Fix early_iounmap - Drop cc-option fallbacks for architecture selection -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEuNNh8scc2k/wOAE+9OeQG+StrGQFAmGRL48ACgkQ9OeQG+St rGQyXA//ZuMjsA615TncG5686glPds6y+SoiWAPosz9ElGawL5Ke9vybIBPxYrZj gSaR4aiyoCy4B22tSQcAuyd8Ai8+cX5jUv7fbgZcCWWQto0OiD3S1jpaGwaPN+3I 1fwbUvUjrdzzDfGHJbFwBYykkQ8bPWrnjtZ9EK8g9t7QuetqkZrihw/gfqHeflnu Ad9WqEiHWDguOU9kdT6uGZf5RpfjwoLuxYNMSQVktQw81+Lk0GGfEroR2ZqUZAf4 YIrhaKTxjXfkm4Hv6bfLtSYxWY0sw1ziO0qhtEJHKQyE5hbMOy5Dhdq9Ntefkin1 /+OaNZzLiKuv6ZqWJjg5ViXc0pVgDNfLKbj8aicGW3966F13OISq9MIy9pkivK+2 R7ROhcdkJ4Tz6sIbAZBxmyFbgY+sjZ0F2OoOkjcLUCfyMGqfl8FohNd6EvSs0yP8 6zfnUOg4vBkLg80d/lg6RjSszqOSdFjW4Qbi8HQoDYk9bemLPtVxQnjYsd2RMZhM oKTkNTcA17MUCYncw6xu2lL3ahz15XMxBf/L2mfFwFCIplKvpTIYbP5BWSisjiyz JhbjLj9PaCOmubu+n2JKK4dm0GeEngWhu5CW0xN0eQ0at8CJa9dmt5y3V1V8//jj F3Xltms1d67nHr+6pkE+EYp4YMTMBO1L7opsktTs1vCIJ2trTWM= =Ksk/ -----END PGP SIGNATURE----- Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm Pull ARM fixes from Russell King: - Fix early_iounmap - Drop cc-option fallbacks for architecture selection * tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: ARM: 9156/1: drop cc-option fallbacks for architecture selection ARM: 9155/1: fix early early_iounmap() |
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Linus Torvalds
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0d1503d8d8 |
Devicetree fixes for v5.16, take 1:
- 2 fixes due to DT node name changes on Arm, Ltd. boards - Treewide rename of Ingenic CGU headers - Update ST email addresses - Remove Netlogic DT bindings - Dropping few more cases of redundant 'maxItems' in schemas - Convert toshiba,tc358767 bridge binding to schema -----BEGIN PGP SIGNATURE----- iQJEBAABCgAuFiEEktVUI4SxYhzZyEuo+vtdtY28YcMFAmGRN/wQHHJvYmhAa2Vy bmVsLm9yZwAKCRD6+121jbxhw0EXD/0byDq/gx0BOgSY18wOWp0W3tnJiudRrKNk 8+TqfphpridGSzZryboBPQ3U06eOT1pMV9EBzHfqeb87nIneMxZ26KhgMPRFf7qt 87G2tyfq4Itd59HATC/8xsq/5uiCONksbPojhjn6SrI4wLBzTegIYG5ZiocQw2tP vcW9wDAOfcRVfXBtQwmYD7nkeShaoTrv+EBcAFhg4XB43TWyezCCBqvAz0qDSl7q N/9xomgsB/fG1ImL/UWjPuPix64I9mrop7d8+C17980RJM10e5wL/eDWpbvWxqy6 R7nTHT9HWnbcV5ywgBTh3W6iQw9EGyytD0Uzw3v+Meoga1/zCBkF48mEin61nY1c i44os73B9mwSZo34qysrFkir+NBNRBAwdP7z+GrarB9twlcIdfjfInQYWlNP73Yb zJ/XIVrfn6GsEZRdgXXK5VHL0ffDYzwoGEHSU6m0cTJI+iNQT4WQ89HkhMHG1q0d pRwKCE75mhMrwvniBYinL8I8LuMAJPZZKDpc6ZtBJdUdF6MFgXccJFdIBoho1TVL oHkaXWwUjkGXliTdWX7UJk4zS4zNAyB1jLT9uHMrLvX7uVM1Dsy9bYWaU4ABB0xr viT/gj/nawCbGbniytZEfAAe1bsnZOLqxmqe3XGUgYuOPQLB2xSSjkrr7HYmuLmx 1AskvHxO0w== =ukBC -----END PGP SIGNATURE----- Merge tag 'devicetree-fixes-for-5.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull devicetree fixes from Rob Herring: - Two fixes due to DT node name changes on Arm, Ltd. boards - Treewide rename of Ingenic CGU headers - Update ST email addresses - Remove Netlogic DT bindings - Dropping few more cases of redundant 'maxItems' in schemas - Convert toshiba,tc358767 bridge binding to schema * tag 'devicetree-fixes-for-5.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: dt-bindings: watchdog: sunxi: fix error in schema bindings: media: venus: Drop redundant maxItems for power-domain-names dt-bindings: Remove Netlogic bindings clk: versatile: clk-icst: Ensure clock names are unique of: Support using 'mask' in making device bus id dt-bindings: treewide: Update @st.com email address to @foss.st.com dt-bindings: media: Update maintainers for st,stm32-hwspinlock.yaml dt-bindings: media: Update maintainers for st,stm32-cec.yaml dt-bindings: mfd: timers: Update maintainers for st,stm32-timers dt-bindings: timer: Update maintainers for st,stm32-timer dt-bindings: i2c: imx: hardware do not restrict clock-frequency to only 100 and 400 kHz dt-bindings: display: bridge: Convert toshiba,tc358767.txt to yaml dt-bindings: Rename Ingenic CGU headers to ingenic,*.h |
||
|
Linus Torvalds
|
622c72b651 |
A single fix for POSIX CPU timers to address a problem where POSIX CPU
timer delivery stops working for a new child task because copy_process() copies state information which is only valid for the parent task. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAmGRDVUTHHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYocOFD/42NOdli73N+Jdq7APHUIHXzu+6DVT6 CI5toLQw+0KPoF0s1wg4+J0YCDt2k0Pu4lOabF3Ze/+c6RlR5zfCXESqsXdHaCjh E91Vs57u0ataRMEHo6KB6eBIutuF8hyxfY6vVXfkTRNAreUIWiwWYrlB0G64JVOG +/l1W7adovjLcLwcW+ArrnLJwkBKtXunK6PVv2IrdRHwpMHbwoNRCCCFvzkqnWmQ 4Yy2/NaB/PEBK5kezP1/j9EMcGCTWk1JJIm+l/PEwCCcbIgIdUahpW3XHAaqms6R oukqCvE5ukfmVzBFYBhCamhF8heyEeBVRqGU+Yyk48+I+DQFBCqaqa1NKSuEUdNL Nycy6Rp1yn7CHVSB461shMS6NJGOSNDBjv7vxer3WjV3HPJu7y0RrN7jXbkSfQnm hVKjkmbDEYwylgzFE5+T857NqD5MEXeuIBtTO08hNRnpd61aB3x+qq+8ElE6ST8Y pm6rMzw0AZ5buPK8QdGVDk0dD4WKObj1LzmRZvBtYeWynO6sxyKUl6B2CgAxrvn5 D1Li2/arkJMCVeIuIL5uE6DPoxSh8J7OuEC4KeWX8M8xQSEDImqfZ+tDL2Esv6jv xDmymq584hiCBc1CJjCOA9kZYe6KNXC7lkVOns6GaKKzLhkrcvUR3dUGhMyzxAMO t9QIAinR6JwRRA== =EBbc -----END PGP SIGNATURE----- Merge tag 'timers-urgent-2021-11-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timer fix from Thomas Gleixner: "A single fix for POSIX CPU timers to address a problem where POSIX CPU timer delivery stops working for a new child task because copy_process() copies state information which is only valid for the parent task" * tag 'timers-urgent-2021-11-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: posix-cpu-timers: Clear task::posix_cputimers_work in copy_process() |
||
|
Linus Torvalds
|
c36e33e2f4 |
A set of fixes for the interrupt subsystem:
- Core code:
A regression fix for the Open Firmware interrupt mapping code where a
interrupt controller property in a node caused a map property in the
same node to be ignored.
- Interrupt chip drivers:
- Workaround a limitation in SiFive PLIC interrupt chip which silently
ignores an EOI when the interrupt line is masked.
- Provide the missing mask/unmask implementation for the CSKY MP
interrupt controller.
- PCI/MSI:
- Prevent a use after free when PCI/MSI interrupts are released by
destroying the sysfs entries before freeing the memory which is
accessed in the sysfs show() function.
- Implement a mask quirk for the Nvidia ION AHCI chip which does not
advertise masking capability despite implementing it. Even worse the
chip comes out of reset with all MSI entries masked, which due to the
missing masking capability never get unmasked.
- Move the check which prevents accessing the MSI[X] masking for XEN
back into the low level accessors. The recent consolidation missed
that these accessors can be invoked from places which do not have
that check which broke XEN. Move them back to he original place
instead of sprinkling tons of these checks all over the code.
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Merge tag 'irq-urgent-2021-11-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Thomas Gleixner:
"A set of fixes for the interrupt subsystem
Core code:
- A regression fix for the Open Firmware interrupt mapping code where
a interrupt controller property in a node caused a map property in
the same node to be ignored.
Interrupt chip drivers:
- Workaround a limitation in SiFive PLIC interrupt chip which
silently ignores an EOI when the interrupt line is masked.
- Provide the missing mask/unmask implementation for the CSKY MP
interrupt controller.
PCI/MSI:
- Prevent a use after free when PCI/MSI interrupts are released by
destroying the sysfs entries before freeing the memory which is
accessed in the sysfs show() function.
- Implement a mask quirk for the Nvidia ION AHCI chip which does not
advertise masking capability despite implementing it. Even worse
the chip comes out of reset with all MSI entries masked, which due
to the missing masking capability never get unmasked.
- Move the check which prevents accessing the MSI[X] masking for XEN
back into the low level accessors. The recent consolidation missed
that these accessors can be invoked from places which do not have
that check which broke XEN. Move them back to he original place
instead of sprinkling tons of these checks all over the code"
* tag 'irq-urgent-2021-11-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
of/irq: Don't ignore interrupt-controller when interrupt-map failed
irqchip/sifive-plic: Fixup EOI failed when masked
irqchip/csky-mpintc: Fixup mask/unmask implementation
PCI/MSI: Destroy sysfs before freeing entries
PCI: Add MSI masking quirk for Nvidia ION AHCI
PCI/MSI: Deal with devices lying about their MSI mask capability
PCI/MSI: Move non-mask check back into low level accessors
|
||
|
Linus Torvalds
|
218cc8b860 |
A single fix for static calls to make the trampoline patching more robust
by placing explicit signature bytes after the call trampoline to prevent patching random other jumps like the CFI jump table entries. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAmGRDKsTHHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYoZeNEADEFTbUJKd8812O9vkY9we1GDAtH7bY z6sYkh0/rPvYjdPfHuwqW8tUAl+CO2ne2X8FRPKgEdRLg44BY4HaMHmujdbGh3fh zpqynUBPoOIgtWxAPGdF+JxjrKlzjFd+WwjG3qBXOF3pjKgCc5knyjTucsl6ced3 wF293rSYrIJ6uRv2TTNbM5hWJdC0arWbdMFnwQTxeZR54WLpu7Wfm+CCK41w0fAU nrfSsv73WEwpmAZNh04wsZsf7h6yCO7dCrIJD/3mpJtrUVBZXuZAKDzUzJPvHJal T8LcKwxZQAgPv0ubmOCrolj98Qp6PAPSdDJbzNsCJUYEbBqaB2inJ0PeHcZPspy9 YyW00EHXD2UKm/GNF/DIlhoiNxOSh8Wn4b6H5ZRML50bS7jsMp8YVbticWEjItL6 N4/61c45/uPILBS+Lysj0aqyj4TvagiuffJFWjw3YAQ+Gp/pzlJwRNjrw7/4DxAx KdpM881IKCR8UowBz3gIiA9FrJv2dGMqq31Rs1fjuauxkIX0gV3c64tAIRWrVscT k6GKGvHSis5cT97K3yhmNH0BUND+Skeku8G/SnTkefvcB85aU/7HBkLLJpw0w84F F6PTCaCJOEHrl3ADkilsi3z0sKWrph6aAzDEgp6Q6cmo9ulFAGw0bjuJb59xsvVK flIvTLUY3n76FA== =dgiF -----END PGP SIGNATURE----- Merge tag 'locking-urgent-2021-11-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 static call update from Thomas Gleixner: "A single fix for static calls to make the trampoline patching more robust by placing explicit signature bytes after the call trampoline to prevent patching random other jumps like the CFI jump table entries" * tag 'locking-urgent-2021-11-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: static_call,x86: Robustify trampoline patching |
||
|
Linus Torvalds
|
fc661f2dcb |
- Avoid touching ~100 config files in order to be able to select
the preemption model - clear cluster CPU masks too, on the CPU unplug path - prevent use-after-free in cfs - Prevent a race condition when updating CPU cache domains - Factor out common shared part of smp_prepare_cpus() into a common helper which can be called by both baremetal and Xen, in order to fix a booting of Xen PV guests -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmGQ8HcACgkQEsHwGGHe VUouoA//WAZ/dZu7IiM06JhZWswa2yNsdU8qQHys81lEqstaBqiWuZdg1qJTVIir 2d0aN0keiPcsLyAsp1UJ2g/K/7D5vSJWDzsHKfEAToiAm8Tntai2LlSocWWfeSQm 10grDHWpEHbj0hTHTA6HYOr2WbY4/LnR4cdL0WobIzivIrRTx49d0XUOUfWLP5KX 60uM6dSjwpJrQUnvzk+bhGiHVmutFrEJy+UU/0o+nxkdhwraNiSbLi0007BGRCof 6dokRRvLLR09dl1LMG51gVjQch4j/lCx6EWWUhYOFeV3I3gibSCNkmu7dpmMCBTR QWO01cR9gyFN4xQ2is4I36M5L0/8T+sbGvvXIXNDT/XWr0/p+g6p2mx0cd2XiYIr ZthGRcxxV/KGmxfPaygKS9tpQseMEIrdd6VjAnGfZ3OS6CtUvYt8d0B2Soj8FALQ N9fMXDIEP3uUZim8UvCT6HBKlj9LR5uI5n+dAQ6uzsenO9WqeGeldc/N26/+osdN vo4lNYTqiXJPhJvunYW5t4j5JnUa3grDHioAPWaQRJlWtEZBGKs9SXTcweg/KURb mNfe1RfSlGJt28RD3E18gXeSS7xWdKgpcVX1rmW/9tUjX04NNDWjq4sAzOj7c+Ir 4sr78XgCY0pUxFaFYxvQWFUy7wcm0zAczo1RGUhcDTf1edDEvjo= =s2MX -----END PGP SIGNATURE----- Merge tag 'sched_urgent_for_v5.16_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull scheduler fixes from Borislav Petkov: - Avoid touching ~100 config files in order to be able to select the preemption model - clear cluster CPU masks too, on the CPU unplug path - prevent use-after-free in cfs - Prevent a race condition when updating CPU cache domains - Factor out common shared part of smp_prepare_cpus() into a common helper which can be called by both baremetal and Xen, in order to fix a booting of Xen PV guests * tag 'sched_urgent_for_v5.16_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: preempt: Restore preemption model selection configs arch_topology: Fix missing clear cluster_cpumask in remove_cpu_topology() sched/fair: Prevent dead task groups from regaining cfs_rq's sched/core: Mitigate race cpus_share_cache()/update_top_cache_domain() x86/smp: Factor out parts of native_smp_prepare_cpus() |
||
|
Linus Torvalds
|
f7018be292 |
- Prevent unintentional page sharing by checking whether a page
reference to a PMU samples page has been acquired properly before that - Make sure the LBR_SELECT MSR is saved/restored too - Reset the LBR_SELECT MSR when resetting the LBR PMU to clear any residual data left -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmGQ5z8ACgkQEsHwGGHe VUqqdQ/+JIV6t0yIj7aNADaakwAe+i9zFzzUuvb5KT0zPzZirswkz6xeZ4g8S8PZ lSjqKk8M2Yt3SJiqi/s3KNIOev52wtKGmeOFz1I+DUNpgk0wGHkRtVHV/iSptB61 Kp/fJvOVppY5grs5B0fRYkM5e477RPyZo+E0COKnff1bQ+k+z2ItMLCVxFCxQS6k HmgPW7CBye811YcEg28lSwgS1OXiMZ19gACIsqnQ6kQP2Puo8+HT1/V1n+0grejb OeYxURuYSRPd6Ft76qz0YlRIe1dgKllUBr7b0AaM11ADBMtWBTxqJcQvq/mOIHmT 9to0dVB/xFySR57iaL7BRuZFOrt8MRqJniEedMO99Dm9sxEVfHs1iXC9r7wZxQAf /HcvVkcyOJD92Kv+4LS5tKjowCByOYEJW2YQIgXEbA6oIhRuM9/fdxEW6lHwgdwc BPnOR6rtYuq+I+merBIIijAuf8OsIGY7ap2B+f7DkiOtA9+SHZsrU22J8T7CED/w gmrAC3+3KGt7YDs6WZTbvkXminZQyu5WpHe+2K6dlCIPmJLqEsYUx8TeXa/okyvb 8ZXy/CfJNbHUrk6GZw7RFoeannwSPv9ZJO3Mfy5PDvwDk0Fj0J+/G92mR2Zucxpo siNyBCivPY5vBPqk+x6eUPev/C3wPS+dNrs4HOyr1N2gZwgTk40= =Ciqw -----END PGP SIGNATURE----- Merge tag 'perf_urgent_for_v5.16_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf fixes from Borislav Petkov: - Prevent unintentional page sharing by checking whether a page reference to a PMU samples page has been acquired properly before that - Make sure the LBR_SELECT MSR is saved/restored too - Reset the LBR_SELECT MSR when resetting the LBR PMU to clear any residual data left * tag 'perf_urgent_for_v5.16_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/core: Avoid put_page() when GUP fails perf/x86/vlbr: Add c->flags to vlbr event constraints perf/x86/lbr: Reset LBR_SELECT during vlbr reset |
||
|
Linus Torvalds
|
1654e95ee3 |
- Add the model number of a new, Raptor Lake CPU, to intel-family.h
- Do not log spurious corrected MCEs on SKL too, due to an erratum - Clarify the path of paravirt ops patches upstream - Add an optimization to avoid writing out AMX components to sigframes when former are in init state -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmGQ3CgACgkQEsHwGGHe VUoLAA/+NXRvcBHYkLaByT9f4OI6B79HzyguIBSfipYiw8ir0H7uEdV5FUCCUgCz egBRVFpOsXWt1teeuu6ViO+WBHncUxG/ryZ0ka35lri/3kuVYnugZExWDs4MrGR5 vehRXehOxYNRaYc3oLYjubSbxqF1nWz3WWfGfhiBKk0jT/S1T9tX6lsRXlKsJCgj M4x5aqBWP8HTbFQfqjdHwagNitmSKzgjZvMcC4UWcql33ZCycbjvRdrAzBtw7WRI UBvgxWVmeMoagu5fqEOoph1oSoFxWuFrweFUjnxJmT6uZrTsfF7BVgXkxdG6eYUy 2Xogcd4bPDBiRgbs0vPEog1tyyrKHOQ6p1pvksySKMPq6ULcSZ6hBpEZRpgr6Y9u 0jB3P6weQgCckx5Hd+iwvX1a+GvEuHSEqAE+j160wFyrsBS5Cir3P1WqthWaPd5I 3nH3h955PokUHPUioUhdf+8cfuP6h6K0nz1gdYI8GR8+fJHhEceT+pLLeyIxj/VM yr+bq+V7D6Cg62w3z3s9Dzg2XKpxStu1R9L1N/K8MtIGf6Uc7paL6xR27XxhmBp5 Y6bGZw0mxxFhp6AEsFWo3rwLL9Dl5DmFcfgUHHpPK5VP0pVWp48Uapx2Hi2/JzAo c1o4UkPQa/EZJBPTklmGkS1JNp/2TsEL4Fw7sew+j7DWtsJpCfk= =Ge2T -----END PGP SIGNATURE----- Merge tag 'x86_urgent_for_v5.16_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Borislav Petkov: - Add the model number of a new, Raptor Lake CPU, to intel-family.h - Do not log spurious corrected MCEs on SKL too, due to an erratum - Clarify the path of paravirt ops patches upstream - Add an optimization to avoid writing out AMX components to sigframes when former are in init state * tag 'x86_urgent_for_v5.16_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/cpu: Add Raptor Lake to Intel family x86/mce: Add errata workaround for Skylake SKX37 MAINTAINERS: Add some information to PARAVIRT_OPS entry x86/fpu: Optimize out sigframe xfeatures when in init state |
||
|
Linus Torvalds
|
35c8fad4a7 |
perf tools changes for v5.16: 2nd batch
Hardware tracing:
ARM:
- Print the size of the buffer size consistently in hexadecimal in ARM Coresight.
- Add Coresight snapshot mode support.
- Update --switch-events docs in 'perf record'.
- Support hardware-based PID tracing.
- Track task context switch for cpu-mode events.
Vendor events:
- Add metric events JSON file for power10 platform
perf test:
- Get 'perf test' unit tests closer to kunit.
- Topology tests improvements.
- Remove bashisms from some tests.
perf bench:
- Fix memory leak of perf_cpu_map__new() in the futex benchmarks.
libbpf:
- Add some more weak libbpf functions o allow building with the libbpf versions, old ones,
present in distros.
libbeauty:
- Translate [gs]setsockopt 'level' argument integer values to strings.
tools headers UAPI:
- Sync futex_waitv, arch prctl, sound, i195_drm and msr-index files with the kernel sources.
Documentation:
- Add documentation to 'struct symbol'.
- Synchronize the definition of enum perf_hw_id with code in tools/perf/design.txt.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-tools-for-v5.16-2021-11-13' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux
Pull more perf tools updates from Arnaldo Carvalho de Melo:
"Hardware tracing:
- ARM:
* Print the size of the buffer size consistently in hexadecimal in
ARM Coresight.
* Add Coresight snapshot mode support.
* Update --switch-events docs in 'perf record'.
* Support hardware-based PID tracing.
* Track task context switch for cpu-mode events.
- Vendor events:
* Add metric events JSON file for power10 platform
perf test:
- Get 'perf test' unit tests closer to kunit.
- Topology tests improvements.
- Remove bashisms from some tests.
perf bench:
- Fix memory leak of perf_cpu_map__new() in the futex benchmarks.
libbpf:
- Add some more weak libbpf functions o allow building with the
libbpf versions, old ones, present in distros.
libbeauty:
- Translate [gs]setsockopt 'level' argument integer values to
strings.
tools headers UAPI:
- Sync futex_waitv, arch prctl, sound, i195_drm and msr-index files
with the kernel sources.
Documentation:
- Add documentation to 'struct symbol'.
- Synchronize the definition of enum perf_hw_id with code in
tools/perf/design.txt"
* tag 'perf-tools-for-v5.16-2021-11-13' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: (67 commits)
perf tests: Remove bash constructs from stat_all_pmu.sh
perf tests: Remove bash construct from record+zstd_comp_decomp.sh
perf test: Remove bash construct from stat_bpf_counters.sh test
perf bench futex: Fix memory leak of perf_cpu_map__new()
tools arch x86: Sync the msr-index.h copy with the kernel sources
tools headers UAPI: Sync drm/i915_drm.h with the kernel sources
tools headers UAPI: Sync sound/asound.h with the kernel sources
tools headers UAPI: Sync linux/prctl.h with the kernel sources
tools headers UAPI: Sync arch prctl headers with the kernel sources
perf tools: Add more weak libbpf functions
perf bpf: Avoid memory leak from perf_env__insert_btf()
perf symbols: Factor out annotation init/exit
perf symbols: Bit pack to save a byte
perf symbols: Add documentation to 'struct symbol'
tools headers UAPI: Sync files changed by new futex_waitv syscall
perf test bpf: Use ARRAY_CHECK() instead of ad-hoc equivalent, addressing array_size.cocci warning
perf arm-spe: Support hardware-based PID tracing
perf arm-spe: Save context ID in record
perf arm-spe: Update --switch-events docs in 'perf record'
perf arm-spe: Track task context switch for cpu-mode events
...
|
||
Thomas Gleixner
|
979292af5b |
irqchip fixes for 5.16, take #1
- Address an issue with the SiFive PLIC being unable to EOI
a masked interrupt
- Move the disable/enable methods in the CSky mpintc to
mask/unmask
- Fix a regression in the OF irq code where an interrupt-controller
property in the same node as an interrupt-map property would get
ignored
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Merge tag 'irqchip-fixes-5.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/urgent
Pull irqchip fixes from Marc Zyngier:
- Address an issue with the SiFive PLIC being unable to EOI
a masked interrupt
- Move the disable/enable methods in the CSky mpintc to
mask/unmask
- Fix a regression in the OF irq code where an interrupt-controller
property in the same node as an interrupt-map property would get
ignored
Link: https://lore.kernel.org/all/20211112173459.4015233-1-maz@kernel.org
|
||
|
Linus Torvalds
|
c8c109546a |
Update to zstd-1.4.10
This PR includes 5 commits that update the zstd library version:
1. Adds a new kernel-style wrapper around zstd. This wrapper API
is functionally equivalent to the subset of the current zstd API that is
currently used. The wrapper API changes to be kernel style so that the symbols
don't collide with zstd's symbols. The update to zstd-1.4.10 maintains the same
API and preserves the semantics, so that none of the callers need to be
updated. All callers are updated in the commit, because there are zero
functional changes.
2. Adds an indirection for `lib/decompress_unzstd.c` so it
doesn't depend on the layout of `lib/zstd/` to include every source file.
This allows the next patch to be automatically generated.
3. Imports the zstd-1.4.10 source code. This commit is automatically generated
from upstream zstd (https://github.com/facebook/zstd).
4. Adds me (terrelln@fb.com) as the maintainer of `lib/zstd`.
5. Fixes a newly added build warning for clang.
The discussion around this patchset has been pretty long, so I've included a
FAQ-style summary of the history of the patchset, and why we are taking this
approach.
Why do we need to update?
-------------------------
The zstd version in the kernel is based off of zstd-1.3.1, which is was released
August 20, 2017. Since then zstd has seen many bug fixes and performance
improvements. And, importantly, upstream zstd is continuously fuzzed by OSS-Fuzz,
and bug fixes aren't backported to older versions. So the only way to sanely get
these fixes is to keep up to date with upstream zstd. There are no known security
issues that affect the kernel, but we need to be able to update in case there
are. And while there are no known security issues, there are relevant bug fixes.
For example the problem with large kernel decompression has been fixed upstream
for over 2 years https://lkml.org/lkml/2020/9/29/27.
Additionally the performance improvements for kernel use cases are significant.
Measured for x86_64 on my Intel i9-9900k @ 3.6 GHz:
- BtrFS zstd compression at levels 1 and 3 is 5% faster
- BtrFS zstd decompression+read is 15% faster
- SquashFS zstd decompression+read is 15% faster
- F2FS zstd compression+write at level 3 is 8% faster
- F2FS zstd decompression+read is 20% faster
- ZRAM decompression+read is 30% faster
- Kernel zstd decompression is 35% faster
- Initramfs zstd decompression+build is 5% faster
On top of this, there are significant performance improvements coming down the
line in the next zstd release, and the new automated update patch generation
will allow us to pull them easily.
How is the update patch generated?
----------------------------------
The first two patches are preparation for updating the zstd version. Then the
3rd patch in the series imports upstream zstd into the kernel. This patch is
automatically generated from upstream. A script makes the necessary changes and
imports it into the kernel. The changes are:
- Replace all libc dependencies with kernel replacements and rewrite includes.
- Remove unncessary portability macros like: #if defined(_MSC_VER).
- Use the kernel xxhash instead of bundling it.
This automation gets tested every commit by upstream's continuous integration.
When we cut a new zstd release, we will submit a patch to the kernel to update
the zstd version in the kernel.
The automated process makes it easy to keep the kernel version of zstd up to
date. The current zstd in the kernel shares the guts of the code, but has a lot
of API and minor changes to work in the kernel. This is because at the time
upstream zstd was not ready to be used in the kernel envrionment as-is. But,
since then upstream zstd has evolved to support being used in the kernel as-is.
Why are we updating in one big patch?
-------------------------------------
The 3rd patch in the series is very large. This is because it is restructuring
the code, so it both deletes the existing zstd, and re-adds the new structure.
Future updates will be directly proportional to the changes in upstream zstd
since the last import. They will admittidly be large, as zstd is an actively
developed project, and has hundreds of commits between every release. However,
there is no other great alternative.
One option ruled out is to replay every upstream zstd commit. This is not feasible
for several reasons:
- There are over 3500 upstream commits since the zstd version in the kernel.
- The automation to automatically generate the kernel update was only added recently,
so older commits cannot easily be imported.
- Not every upstream zstd commit builds.
- Only zstd releases are "supported", and individual commits may have bugs that were
fixed before a release.
Another option to reduce the patch size would be to first reorganize to the new
file structure, and then apply the patch. However, the current kernel zstd is formatted
with clang-format to be more "kernel-like". But, the new method imports zstd as-is,
without additional formatting, to allow for closer correlation with upstream, and
easier debugging. So the patch wouldn't be any smaller.
It also doesn't make sense to import upstream zstd commit by commit going
forward. Upstream zstd doesn't support production use cases running of the
development branch. We have a lot of post-commit fuzzing that catches many bugs,
so indiviudal commits may be buggy, but fixed before a release. So going forward,
I intend to import every (important) zstd release into the Kernel.
So, while it isn't ideal, updating in one big patch is the only patch I see forward.
Who is responsible for this code?
---------------------------------
I am. This patchset adds me as the maintainer for zstd. Previously, there was no tree
for zstd patches. Because of that, there were several patches that either got ignored,
or took a long time to merge, since it wasn't clear which tree should pick them up.
I'm officially stepping up as maintainer, and setting up my tree as the path through
which zstd patches get merged. I'll make sure that patches to the kernel zstd get
ported upstream, so they aren't erased when the next version update happens.
How is this code tested?
------------------------
I tested every caller of zstd on x86_64 (BtrFS, ZRAM, SquashFS, F2FS, Kernel,
InitRAMFS). I also tested Kernel & InitRAMFS on i386 and aarch64. I checked both
performance and correctness.
Also, thanks to many people in the community who have tested these patches locally.
If you have tested the patches, please reply with a Tested-By so I can collect them
for the PR I will send to Linus.
Lastly, this code will bake in linux-next before being merged into v5.16.
Why update to zstd-1.4.10 when zstd-1.5.0 has been released?
------------------------------------------------------------
This patchset has been outstanding since 2020, and zstd-1.4.10 was the latest
release when it was created. Since the update patch is automatically generated
from upstream, I could generate it from zstd-1.5.0. However, there were some
large stack usage regressions in zstd-1.5.0, and are only fixed in the latest
development branch. And the latest development branch contains some new code that
needs to bake in the fuzzer before I would feel comfortable releasing to the
kernel.
Once this patchset has been merged, and we've released zstd-1.5.1, we can update
the kernel to zstd-1.5.1, and exercise the update process.
You may notice that zstd-1.4.10 doesn't exist upstream. This release is an
artifical release based off of zstd-1.4.9, with some fixes for the kernel
backported from the development branch. I will tag the zstd-1.4.10 release after
this patchset is merged, so the Linux Kernel is running a known version of zstd
that can be debugged upstream.
Why was a wrapper API added?
----------------------------
The first versions of this patchset migrated the kernel to the upstream zstd
API. It first added a shim API that supported the new upstream API with the old
code, then updated callers to use the new shim API, then transitioned to the
new code and deleted the shim API. However, Cristoph Hellwig suggested that we
transition to a kernel style API, and hide zstd's upstream API behind that.
This is because zstd's upstream API is supports many other use cases, and does
not follow the kernel style guide, while the kernel API is focused on the
kernel's use cases, and follows the kernel style guide.
Where is the previous discussion?
---------------------------------
Links for the discussions of the previous versions of the patch set.
The largest changes in the design of the patchset are driven by the discussions
in V11, V5, and V1. Sorry for the mix of links, I couldn't find most of the the
threads on lkml.org.
V12: https://www.spinics.net/lists/linux-crypto/msg58189.html
V11: https://lore.kernel.org/linux-btrfs/20210430013157.747152-1-nickrterrell@gmail.com/
V10: https://lore.kernel.org/lkml/20210426234621.870684-2-nickrterrell@gmail.com/
V9: https://lore.kernel.org/linux-btrfs/20210330225112.496213-1-nickrterrell@gmail.com/
V8: https://lore.kernel.org/linux-f2fs-devel/20210326191859.1542272-1-nickrterrell@gmail.com/
V7: https://lkml.org/lkml/2020/12/3/1195
V6: https://lkml.org/lkml/2020/12/2/1245
V5: https://lore.kernel.org/linux-btrfs/20200916034307.2092020-1-nickrterrell@gmail.com/
V4: https://www.spinics.net/lists/linux-btrfs/msg105783.html
V3: https://lkml.org/lkml/2020/9/23/1074
V2: https://www.spinics.net/lists/linux-btrfs/msg105505.html
V1: https://lore.kernel.org/linux-btrfs/20200916034307.2092020-1-nickrterrell@gmail.com/
Signed-off-by: Nick Terrell <terrelln@fb.com>
Tested By: Paul Jones <paul@pauljones.id.au>
Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com> # LLVM/Clang v13.0.0 on x86-64
Tested-by: Jean-Denis Girard <jd.girard@sysnux.pf>
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Merge tag 'zstd-for-linus-v5.16' of git://github.com/terrelln/linux
Pull zstd update from Nick Terrell:
"Update to zstd-1.4.10.
Add myself as the maintainer of zstd and update the zstd version in
the kernel, which is now 4 years out of date, to a much more recent
zstd release. This includes bug fixes, much more extensive fuzzing,
and performance improvements. And generates the kernel zstd
automatically from upstream zstd, so it is easier to keep the zstd
verison up to date, and we don't fall so far out of date again.
This includes 5 commits that update the zstd library version:
- Adds a new kernel-style wrapper around zstd.
This wrapper API is functionally equivalent to the subset of the
current zstd API that is currently used. The wrapper API changes to
be kernel style so that the symbols don't collide with zstd's
symbols. The update to zstd-1.4.10 maintains the same API and
preserves the semantics, so that none of the callers need to be
updated. All callers are updated in the commit, because there are
zero functional changes.
- Adds an indirection for `lib/decompress_unzstd.c` so it doesn't
depend on the layout of `lib/zstd/` to include every source file.
This allows the next patch to be automatically generated.
- Imports the zstd-1.4.10 source code. This commit is automatically
generated from upstream zstd (https://github.com/facebook/zstd).
- Adds me (terrelln@fb.com) as the maintainer of `lib/zstd`.
- Fixes a newly added build warning for clang.
The discussion around this patchset has been pretty long, so I've
included a FAQ-style summary of the history of the patchset, and why
we are taking this approach.
Why do we need to update?
-------------------------
The zstd version in the kernel is based off of zstd-1.3.1, which is
was released August 20, 2017. Since then zstd has seen many bug fixes
and performance improvements. And, importantly, upstream zstd is
continuously fuzzed by OSS-Fuzz, and bug fixes aren't backported to
older versions. So the only way to sanely get these fixes is to keep
up to date with upstream zstd.
There are no known security issues that affect the kernel, but we need
to be able to update in case there are. And while there are no known
security issues, there are relevant bug fixes. For example the problem
with large kernel decompression has been fixed upstream for over 2
years [1]
Additionally the performance improvements for kernel use cases are
significant. Measured for x86_64 on my Intel i9-9900k @ 3.6 GHz:
- BtrFS zstd compression at levels 1 and 3 is 5% faster
- BtrFS zstd decompression+read is 15% faster
- SquashFS zstd decompression+read is 15% faster
- F2FS zstd compression+write at level 3 is 8% faster
- F2FS zstd decompression+read is 20% faster
- ZRAM decompression+read is 30% faster
- Kernel zstd decompression is 35% faster
- Initramfs zstd decompression+build is 5% faster
On top of this, there are significant performance improvements coming
down the line in the next zstd release, and the new automated update
patch generation will allow us to pull them easily.
How is the update patch generated?
----------------------------------
The first two patches are preparation for updating the zstd version.
Then the 3rd patch in the series imports upstream zstd into the
kernel. This patch is automatically generated from upstream. A script
makes the necessary changes and imports it into the kernel. The
changes are:
- Replace all libc dependencies with kernel replacements and rewrite
includes.
- Remove unncessary portability macros like: #if defined(_MSC_VER).
- Use the kernel xxhash instead of bundling it.
This automation gets tested every commit by upstream's continuous
integration. When we cut a new zstd release, we will submit a patch to
the kernel to update the zstd version in the kernel.
The automated process makes it easy to keep the kernel version of zstd
up to date. The current zstd in the kernel shares the guts of the
code, but has a lot of API and minor changes to work in the kernel.
This is because at the time upstream zstd was not ready to be used in
the kernel envrionment as-is. But, since then upstream zstd has
evolved to support being used in the kernel as-is.
Why are we updating in one big patch?
-------------------------------------
The 3rd patch in the series is very large. This is because it is
restructuring the code, so it both deletes the existing zstd, and
re-adds the new structure. Future updates will be directly
proportional to the changes in upstream zstd since the last import.
They will admittidly be large, as zstd is an actively developed
project, and has hundreds of commits between every release. However,
there is no other great alternative.
One option ruled out is to replay every upstream zstd commit. This is
not feasible for several reasons:
- There are over 3500 upstream commits since the zstd version in the
kernel.
- The automation to automatically generate the kernel update was only
added recently, so older commits cannot easily be imported.
- Not every upstream zstd commit builds.
- Only zstd releases are "supported", and individual commits may have
bugs that were fixed before a release.
Another option to reduce the patch size would be to first reorganize
to the new file structure, and then apply the patch. However, the
current kernel zstd is formatted with clang-format to be more
"kernel-like". But, the new method imports zstd as-is, without
additional formatting, to allow for closer correlation with upstream,
and easier debugging. So the patch wouldn't be any smaller.
It also doesn't make sense to import upstream zstd commit by commit
going forward. Upstream zstd doesn't support production use cases
running of the development branch. We have a lot of post-commit
fuzzing that catches many bugs, so indiviudal commits may be buggy,
but fixed before a release. So going forward, I intend to import every
(important) zstd release into the Kernel.
So, while it isn't ideal, updating in one big patch is the only patch
I see forward.
Who is responsible for this code?
---------------------------------
I am. This patchset adds me as the maintainer for zstd. Previously,
there was no tree for zstd patches. Because of that, there were
several patches that either got ignored, or took a long time to merge,
since it wasn't clear which tree should pick them up. I'm officially
stepping up as maintainer, and setting up my tree as the path through
which zstd patches get merged. I'll make sure that patches to the
kernel zstd get ported upstream, so they aren't erased when the next
version update happens.
How is this code tested?
------------------------
I tested every caller of zstd on x86_64 (BtrFS, ZRAM, SquashFS, F2FS,
Kernel, InitRAMFS). I also tested Kernel & InitRAMFS on i386 and
aarch64. I checked both performance and correctness.
Also, thanks to many people in the community who have tested these
patches locally.
Lastly, this code will bake in linux-next before being merged into
v5.16.
Why update to zstd-1.4.10 when zstd-1.5.0 has been released?
------------------------------------------------------------
This patchset has been outstanding since 2020, and zstd-1.4.10 was the
latest release when it was created. Since the update patch is
automatically generated from upstream, I could generate it from
zstd-1.5.0.
However, there were some large stack usage regressions in zstd-1.5.0,
and are only fixed in the latest development branch. And the latest
development branch contains some new code that needs to bake in the
fuzzer before I would feel comfortable releasing to the kernel.
Once this patchset has been merged, and we've released zstd-1.5.1, we
can update the kernel to zstd-1.5.1, and exercise the update process.
You may notice that zstd-1.4.10 doesn't exist upstream. This release
is an artifical release based off of zstd-1.4.9, with some fixes for
the kernel backported from the development branch. I will tag the
zstd-1.4.10 release after this patchset is merged, so the Linux Kernel
is running a known version of zstd that can be debugged upstream.
Why was a wrapper API added?
----------------------------
The first versions of this patchset migrated the kernel to the
upstream zstd API. It first added a shim API that supported the new
upstream API with the old code, then updated callers to use the new
shim API, then transitioned to the new code and deleted the shim API.
However, Cristoph Hellwig suggested that we transition to a kernel
style API, and hide zstd's upstream API behind that. This is because
zstd's upstream API is supports many other use cases, and does not
follow the kernel style guide, while the kernel API is focused on the
kernel's use cases, and follows the kernel style guide.
Where is the previous discussion?
---------------------------------
Links for the discussions of the previous versions of the patch set
below. The largest changes in the design of the patchset are driven by
the discussions in v11, v5, and v1. Sorry for the mix of links, I
couldn't find most of the the threads on lkml.org"
Link: https://lkml.org/lkml/2020/9/29/27 [1]
Link: https://www.spinics.net/lists/linux-crypto/msg58189.html [v12]
Link: https://lore.kernel.org/linux-btrfs/20210430013157.747152-1-nickrterrell@gmail.com/ [v11]
Link: https://lore.kernel.org/lkml/20210426234621.870684-2-nickrterrell@gmail.com/ [v10]
Link: https://lore.kernel.org/linux-btrfs/20210330225112.496213-1-nickrterrell@gmail.com/ [v9]
Link: https://lore.kernel.org/linux-f2fs-devel/20210326191859.1542272-1-nickrterrell@gmail.com/ [v8]
Link: https://lkml.org/lkml/2020/12/3/1195 [v7]
Link: https://lkml.org/lkml/2020/12/2/1245 [v6]
Link: https://lore.kernel.org/linux-btrfs/20200916034307.2092020-1-nickrterrell@gmail.com/ [v5]
Link: https://www.spinics.net/lists/linux-btrfs/msg105783.html [v4]
Link: https://lkml.org/lkml/2020/9/23/1074 [v3]
Link: https://www.spinics.net/lists/linux-btrfs/msg105505.html [v2]
Link: https://lore.kernel.org/linux-btrfs/20200916034307.2092020-1-nickrterrell@gmail.com/ [v1]
Signed-off-by: Nick Terrell <terrelln@fb.com>
Tested By: Paul Jones <paul@pauljones.id.au>
Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com> # LLVM/Clang v13.0.0 on x86-64
Tested-by: Jean-Denis Girard <jd.girard@sysnux.pf>
* tag 'zstd-for-linus-v5.16' of git://github.com/terrelln/linux:
lib: zstd: Add cast to silence clang's -Wbitwise-instead-of-logical
MAINTAINERS: Add maintainer entry for zstd
lib: zstd: Upgrade to latest upstream zstd version 1.4.10
lib: zstd: Add decompress_sources.h for decompress_unzstd
lib: zstd: Add kernel-specific API
|
||
|
Linus Torvalds
|
ccfff0a2bd |
virtio-mem: support VIRTIO_MEM_F_UNPLUGGED_INACCESSIBLE
Support the VIRTIO_MEM_F_UNPLUGGED_INACCESSIBLE feature in virtio-mem, now that "accidential" access to logically unplugged memory inside added Linux memory blocks is no longer possible, because we: 1. Removed /dev/kmem in commit |
||
James Clark
|
ac96f463cc |
perf tests: Remove bash constructs from stat_all_pmu.sh
The tests were passing but without testing and were printing the
following:
$ ./perf test -v 90
90: perf all PMU test :
--- start ---
test child forked, pid 51650
Testing cpu/branch-instructions/
./tests/shell/stat_all_pmu.sh: 10: [:
Performance counter stats for 'true':
137,307 cpu/branch-instructions/
0.001686672 seconds time elapsed
0.001376000 seconds user
0.000000000 seconds sys: unexpected operator
Changing the regexes to a grep works in sh and prints this:
$ ./perf test -v 90
90: perf all PMU test :
--- start ---
test child forked, pid 60186
[...]
Testing tlb_flush.stlb_any
test child finished with 0
---- end ----
perf all PMU test: Ok
Signed-off-by: James Clark <james.clark@arm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: John Fastabend <john.fastabend@gmail.com>
Cc: KP Singh <kpsingh@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Martin KaFai Lau <kafai@fb.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Song Liu <songliubraving@fb.com>
Cc: Sumanth Korikkar <sumanthk@linux.ibm.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Yonghong Song <yhs@fb.com>
Cc: bpf@vger.kernel.org
Cc: netdev@vger.kernel.org
Link: https://lore.kernel.org/r/20211028134828.65774-4-james.clark@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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James Clark
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a9cdc1c5e3 |
perf tests: Remove bash construct from record+zstd_comp_decomp.sh
Commit |
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James Clark
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c8b947642d |
perf test: Remove bash construct from stat_bpf_counters.sh test
Currently the test skips with an error because == only works in bash:
$ ./perf test 91 -v
Couldn't bump rlimit(MEMLOCK), failures may take place when creating BPF maps, etc
91: perf stat --bpf-counters test :
--- start ---
test child forked, pid 44586
./tests/shell/stat_bpf_counters.sh: 26: [: -v: unexpected operator
test child finished with -2
---- end ----
perf stat --bpf-counters test: Skip
Changing == to = does the same thing, but doesn't result in an error:
./perf test 91 -v
Couldn't bump rlimit(MEMLOCK), failures may take place when creating BPF maps, etc
91: perf stat --bpf-counters test :
--- start ---
test child forked, pid 45833
Skipping: --bpf-counters not supported
Error: unknown option `bpf-counters'
[...]
test child finished with -2
---- end ----
perf stat --bpf-counters test: Skip
Signed-off-by: James Clark <james.clark@arm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: John Fastabend <john.fastabend@gmail.com>
Cc: KP Singh <kpsingh@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Martin KaFai Lau <kafai@fb.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Song Liu <songliubraving@fb.com>
Cc: Sumanth Korikkar <sumanthk@linux.ibm.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Yonghong Song <yhs@fb.com>
Cc: bpf@vger.kernel.org
Cc: netdev@vger.kernel.org
Link: https://lore.kernel.org/r/20211028134828.65774-2-james.clark@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Sohaib Mohamed
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88e48238d5 |
perf bench futex: Fix memory leak of perf_cpu_map__new()
ASan reports memory leaks while running:
$ sudo ./perf bench futex all
The leaks are caused by perf_cpu_map__new not being freed.
This patch adds the missing perf_cpu_map__put since it calls
cpu_map_delete implicitly.
Fixes:
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Arnaldo Carvalho de Melo
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3442b5e05a |
tools arch x86: Sync the msr-index.h copy with the kernel sources
To pick up the changes in:
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Arnaldo Carvalho de Melo
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06cf00c48f |
tools headers UAPI: Sync drm/i915_drm.h with the kernel sources
To pick up the changes in: |
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Arnaldo Carvalho de Melo
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37057e743c |
tools headers UAPI: Sync sound/asound.h with the kernel sources
To pick up the changes in:
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Arnaldo Carvalho de Melo
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4902420432 |
tools headers UAPI: Sync linux/prctl.h with the kernel sources
To pick the changes in:
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Arnaldo Carvalho de Melo
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5b749efe2d |
tools headers UAPI: Sync arch prctl headers with the kernel sources
To pick the changes in this cset:
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Jiri Olsa
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2a4898fc26 |
perf tools: Add more weak libbpf functions
We hit the window where perf uses libbpf functions, that did not make it to the official libbpf release yet and it's breaking perf build with dynamicly linked libbpf. Fixing this by providing the new interface as weak functions which calls the original libbpf functions. Fortunatelly the changes were just renames. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andrii Nakryiko <andrii@kernel.org> Cc: Ian Rogers <irogers@google.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20211109140707.1689940-2-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Ian Rogers
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4924b1f7c4 |
perf bpf: Avoid memory leak from perf_env__insert_btf()
perf_env__insert_btf() doesn't insert if a duplicate BTF id is
encountered and this causes a memory leak. Modify the function to return
a success/error value and then free the memory if insertion didn't
happen.
v2. Adds a return -1 when the insertion error occurs in
perf_env__fetch_btf. This doesn't affect anything as the result is
never checked.
Fixes:
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Ian Rogers
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4f74f18789 |
perf symbols: Factor out annotation init/exit
The exit function fixes a memory leak with the src field as detected by
leak sanitizer. An example of which is:
Indirect leak of 25133184 byte(s) in 207 object(s) allocated from:
#0 0x7f199ecfe987 in __interceptor_calloc libsanitizer/asan/asan_malloc_linux.cpp:154
#1 0x55defe638224 in annotated_source__alloc_histograms util/annotate.c:803
#2 0x55defe6397e4 in symbol__hists util/annotate.c:952
#3 0x55defe639908 in symbol__inc_addr_samples util/annotate.c:968
#4 0x55defe63aa29 in hist_entry__inc_addr_samples util/annotate.c:1119
#5 0x55defe499a79 in hist_iter__report_callback tools/perf/builtin-report.c:182
#6 0x55defe7a859d in hist_entry_iter__add util/hist.c:1236
#7 0x55defe49aa63 in process_sample_event tools/perf/builtin-report.c:315
#8 0x55defe731bc8 in evlist__deliver_sample util/session.c:1473
#9 0x55defe731e38 in machines__deliver_event util/session.c:1510
#10 0x55defe732a23 in perf_session__deliver_event util/session.c:1590
#11 0x55defe72951e in ordered_events__deliver_event util/session.c:183
#12 0x55defe740082 in do_flush util/ordered-events.c:244
#13 0x55defe7407cb in __ordered_events__flush util/ordered-events.c:323
#14 0x55defe740a61 in ordered_events__flush util/ordered-events.c:341
#15 0x55defe73837f in __perf_session__process_events util/session.c:2390
#16 0x55defe7385ff in perf_session__process_events util/session.c:2420
...
Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Martin Liška <mliska@suse.cz>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: https://lore.kernel.org/r/20211112035124.94327-3-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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