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2024-02-09io_uring: add support for ftruncateTony Solomonik
Adds support for doing truncate through io_uring, eliminating the need for applications to roll their own thread pool or offload mechanism to be able to do non-blocking truncates. Signed-off-by: Tony Solomonik <tony.solomonik@gmail.com> Link: https://lore.kernel.org/r/20240202121724.17461-3-tony.solomonik@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-02-09ASoC: tas2781: remove unused acpi_subysystem_idGergo Koteles
The acpi_subysystem_id is only written and freed, not read, so unnecessary. Signed-off-by: Gergo Koteles <soyer@irl.hu> Link: https://lore.kernel.org/r/454639336be28d2b50343e9c8366a56b0975e31d.1707456753.git.soyer@irl.hu Signed-off-by: Mark Brown <broonie@kernel.org>
2024-02-09ALSA: virtio: add support for audio controlsAnton Yakovlev
Implementation of support for audio controls in accordance with the extension of the virtio sound device specification [1] planned for virtio-v1.3-cs01. The device can announce the VIRTIO_SND_F_CTLS feature. If the feature is negotiated, then an additional field appears in the configuration space: struct virtio_snd_config { ... /* number of available control elements */ __le32 controls; }; The driver can send the following requests to manage audio controls: enum { ... /* control element request types */ VIRTIO_SND_R_CTL_INFO = 0x0300, VIRTIO_SND_R_CTL_ENUM_ITEMS, VIRTIO_SND_R_CTL_READ, VIRTIO_SND_R_CTL_WRITE, VIRTIO_SND_R_CTL_TLV_READ, VIRTIO_SND_R_CTL_TLV_WRITE, VIRTIO_SND_R_CTL_TLV_COMMAND, ... }; And the device can send the following audio control event notification: enum { ... /* control element event types */ VIRTIO_SND_EVT_CTL_NOTIFY = 0x1200, ... }; See additional details in [1]. [1] https://lists.oasis-open.org/archives/virtio-comment/202104/msg00013.html Signed-off-by: Anton Yakovlev <anton.yakovlev@opensynergy.com> Signed-off-by: Aiswarya Cyriac <aiswarya.cyriac@opensynergy.com> Link: https://lore.kernel.org/r/20240115133654.576068-2-aiswarya.cyriac@opensynergy.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
2024-02-09Compiler Attributes: Add __uninitialized macroHeiko Carstens
With INIT_STACK_ALL_PATTERN or INIT_STACK_ALL_ZERO enabled the kernel will be compiled with -ftrivial-auto-var-init=<...> which causes initialization of stack variables at function entry time. In order to avoid the performance impact that comes with this users can use the "uninitialized" attribute to prevent such initialization. Therefore provide the __uninitialized macro which can be used for cases where INIT_STACK_ALL_PATTERN or INIT_STACK_ALL_ZERO is enabled, but only selected variables should not be initialized. Acked-by: Kees Cook <keescook@chromium.org> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Link: https://lore.kernel.org/r/20240205154844.3757121-2-hca@linux.ibm.com Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2024-02-09iommu: Introduce iommu_group_mutex_assert()Vasant Hegde
Add function to check iommu group mutex lock. So that device drivers can rely on group mutex lock instead of adding another driver level lock before modifying driver specific device data structure. Suggested-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Vasant Hegde <vasant.hegde@amd.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20240205115615.6053-10-vasant.hegde@amd.com Signed-off-by: Joerg Roedel <jroedel@suse.de>
2024-02-09iommu/amd: Introduce get_amd_iommu_from_dev()Suravee Suthikulpanit
Introduce get_amd_iommu_from_dev() and get_amd_iommu_from_dev_data(). And replace rlookup_amd_iommu() with the new helper function where applicable to avoid unnecessary loop to look up struct amd_iommu from struct device. Suggested-by: Jason Gunthorpe <jgg@ziepe.ca> Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> Signed-off-by: Vasant Hegde <vasant.hegde@amd.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20240205115615.6053-4-vasant.hegde@amd.com Signed-off-by: Joerg Roedel <jroedel@suse.de>
2024-02-09wwan: core: Add WWAN fastboot port typeJinjian Song
Add a new WWAN port that connects to the device fastboot protocol interface. Signed-off-by: Jinjian Song <jinjian.song@fibocom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-02-09Revert "usb: dwc3: Support EBC feature of DWC_usb31"Thinh Nguyen
This reverts commit 398aa9a7e77cf23c2a6f882ddd3dcd96f21771dc. The update to the gadget API to support EBC feature is incomplete. It's missing at least the following: * New usage documentation * Gadget capability check * Condition for the user to check how many and which endpoints can be used as "fifo_mode" * Description of how it can affect completed request (e.g. dwc3 won't update TRB on completion -- ie. how it can affect request's actual length report) Let's revert this until it's ready. Fixes: 398aa9a7e77c ("usb: dwc3: Support EBC feature of DWC_usb31") Signed-off-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com> Link: https://lore.kernel.org/r/3042f847ff904b4dd4e4cf66a1b9df470e63439e.1707441690.git.Thinh.Nguyen@synopsys.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-02-09drm: remove drm_debug_printer in favor of drm_dbg_printerJani Nikula
Convert the remaining drm_debug_printer users over to drm_dbg_printer, as it can handle the cases without struct drm_device pointer, and also provides drm debug category and prefix support. Remove drm_debug_printer altogether. Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Luca Coelho <luciano.coelho@intel.com> Acked-by: Maxime Ripard <mripard@kernel.org> Link: https://patchwork.freedesktop.org/patch/msgid/18b5b91e62d071675a651f6f91c58f05ad74134a.1705410327.git.jani.nikula@intel.com
2024-02-09drm/dp: switch drm_dp_vsc_sdp_log() to struct drm_printerJani Nikula
Use the existing drm printer infrastructure instead of local macros. Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Luca Coelho <luciano.coelho@intel.com> Acked-by: Maxime Ripard <mripard@kernel.org> Link: https://patchwork.freedesktop.org/patch/msgid/cdf8faf272d345de215feb6ececba384ecaecdb4.1705410327.git.jani.nikula@intel.com
2024-02-09drm/print: add drm_dbg_printer() for drm device specific printerJani Nikula
We've lacked a device specific debug printer. Add one. Take category into account too. __builtin_return_address(0) is inaccurate here, so don't use it. If necessary, we can later pass __func__ to drm_dbg_printer() by wrapping it inside a macro. Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Luca Coelho <luciano.coelho@intel.com> Acked-by: Maxime Ripard <mripard@kernel.org> Link: https://patchwork.freedesktop.org/patch/msgid/48607d58e5cdf8341ffdd522257542fa2ce41a19.1705410327.git.jani.nikula@intel.com
2024-02-09drm/print: move enum drm_debug_category etc. earlier in drm_print.hJani Nikula
Avoid forward declarations in subsequent changes, but separate this movement to an independent change. Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Luca Coelho <luciano.coelho@intel.com> Acked-by: Maxime Ripard <mripard@kernel.org> Link: https://patchwork.freedesktop.org/patch/msgid/9d105014e3c90af13a874745d768212347f68283.1705410327.git.jani.nikula@intel.com
2024-02-09drm/print: make drm_err_printer() device specific by using drm_err()Jani Nikula
With few users for drm_err_printer(), it's still feasible to convert it to be device specific. Use drm_err() under the hood. While at it, make the prefix optional. Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Luca Coelho <luciano.coelho@intel.com> Acked-by: Maxime Ripard <mripard@kernel.org> Link: https://patchwork.freedesktop.org/patch/msgid/2a9cdcfc1df44568078f7c131e2e7e0f7c94e97e.1705410327.git.jani.nikula@intel.com
2024-02-09PCI: endpoint: Refactor pci_epf_alloc_space() APINiklas Cassel
Refactor pci_epf_alloc_space() API to accept "epc_features" as a parameter. This is a preparatory work to make the API more robust. Reviewed-by: Frank Li <Frank.Li@nxp.com> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Signed-off-by: Niklas Cassel <cassel@kernel.org> Link: https://lore.kernel.org/r/20240207213922.1796533-2-cassel@kernel.org [mani: reworded commit message] Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
2024-02-09drm/bridge: remove ->get_edid callbackJani Nikula
There are no more users of the ->get_edid callback left. They've all been converted to ->edid_read. Remove the callback, and the fallback in drm_bridge_edid_read(). Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/34407a355ec6848fc44f8c30d245fcbc5687195e.1706038510.git.jani.nikula@intel.com
2024-02-09wifi: cfg80211: fix kernel-doc for cfg80211_chandef_primaryJohannes Berg
This was still referring to cfg80211_chandef_primary_freq(), fix it. Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Fixes: b82730bf57b5 ("wifi: cfg80211/mac80211: move puncturing into chandef") Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-02-09Merge tag 'drm-misc-fixes-2024-02-08' of ↵Dave Airlie
git://anongit.freedesktop.org/drm/drm-misc into drm-fixes A null pointer dereference fix for v3d, a TTM pool initialization fix, several fixes for nouveau around register size, DMA buffer leaks and API consistency, a multiple fixes for ivpu around MMU setup, initialization and firmware interactions. Signed-off-by: Dave Airlie <airlied@redhat.com> From: Maxime Ripard <mripard@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/4wsi2i6kgkqdu7nzp4g7hxasbswnrmc5cakgf5zzvnix53u7lr@4rmp7hwblow3
2024-02-08Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
Cross-merge networking fixes after downstream PR. No conflicts. Adjacent changes: drivers/net/ethernet/stmicro/stmmac/common.h 38cc3c6dcc09 ("net: stmmac: protect updates of 64-bit statistics counters") fd5a6a71313e ("net: stmmac: est: Per Tx-queue error count for HLBF") c5c3e1bfc9e0 ("net: stmmac: Offload queueMaxSDU from tc-taprio") drivers/net/wireless/microchip/wilc1000/netdev.c c9013880284d ("wifi: fill in MODULE_DESCRIPTION()s for wilc1000") 328efda22af8 ("wifi: wilc1000: do not realloc workqueue everytime an interface is added") net/unix/garbage.c 11498715f266 ("af_unix: Remove io_uring code for GC.") 1279f9d9dec2 ("af_unix: Call kfree_skb() for dead unix_(sk)->oob_skb in GC.") Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-02-08Merge tag 'net-6.8-rc4' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net Pull networking fixes from Paolo Abeni: "Including fixes from WiFi and netfilter. Current release - regressions: - nic: intel: fix old compiler regressions - netfilter: ipset: missing gc cancellations fixed Current release - new code bugs: - netfilter: ctnetlink: fix filtering for zone 0 Previous releases - regressions: - core: fix from address in memcpy_to_iter_csum() - netfilter: nfnetlink_queue: un-break NF_REPEAT - af_unix: fix memory leak for dead unix_(sk)->oob_skb in GC. - devlink: avoid potential loop in devlink_rel_nested_in_notify_work() - iwlwifi: - mvm: fix a battery life regression - fix double-free bug - mac80211: fix waiting for beacons logic - nic: nfp: flower: prevent re-adding mac index for bonded port Previous releases - always broken: - rxrpc: fix generation of serial numbers to skip zero - tipc: check the bearer type before calling tipc_udp_nl_bearer_add() - tunnels: fix out of bounds access when building IPv6 PMTU error - nic: hv_netvsc: register VF in netvsc_probe if NET_DEVICE_REGISTER missed - nic: atlantic: fix DMA mapping for PTP hwts ring Misc: - selftests: more fixes to deal with very slow hosts" * tag 'net-6.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (80 commits) netfilter: nft_set_pipapo: remove scratch_aligned pointer netfilter: nft_set_pipapo: add helper to release pcpu scratch area netfilter: nft_set_pipapo: store index in scratch maps netfilter: nft_set_rbtree: skip end interval element from gc netfilter: nfnetlink_queue: un-break NF_REPEAT netfilter: nf_tables: use timestamp to check for set element timeout netfilter: nft_ct: reject direction for ct id netfilter: ctnetlink: fix filtering for zone 0 s390/qeth: Fix potential loss of L3-IP@ in case of network issues netfilter: ipset: Missing gc cancellations fixed octeontx2-af: Initialize maps. net: ethernet: ti: cpsw: enable mac_managed_pm to fix mdio net: ethernet: ti: cpsw_new: enable mac_managed_pm to fix mdio netfilter: nft_set_pipapo: remove static in nft_pipapo_get() netfilter: nft_compat: restrict match/target protocol to u16 netfilter: nft_compat: reject unused compat flag netfilter: nft_compat: narrow down revision to unsigned 8-bits net: intel: fix old compiler regressions MAINTAINERS: Maintainer change for rds selftests: cmsg_ipv6: repeat the exact packet ...
2024-02-08spi: pxa2xx: Use typedef for dma_filter_fnKrzysztof Kozlowski
Use existing typedef for dma_filter_fn to avoid duplicating type definition. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20240208202154.630336-3-krzysztof.kozlowski@linaro.org Signed-off-by: Mark Brown <broonie@kernel.org>
2024-02-08spi: pl022: Add missing dma_filter field kerneldocKrzysztof Kozlowski
Add kerneldoc for dma_filter field in struct pl022_ssp_controller. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20240208202154.630336-2-krzysztof.kozlowski@linaro.org Signed-off-by: Mark Brown <broonie@kernel.org>
2024-02-08spi: pl022: Use typedef for dma_filter_fnKrzysztof Kozlowski
Use existing typedef for dma_filter_fn to avoid duplicating type definition. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20240208202154.630336-1-krzysztof.kozlowski@linaro.org Signed-off-by: Mark Brown <broonie@kernel.org>
2024-02-08io_uring: re-arrange struct io_ring_ctx to reduce paddingJens Axboe
Nothing major here, just moving a few things around to reduce the padding. This reduces the size on a non-debug kernel from 1536 to 1472 bytes, saving a full cacheline. Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-02-08io_uring: remove 'loops' argument from trace_io_uring_task_work_run()Jens Axboe
We no longer loop in task_work handling, hence delete the argument from the tracepoint as it's always 1 and hence not very informative. Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-02-08io_uring: add io_file_can_poll() helperJens Axboe
This adds a flag to avoid dipping dereferencing file and then f_op to figure out if the file has a poll handler defined or not. We generally call this at least twice for networked workloads, and if using ring provided buffers, we do it on every buffer selection. Particularly the latter is troublesome, as it's otherwise a very fast operation. Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-02-08io_uring/cancel: don't default to setting req->work.cancel_seqJens Axboe
Just leave it unset by default, avoiding dipping into the last cacheline (which is otherwise untouched) for the fast path of using poll to drive networked traffic. Add a flag that tells us if the sequence is valid or not, and then we can defer actually assigning the flag and sequence until someone runs cancelations. Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-02-08io_uring: expand main struct io_kiocb flags to 64-bitsJens Axboe
We're out of space here, and none of the flags are easily reclaimable. Bump it to 64-bits and re-arrange the struct a bit to avoid gaps. Add a specific bitwise type for the request flags, io_request_flags_t. This will help catch violations of casting this value to a smaller type on 32-bit archs, like unsigned int. This creates a hole in the io_kiocb, so move nr_tw up and rsrc_node down to retain needing only cacheline 0 and 1 for non-polled opcodes. No functional changes intended in this patch. Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-02-08fs: FS_IOC_GETUUIDKent Overstreet
Add a new generic ioctls for querying the filesystem UUID. These are lifted versions of the ext4 ioctls, with one change: we're not using a flexible array member, because UUIDs will never be more than 16 bytes. This patch adds a generic implementation of FS_IOC_GETFSUUID, which reads from super_block->s_uuid. We're not lifting SETFSUUID from ext4 - that can be done on offline filesystems by the people who need it, trying to do it online is just asking for too much trouble. Cc: Christian Brauner <brauner@kernel.org> Cc: Jan Kara <jack@suse.cz> Cc: Dave Chinner <dchinner@redhat.com> Cc: Darrick J. Wong <djwong@kernel.org> Cc: Theodore Ts'o <tytso@mit.edu> Cc: linux-fsdevel@vger.kernel.org Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev> Link: https://lore.kernel.org/r/20240207025624.1019754-4-kent.overstreet@linux.dev Signed-off-by: Christian Brauner <brauner@kernel.org>
2024-02-08fs: super_set_uuid()Kent Overstreet
Some weird old filesytems have UUID-like things that we wish to expose as UUIDs, but are smaller; add a length field so that the new FS_IOC_(GET|SET)UUID ioctls can handle them in generic code. And add a helper super_set_uuid(), for setting nonstandard length uuids. Helper is now required for the new FS_IOC_GETUUID ioctl; if super_set_uuid() hasn't been called, the ioctl won't be supported. Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev> Link: https://lore.kernel.org/r/20240207025624.1019754-2-kent.overstreet@linux.dev Signed-off-by: Christian Brauner <brauner@kernel.org>
2024-02-08spi: get rid of some legacy macrosMark Brown
Merge series from Uwe Kleine-König <u.kleine-koenig@pengutronix.de>: This series finishes off the removal of some of the legacy names for SPI controllers and devices.
2024-02-08drm/bridge: remove drm_bridge_get_edid() in favour of drm_bridge_edid_read()Jani Nikula
All users of drm_bridge_get_edid() have been converted to use drm_bridge_edid_read(). Remove drm_bridge_get_edid(). Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/c51d50edddbe8816eaa63e6ccafa9f2354b506ba.1706038510.git.jani.nikula@intel.com
2024-02-08drm/bridge: add ->edid_read hook and drm_bridge_edid_read()Jani Nikula
Add new struct drm_edid based ->edid_read hook and drm_bridge_edid_read() function to call the hook. v2: Include drm/drm_edid.h Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/9d08d22eaffcb9c59a2b677e45d7e61fc689bc2f.1706038510.git.jani.nikula@intel.com
2024-02-08wifi: mac80211: add support to call csa_finish on a linkAditya Kumar Singh
Currently ieee80211_csa_finish() function finalizes CSA by scheduling a finalizing worker using the deflink. With MLO, there is a need to do it on a given link basis. Pass link ID of the link on which CSA needs to be finalized. Signed-off-by: Aditya Kumar Singh <quic_adisi@quicinc.com> Link: https://msgid.link/20240130140918.1172387-6-quic_adisi@quicinc.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-02-08wifi: mac80211: update beacon counters per link basisAditya Kumar Singh
Currently, function to update beacon counter uses deflink to fetch the beacon and then update the counter. However, with MLO, there is a need to update the counter for the beacon in a particular link. Add support to use link_id in order to fetch the beacon from a particular link data during beacon update counter. Signed-off-by: Aditya Kumar Singh <quic_adisi@quicinc.com> Link: https://msgid.link/20240130140918.1172387-3-quic_adisi@quicinc.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-02-08wifi: cfg80211: send link id in channel_switch opsAditya Kumar Singh
Currently, during channel switch, no link id information is passed down. In order to support channel switch during Multi Link Operation, it is required to pass link id as well. Add changes to pass link id in the channel_switch cfg80211_ops. Signed-off-by: Aditya Kumar Singh <quic_adisi@quicinc.com> Link: https://msgid.link/20240130140918.1172387-2-quic_adisi@quicinc.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-02-08wifi: cfg80211: Add utility for converting op_class into chandefMichael-CY Lee
This utility is used in STA CSA handling. The op_class in the ECSA Element can be converted into chandef. Co-developed-by: Money Wang <money.wang@mediatek.com> Signed-off-by: Michael-CY Lee <michael-cy.lee@mediatek.com> Link: https://msgid.link/20231222010914.6521-2-michael-cy.lee@mediatek.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-02-08wifi: mac80211: adjust EHT capa when lowering bandwidthJohannes Berg
If intending to associate with a lower bandwidth, remove capabilities related to 320 MHz from the EHT capabilities element. Also change the EHT MCS-NSS set accordingly: if just reducing 320->160 or similar the format doesn't change, just cut off the last bytes. If changing from higher bandwidth to 20 MHz only EHT STA, adjust the format. Note that this also requires adjusting the caller in mlme.c since the data written can now be shorter than it determined. We need to clean all that up. Since the other callers pass NULL for the conn limit, we don't need to change things there. Link: https://msgid.link/20240129202041.b5f6df108c77.I0d8ea04079c61cb3744cc88625eeaf0d4776dc2b@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-02-08wifi: mac80211: implement MLO multicast deduplicationJohannes Berg
If the vif is an MLD then it may receive multicast from different links, and should drop those frames according to the SN. Implement that. Link: https://msgid.link/20240129200456.693b77d14b44.I491846f2bea0058c14eab6422962c10bfae9b675@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-02-08wifi: mac80211: add/use ieee80211_get_sn()Johannes Berg
This will also be useful for MLO duplicate multicast detection, but add it already here and use it in one place that trivially converts. Link: https://msgid.link/20240129200456.f0ff49c80006.I850d2785ab1640e56e262d3ad7343b87f6962552@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-02-08wifi: cfg80211/mac80211: move puncturing into chandefJohannes Berg
Aloka originally suggested that puncturing should be part of the chandef, so that it's treated correctly. At the time, I disagreed and it ended up not part of the chandef, but I've now realized that this was wrong. Even for clients, the RX, and perhaps more importantly, CCA configuration needs to take puncturing into account. Move puncturing into the chandef, and adjust all the code accordingly. Also add a few tests for puncturing in chandef compatibility checking. Link: https://lore.kernel.org/linux-wireless/20220214223051.3610-1-quic_alokad@quicinc.com/ Suggested-by: Aloka Dixit <quic_alokad@quicinc.com> Link: https://msgid.link/20240129194108.307183a5d2e5.I4d7fe2f126b2366c1312010e2900dfb2abffa0f6@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-02-08PM: EM: Add em_dev_compute_costs()Lukasz Luba
The device drivers can modify EM at runtime by providing a new EM table. The EM is used by the EAS and the em_perf_state::cost stores pre-calculated value to avoid overhead. This patch provides the API for device drivers to calculate the cost values properly (and not duplicate the same code). Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Tested-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Signed-off-by: Lukasz Luba <lukasz.luba@arm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-02-08PM: EM: Remove old tableLukasz Luba
Remove the old EM table which wasn't able to modify the data. Clean the unneeded function and refactor the code a bit. Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Tested-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Signed-off-by: Lukasz Luba <lukasz.luba@arm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-02-08PM: EM: Optimize em_cpu_energy() and remove divisionLukasz Luba
The Energy Model (EM) can be modified at runtime which brings new possibilities. The em_cpu_energy() is called by the Energy Aware Scheduler (EAS) in its hot path. The energy calculation uses power value for a given performance state (ps) and the CPU busy time as percentage for that given frequency. It is possible to avoid the division by 'scale_cpu' at runtime, because EM is updated whenever new max capacity CPU is set in the system. Use that feature and do the needed division during the calculation of the coefficient 'ps->cost'. That enhanced 'ps->cost' value can be then just multiplied simply by utilization: pd_nrg = ps->cost * \Sum cpu_util to get the needed energy for whole Performance Domain (PD). With this optimization and earlier removal of map_util_freq(), the em_cpu_energy() should run faster on the Big CPU by 1.43x and on the Little CPU by 1.69x (RockPi 4B board). Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Tested-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Signed-off-by: Lukasz Luba <lukasz.luba@arm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-02-08PM: EM: Add performance field to struct em_perf_state and optimizeLukasz Luba
The performance doesn't scale linearly with the frequency. Also, it may be different in different workloads. Some CPUs are designed to be particularly good at some applications e.g. images or video processing and other CPUs in different. When those different types of CPUs are combined in one SoC they should be properly modeled to get max of the HW in Energy Aware Scheduler (EAS). The Energy Model (EM) provides the power vs. performance curves to the EAS, but assumes the CPUs capacity is fixed and scales linearly with the frequency. This patch allows to adjust the curve on the 'performance' axis as well. Code speed optimization: Removing map_util_freq() allows to avoid one division and one multiplication operations from the EAS hot code path. Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Tested-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Signed-off-by: Lukasz Luba <lukasz.luba@arm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-02-08PM: EM: Add em_perf_state_from_pd() to get performance states tableLukasz Luba
Introduce a wrapper to get the performance states table of the performance domain. The function should be called within the RCU read critical section. Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Tested-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Signed-off-by: Lukasz Luba <lukasz.luba@arm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-02-08PM: EM: Introduce em_dev_update_perf_domain() for EM updatesLukasz Luba
Add API function em_dev_update_perf_domain() which allows the EM to be changed safely. Concurrent updaters are serialized with a mutex and the removal of memory that will not be used any more is carried out with the help of RCU. Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Tested-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Signed-off-by: Lukasz Luba <lukasz.luba@arm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-02-08PM: EM: Add functions for memory allocations for new EM tablesLukasz Luba
The runtime modified EM table can be provided from drivers. Create mechanism which allows safely allocate and free the table for device drivers. The same table can be used by the EAS in task scheduler code paths, so make sure the memory is not freed when the device driver module is unloaded. Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Tested-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Signed-off-by: Lukasz Luba <lukasz.luba@arm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-02-08PM: EM: Use runtime modified EM for CPUs energy estimation in EASLukasz Luba
The new Energy Model (EM) supports runtime modification of the performance state table to better model the power used by the SoC. Use this new feature to improve energy estimation and therefore task placement in Energy Aware Scheduler (EAS). Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Tested-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Signed-off-by: Lukasz Luba <lukasz.luba@arm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-02-08PM: EM: Introduce runtime modifiable tableLukasz Luba
The new runtime table can be populated with a new power data to better reflect the actual efficiency of the device e.g. CPU. The power can vary over time e.g. due to the SoC temperature change. Higher temperature can increase power values. For longer running scenarios, such as game or camera, when also other devices are used (e.g. GPU, ISP) the CPU power can change. The new EM framework is able to addresses this issue and change the EM data at runtime safely. Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Tested-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Signed-off-by: Lukasz Luba <lukasz.luba@arm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-02-08PM: EM: Refactor em_pd_get_efficient_state() to be more flexibleLukasz Luba
The Energy Model (EM) is going to support runtime modification. There are going to be 2 EM tables which store information. This patch aims to prepare the code to be generic and use one of the tables. The function will no longer get a pointer to 'struct em_perf_domain' (the EM) but instead a pointer to 'struct em_perf_state' (which is one of the EM's tables). Prepare em_pd_get_efficient_state() for the upcoming changes and make it possible to be re-used. Return an index for the best performance state for a given EM table. The function arguments that are introduced should allow to work on different performance state arrays. The caller of em_pd_get_efficient_state() should be able to use the index either on the default or the modifiable EM table. Reviewed-by: Daniel Lezcano <daniel.lezcano@linaro.org> Reviewed-by: Hongyan Xia <hongyan.xia2@arm.com> Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Tested-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Signed-off-by: Lukasz Luba <lukasz.luba@arm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
generated by cgit (git 2.34.1) at 2025-09-18 14:09:41 +0000