From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f48.google.com (mail-io1-f48.google.com [209.85.166.48]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 073A317597 for ; Thu, 11 Apr 2024 15:31:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.48 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712849497; cv=none; b=p+pgouyvqZgBSwUzOD+l5wlIoIhc4TjGYenZQcnn03XzFgyWGcBQ7qx1xekvnYWAj93qosmmBxiKb1s5dWrgeNeNZw0rkv/vT91c3mdpfKms2VnwTS//rixQfkdHGB44n5jyc/Nplt98tMHKAvAVInN7Cg/995/Y0zak1W/4t/E= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712849497; c=relaxed/simple; bh=Eh45+hgvDgPK3RSsQZiiI94gobTQabRcYeJMC4aVH3w=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=CYB3kl/s3VsVRi2pRMW5rO6Unw9fGDBCjePRH7llUdiavoFziLReNXDAnXRQHpf8m73PSiCl+PftooLJZjjSLKFHks02kSB9VW43l8cC+qitlWae91aP5qe7O/9QnMQuFeVMg9Lcm3AX49BRGcoA8uMAyJPjnOX0TbE3CC3akiw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.dk; spf=pass smtp.mailfrom=kernel.dk; dkim=pass (2048-bit key) header.d=kernel-dk.20230601.gappssmtp.com header.i=@kernel-dk.20230601.gappssmtp.com header.b=THvyO334; arc=none smtp.client-ip=209.85.166.48 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.dk Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=kernel.dk Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel-dk.20230601.gappssmtp.com header.i=@kernel-dk.20230601.gappssmtp.com header.b="THvyO334" Received: by mail-io1-f48.google.com with SMTP id ca18e2360f4ac-7d6812b37a6so8836939f.0 for ; Thu, 11 Apr 2024 08:31:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20230601.gappssmtp.com; s=20230601; t=1712849490; x=1713454290; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:to :from:from:to:cc:subject:date:message-id:reply-to; bh=n38P9aKIM5z629iUfdwJ1Zs0wCApOipzstbbex0Jmyk=; b=THvyO334dxAoNaUCVudkAxBbgmToaapX7xvNnKMqcoeH2+8WGh06B/I20+PzLSaDm0 WWsjs8SiENqkJVPiiZpyiopCrqfruvl2D27Tk3nuzT9c/kmlUIXHwUweumEAA9reWy1S 6Ekq4vXqaMhuH8UKjG32401cfUYD+AXHCwNrU745Zjf74tAA/sgB84HBGyYGal01R1lj a1L/lu2ssq05rZDDRX5px6HQgH3bOgKmHnSuEKspiqmN8XHAbSAtUbtWsJqucMyTPXBq qAEa+jd0nLnl70PnyDk1DXnE0GJceTGpshoKhwc/uQGr9dcJYQQaQIIJK3Q2kIl+vT9V 2BZA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1712849490; x=1713454290; h=content-transfer-encoding:mime-version:message-id:date:subject:to :from:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=n38P9aKIM5z629iUfdwJ1Zs0wCApOipzstbbex0Jmyk=; b=Je4wr5oZvmRjfnsVU/Py1M2r2j1eE75Q7gULR0nYczWoGHSZXTCligzbT9gIR6QZmC 06cW+Q6xbuRWNR+xgNjRGSNMyz35SIenxVwqE4R89XY3kTnQOXm1SR12D4Q3v1b7/dX1 Dqko6KGzA/WwtkCZYu6j+ILxj54e6g+VGYsdMQTfTIFNyMsBuiJnKLcvJKqw0nnSfEAt s2FNGNDGaqF3Ed4iTeUG3oMaBJtbPVLGXViIMLtuzcF+WVkhy1mTDo0NPqwtsejaZCf2 93jYgywvs2LXy65KXaUxh9Jn0uew+JTaSc+WXxuTCKFJS1uV+xUu3WL1tthAefZI/41G /DUg== X-Gm-Message-State: AOJu0Yy69uQagMCMwMm0h+QqbBimXd/189vZhyryO9fqXGd5Oodlk1uV LgAVYRFfdYJThIAlUQz+Bu/ySlP+/xQQSpuClbX/z2pIhvaaJOsRwots0nx8rTHemhLdhewgSUh U X-Google-Smtp-Source: AGHT+IFS4Grv59VBEPcToadCA5LPSARyuXWXv5zpplhbaqxS/yvnumLzb3Ile8isZ4xLbvgIqxIT+Q== X-Received: by 2002:a05:6602:21d7:b0:7d6:9ddf:5095 with SMTP id c23-20020a05660221d700b007d69ddf5095mr778ioc.1.1712849489088; Thu, 11 Apr 2024 08:31:29 -0700 (PDT) Received: from localhost.localdomain ([96.43.243.2]) by smtp.gmail.com with ESMTPSA id jc25-20020a056638891900b0047f14b7f6c0sm457056jab.5.2024.04.11.08.31.28 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 11 Apr 2024 08:31:28 -0700 (PDT) From: Jens Axboe To: linux-kernel@vger.kernel.org Subject: [PATCHSET RFC 0/437] Kill off old fops ->read() and ->write() Date: Thu, 11 Apr 2024 09:12:20 -0600 Message-ID: <20240411153126.16201-1-axboe@kernel.dk> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Hi, This patchset will obviously be split, commit messages updated, and specific driver patches targeted to where they belong. But I figured it'd be useful to blast out the full set at least once for reference, and then I'll continue down the right path for the next one. Subject line says it all, really. 10 years ago we added ->read_iter() and ->write_iter() to struct file_operations. These are great, as they pass in an iov_iter rather than a user buffer + length, and they also take a struct kiocb rather than just a file. Since then we've had two paths for any read or write - one legacy one that can't do per-IO hints like "This read should be non-blocking", they strictly only work with O_NONBLOCK on the file, and a newer one that supports everything the old path does and a bunch more. We've had a few issues with the iov_iter based path being slower, but those have basically been resolved with solutions like ITER_UBUF to optimize the single segment case that is often the fast path. There are basically three parts to this series: 1) Add generic helpers that we need to convert drivers. 2) Convert any use of fops->read() and ->write() 3) Kill off old cruft. 3a) Profit. Notes: - Part 1 adds FOPS_READ_ITER_HELPER() and FOPS_WRITE_ITER_HELPER() to ease conversion of some drivers, as those just wrap the existing read or write function with vfs_{read,write}_iter(). Where possible this has been avoided and a clean implementation been done. However, due to lack of man power, I didn't dig super deep in some spots. It's my hope that drivers with active developers/maintainers will take it a step further and help get their driver fully converted. - This is based on my 'read_iter' branch that adds one helper and converts timerfd/userfaultfd/signalfd. This branch is queued for 6.10. - I'm sure there are a few spots that I haven't converted just yet because I've missed them. If you see any, please let me know and I'll take care of it. - The kernel builds allyesconfig/allmodconfig on (at least) the following architectures: x86-64, arm64, sparc64, s390, powerpc. With the above caveat that there may still be old crufty drivers somewhere in the tree that are missing a conversion, it should be fairly complete. - Resulting kernel boots just fine, tested on x86-64 and arm64. Caveat emptor if you want to test it, however! - As you may be able to tell, diffstat looks promising. The lines removed will continue to go up with removal of FOPS_*() wrappers. There are currently about 150 read side wrappers and 200 write side wrappers. - I haven't done detailed analysis of text/bss sizes just yet, but preliminary looks show about a 100K reduction in kernel image size for my standard test box build. Please have a look! A continually rebased branch for these patches can be found here: https://git.kernel.dk/cgit/linux/log/?h=rw_iter arch/arm/common/bL_switcher_dummy_if.c | 8 +- arch/mips/kernel/rtlx.c | 6 +- arch/mips/kernel/vpe.c | 14 +- arch/mips/mm/sc-debugfs.c | 16 +- arch/parisc/kernel/perf.c | 14 +- arch/powerpc/kernel/dawr.c | 10 +- arch/powerpc/kernel/eeh.c | 58 +- arch/powerpc/kvm/book3s_64_mmu_hv.c | 25 +- arch/powerpc/kvm/book3s_64_mmu_radix.c | 19 +- arch/powerpc/kvm/book3s_hv.c | 26 +- arch/powerpc/kvm/timing.c | 14 +- arch/powerpc/platforms/52xx/mpc52xx_gpt.c | 7 +- arch/powerpc/platforms/cell/spufs/file.c | 312 +++++------ arch/powerpc/platforms/cell/spufs/inode.c | 2 +- arch/powerpc/platforms/powernv/eeh-powernv.c | 11 +- arch/powerpc/platforms/powernv/memtrace.c | 9 +- arch/powerpc/platforms/powernv/opal-lpc.c | 6 +- arch/powerpc/platforms/powernv/opal-prd.c | 22 +- arch/powerpc/platforms/powernv/opal-xscom.c | 30 +- arch/powerpc/platforms/pseries/dtl.c | 16 +- arch/powerpc/platforms/pseries/lpar.c | 11 +- arch/powerpc/platforms/pseries/papr-vpd.c | 8 +- arch/s390/crypto/prng.c | 18 +- arch/s390/hypfs/hypfs_dbfs.c | 11 +- arch/s390/kernel/debug.c | 29 +- arch/s390/kernel/sysinfo.c | 6 +- arch/s390/pci/pci_debug.c | 12 +- arch/sh/mm/tlb-debugfs.c | 2 +- arch/sparc/kernel/mdesc.c | 18 +- arch/um/drivers/harddog_kern.c | 6 +- arch/um/drivers/hostaudio_kern.c | 22 +- arch/um/drivers/mmapper_kern.c | 16 +- arch/x86/kernel/apm_32.c | 10 +- arch/x86/kernel/callthunks.c | 2 +- arch/x86/kernel/cpu/debugfs.c | 4 +- arch/x86/kernel/cpu/mce/dev-mcelog.c | 38 +- arch/x86/kernel/cpu/mce/inject.c | 27 +- arch/x86/kernel/cpu/mce/severity.c | 11 +- arch/x86/kernel/cpu/resctrl/pseudo_lock.c | 18 +- arch/x86/kernel/cpuid.c | 16 +- arch/x86/kernel/kdebugfs.c | 14 +- arch/x86/kernel/msr.c | 28 +- arch/x86/kernel/tboot.c | 17 +- arch/x86/kvm/debugfs.c | 2 +- arch/x86/mm/pat/memtype.c | 2 +- arch/x86/mm/pat/set_memory.c | 2 +- arch/x86/mm/pkeys.c | 15 +- arch/x86/mm/tlb.c | 15 +- block/blk-mq-debugfs.c | 20 +- block/blk-mq-debugfs.h | 2 +- drivers/accel/habanalabs/common/debugfs.c | 307 +++++------ drivers/accel/habanalabs/common/habanalabs.h | 3 +- drivers/accel/ivpu/ivpu_debugfs.c | 84 ++- drivers/accessibility/speakup/devsynth.c | 27 +- drivers/accessibility/speakup/speakup_soft.c | 46 +- drivers/acpi/acpi_dbg.c | 6 +- drivers/acpi/apei/erst-dbg.c | 23 +- drivers/acpi/ec_sys.c | 6 +- drivers/acpi/pfr_update.c | 3 +- drivers/auxdisplay/charlcd.c | 3 +- drivers/auxdisplay/panel.c | 3 +- drivers/base/power/wakeup.c | 2 +- drivers/base/regmap/regmap-debugfs.c | 115 ++-- drivers/block/aoe/aoechr.c | 15 +- drivers/block/drbd/drbd_debugfs.c | 10 +- drivers/block/mtip32xx/mtip32xx.c | 36 +- drivers/block/zram/zram_drv.c | 14 +- drivers/bluetooth/btmrvl_debugfs.c | 57 +- drivers/bluetooth/btusb.c | 20 +- drivers/bluetooth/hci_vhci.c | 73 ++- drivers/bus/mhi/host/debugfs.c | 38 +- drivers/bus/moxtet.c | 30 +- drivers/cache/sifive_ccache.c | 8 +- drivers/char/adi.c | 26 +- drivers/char/apm-emulation.c | 10 +- drivers/char/applicom.c | 7 +- drivers/char/ds1620.c | 7 +- drivers/char/dsp56k.c | 6 +- drivers/char/dtlk.c | 6 +- drivers/char/hpet.c | 3 +- drivers/char/hw_random/core.c | 3 +- drivers/char/hw_random/s390-trng.c | 9 +- drivers/char/ipmi/bt-bmc.c | 27 +- drivers/char/ipmi/ipmb_dev_int.c | 19 +- drivers/char/ipmi/ipmi_watchdog.c | 16 +- drivers/char/ipmi/kcs_bmc_cdev_ipmi.c | 23 +- drivers/char/ipmi/ssif_bmc.c | 25 +- drivers/char/lp.c | 21 +- drivers/char/mem.c | 106 +--- drivers/char/mwave/mwavedd.c | 19 +- drivers/char/nsc_gpio.c | 22 +- drivers/char/nvram.c | 19 +- drivers/char/nwbutton.c | 7 +- drivers/char/nwflash.c | 12 +- drivers/char/pc8736x_gpio.c | 4 +- drivers/char/powernv-op-panel.c | 25 +- drivers/char/ppdev.c | 18 +- drivers/char/ps3flash.c | 6 +- drivers/char/scx200_gpio.c | 4 +- drivers/char/sonypi.c | 3 +- drivers/char/tlclk.c | 9 +- drivers/char/tpm/eventlog/common.c | 2 +- drivers/char/tpm/tpm-dev-common.c | 26 +- drivers/char/tpm/tpm-dev.c | 4 +- drivers/char/tpm/tpm-dev.h | 6 +- drivers/char/tpm/tpm_vtpm_proxy.c | 20 +- drivers/char/tpm/tpmrm-dev.c | 4 +- drivers/char/virtio_console.c | 6 +- drivers/char/xilinx_hwicap/xilinx_hwicap.c | 31 +- drivers/char/xillybus/xillybus_core.c | 36 +- drivers/char/xillybus/xillyusb.c | 6 +- drivers/clk/clk.c | 11 +- .../clk/starfive/clk-starfive-jh7110-pll.c | 2 +- drivers/comedi/comedi_fops.c | 26 +- drivers/counter/counter-chrdev.c | 3 +- drivers/crypto/ccp/ccp-debugfs.c | 51 +- drivers/crypto/hisilicon/debugfs.c | 51 +- drivers/crypto/hisilicon/hpre/hpre_main.c | 23 +- drivers/crypto/hisilicon/qm.c | 22 +- drivers/crypto/hisilicon/sec2/sec_main.c | 23 +- drivers/crypto/hisilicon/zip/zip_main.c | 23 +- drivers/crypto/intel/iaa/iaa_crypto_stats.c | 2 +- .../intel/qat/qat_common/adf_cnv_dbgfs.c | 10 +- .../intel/qat/qat_common/adf_fw_counters.c | 2 +- .../qat/qat_common/adf_heartbeat_dbgfs.c | 60 +-- .../intel/qat/qat_common/adf_pm_dbgfs.c | 3 +- .../intel/qat/qat_common/adf_tl_debugfs.c | 18 +- drivers/dma/xilinx/xilinx_dpdma.c | 15 +- drivers/edac/altera_edac.c | 46 +- drivers/edac/debugfs.c | 9 +- drivers/edac/i5100_edac.c | 9 +- drivers/edac/npcm_edac.c | 8 +- drivers/edac/thunderx_edac.c | 71 ++- drivers/edac/versal_edac.c | 20 +- drivers/edac/xgene_edac.c | 43 +- drivers/edac/zynqmp_edac.c | 26 +- drivers/extcon/extcon-rtk-type-c.c | 4 +- drivers/firewire/core-cdev.c | 15 +- drivers/firewire/nosy.c | 18 +- drivers/firmware/arm_scmi/raw_mode.c | 94 ++-- drivers/firmware/cirrus/cs_dsp.c | 26 +- drivers/firmware/efi/capsule-loader.c | 16 +- drivers/firmware/psci/psci.c | 2 +- drivers/firmware/tegra/bpmp-debugfs.c | 26 +- drivers/firmware/turris-mox-rwtm.c | 22 +- drivers/firmware/xilinx/zynqmp-debug.c | 22 +- drivers/fsi/fsi-core.c | 28 +- drivers/fsi/fsi-occ.c | 20 +- drivers/fsi/fsi-sbefifo.c | 6 +- drivers/fsi/fsi-scom.c | 24 +- drivers/fsi/i2cr-scom.c | 23 +- drivers/gnss/core.c | 14 +- drivers/gpio/gpio-mockup.c | 26 +- drivers/gpio/gpiolib-cdev.c | 41 +- drivers/gpu/drm/amd/amdgpu/amdgpu_aca.c | 4 +- drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | 71 ++- drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 2 +- .../drm/amd/amdgpu/amdgpu_fw_attestation.c | 23 +- drivers/gpu/drm/amd/amdgpu/amdgpu_mca.c | 4 +- drivers/gpu/drm/amd/amdgpu/amdgpu_psp_ta.c | 18 +- drivers/gpu/drm/amd/amdgpu/amdgpu_rap.c | 14 +- drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c | 34 +- .../gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c | 22 +- drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c | 6 +- .../gpu/drm/amd/amdgpu/amdgpu_securedisplay.c | 14 +- drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 56 +- drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c | 3 +- drivers/gpu/drm/amd/amdkfd/kfd_debugfs.c | 13 +- drivers/gpu/drm/amd/amdkfd/kfd_smi_events.c | 19 +- .../amd/display/amdgpu_dm/amdgpu_dm_debugfs.c | 111 ++-- drivers/gpu/drm/amd/pm/amdgpu_pm.c | 11 +- drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c | 17 +- drivers/gpu/drm/arm/malidp_drv.c | 11 +- drivers/gpu/drm/armada/armada_debugfs.c | 13 +- drivers/gpu/drm/bridge/ite-it6505.c | 14 +- drivers/gpu/drm/drm_debugfs.c | 28 +- drivers/gpu/drm/drm_debugfs_crc.c | 26 +- drivers/gpu/drm/drm_file.c | 22 +- drivers/gpu/drm/drm_mipi_dbi.c | 14 +- drivers/gpu/drm/gma500/psb_drv.c | 2 +- .../drm/i915/display/intel_display_debugfs.c | 114 ++-- .../display/intel_display_debugfs_params.c | 36 +- drivers/gpu/drm/i915/display/intel_hotplug.c | 28 +- drivers/gpu/drm/i915/display/intel_wm.c | 42 +- drivers/gpu/drm/i915/display/skl_watermark.c | 14 +- drivers/gpu/drm/i915/gt/intel_gt_debugfs.c | 2 +- drivers/gpu/drm/i915/gt/intel_gt_debugfs.h | 2 +- .../drm/i915/gt/uc/intel_guc_log_debugfs.c | 13 +- drivers/gpu/drm/i915/i915_debugfs_params.c | 43 +- drivers/gpu/drm/i915/i915_driver.c | 2 +- drivers/gpu/drm/i915/i915_gpu_error.c | 28 +- drivers/gpu/drm/i915/i915_perf.c | 3 +- drivers/gpu/drm/imagination/pvr_fw_trace.c | 2 +- drivers/gpu/drm/imagination/pvr_params.c | 4 +- drivers/gpu/drm/loongson/lsdc_crtc.c | 14 +- drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c | 20 +- drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 20 +- drivers/gpu/drm/msm/dp/dp_debug.c | 15 +- drivers/gpu/drm/msm/msm_debugfs.c | 4 +- drivers/gpu/drm/msm/msm_perf.c | 12 +- drivers/gpu/drm/msm/msm_rd.c | 12 +- drivers/gpu/drm/nouveau/dispnv50/crc.c | 13 +- drivers/gpu/drm/nouveau/nouveau_debugfs.c | 12 +- drivers/gpu/drm/nouveau/nouveau_drm.c | 2 +- drivers/gpu/drm/omapdrm/dss/dss.c | 2 +- drivers/gpu/drm/radeon/radeon_drv.c | 2 +- drivers/gpu/drm/radeon/radeon_ttm.c | 40 +- drivers/gpu/drm/tegra/drm.c | 2 +- drivers/gpu/drm/vmwgfx/vmwgfx_drv.c | 2 +- drivers/gpu/drm/xe/xe_device.c | 2 +- drivers/gpu/vga/vga_switcheroo.c | 10 +- drivers/greybus/es2.c | 29 +- drivers/greybus/svc.c | 27 +- drivers/hid/hid-debug.c | 3 +- drivers/hid/hid-picolcd_debugfs.c | 65 +-- drivers/hid/hid-roccat.c | 12 +- drivers/hid/hid-sensor-custom.c | 3 +- drivers/hid/hid-wiimote-debug.c | 15 +- drivers/hid/hidraw.c | 15 +- drivers/hid/uhid.c | 15 +- drivers/hid/usbhid/hiddev.c | 17 +- drivers/hsi/clients/cmt_speech.c | 22 +- drivers/hsi/clients/hsi_char.c | 22 +- drivers/hv/hv_utils_transport.c | 20 +- drivers/hwmon/asus_atk0110.c | 9 +- drivers/hwmon/fschmd.c | 10 +- drivers/hwmon/mr75203.c | 20 +- drivers/hwmon/pmbus/acbel-fsg032.c | 10 +- drivers/hwmon/pmbus/ibm-cffps.c | 35 +- drivers/hwmon/pmbus/max20730.c | 10 +- drivers/hwmon/pmbus/pmbus_core.c | 10 +- drivers/hwmon/pmbus/q54sj108a2.c | 25 +- drivers/hwmon/pmbus/ucd9000.c | 11 +- drivers/hwmon/pt5161l.c | 31 +- drivers/hwmon/w83793.c | 10 +- .../hwtracing/coresight/coresight-cpu-debug.c | 15 +- drivers/hwtracing/coresight/coresight-etb10.c | 18 +- .../hwtracing/coresight/coresight-tmc-core.c | 14 +- drivers/hwtracing/coresight/ultrasoc-smb.c | 12 +- drivers/hwtracing/intel_th/msu.c | 46 +- drivers/hwtracing/stm/core.c | 10 +- drivers/i2c/i2c-dev.c | 25 +- 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drivers/watchdog/sbc_fitpc2_wdt.c | 9 +- drivers/watchdog/sc1200wdt.c | 9 +- drivers/watchdog/sc520_wdt.c | 8 +- drivers/watchdog/sch311x_wdt.c | 8 +- drivers/watchdog/scx200_wdt.c | 9 +- drivers/watchdog/smsc37b787_wdt.c | 8 +- drivers/watchdog/w83877f_wdt.c | 8 +- drivers/watchdog/w83977f_wdt.c | 8 +- drivers/watchdog/wafer5823wdt.c | 8 +- drivers/watchdog/watchdog_dev.c | 10 +- drivers/watchdog/wdrtas.c | 21 +- drivers/watchdog/wdt.c | 28 +- drivers/watchdog/wdt285.c | 7 +- drivers/watchdog/wdt977.c | 9 +- drivers/watchdog/wdt_pci.c | 21 +- drivers/xen/evtchn.c | 25 +- drivers/xen/mcelog.c | 17 +- drivers/xen/xenbus/xenbus_dev_frontend.c | 24 +- drivers/xen/xenfs/super.c | 7 +- drivers/xen/xenfs/xenstored.c | 11 +- drivers/xen/xenfs/xensyms.c | 2 +- fs/9p/vfs_dir.c | 4 +- fs/adfs/dir.c | 2 +- fs/affs/dir.c | 2 +- fs/autofs/root.c | 4 +- fs/bcachefs/chardev.c | 10 +- fs/bcachefs/debug.c | 24 +- fs/bcachefs/fs.c | 2 +- fs/bcachefs/thread_with_file.c | 14 +- fs/befs/linuxvfs.c | 2 +- fs/bfs/dir.c | 2 +- fs/binfmt_misc.c | 27 +- fs/btrfs/inode.c | 2 +- fs/cachefiles/daemon.c | 35 +- fs/cachefiles/internal.h | 4 +- fs/cachefiles/ondemand.c | 5 +- fs/ceph/dir.c | 15 +- fs/coda/dir.c | 2 +- fs/coda/psdev.c | 17 +- fs/configfs/dir.c | 2 +- fs/cramfs/inode.c | 2 +- fs/debugfs/file.c | 160 +++--- fs/dlm/debug_fs.c | 51 +- fs/dlm/plock.c | 16 +- fs/dlm/user.c | 17 +- fs/ecryptfs/file.c | 2 +- fs/ecryptfs/miscdev.c | 24 +- fs/efivarfs/file.c | 31 +- fs/efs/dir.c | 2 +- fs/erofs/dir.c | 2 +- fs/eventfd.c | 12 +- fs/exfat/dir.c | 2 +- fs/ext2/dir.c | 2 +- fs/ext4/dir.c | 2 +- fs/f2fs/dir.c | 2 +- fs/fat/dir.c | 2 +- fs/file_table.c | 4 +- fs/freevxfs/vxfs_lookup.c | 2 +- fs/fsopen.c | 11 +- fs/fuse/control.c | 86 ++- fs/fuse/dir.c | 2 +- fs/gfs2/glock.c | 6 +- fs/hfs/dir.c | 2 +- fs/hfsplus/dir.c | 2 +- fs/hostfs/hostfs_kern.c | 2 +- fs/hpfs/dir.c | 2 +- fs/isofs/dir.c | 2 +- fs/jffs2/dir.c | 2 +- fs/jfs/namei.c | 2 +- fs/kernfs/dir.c | 2 +- fs/libfs.c | 127 ++++- fs/minix/dir.c | 2 +- fs/nfs/dir.c | 2 +- fs/nfsd/nfs4state.c | 5 +- fs/nfsd/nfsctl.c | 10 +- fs/nilfs2/dir.c | 2 +- fs/notify/fanotify/fanotify_user.c | 6 +- fs/notify/inotify/inotify_user.c | 3 +- fs/ntfs3/dir.c | 2 +- fs/ocfs2/cluster/heartbeat.c | 15 +- fs/ocfs2/cluster/netdebug.c | 17 +- fs/ocfs2/dlm/dlmdebug.c | 18 +- fs/ocfs2/dlmfs/dlmfs.c | 38 +- fs/ocfs2/dlmglue.c | 2 +- fs/ocfs2/file.c | 4 +- fs/ocfs2/stack_user.c | 6 +- fs/ocfs2/super.c | 15 +- fs/omfs/dir.c | 2 +- fs/open.c | 4 +- fs/openpromfs/inode.c | 4 +- fs/orangefs/devorangefs-req.c | 23 +- fs/orangefs/dir.c | 2 +- fs/orangefs/orangefs-debugfs.c | 42 +- fs/overlayfs/readdir.c | 2 +- fs/proc/array.c | 2 +- fs/proc/base.c | 328 ++++++------ fs/proc/fd.c | 6 +- fs/proc/generic.c | 2 +- fs/proc/inode.c | 18 +- fs/proc/namespaces.c | 2 +- fs/proc/proc_net.c | 2 +- fs/proc/proc_sysctl.c | 2 +- fs/proc/root.c | 2 +- fs/proc/task_mmu.c | 37 +- fs/proc/task_nommu.c | 2 +- fs/pstore/ftrace.c | 16 +- fs/pstore/inode.c | 13 +- fs/pstore/pmsg.c | 3 +- fs/qnx4/dir.c | 2 +- fs/qnx6/dir.c | 2 +- fs/read_write.c | 74 ++- fs/reiserfs/dir.c | 2 +- fs/romfs/super.c | 2 +- fs/smb/client/cifsfs.c | 2 +- fs/squashfs/dir.c | 2 +- fs/sysv/dir.c | 2 +- fs/tracefs/event_inode.c | 2 +- fs/tracefs/inode.c | 12 +- fs/ubifs/debug.c | 57 +- fs/ubifs/dir.c | 2 +- fs/udf/dir.c | 2 +- fs/ufs/dir.c | 2 +- fs/vboxsf/dir.c | 2 +- fs/xfs/scrub/stats.c | 27 +- fs/xfs/xfs_file.c | 2 +- fs/zonefs/super.c | 2 +- include/drm/drm_accel.h | 2 +- include/drm/drm_file.h | 3 +- include/drm/drm_gem.h | 2 +- include/drm/drm_gem_dma_helper.h | 2 +- include/linux/debugfs.h | 55 +- include/linux/fs.h | 48 +- include/linux/ftrace.h | 11 +- include/linux/kstrtox.h | 33 +- include/linux/nsc_gpio.h | 8 +- include/linux/seq_file.h | 8 +- include/linux/string.h | 4 + include/linux/string_helpers.h | 3 +- include/linux/uio.h | 3 + include/linux/user_namespace.h | 10 +- include/misc/cxl.h | 3 +- include/net/cfg80211.h | 24 +- io_uring/rw.c | 70 --- ipc/mqueue.c | 10 +- kernel/bpf/bpf_iter.c | 14 +- kernel/bpf/inode.c | 2 +- kernel/bpf/syscall.c | 18 +- kernel/dma/debug.c | 15 +- kernel/events/core.c | 3 +- kernel/fail_function.c | 10 +- kernel/gcov/fs.c | 23 +- kernel/irq/debugfs.c | 12 +- kernel/kcsan/debugfs.c | 10 +- kernel/kprobes.c | 15 +- kernel/locking/lock_events.c | 18 +- kernel/locking/lock_events.h | 4 +- kernel/locking/qspinlock_stat.h | 7 +- kernel/module/stats.c | 8 +- kernel/module/tracking.c | 2 +- kernel/power/qos.c | 21 +- kernel/power/user.c | 28 +- kernel/printk/printk.c | 12 +- kernel/relay.c | 20 +- kernel/sched/debug.c | 53 +- kernel/time/posix-clock.c | 3 +- kernel/time/test_udelay.c | 10 +- kernel/trace/blktrace.c | 19 +- kernel/trace/ftrace.c | 68 ++- kernel/trace/rv/rv.c | 58 +- kernel/trace/rv/rv_reactors.c | 32 +- kernel/trace/trace.c | 386 ++++++-------- kernel/trace/trace_dynevent.c | 5 +- kernel/trace/trace_events.c | 116 ++-- kernel/trace/trace_events_hist.c | 4 +- kernel/trace/trace_events_inject.c | 19 +- kernel/trace/trace_events_synth.c | 5 +- kernel/trace/trace_events_trigger.c | 22 +- kernel/trace/trace_events_user.c | 17 +- kernel/trace/trace_functions_graph.c | 20 +- kernel/trace/trace_hwlat.c | 20 +- kernel/trace/trace_kprobe.c | 7 +- kernel/trace/trace_osnoise.c | 42 +- kernel/trace/trace_printk.c | 2 +- kernel/trace/trace_recursion_record.c | 10 +- kernel/trace/trace_sched_switch.c | 21 +- kernel/trace/trace_stack.c | 27 +- kernel/trace/trace_stat.c | 2 +- kernel/trace/trace_uprobe.c | 7 +- kernel/user_namespace.c | 39 +- lib/dynamic_debug.c | 5 +- lib/kstrtox.c | 46 +- lib/kunit/debugfs.c | 13 +- lib/string_helpers.c | 14 +- lib/test_firmware.c | 10 +- lib/xz/xz_dec_test.c | 9 +- mm/damon/dbgfs.c | 84 +-- mm/huge_memory.c | 10 +- mm/kmemleak.c | 5 +- mm/page_owner.c | 5 +- mm/shrinker_debug.c | 12 +- mm/slub.c | 2 +- mm/util.c | 57 ++ mm/vmscan.c | 14 +- net/6lowpan/debugfs.c | 14 +- net/bluetooth/6lowpan.c | 12 +- net/bluetooth/hci_debugfs.c | 150 +++--- net/bluetooth/selftest.c | 9 +- net/bluetooth/smp.c | 9 +- net/core/datagram.c | 10 +- net/l2tp/l2tp_debugfs.c | 2 +- net/mac80211/debugfs.c | 185 +++---- net/mac80211/debugfs.h | 4 +- net/mac80211/debugfs_key.c | 81 ++- net/mac80211/debugfs_netdev.c | 126 ++--- net/mac80211/debugfs_sta.c | 146 +++-- net/mac80211/rate.c | 10 +- net/mac80211/rc80211_minstrel_ht_debugfs.c | 11 +- net/rfkill/core.c | 22 +- net/sunrpc/cache.c | 14 +- net/sunrpc/debugfs.c | 4 +- net/sunrpc/rpc_pipe.c | 8 +- net/wireless/debugfs.c | 57 +- samples/vfio-mdev/mtty.c | 30 +- security/apparmor/apparmorfs.c | 55 +- security/inode.c | 9 +- security/integrity/evm/evm_secfs.c | 60 +-- security/integrity/ima/ima_fs.c | 41 +- security/landlock/syscalls.c | 15 +- security/lockdown/lockdown.c | 10 +- security/safesetid/securityfs.c | 14 +- security/selinux/selinuxfs.c | 168 +++--- security/smack/smackfs.c | 281 +++++----- security/tomoyo/securityfs_if.c | 21 +- sound/core/compress_offload.c | 7 +- sound/core/control.c | 14 +- sound/core/hwdep.c | 6 +- sound/core/init.c | 10 +- sound/core/jack.c | 83 ++- sound/core/oss/pcm_oss.c | 6 +- sound/core/pcm_native.c | 22 +- sound/core/rawmidi.c | 6 +- sound/core/seq/oss/seq_oss.c | 11 +- sound/core/seq/seq_clientmgr.c | 8 +- sound/core/timer.c | 23 +- sound/drivers/pcmtest.c | 36 +- sound/oss/dmasound/dmasound_core.c | 8 +- sound/soc/fsl/imx-audmux.c | 11 +- sound/soc/intel/avs/debugfs.c | 69 +-- sound/soc/intel/avs/pcm.c | 9 +- sound/soc/intel/skylake/skl-debug.c | 19 +- sound/soc/soc-dapm.c | 21 +- sound/soc/soc-pcm.c | 10 +- sound/soc/sof/debug.c | 34 +- sound/soc/sof/ipc3-dtrace.c | 17 +- sound/soc/sof/ipc4-mtrace.c | 17 +- sound/soc/sof/ipc4-telemetry.c | 14 +- sound/soc/sof/sof-client-ipc-flood-test.c | 19 +- .../soc/sof/sof-client-ipc-kernel-injector.c | 15 +- sound/soc/sof/sof-client-ipc-msg-injector.c | 67 ++- sound/soc/sof/sof-client-probes.c | 31 +- virt/kvm/kvm_main.c | 10 +- 859 files changed, 11379 insertions(+), 12492 deletions(-) -- Jens Axboe