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Message-ID: <20240826162416.74501-1-miquel.raynal@bootlin.com> Date: Mon, 26 Aug 2024 18:24:14 +0200 From: Miquel Raynal <miquel.raynal@...tlin.com> To: Petr Mladek <pmladek@...e.com>, Steven Rostedt <rostedt@...dmis.org>, Andy Shevchenko <andriy.shevchenko@...ux.intel.com>, Rasmus Villemoes <linux@...musvillemoes.dk>, Sergey Senozhatsky <senozhatsky@...omium.org>, Jonathan Corbet <corbet@....net>, John Ogness <john.ogness@...utronix.de>, Andrew Morton <akpm@...ux-foundation.org> Cc: Thomas Petazzoni <thomas.petazzoni@...tlin.com>, linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org, Miquel Raynal <miquel.raynal@...tlin.com> Subject: [PATCH 0/2] hexdump: Allow skipping identical lines Hello! While working on NAND issues, I used print_hex_dump() a lot to compare data. But I am mostly working on embedded systems where the kernel messages go through a serial console. Sometimes network support is an option, sometimes not. Anyway, I often print buffers both in kernel space and user space to compare them, and they may be full of 0's or 1's, which means lines are repeated a lot in the output and this is slow *and* hard to compare. I initially hacked into lib/hexdump.c for my own purpose and just discarded all the other users, but it felt like this might be a useful feature for others and decided to make it a public patch. * First patch changes the "ascii" parameter into a "flags" variable now accepting the value: DUMP_FLAG_ASCII. * Second patch adds a new flag to skip the identical lines, because this must be an opt-in parameter, I guess. The patch series has successfully gone through a round of kernel-test-robot. The Cc-list, as provided by get_maintainers.pl, was returning 330 e-mail addresses which felt to much, so I ran the script only on the second patch (the printk/includes/debug/Doc changes). It gave this Cc-list which sounds more reasonable. Hopefully this is a smart move, otherwise let me know what you think would be better. Cheers, Miquèl Miquel Raynal (2): hexdump: Convert the ascii boolean into a flag variable hexdump: Allow skipping identical lines Documentation/core-api/printk-formats.rst | 4 +- arch/um/include/shared/user.h | 6 +- arch/x86/kernel/mpparse.c | 2 +- arch/x86/kvm/svm/sev.c | 3 +- arch/xtensa/kernel/traps.c | 4 +- crypto/ansi_cprng.c | 2 +- crypto/testmgr.c | 2 +- drivers/acpi/nfit/core.c | 6 +- drivers/ata/libata-core.c | 3 +- drivers/ata/pata_parport/bpck.c | 2 +- drivers/block/floppy.c | 4 +- drivers/cdx/controller/mcdi.c | 10 +- .../crypto/allwinner/sun8i-ce/sun8i-ce-core.c | 6 +- drivers/crypto/axis/artpec6_crypto.c | 5 +- drivers/crypto/bcm/util.c | 2 +- drivers/crypto/bcm/util.h | 4 +- drivers/crypto/caam/blob_gen.c | 6 +- drivers/crypto/caam/caamalg.c | 33 +++--- drivers/crypto/caam/caamalg_desc.c | 32 +++--- drivers/crypto/caam/caamalg_qi.c | 21 ++-- drivers/crypto/caam/caamalg_qi2.c | 63 ++++++----- drivers/crypto/caam/caamhash.c | 67 +++++------ drivers/crypto/caam/caampkc.c | 2 +- drivers/crypto/caam/caamprng.c | 4 +- drivers/crypto/caam/caamrng.c | 4 +- drivers/crypto/caam/error.c | 3 +- drivers/crypto/caam/key_gen.c | 7 +- drivers/crypto/caam/sg_sw_sec4.h | 3 +- drivers/crypto/ccp/platform-access.c | 4 +- drivers/crypto/ccp/psp-dev.c | 4 +- drivers/crypto/ccp/sev-dev.c | 4 +- drivers/crypto/ccree/cc_driver.c | 2 +- .../intel/qat/qat_common/adf_mstate_mgr.c | 4 +- .../marvell/octeontx/otx_cptvf_reqmgr.c | 8 +- .../marvell/octeontx2/otx2_cptvf_reqmgr.c | 8 +- drivers/crypto/sa2ul.c | 2 +- drivers/firmware/efi/apple-properties.c | 11 +- drivers/firmware/efi/cper-arm.c | 2 +- drivers/firmware/efi/cper.c | 5 +- drivers/gpu/drm/amd/amdgpu/smu_v11_0_i2c.c | 4 +- .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 2 +- drivers/gpu/drm/bridge/lontium-lt9611uxc.c | 3 +- drivers/gpu/drm/display/drm_dp_mst_topology.c | 4 +- drivers/gpu/drm/drm_edid.c | 2 +- .../drm/i915/display/intel_crtc_state_dump.c | 2 +- drivers/gpu/drm/i915/display/intel_display.c | 4 +- .../gpu/drm/nouveau/nvkm/subdev/gsp/r535.c | 6 +- drivers/gpu/drm/omapdrm/dss/hdmi4_core.c | 2 +- drivers/gpu/drm/omapdrm/dss/hdmi5_core.c | 2 +- drivers/hv/channel_mgmt.c | 4 +- drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 2 +- drivers/infiniband/hw/irdma/cm.c | 6 +- drivers/infiniband/hw/irdma/ctrl.c | 104 +++++++++--------- drivers/infiniband/hw/irdma/puda.c | 20 ++-- drivers/infiniband/hw/irdma/uda.c | 6 +- drivers/infiniband/hw/mlx5/cq.c | 2 +- drivers/infiniband/ulp/srp/ib_srp.c | 2 +- drivers/input/touchscreen/melfas_mip4.c | 6 +- .../iommu/arm/arm-smmu-v3/arm-smmu-v3-test.c | 12 +- drivers/macintosh/via-cuda.c | 2 +- drivers/macintosh/windfarm_smu_sat.c | 4 +- drivers/mailbox/imx-mailbox.c | 4 +- drivers/media/common/tveeprom.c | 2 +- drivers/media/dvb-core/dvb_net.c | 3 +- drivers/media/firewire/firedtv-avc.c | 4 +- drivers/media/pci/saa7164/saa7164-api.c | 8 +- drivers/media/pci/saa7164/saa7164-core.c | 4 +- .../media/platform/nxp/imx-jpeg/mxc-jpeg.c | 2 +- drivers/media/platform/qcom/venus/hfi_venus.c | 2 +- drivers/media/platform/ti/cal/cal.c | 4 +- drivers/media/usb/em28xx/em28xx-i2c.c | 2 +- drivers/mfd/rave-sp.c | 4 +- drivers/misc/genwqe/genwqe_driver.h | 2 +- drivers/mtd/tests/mtd_nandecctest.c | 8 +- drivers/mtd/ubi/debug.c | 7 +- drivers/mtd/ubi/debug.h | 2 +- drivers/mtd/ubi/io.c | 7 +- drivers/net/arcnet/arcnet.c | 4 +- drivers/net/can/usb/etas_es58x/es58x_core.c | 4 +- drivers/net/can/usb/peak_usb/pcan_usb_core.c | 2 +- drivers/net/can/usb/ucan.c | 2 +- drivers/net/ethernet/aeroflex/greth.c | 7 +- drivers/net/ethernet/altera/altera_tse_main.c | 3 +- drivers/net/ethernet/amd/a2065.c | 2 +- drivers/net/ethernet/amd/ariadne.c | 2 +- drivers/net/ethernet/amd/pds_core/adminq.c | 4 +- drivers/net/ethernet/cadence/macb_main.c | 6 +- .../net/ethernet/cavium/thunder/nicvf_main.c | 2 +- .../ethernet/hisilicon/hns3/hns3_ethtool.c | 2 +- drivers/net/ethernet/intel/e1000e/netdev.c | 6 +- drivers/net/ethernet/intel/i40e/i40e_common.c | 2 +- .../net/ethernet/intel/i40e/i40e_debugfs.c | 12 +- drivers/net/ethernet/intel/iavf/iavf_common.c | 2 +- drivers/net/ethernet/intel/ice/ice_osdep.h | 4 +- drivers/net/ethernet/intel/igb/igb_main.c | 5 +- drivers/net/ethernet/intel/igc/igc_dump.c | 4 +- drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 5 +- drivers/net/ethernet/mellanox/mlx4/en_tx.c | 5 +- .../net/ethernet/mellanox/mlx5/core/en_tc.c | 3 +- .../net/ethernet/mellanox/mlx5/core/lib/aso.c | 2 +- drivers/net/ethernet/mellanox/mlx5/core/wq.c | 3 +- .../net/ethernet/mellanox/mlxfw/mlxfw_mfa2.c | 3 +- drivers/net/ethernet/meta/fbnic/fbnic_fw.c | 2 +- drivers/net/ethernet/microchip/enc28j60.c | 2 +- .../net/ethernet/pensando/ionic/ionic_main.c | 7 +- .../ethernet/pensando/ionic/ionic_rx_filter.c | 3 +- drivers/net/ethernet/qlogic/qed/qed_ll2.c | 2 +- .../net/ethernet/qlogic/qlcnic/qlcnic_io.c | 2 +- .../net/ethernet/qlogic/qlcnic/qlcnic_main.c | 2 +- drivers/net/ethernet/realtek/8139too.c | 2 +- drivers/net/ethernet/smsc/smc9194.c | 2 +- drivers/net/ethernet/vertexcom/mse102x.c | 2 +- drivers/net/fddi/skfp/skfddi.c | 3 +- drivers/net/phy/sfp.c | 6 +- drivers/net/tun.c | 3 +- drivers/net/wireless/ath/wcn36xx/wcn36xx.h | 2 +- drivers/net/wireless/ath/wil6210/cfg80211.c | 3 +- drivers/net/wireless/ath/wil6210/ethtool.c | 2 +- drivers/net/wireless/ath/wil6210/fw_inc.c | 3 +- drivers/net/wireless/ath/wil6210/txrx_edma.c | 4 +- drivers/net/wireless/ath/wil6210/wil6210.h | 9 +- drivers/net/wireless/ath/wil6210/wmi.c | 2 +- drivers/net/wireless/broadcom/b43/main.c | 2 +- drivers/net/wireless/intel/iwlegacy/common.h | 6 +- .../net/wireless/intel/iwlwifi/iwl-debug.h | 6 +- drivers/net/wireless/marvell/mwifiex/main.h | 2 +- drivers/net/wireless/realtek/rtl8xxxu/core.c | 4 +- drivers/net/wireless/realtek/rtw88/rtw8723x.c | 2 +- drivers/net/wireless/silabs/wfx/bh.c | 2 +- drivers/net/wireless/silabs/wfx/hif_rx.c | 4 +- drivers/net/wireless/ti/wl1251/wl1251.h | 2 +- drivers/net/wireless/ti/wlcore/debug.h | 2 +- drivers/net/wireless/ti/wlcore/sdio.c | 4 +- drivers/nfc/mei_phy.c | 4 +- drivers/nfc/pn533/i2c.c | 2 +- drivers/nfc/pn533/pn533.c | 2 +- drivers/nfc/pn533/uart.c | 2 +- drivers/nfc/pn533/usb.c | 6 +- drivers/nfc/pn544/i2c.c | 2 +- drivers/nfc/pn544/pn544.c | 4 +- drivers/nfc/port100.c | 4 +- drivers/nfc/st21nfca/core.c | 2 +- drivers/nfc/st21nfca/i2c.c | 2 +- drivers/nfc/trf7970a.c | 4 +- drivers/pci/probe.c | 2 +- .../surface/aggregator/ssh_packet_layer.c | 4 +- drivers/platform/x86/amd/pmf/tee-if.c | 2 +- drivers/ras/amd/fmpm.c | 3 +- drivers/rpmsg/rpmsg_ns.c | 2 +- drivers/rpmsg/virtio_rpmsg_bus.c | 4 +- drivers/s390/crypto/ap_queue.c | 4 +- drivers/s390/crypto/zcrypt_api.c | 8 +- drivers/s390/net/qeth_core_main.c | 8 +- drivers/scsi/esas2r/esas2r_log.c | 2 +- drivers/scsi/qedf/qedf_fip.c | 4 +- drivers/scsi/qedf/qedf_io.c | 2 +- drivers/scsi/qedf/qedf_main.c | 4 +- drivers/scsi/qla2xxx/qla_dbg.c | 2 +- drivers/soc/ti/k3-ringacc.c | 2 +- drivers/spi/spi-pl022.c | 4 +- drivers/staging/nvec/nvec.c | 4 +- drivers/staging/nvec/nvec_ps2.c | 2 +- .../vc04_services/vchiq-mmal/mmal-vchiq.c | 4 +- drivers/tty/n_gsm.c | 4 +- drivers/ufs/core/ufshcd.c | 2 +- drivers/usb/class/usbtmc.c | 14 ++- drivers/usb/core/devio.c | 6 +- drivers/usb/gadget/function/f_ncm.c | 2 +- drivers/usb/gadget/udc/gr_udc.c | 2 +- drivers/usb/usbip/usbip_common.c | 2 +- .../video/fbdev/omap2/omapfb/dss/hdmi4_core.c | 2 +- .../video/fbdev/omap2/omapfb/dss/hdmi5_core.c | 2 +- drivers/watchdog/wdrtas.c | 2 +- fs/ceph/mdsmap.c | 2 +- fs/ecryptfs/debug.c | 2 +- fs/ext4/super.c | 2 +- fs/jfs/xattr.c | 2 +- fs/seq_file.c | 2 +- fs/smb/client/cifs_debug.c | 2 +- fs/smb/client/misc.c | 2 +- fs/ubifs/debug.c | 2 +- fs/ubifs/scan.c | 3 +- fs/xfs/xfs_message.c | 3 +- include/linux/dma/ti-cppi5.h | 2 +- include/linux/dynamic_debug.h | 8 +- include/linux/filter.h | 2 +- include/linux/mlx5/cq.h | 2 +- include/linux/printk.h | 23 ++-- include/net/6lowpan.h | 4 +- lib/hexdump.c | 29 ++++- lib/test_bitmap.c | 4 +- mm/debug.c | 4 +- mm/dmapool.c | 2 +- mm/kmemleak.c | 2 +- mm/page_poison.c | 2 +- mm/slub.c | 3 +- net/atm/br2684.c | 3 +- net/atm/lec.c | 6 +- net/ceph/crypto.c | 6 +- net/ceph/messenger.c | 9 +- net/ceph/osdmap.c | 4 +- net/core/skbuff.c | 8 +- net/ipv4/route.c | 2 +- net/nfc/digital_core.c | 4 +- net/nfc/llcp_core.c | 5 +- samples/rpmsg/rpmsg_client_sample.c | 2 +- security/integrity/ima/ima_kexec.c | 2 +- sound/soc/codecs/hdac_hdmi.c | 2 +- sound/soc/intel/atom/sst/sst_ipc.c | 2 +- sound/soc/intel/catpt/loader.c | 14 +-- sound/soc/intel/skylake/skl-messages.c | 2 +- sound/soc/intel/skylake/skl-sst-ipc.c | 2 +- sound/soc/sof/ipc3.c | 2 +- sound/soc/sof/ipc4.c | 2 +- sound/usb/bcd2000/bcd2000.c | 2 +- sound/usb/quirks.c | 4 +- sound/usb/validate.c | 6 +- .../crypto/chacha20-s390/test-cipher.c | 23 ++-- tools/testing/nvdimm/test/nfit.c | 2 +- 219 files changed, 655 insertions(+), 532 deletions(-) -- 2.43.0
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