[PATCH v2 00/11] lib/cpumask: get rid of cpumap_print_to_pagebuf()

From: Yury Norov <ynorov@nvidia.com>
To: Andrew Morton <akpm@linux-foundation.org>,
	Rasmus Villemoes <linux@rasmusvillemoes.dk>,
	Yury Norov <ynorov@nvidia.com>
Cc: "Russell King" <linux@armlinux.org.uk>,
	"Frank Li" <Frank.Li@nxp.com>,
	"Sascha Hauer" <s.hauer@pengutronix.de>,
	"Pengutronix Kernel Team" <kernel@pengutronix.de>,
	"Fabio Estevam" <festevam@gmail.com>,
	"Madhavan Srinivasan" <maddy@linux.ibm.com>,
	"Michael Ellerman" <mpe@ellerman.id.au>,
	"Nicholas Piggin" <npiggin@gmail.com>,
	"Christophe Leroy (CS GROUP)" <chleroy@kernel.org>,
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Subject: [PATCH v2 00/11] lib/cpumask: get rid of cpumap_print_to_pagebuf()
Date: Thu,  2 Jul 2026 11:47:13 -0400	[thread overview]
Message-ID: <20260702154725.185376-1-ynorov@nvidia.com> (raw)

cpumap_print_to_pagebuf() is the equivalent for the "&*pb[l]" notation
in printk-like functions. In some cases, it makes people to create
temporary buffers for the printed cpumasks, where it can be avoided.

Get rid of it in a favor of more standard printing API.

Each patch, except for the last one, is independent and may be moved with
the corresponding subsystem. Or I can take it in bitmap-for-next, at
maintainers' discretion.

On top of -next.

This is the resend of:

https://lore.kernel.org/all/20260528183625.870813-1-ynorov@nvidia.com/

Except the patches merged in 7.1 cycle. I'm going to apply the material
in 7.2 unless explicit NAKs received.

Yury Norov (11):
  arm: Use sysfs_emit() for cpumask show callbacks
  powerpc: Use sysfs_emit() for cpumask show callbacks
  x86/events: Use sysfs_emit() for cpumask show callbacks
  cpu: Use sysfs_emit() for cpumask show callback
  devfreq: Use sysfs_emit() for cpumask show callbacks
  fpga: dfl-fme-perf: Use sysfs_emit() for cpumask show
  hwtracing: hisi_ptt: Use sysfs_emit() for cpumask show
  RDMA/hfi1: Use sysfs_emit() for cpumask show helper
  PCI/sysfs: Use sysfs_emit() for cpumask show callbacks
  perf: Use sysfs_emit() for cpumask show callbacks
  lib/bitmap-str: get rid of cpumap_print_to_pagebuf()

 arch/arm/mach-imx/mmdc.c                    |  2 +-
 arch/arm/mm/cache-l2x0-pmu.c                |  2 +-
 arch/powerpc/kernel/cacheinfo.c             |  3 ++-
 arch/powerpc/perf/hv-24x7.c                 |  2 +-
 arch/powerpc/perf/hv-gpci.c                 |  2 +-
 arch/powerpc/perf/imc-pmu.c                 |  2 +-
 arch/x86/events/amd/iommu.c                 |  2 +-
 arch/x86/events/amd/power.c                 |  2 +-
 arch/x86/events/amd/uncore.c                |  2 +-
 arch/x86/events/intel/core.c                |  2 +-
 arch/x86/events/intel/uncore.c              |  2 +-
 drivers/base/cpu.c                          |  2 +-
 drivers/devfreq/event/rockchip-dfi.c        |  2 +-
 drivers/devfreq/hisi_uncore_freq.c          |  2 +-
 drivers/fpga/dfl-fme-perf.c                 |  2 +-
 drivers/hwtracing/ptt/hisi_ptt.c            |  2 +-
 drivers/infiniband/hw/hfi1/sdma.c           |  3 ++-
 drivers/pci/pci-sysfs.c                     |  7 ++++---
 drivers/perf/alibaba_uncore_drw_pmu.c       |  2 +-
 drivers/perf/amlogic/meson_ddr_pmu_core.c   |  2 +-
 drivers/perf/arm-cci.c                      |  2 +-
 drivers/perf/arm-ccn.c                      |  2 +-
 drivers/perf/arm-cmn.c                      |  2 +-
 drivers/perf/arm-ni.c                       |  2 +-
 drivers/perf/arm_cspmu/arm_cspmu.c          |  2 +-
 drivers/perf/arm_dmc620_pmu.c               |  4 ++--
 drivers/perf/arm_dsu_pmu.c                  |  2 +-
 drivers/perf/arm_pmu.c                      |  2 +-
 drivers/perf/arm_smmuv3_pmu.c               |  2 +-
 drivers/perf/arm_spe_pmu.c                  |  2 +-
 drivers/perf/cxl_pmu.c                      |  2 +-
 drivers/perf/dwc_pcie_pmu.c                 |  2 +-
 drivers/perf/fsl_imx8_ddr_perf.c            |  2 +-
 drivers/perf/fsl_imx9_ddr_perf.c            |  2 +-
 drivers/perf/fujitsu_uncore_pmu.c           |  2 +-
 drivers/perf/hisilicon/hisi_pcie_pmu.c      |  2 +-
 drivers/perf/hisilicon/hisi_uncore_pmu.c    |  2 +-
 drivers/perf/marvell_cn10k_ddr_pmu.c        |  2 +-
 drivers/perf/marvell_cn10k_tad_pmu.c        |  2 +-
 drivers/perf/marvell_pem_pmu.c              |  2 +-
 drivers/perf/nvidia_t410_c2c_pmu.c          |  2 +-
 drivers/perf/nvidia_t410_cmem_latency_pmu.c |  2 +-
 drivers/perf/qcom_l2_pmu.c                  |  2 +-
 drivers/perf/qcom_l3_pmu.c                  |  2 +-
 drivers/perf/starfive_starlink_pmu.c        |  2 +-
 drivers/perf/thunderx2_pmu.c                |  2 +-
 drivers/perf/xgene_pmu.c                    |  2 +-
 include/linux/cpumask.h                     | 19 -------------------
 kernel/events/core.c                        |  2 +-
 lib/bitmap-str.c                            |  9 ++++-----
 50 files changed, 58 insertions(+), 75 deletions(-)

-- 
2.53.0