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Date: Fri, 15 Jan 2021 09:57:53 +0530
From: Viresh Kumar <viresh.kumar@...aro.org>
To: linux-kernel@...r.kernel.org
Cc: Linus Torvalds <torvalds@...ux-foundation.org>,
Robert Richter <rric@...nel.org>,
Vincent Guittot <vincent.guittot@...aro.org>,
Arnd Bergmann <arnd@...nel.org>, oprofile-list@...ts.sf.net,
William Cohen <wcohen@...hat.com>,
Alexander Viro <viro@...iv.linux.org.uk>,
anmar.oueja@...aro.org
Subject: Re: [PATCH 00/18] drivers: Remove oprofile and dcookies
+LKML (Not sure why the cover-letter didn't go to LKML but everything else).
On 14-01-21, 17:04, Viresh Kumar wrote:
> Hello,
>
> The "oprofile" user-space tools don't use the kernel OPROFILE support
> any more, and haven't in a long time. User-space has been converted to
> the perf interfaces.
>
> Remove oprofile and dcookies (whose only user is oprofile) support from
> the kernel.
>
> This was suggested here [1] earlier.
>
> This is build/boot tested by kernel test robot (Intel) and Linaro's
> Tuxmake[2] for a lot of architectures and no failures were reported.
>
> --
> Viresh
>
> [1] https://lore.kernel.org/lkml/CAHk-=whw9t3ZtV8iA2SJWYQS1VOJuS14P_qhj3v5-9PCBmGQww@mail.gmail.com/
> [2] https://lwn.net/Articles/841624/
>
> Viresh Kumar (18):
> arch: alpha: Remove CONFIG_OPROFILE support
> arch: arm: Remove CONFIG_OPROFILE support
> arch: arc: Remove CONFIG_OPROFILE support
> arch: hexagon: Don't select HAVE_OPROFILE
> arch: ia64: Remove CONFIG_OPROFILE support
> arch: ia64: Remove rest of perfmon support
> arch: microblaze: Remove CONFIG_OPROFILE support
> arch: mips: Remove CONFIG_OPROFILE support
> arch: parisc: Remove CONFIG_OPROFILE support
> arch: powerpc: Stop building and using oprofile
> arch: powerpc: Remove oprofile
> arch: s390: Remove CONFIG_OPROFILE support
> arch: sh: Remove CONFIG_OPROFILE support
> arch: sparc: Remove CONFIG_OPROFILE support
> arch: x86: Remove CONFIG_OPROFILE support
> arch: xtensa: Remove CONFIG_OPROFILE support
> drivers: Remove CONFIG_OPROFILE support
> fs: Remove dcookies support
>
> Documentation/RCU/NMI-RCU.rst | 3 +-
> .../admin-guide/kernel-parameters.txt | 14 -
> Documentation/kbuild/makefiles.rst | 1 -
> Documentation/process/magic-number.rst | 1 -
> .../it_IT/process/magic-number.rst | 1 -
> .../zh_CN/process/magic-number.rst | 1 -
> MAINTAINERS | 11 -
> arch/Kconfig | 32 -
> arch/alpha/Kconfig | 1 -
> arch/alpha/Makefile | 1 -
> arch/alpha/oprofile/Makefile | 20 -
> arch/alpha/oprofile/common.c | 189 --
> arch/alpha/oprofile/op_impl.h | 55 -
> arch/alpha/oprofile/op_model_ev4.c | 114 --
> arch/alpha/oprofile/op_model_ev5.c | 209 --
> arch/alpha/oprofile/op_model_ev6.c | 101 -
> arch/alpha/oprofile/op_model_ev67.c | 261 ---
> arch/arc/Kconfig | 1 -
> arch/arc/Makefile | 2 -
> arch/arc/oprofile/Makefile | 10 -
> arch/arc/oprofile/common.c | 23 -
> arch/arm/Kconfig | 1 -
> arch/arm/Makefile | 2 -
> arch/arm/configs/bcm2835_defconfig | 1 -
> arch/arm/configs/cns3420vb_defconfig | 1 -
> arch/arm/configs/corgi_defconfig | 1 -
> arch/arm/configs/imx_v4_v5_defconfig | 1 -
> arch/arm/configs/keystone_defconfig | 1 -
> arch/arm/configs/multi_v5_defconfig | 1 -
> arch/arm/configs/mv78xx0_defconfig | 1 -
> arch/arm/configs/mvebu_v5_defconfig | 1 -
> arch/arm/configs/omap1_defconfig | 1 -
> arch/arm/configs/omap2plus_defconfig | 1 -
> arch/arm/configs/orion5x_defconfig | 1 -
> arch/arm/configs/pxa_defconfig | 1 -
> arch/arm/configs/qcom_defconfig | 1 -
> arch/arm/configs/socfpga_defconfig | 1 -
> arch/arm/configs/spitz_defconfig | 1 -
> arch/arm/configs/vexpress_defconfig | 1 -
> arch/arm/oprofile/Makefile | 14 -
> arch/arm/oprofile/common.c | 132 --
> arch/hexagon/Kconfig | 1 -
> arch/ia64/Kconfig | 1 -
> arch/ia64/Makefile | 1 -
> arch/ia64/configs/bigsur_defconfig | 1 -
> arch/ia64/include/asm/hw_irq.h | 1 -
> arch/ia64/include/asm/perfmon.h | 111 --
> arch/ia64/include/uapi/asm/perfmon.h | 178 --
> .../include/uapi/asm/perfmon_default_smpl.h | 84 -
> arch/ia64/kernel/palinfo.c | 41 -
> arch/ia64/kernel/perfmon_default_smpl.c | 297 ---
> arch/ia64/kernel/perfmon_generic.h | 46 -
> arch/ia64/kernel/perfmon_itanium.h | 2 +-
> arch/ia64/kernel/perfmon_mckinley.h | 188 --
> arch/ia64/kernel/perfmon_montecito.h | 270 ---
> arch/ia64/oprofile/Makefile | 10 -
> arch/ia64/oprofile/backtrace.c | 131 --
> arch/ia64/oprofile/init.c | 28 -
> arch/microblaze/Kconfig | 1 -
> arch/microblaze/Makefile | 2 -
> arch/microblaze/oprofile/Makefile | 14 -
> .../microblaze/oprofile/microblaze_oprofile.c | 22 -
> arch/mips/Kconfig | 3 +-
> arch/mips/Makefile | 1 -
> arch/mips/configs/fuloong2e_defconfig | 1 -
> arch/mips/configs/ip32_defconfig | 1 -
> arch/mips/configs/lemote2f_defconfig | 1 -
> arch/mips/configs/mtx1_defconfig | 1 -
> arch/mips/configs/rs90_defconfig | 1 -
> .../include/asm/mach-loongson2ef/loongson.h | 9 -
> arch/mips/loongson2ef/fuloong-2e/irq.c | 2 +-
> arch/mips/loongson2ef/lemote-2f/irq.c | 1 -
> arch/mips/oprofile/Makefile | 18 -
> arch/mips/oprofile/backtrace.c | 177 --
> arch/mips/oprofile/common.c | 147 --
> arch/mips/oprofile/op_impl.h | 41 -
> arch/mips/oprofile/op_model_loongson2.c | 161 --
> arch/mips/oprofile/op_model_loongson3.c | 213 --
> arch/mips/oprofile/op_model_mipsxx.c | 479 -----
> arch/parisc/Kconfig | 1 -
> arch/parisc/Makefile | 2 -
> arch/parisc/oprofile/Makefile | 10 -
> arch/parisc/oprofile/init.c | 23 -
> arch/powerpc/Kconfig | 1 -
> arch/powerpc/Makefile | 2 -
> arch/powerpc/configs/44x/akebono_defconfig | 1 -
> arch/powerpc/configs/44x/currituck_defconfig | 1 -
> arch/powerpc/configs/44x/fsp2_defconfig | 1 -
> arch/powerpc/configs/44x/iss476-smp_defconfig | 1 -
> arch/powerpc/configs/cell_defconfig | 1 -
> arch/powerpc/configs/g5_defconfig | 1 -
> arch/powerpc/configs/maple_defconfig | 1 -
> arch/powerpc/configs/pasemi_defconfig | 1 -
> arch/powerpc/configs/pmac32_defconfig | 1 -
> arch/powerpc/configs/powernv_defconfig | 1 -
> arch/powerpc/configs/ppc64_defconfig | 1 -
> arch/powerpc/configs/ppc64e_defconfig | 1 -
> arch/powerpc/configs/ppc6xx_defconfig | 1 -
> arch/powerpc/configs/ps3_defconfig | 1 -
> arch/powerpc/configs/pseries_defconfig | 1 -
> arch/powerpc/include/asm/cputable.h | 20 -
> arch/powerpc/include/asm/oprofile_impl.h | 135 --
> arch/powerpc/include/asm/spu.h | 33 -
> arch/powerpc/kernel/cputable.c | 67 -
> arch/powerpc/kernel/dt_cpu_ftrs.c | 2 -
> arch/powerpc/oprofile/Makefile | 19 -
> arch/powerpc/oprofile/backtrace.c | 120 --
> arch/powerpc/oprofile/cell/pr_util.h | 110 --
> arch/powerpc/oprofile/cell/spu_profiler.c | 248 ---
> arch/powerpc/oprofile/cell/spu_task_sync.c | 657 -------
> arch/powerpc/oprofile/cell/vma_map.c | 279 ---
> arch/powerpc/oprofile/common.c | 243 ---
> arch/powerpc/oprofile/op_model_7450.c | 207 --
> arch/powerpc/oprofile/op_model_cell.c | 1709 -----------------
> arch/powerpc/oprofile/op_model_fsl_emb.c | 380 ----
> arch/powerpc/oprofile/op_model_pa6t.c | 227 ---
> arch/powerpc/oprofile/op_model_power4.c | 438 -----
> arch/powerpc/platforms/cell/Kconfig | 5 -
> arch/powerpc/platforms/cell/spu_notify.c | 55 -
> arch/powerpc/platforms/cell/spufs/run.c | 4 +-
> arch/powerpc/platforms/cell/spufs/sched.c | 5 -
> arch/powerpc/platforms/cell/spufs/spufs.h | 1 -
> arch/s390/Kconfig | 1 -
> arch/s390/Makefile | 3 -
> arch/s390/configs/debug_defconfig | 1 -
> arch/s390/configs/defconfig | 1 -
> arch/s390/oprofile/Makefile | 10 -
> arch/s390/oprofile/init.c | 37 -
> arch/sh/Kconfig | 1 -
> arch/sh/Makefile | 1 -
> arch/sh/configs/espt_defconfig | 1 -
> arch/sh/configs/migor_defconfig | 1 -
> arch/sh/configs/r7780mp_defconfig | 1 -
> arch/sh/configs/r7785rp_defconfig | 1 -
> arch/sh/configs/rsk7201_defconfig | 1 -
> arch/sh/configs/rsk7203_defconfig | 1 -
> arch/sh/configs/rts7751r2d1_defconfig | 1 -
> arch/sh/configs/rts7751r2dplus_defconfig | 1 -
> arch/sh/configs/sdk7786_defconfig | 1 -
> arch/sh/configs/se7206_defconfig | 1 -
> arch/sh/configs/sh03_defconfig | 1 -
> arch/sh/configs/sh7724_generic_defconfig | 1 -
> arch/sh/configs/sh7763rdp_defconfig | 1 -
> arch/sh/configs/sh7770_generic_defconfig | 1 -
> arch/sh/configs/shx3_defconfig | 1 -
> arch/sh/oprofile/Makefile | 16 -
> arch/sh/oprofile/backtrace.c | 80 -
> arch/sh/oprofile/common.c | 64 -
> arch/sparc/Kconfig | 1 -
> arch/sparc/Makefile | 1 -
> arch/sparc/configs/sparc64_defconfig | 1 -
> arch/sparc/oprofile/Makefile | 10 -
> arch/sparc/oprofile/init.c | 87 -
> arch/x86/Kconfig | 1 -
> arch/x86/Makefile | 3 -
> arch/x86/include/asm/nmi.h | 1 -
> arch/x86/kernel/cpu/perfctr-watchdog.c | 11 +-
> arch/x86/oprofile/Makefile | 12 -
> arch/x86/oprofile/backtrace.c | 127 --
> arch/x86/oprofile/init.c | 38 -
> arch/x86/oprofile/nmi_int.c | 780 --------
> arch/x86/oprofile/op_counter.h | 30 -
> arch/x86/oprofile/op_model_amd.c | 542 ------
> arch/x86/oprofile/op_model_p4.c | 723 -------
> arch/x86/oprofile/op_model_ppro.c | 245 ---
> arch/x86/oprofile/op_x86_model.h | 90 -
> arch/xtensa/Kconfig | 1 -
> arch/xtensa/Makefile | 1 -
> arch/xtensa/configs/audio_kc705_defconfig | 1 -
> arch/xtensa/configs/generic_kc705_defconfig | 1 -
> arch/xtensa/configs/smp_lx200_defconfig | 1 -
> arch/xtensa/configs/xip_kc705_defconfig | 1 -
> arch/xtensa/kernel/stacktrace.c | 2 +-
> arch/xtensa/oprofile/Makefile | 10 -
> arch/xtensa/oprofile/backtrace.c | 27 -
> arch/xtensa/oprofile/init.c | 26 -
> drivers/oprofile/buffer_sync.c | 591 ------
> drivers/oprofile/buffer_sync.h | 22 -
> drivers/oprofile/cpu_buffer.c | 465 -----
> drivers/oprofile/cpu_buffer.h | 121 --
> drivers/oprofile/event_buffer.c | 209 --
> drivers/oprofile/event_buffer.h | 40 -
> drivers/oprofile/nmi_timer_int.c | 157 --
> drivers/oprofile/oprof.c | 286 ---
> drivers/oprofile/oprof.h | 50 -
> drivers/oprofile/oprofile_files.c | 201 --
> drivers/oprofile/oprofile_perf.c | 328 ----
> drivers/oprofile/oprofile_stats.c | 84 -
> drivers/oprofile/oprofile_stats.h | 33 -
> drivers/oprofile/oprofilefs.c | 300 ---
> drivers/oprofile/timer_int.c | 122 --
> fs/Makefile | 1 -
> fs/dcookies.c | 356 ----
> include/linux/dcookies.h | 69 -
> include/linux/oprofile.h | 209 --
> init/Kconfig | 2 +-
> kernel/sys.c | 1 -
> usr/include/Makefile | 2 -
> 198 files changed, 8 insertions(+), 15566 deletions(-)
> delete mode 100644 arch/alpha/oprofile/Makefile
> delete mode 100644 arch/alpha/oprofile/common.c
> delete mode 100644 arch/alpha/oprofile/op_impl.h
> delete mode 100644 arch/alpha/oprofile/op_model_ev4.c
> delete mode 100644 arch/alpha/oprofile/op_model_ev5.c
> delete mode 100644 arch/alpha/oprofile/op_model_ev6.c
> delete mode 100644 arch/alpha/oprofile/op_model_ev67.c
> delete mode 100644 arch/arc/oprofile/Makefile
> delete mode 100644 arch/arc/oprofile/common.c
> delete mode 100644 arch/arm/oprofile/Makefile
> delete mode 100644 arch/arm/oprofile/common.c
> delete mode 100644 arch/ia64/include/asm/perfmon.h
> delete mode 100644 arch/ia64/include/uapi/asm/perfmon.h
> delete mode 100644 arch/ia64/include/uapi/asm/perfmon_default_smpl.h
> delete mode 100644 arch/ia64/kernel/perfmon_default_smpl.c
> delete mode 100644 arch/ia64/kernel/perfmon_generic.h
> delete mode 100644 arch/ia64/kernel/perfmon_mckinley.h
> delete mode 100644 arch/ia64/kernel/perfmon_montecito.h
> delete mode 100644 arch/ia64/oprofile/Makefile
> delete mode 100644 arch/ia64/oprofile/backtrace.c
> delete mode 100644 arch/ia64/oprofile/init.c
> delete mode 100644 arch/microblaze/oprofile/Makefile
> delete mode 100644 arch/microblaze/oprofile/microblaze_oprofile.c
> delete mode 100644 arch/mips/oprofile/Makefile
> delete mode 100644 arch/mips/oprofile/backtrace.c
> delete mode 100644 arch/mips/oprofile/common.c
> delete mode 100644 arch/mips/oprofile/op_impl.h
> delete mode 100644 arch/mips/oprofile/op_model_loongson2.c
> delete mode 100644 arch/mips/oprofile/op_model_loongson3.c
> delete mode 100644 arch/mips/oprofile/op_model_mipsxx.c
> delete mode 100644 arch/parisc/oprofile/Makefile
> delete mode 100644 arch/parisc/oprofile/init.c
> delete mode 100644 arch/powerpc/include/asm/oprofile_impl.h
> delete mode 100644 arch/powerpc/oprofile/Makefile
> delete mode 100644 arch/powerpc/oprofile/backtrace.c
> delete mode 100644 arch/powerpc/oprofile/cell/pr_util.h
> delete mode 100644 arch/powerpc/oprofile/cell/spu_profiler.c
> delete mode 100644 arch/powerpc/oprofile/cell/spu_task_sync.c
> delete mode 100644 arch/powerpc/oprofile/cell/vma_map.c
> delete mode 100644 arch/powerpc/oprofile/common.c
> delete mode 100644 arch/powerpc/oprofile/op_model_7450.c
> delete mode 100644 arch/powerpc/oprofile/op_model_cell.c
> delete mode 100644 arch/powerpc/oprofile/op_model_fsl_emb.c
> delete mode 100644 arch/powerpc/oprofile/op_model_pa6t.c
> delete mode 100644 arch/powerpc/oprofile/op_model_power4.c
> delete mode 100644 arch/powerpc/platforms/cell/spu_notify.c
> delete mode 100644 arch/s390/oprofile/Makefile
> delete mode 100644 arch/s390/oprofile/init.c
> delete mode 100644 arch/sh/oprofile/Makefile
> delete mode 100644 arch/sh/oprofile/backtrace.c
> delete mode 100644 arch/sh/oprofile/common.c
> delete mode 100644 arch/sparc/oprofile/Makefile
> delete mode 100644 arch/sparc/oprofile/init.c
> delete mode 100644 arch/x86/oprofile/Makefile
> delete mode 100644 arch/x86/oprofile/backtrace.c
> delete mode 100644 arch/x86/oprofile/init.c
> delete mode 100644 arch/x86/oprofile/nmi_int.c
> delete mode 100644 arch/x86/oprofile/op_counter.h
> delete mode 100644 arch/x86/oprofile/op_model_amd.c
> delete mode 100644 arch/x86/oprofile/op_model_p4.c
> delete mode 100644 arch/x86/oprofile/op_model_ppro.c
> delete mode 100644 arch/x86/oprofile/op_x86_model.h
> delete mode 100644 arch/xtensa/oprofile/Makefile
> delete mode 100644 arch/xtensa/oprofile/backtrace.c
> delete mode 100644 arch/xtensa/oprofile/init.c
> delete mode 100644 drivers/oprofile/buffer_sync.c
> delete mode 100644 drivers/oprofile/buffer_sync.h
> delete mode 100644 drivers/oprofile/cpu_buffer.c
> delete mode 100644 drivers/oprofile/cpu_buffer.h
> delete mode 100644 drivers/oprofile/event_buffer.c
> delete mode 100644 drivers/oprofile/event_buffer.h
> delete mode 100644 drivers/oprofile/nmi_timer_int.c
> delete mode 100644 drivers/oprofile/oprof.c
> delete mode 100644 drivers/oprofile/oprof.h
> delete mode 100644 drivers/oprofile/oprofile_files.c
> delete mode 100644 drivers/oprofile/oprofile_perf.c
> delete mode 100644 drivers/oprofile/oprofile_stats.c
> delete mode 100644 drivers/oprofile/oprofile_stats.h
> delete mode 100644 drivers/oprofile/oprofilefs.c
> delete mode 100644 drivers/oprofile/timer_int.c
> delete mode 100644 fs/dcookies.c
> delete mode 100644 include/linux/dcookies.h
> delete mode 100644 include/linux/oprofile.h
>
>
> base-commit: 7c53f6b671f4aba70ff15e1b05148b10d58c2837
> --
> 2.25.0.rc1.19.g042ed3e048af
>
--
viresh
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