linux-kernel - Re: [PATCH 10/18] arch: powerpc: Stop building and using oprofile

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Date:   Mon, 18 Jan 2021 10:17:29 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Robert Richter <rric@...nel.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Arnd Bergmann <arnd@...db.de>, Jeremy Kerr <jk@...abs.org>
Cc:     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, Christoph Hellwig <hch@...radead.org>,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 10/18] arch: powerpc: Stop building and using oprofile

On 14-01-21, 17:05, Viresh Kumar wrote:
> 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.
> 
> This commits stops building oprofile for powerpc and removes any
> reference to it from directories in arch/powerpc/ apart from
> arch/powerpc/oprofile, which will be removed in the next commit (this is
> broken into two commits as the size of the commit became very big, ~5k
> lines).
> 
> Note that the member "oprofile_cpu_type" in "struct cpu_spec" isn't
> removed as it was also used by other parts of the code.
> 
> Suggested-by: Christoph Hellwig <hch@...radead.org>
> Suggested-by: Linus Torvalds <torvalds@...ux-foundation.org>
> Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
> ---
>  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/platforms/cell/Kconfig           |   5 -
>  arch/powerpc/platforms/cell/spu_notify.c      |  55 -------

+ this..

diff --git a/arch/powerpc/platforms/cell/Makefile b/arch/powerpc/platforms/cell/Makefile
index 10064a33ca96..7ea6692f67e2 100644
--- a/arch/powerpc/platforms/cell/Makefile
+++ b/arch/powerpc/platforms/cell/Makefile
@@ -19,7 +19,6 @@ spu-priv1-$(CONFIG_PPC_CELL_COMMON)   += spu_priv1_mmio.o
 spu-manage-$(CONFIG_PPC_CELL_COMMON)   += spu_manage.o
 
 obj-$(CONFIG_SPU_BASE)                 += spu_callbacks.o spu_base.o \
-                                          spu_notify.o \
                                           spu_syscalls.o \
                                           $(spu-priv1-y) \
                                           $(spu-manage-y) \

-- 
viresh