linux-kernel - Re: [PATCH 4.19 00/98] 4.19.321-rc1 review

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Message-ID: <98f6ad0c-65d0-4a39-8a11-a55b3dd83b7b@oracle.com>
Date: Mon, 2 Sep 2024 14:44:44 +0530
From: Harshit Mogalapalli <harshit.m.mogalapalli@...cle.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org
Cc: patches@...ts.linux.dev, linux-kernel@...r.kernel.org,
        torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
        linux@...ck-us.net, shuah@...nel.org, patches@...nelci.org,
        lkft-triage@...ts.linaro.org, pavel@...x.de, jonathanh@...dia.com,
        f.fainelli@...il.com, sudipm.mukherjee@...il.com, srw@...dewatkins.net,
        rwarsow@....de, conor@...nel.org, allen.lkml@...il.com,
        broonie@...nel.org, Vegard Nossum <vegard.nossum@...cle.com>
Subject: Re: [PATCH 4.19 00/98] 4.19.321-rc1 review

Hi Greg,

On 01/09/24 21:45, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 4.19.321 release.
> There are 98 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.
> 
> Responses should be made by Tue, 03 Sep 2024 16:07:34 +0000.
> Anything received after that time might be too late.

Build fails on our infrastructure.

BUILDSTDERR: In file included from 
/builddir/build/BUILD/kernel-4.19.321/linux-4.19.321-master.20240901.el7.dev/tools/include/linux/bitmap.h:6,
BUILDSTDERR:                  from 
/builddir/build/BUILD/kernel-4.19.321/linux-4.19.321-master.20240901.el7.dev/tools/perf/util/include/../../util/pmu.h:5,
BUILDSTDERR:                  from arch/x86/util/pmu.c:9:
BUILDSTDERR: 
/builddir/build/BUILD/kernel-4.19.321/linux-4.19.321-master.20240901.el7.dev/tools/include/linux/align.h:6:10: 
fatal error: uapi/linux/const.h: No such file or directory
BUILDSTDERR:  #include <uapi/linux/const.h>
BUILDSTDERR:           ^~~~~~~~~~~~~~~~~~~~
BUILDSTDERR: compilation terminated.

Looked at the commits:

This commit 993a20bf6225c: ("tools: move alignment-related macros to new 
<linux/align.h>") is causing that perf build to fail.

Solution is not to drop this patch as this is probably pulled in to 
support bitmap_size() macros in these commits(which are also part of 
this release):

6fbe5a3920f48 fix bitmap corruption on close_range() with 
CLOSE_RANGE_UNSHARE
ef9ebc42c10f8 bitmap: introduce generic optimized bitmap_size()

Applying the below diff, helps the perf build to pass: I think we should 
fold this into: commit 993a20bf6225c: ("tools: move alignment-related 
macros to new <linux/align.h>")

diff --git a/tools/include/linux/align.h b/tools/include/linux/align.h
index 14e34ace80dda..a27bc1edf6e5c 100644
--- a/tools/include/linux/align.h
+++ b/tools/include/linux/align.h
@@ -3,7 +3,7 @@
  #ifndef _TOOLS_LINUX_ALIGN_H
  #define _TOOLS_LINUX_ALIGN_H

-#include <uapi/linux/const.h>
+#include <linux/const.h>

  #define ALIGN(x, a)            __ALIGN_KERNEL((x), (a))
  #define ALIGN_DOWN(x, a)       __ALIGN_KERNEL((x) - ((a) - 1), (a))

!! But this breaks the build for arm here.
!! Not sure what is the best way to solve this problem.

Thanks,
Harshit