From: Masahiro Yamada <masahiroy@kernel.org>
To: Ingo Molnar <mingo@kernel.org>
Cc: Michal Marek <michal.lkml@markovi.net>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: kbuild: Ctrl-C of parallel kernel build sometimes corrupts .o.cmd files permanently
Date: Fri, 4 Jun 2021 12:22:33 +0900 [thread overview]
Message-ID: <CAK7LNAQ73zG69F4hMJhgrHp8yT9tUmb-0tN=kFtWA98-YV3eNA@mail.gmail.com> (raw)
In-Reply-To: <YLjOjZVetM4UbUPn@gmail.com>
On Thu, Jun 3, 2021 at 9:44 PM Ingo Molnar <mingo@kernel.org> wrote:
>
>
> * Ingo Molnar <mingo@kernel.org> wrote:
>
> > > CC security/keys/keyctl_pkey.o
> > > CC kernel/sys.o
> > > CC arch/x86/power/hibernate_64.o
> > > ^Cmake[5]: *** Deleting file 'drivers/video/fbdev/core/fbcmap.o' <---- Deleting
> > > make[5]: *** [scripts/Makefile.build:272:
> > > drivers/video/fbdev/core/fbmon.o] Interrupt
> > > make[3]: *** [scripts/Makefile.build:272: security/selinux/nlmsgtab.o] Interrupt
> > > make[2]: *** [scripts/Makefile.build:272: arch/x86/power/cpu.o] Interrupt
> > > make[2]: *** [scripts/Makefile.build:272:
> >
> > Interestingly I don't get *any* interruption messages at all:
> >
> > CC drivers/dma/dw/acpi.o
> > CC sound/pci/ice1712/ice1712.o
> > CC drivers/char/ipmi/ipmi_watchdog.o
> > CC fs/overlayfs/export.o
> > CC fs/nls/nls_cp936.o
> > CC drivers/char/ipmi/ipmi_poweroff.o
> > ^Ckepler:~/tip>
> >
> > The '^C' there - it just stops, make never prints anything for me.
>
> Found something - seems to be related whether the build is going into a
> pipe or not.
>
>
> I usually build this way (directly or via a script):
>
> make -j96 bzImage ARCH=x86 2>&1 | tee e
>
> Ctrl-C interruption is not handled by kbuild in this case:
>
> CC fs/jffs2/xattr_trusted.o
> CC sound/firewire/motu/motu-transaction.o
> CC sound/usb/clock.o
> ^Ckepler:~/tip>
>
> Immediate prompt - no cleanup sequence.
>
> But if I do it without 'tee', I get the expected cleanup sequence by make:
>
> kepler:~/tip> make -j96 bzImage ARCH=x86 2>&1
>
> CC fs/jffs2/acl.o
> CC sound/pci/echoaudio/mona.o
> CC fs/nls/nls_iso8859-9.o
> ^Cmake[2]: *** Deleting file 'drivers/reset/core.o'
> make[3]: *** Deleting file 'sound/pci/mixart/mixart.o'
> make[3]: *** Deleting file 'sound/pci/emu10k1/voice.o'
> make[2]: *** Deleting file 'fs/gfs2/aops.o'
>
> Thanks,
>
> Ingo
Hmm, I do not know why GNU Make behaves like this...
I will ask about this in GNU Make ML.
--
Best Regards
Masahiro Yamada
next prev parent reply other threads:[~2021-06-04 3:23 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-02 15:50 kbuild: Ctrl-C of parallel kernel build sometimes corrupts .o.cmd files permanently Ingo Molnar
2021-06-02 18:20 ` Masahiro Yamada
2021-06-03 12:39 ` Ingo Molnar
2021-06-03 12:43 ` Ingo Molnar
2021-06-04 3:22 ` Masahiro Yamada [this message]
2021-06-09 13:59 ` Masahiro Yamada
2021-06-12 13:25 ` Ingo Molnar
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