From: Guenter Roeck <linux@roeck-us.net>
To: Sami Tolvanen <samitolvanen@google.com>
Cc: Masahiro Yamada <masahiroy@kernel.org>,
Steven Rostedt <rostedt@goodmis.org>,
Will Deacon <will@kernel.org>,
Josh Poimboeuf <jpoimboe@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"Paul E. McKenney" <paulmck@kernel.org>,
Kees Cook <keescook@chromium.org>,
Nick Desaulniers <ndesaulniers@google.com>,
clang-built-linux@googlegroups.com,
kernel-hardening@lists.openwall.com, linux-arch@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-pci@vger.kernel.org, linux-parisc@vger.kernel.org,
Helge Deller <deller@gmx.de>
Subject: Re: [PATCH v9 01/16] tracing: move function tracer options to Kconfig (causing parisc build failures)
Date: Wed, 24 Feb 2021 12:17:23 -0800 [thread overview]
Message-ID: <20210224201723.GA69309@roeck-us.net> (raw)
In-Reply-To: <20201211184633.3213045-2-samitolvanen@google.com>
On Fri, Dec 11, 2020 at 10:46:18AM -0800, Sami Tolvanen wrote:
> Move function tracer options to Kconfig to make it easier to add
> new methods for generating __mcount_loc, and to make the options
> available also when building kernel modules.
>
> Note that FTRACE_MCOUNT_USE_* options are updated on rebuild and
> therefore, work even if the .config was generated in a different
> environment.
>
> Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
> Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
With this patch in place, parisc:allmodconfig no longer builds.
Error log:
Arch parisc is not supported with CONFIG_FTRACE_MCOUNT_RECORD at scripts/recordmcount.pl line 405.
make[2]: *** [scripts/mod/empty.o] Error 2
Due to this problem, CONFIG_FTRACE_MCOUNT_RECORD can no longer be
enabled in parisc builds. Since that is auto-selected by DYNAMIC_FTRACE,
DYNAMIC_FTRACE can no longer be enabled, and with it everything that
depends on it.
Bisect log attached.
Guenter
---
# bad: [414eece95b98b209cef0f49cfcac108fd00b8ced] Merge tag 'clang-lto-v5.12-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
# good: [b12b47249688915e987a9a2a393b522f86f6b7ab] Merge tag 'powerpc-5.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
git bisect start '414eece95b98' 'b12b47249688'
# bad: [f6e1e1d1e149802ed4062fa514c2d184d30aacdf] Merge tag 'gfs2-for-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2
git bisect bad f6e1e1d1e149802ed4062fa514c2d184d30aacdf
# bad: [79db4d2293eba2ce6265a341bedf6caecad5eeb3] Merge tag 'clang-lto-v5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
git bisect bad 79db4d2293eba2ce6265a341bedf6caecad5eeb3
# good: [9d5032f97e9e0655e8c507ab1f43237e31520b00] dt-bindings: mediatek: mt8192: Fix dt_binding_check warning
git bisect good 9d5032f97e9e0655e8c507ab1f43237e31520b00
# good: [f81f213850ca84b3d5e59e17d17acb2ecfc24076] Merge tag 'for-linus-5.12-1' of git://github.com/cminyard/linux-ipmi
git bisect good f81f213850ca84b3d5e59e17d17acb2ecfc24076
# bad: [112b6a8e038d793d016e330f53acb9383ac504b3] arm64: allow LTO to be selected
git bisect bad 112b6a8e038d793d016e330f53acb9383ac504b3
# bad: [3578ad11f3fba07e64c26d8db68cfd3dde28c59e] init: lto: fix PREL32 relocations
git bisect bad 3578ad11f3fba07e64c26d8db68cfd3dde28c59e
# bad: [22d429e75f24d114d99223389d6ba7047e952e32] kbuild: lto: limit inlining
git bisect bad 22d429e75f24d114d99223389d6ba7047e952e32
# bad: [dc5723b02e523b2c4a68667f7e28c65018f7202f] kbuild: add support for Clang LTO
git bisect bad dc5723b02e523b2c4a68667f7e28c65018f7202f
# bad: [3b15cdc15956673ba1551d79bceae471436ac6a9] tracing: move function tracer options to Kconfig
git bisect bad 3b15cdc15956673ba1551d79bceae471436ac6a9
# first bad commit: [3b15cdc15956673ba1551d79bceae471436ac6a9] tracing: move function tracer options to Kconfig
next prev parent reply other threads:[~2021-02-24 20:19 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-11 18:46 [PATCH v9 00/16] Add support for Clang LTO Sami Tolvanen
2020-12-11 18:46 ` [PATCH v9 01/16] tracing: move function tracer options to Kconfig Sami Tolvanen
2021-02-24 20:17 ` Guenter Roeck [this message]
2021-02-24 20:38 ` [PATCH v9 01/16] tracing: move function tracer options to Kconfig (causing parisc build failures) Kees Cook
2021-02-24 20:54 ` Sami Tolvanen
2021-02-24 22:29 ` Guenter Roeck
2021-02-24 22:28 ` Guenter Roeck
2021-02-24 22:42 ` Kees Cook
2020-12-11 18:46 ` [PATCH v9 02/16] kbuild: add support for Clang LTO Sami Tolvanen
2020-12-11 18:46 ` [PATCH v9 03/16] kbuild: lto: fix module versioning Sami Tolvanen
2020-12-11 18:46 ` [PATCH v9 04/16] kbuild: lto: limit inlining Sami Tolvanen
2020-12-11 18:46 ` [PATCH v9 05/16] kbuild: lto: merge module sections Sami Tolvanen
2020-12-11 18:46 ` [PATCH v9 06/16] kbuild: lto: add a default list of used symbols Sami Tolvanen
2020-12-11 19:32 ` Kees Cook
2020-12-11 19:40 ` Sami Tolvanen
2020-12-11 19:45 ` Nick Desaulniers
2020-12-11 18:46 ` [PATCH v9 07/16] init: lto: ensure initcall ordering Sami Tolvanen
2020-12-11 18:46 ` [PATCH v9 08/16] init: lto: fix PREL32 relocations Sami Tolvanen
2020-12-11 18:46 ` [PATCH v9 09/16] PCI: Fix PREL32 relocations for LTO Sami Tolvanen
2020-12-11 18:46 ` [PATCH v9 10/16] modpost: lto: strip .lto from module names Sami Tolvanen
2020-12-11 18:46 ` [PATCH v9 11/16] scripts/mod: disable LTO for empty.c Sami Tolvanen
2020-12-11 18:46 ` [PATCH v9 12/16] efi/libstub: disable LTO Sami Tolvanen
2020-12-11 18:46 ` [PATCH v9 13/16] drivers/misc/lkdtm: disable LTO for rodata.o Sami Tolvanen
2020-12-11 18:46 ` [PATCH v9 14/16] arm64: vdso: disable LTO Sami Tolvanen
2020-12-11 18:46 ` [PATCH v9 15/16] arm64: disable recordmcount with DYNAMIC_FTRACE_WITH_REGS Sami Tolvanen
2020-12-11 18:46 ` [PATCH v9 16/16] arm64: allow LTO to be selected Sami Tolvanen
2020-12-11 19:38 ` [PATCH v9 00/16] Add support for Clang LTO Kees Cook
2021-01-09 0:27 ` Kees Cook
2021-01-09 14:54 ` Sedat Dilek
2021-01-09 15:36 ` Josh Poimboeuf
2021-01-09 15:46 ` Sedat Dilek
2021-01-09 16:07 ` Josh Poimboeuf
2021-01-09 16:21 ` Sedat Dilek
2021-01-09 16:32 ` Josh Poimboeuf
2021-01-09 16:45 ` Sedat Dilek
2021-01-09 17:03 ` Josh Poimboeuf
2021-01-09 17:05 ` Josh Poimboeuf
2021-01-09 17:33 ` Sedat Dilek
2021-01-09 23:44 ` Sedat Dilek
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210224201723.GA69309@roeck-us.net \
--to=linux@roeck-us.net \
--cc=clang-built-linux@googlegroups.com \
--cc=deller@gmx.de \
--cc=gregkh@linuxfoundation.org \
--cc=jpoimboe@redhat.com \
--cc=keescook@chromium.org \
--cc=kernel-hardening@lists.openwall.com \
--cc=linux-arch@vger.kernel.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kbuild@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-parisc@vger.kernel.org \
--cc=linux-pci@vger.kernel.org \
--cc=masahiroy@kernel.org \
--cc=ndesaulniers@google.com \
--cc=paulmck@kernel.org \
--cc=peterz@infradead.org \
--cc=rostedt@goodmis.org \
--cc=samitolvanen@google.com \
--cc=will@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).