From: Miroslav Benes <mbenes@suse.cz>
To: Heiko Carstens <hca@linux.ibm.com>
Cc: Jerome Marchand <jmarchan@redhat.com>,
Steven Rostedt <rostedt@goodmis.org>,
linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] recordmcount.pl: look for jgnop instruction as well as bcrl on s390
Date: Fri, 10 Dec 2021 13:31:23 +0100 (CET) [thread overview]
Message-ID: <alpine.LSU.2.21.2112101321010.5704@pobox.suse.cz> (raw)
In-Reply-To: <alpine.LSU.2.21.2112101310080.5704@pobox.suse.cz>
> > Otherwise I would be surprised that this would make any difference.
>
> How come? I mean, s390 does not define HAVE_C_RECORDMCOUNT which implies
> that recordmcount.pl is used (see scripts/Makefile.build and
> BUILD_C_RECORDMCOUNT definition in Makefile).
Ah, sorry, that was too quick.
I guess you want to say that recordmcount is not used at all and GCC
should do it. Because CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT is not set,
since FTRACE_MCOUNT_USE_CC should be set.
What a maze.
But isn't -mrecord-mcount x86_64-only option?
Miroslav
next prev parent reply other threads:[~2021-12-10 12:31 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-10 9:38 [PATCH] recordmcount.pl: look for jgnop instruction as well as bcrl on s390 Jerome Marchand
2021-12-10 9:57 ` Miroslav Benes
2021-12-10 10:58 ` Heiko Carstens
2021-12-10 12:16 ` Miroslav Benes
2021-12-10 12:31 ` Miroslav Benes [this message]
2021-12-10 15:51 ` Heiko Carstens
2021-12-10 17:40 ` Steven Rostedt
2021-12-13 8:13 ` Jerome Marchand
2021-12-23 8:52 ` Miroslav Benes
2021-12-23 17:40 ` Heiko Carstens
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