From: Steven Rostedt <rostedt@goodmis.org>
To: kbuild test robot <lkp@intel.com>
Cc: Alexei Starovoitov <ast@kernel.org>,
kbuild-all@lists.01.org, linux-kernel@vger.kernel.org
Subject: Re: kernel//trace/fgraph.c:111:35: error: 'MCOUNT_INSN_SIZE' undeclared; did you mean 'UCOUNT_COUNTS'?
Date: Thu, 2 Jan 2020 22:07:54 -0500 [thread overview]
Message-ID: <20200102220754.5dc61fcc@rorschach.local.home> (raw)
In-Reply-To: <202001020219.zvE3vsty%lkp@intel.com>
On Thu, 2 Jan 2020 02:09:22 +0800
kbuild test robot <lkp@intel.com> wrote:
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head: 738d2902773e30939a982c8df7a7f94293659810
> commit: ff205766dbbee024a4a716638868d98ffb17748a ftrace: Fix function_graph tracer interaction with BPF trampoline
> date: 3 weeks ago
> config: riscv-randconfig-a001-20200102 (attached as .config)
> compiler: riscv64-linux-gcc (GCC) 7.5.0
> reproduce:
> wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
> chmod +x ~/bin/make.cross
> git checkout ff205766dbbee024a4a716638868d98ffb17748a
> # save the attached .config to linux build tree
> GCC_VERSION=7.5.0 make.cross ARCH=riscv
>
> If you fix the issue, kindly add following tag
> Reported-by: kbuild test robot <lkp@intel.com>
>
> All errors (new ones prefixed by >>):
>
> kernel//trace/fgraph.c: In function 'function_graph_enter':
> >> kernel//trace/fgraph.c:111:35: error: 'MCOUNT_INSN_SIZE' undeclared (first use in this function); did you mean 'UCOUNT_COUNTS'?
> ftrace_find_rec_direct(ret - MCOUNT_INSN_SIZE))
> ^~~~~~~~~~~~~~~~
> UCOUNT_COUNTS
> kernel//trace/fgraph.c:111:35: note: each undeclared identifier is reported only once for each function it appears in
>
>
The next two patches should fix this. The second patch fixes a
different location with the same problem. It appears that without
DYNAMIC_FTRACE (which x86 always has now) that this isn't defined.
-- Steve
next prev parent reply other threads:[~2020-01-03 3:07 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-01 18:09 kernel//trace/fgraph.c:111:35: error: 'MCOUNT_INSN_SIZE' undeclared; did you mean 'UCOUNT_COUNTS'? kbuild test robot
2020-01-03 3:07 ` Steven Rostedt [this message]
2020-01-03 3:09 ` [PATCH] tracing: Define MCOUNT_INSN_SIZE when not defined without direct calls Steven Rostedt
2020-01-03 3:09 ` [PATCH] tracing: Have stack tracer compile when MCOUNT_INSN_SIZE is not defined Steven Rostedt
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