From: Masami Hiramatsu <masami.hiramatsu@linaro.org>
To: Naresh Kamboju <naresh.kamboju@linaro.org>
Cc: Linux kernel mailing list <linux-kernel@vger.kernel.org>,
"Steven Rostedt (Red Hat)" <rostedt@goodmis.org>,
Ingo Molnar <mingo@redhat.com>,
Masami Hiramatsu <mhiramat@kernel.org>
Subject: Re: File not found: /sys/kernel/debug/tracing/events/syscalls
Date: Wed, 28 Nov 2018 01:11:22 +0900 [thread overview]
Message-ID: <CAA93ih1-xpm1P0suT6SNCc_ARvAfyBEwb0-uKFikM5k4CvG8jg@mail.gmail.com> (raw)
In-Reply-To: <CA+G9fYvgDP2+D2mgqxJJJYm1DTgxbByxjKuVGBFOa-m_fT7Q-Q@mail.gmail.com>
Hi,
I found that the commit 4378a7d4be30 ("arm64: implement syscall
wrappers") changed
the syscall wrapper function names by adding __arm64_ prefix. So arm64
kernel should
have its own arch_syscall_match_sym_name().
Thank you,
2018年11月28日(水) 0:22 Naresh Kamboju <naresh.kamboju@linaro.org>:
>
> While debugging the selftests/bpf: get_cgroup_id_user test failure on arm64
> where the test is expecting trace file
> /sys/kernel/debug/tracing/events/syscalls/sys_enter_nanosleep/id
> but this path not enabled after enabling required kernel configuration also.
> CONFIG_FTRACE_SYSCALLS=y
>
> strace output:
> open(\"/sys/kernel/debug/tracing/events/syscalls/sys_enter_nanosleep/id\",
> O_RDONLY) = -1 ENOENT (No such file or directory)
>
> This problem noticed on Linux mainline kernel version 4.20.0-rc3.
>
> Best regards
> Naresh Kamboju
--
Masami Hiramatsu
next prev parent reply other threads:[~2018-11-27 16:11 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-27 15:22 File not found: /sys/kernel/debug/tracing/events/syscalls Naresh Kamboju
2018-11-27 16:11 ` Masami Hiramatsu [this message]
2018-11-27 16:29 ` [PATCH] arm64: ftrace: Fix to enable syscall events on arm64 Masami Hiramatsu
2018-11-27 16:32 ` Steven Rostedt
2018-11-27 16:58 ` Will Deacon
2018-11-27 18:18 ` Steven Rostedt
2018-11-27 23:55 ` Masami Hiramatsu
2018-11-28 12:05 ` Will Deacon
2018-11-28 14:22 ` Steven Rostedt
2018-11-28 19:59 ` Will Deacon
2018-11-29 5:38 ` Masami Hiramatsu
2018-11-29 5:39 ` [PATCH v2] " Masami Hiramatsu
2018-11-29 16:53 ` Catalin Marinas
2018-11-29 22:13 ` Masami Hiramatsu
2018-11-28 2:19 ` File not found: /sys/kernel/debug/tracing/events/syscalls Naresh Kamboju
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