From: Masami Hiramatsu <mhiramat@kernel.org>
To: Catalin Marinas <catalin.marinas@arm.com>
Cc: Steven Rostedt <rostedt@goodmis.org>,
Naresh Kamboju <naresh.kamboju@linaro.org>,
Will Deacon <will.deacon@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
Ingo Molnar <mingo@redhat.com>,
Masami Hiramatsu <masami.hiramatsu@linaro.org>,
linux-kernel@vger.kernel.org, stable@vger.kernel.org
Subject: Re: [PATCH v2] arm64: ftrace: Fix to enable syscall events on arm64
Date: Fri, 30 Nov 2018 07:13:09 +0900 [thread overview]
Message-ID: <20181130071309.dfa552d2bcd7283788e5563e@kernel.org> (raw)
In-Reply-To: <20181129165329.GC22027@arrakis.emea.arm.com>
On Thu, 29 Nov 2018 16:53:30 +0000
Catalin Marinas <catalin.marinas@arm.com> wrote:
> On Thu, Nov 29, 2018 at 02:39:33PM +0900, Masami Hiramatsu wrote:
> > Since commit 4378a7d4be30 ("arm64: implement syscall wrappers")
> > introduced "__arm64_" prefix to all syscall wrapper symbols in
> > sys_call_table, syscall tracer can not find corresponding
> > metadata from syscall name. In the result, we have no syscall
> > ftrace events on arm64 kernel, and some bpf testcases are failed
> > on arm64.
> >
> > To fix this issue, this introduces custom
> > arch_syscall_match_sym_name() which skips first 8 bytes when
> > comparing the syscall and symbol names.
> >
> > Fixes: 4378a7d4be30 ("arm64: implement syscall wrappers")
> > Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org>
> > Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
> > Acked-by: Will Deacon <will.deacon@arm.com>
> > Tested-by: Naresh Kamboju <naresh.kamboju@linaro.org>
> > Cc: stable@vger.kernel.org
>
> Queued for 4.20. Thanks.
Thank you Catalin!
>
> --
> Catalin
--
Masami Hiramatsu <mhiramat@kernel.org>
next prev parent reply other threads:[~2018-11-29 22:13 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
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 [this message]
2018-11-28 2:19 ` File not found: /sys/kernel/debug/tracing/events/syscalls Naresh Kamboju
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