From: Steven Rostedt <rostedt@goodmis.org>
To: Youling Tang <tangyouling@loongson.cn>
Cc: Huacai Chen <chenhuacai@kernel.org>,
Masami Hiramatsu <mhiramat@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
WANG Xuerui <kernel@xen0n.name>,
linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org,
loongarch@lists.linux.dev, loongson-kernel@lists.loongnix.cn,
Qing Zhang <zhangqing@loongson.cn>
Subject: Re: [PATCH v2 4/5] LoongArch: ftrace: Add direct call trampoline samples support
Date: Tue, 23 May 2023 10:34:38 -0400 [thread overview]
Message-ID: <20230523103438.7be15275@rorschach.local.home> (raw)
In-Reply-To: <1682561552-32324-5-git-send-email-tangyouling@loongson.cn>
On Thu, 27 Apr 2023 10:12:31 +0800
Youling Tang <tangyouling@loongson.cn> wrote:
> The ftrace samples need per-architecture trampoline implementations
> to save and restore argument registers around the calls to
> my_direct_func* and to restore polluted registers (eg: ra).
>
> Signed-off-by: Qing Zhang <zhangqing@loongson.cn>
> Signed-off-by: Youling Tang <tangyouling@loongson.cn>
> ---
> arch/loongarch/Kconfig | 2 +
> samples/ftrace/ftrace-direct-modify.c | 34 +++++++++++++++++
> samples/ftrace/ftrace-direct-multi-modify.c | 41 +++++++++++++++++++++
> samples/ftrace/ftrace-direct-multi.c | 25 +++++++++++++
> samples/ftrace/ftrace-direct-too.c | 27 ++++++++++++++
> samples/ftrace/ftrace-direct.c | 23 ++++++++++++
> 6 files changed, 152 insertions(+)
Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org>
-- Steve
next prev parent reply other threads:[~2023-05-23 14:34 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-27 2:12 [PATCH v2 0/5] LoongArch: ftrace: Add direct call support and code simplification Youling Tang
2023-04-27 2:12 ` [PATCH v2 1/5] LoongArch: Fix build error if CONFIG_DYNAMIC_FTRACE_WITH_REGS is not set Youling Tang
2023-04-27 2:12 ` [PATCH v2 2/5] LoongArch: ftrace: Implement ftrace_find_callable_addr() to simplify code Youling Tang
2023-04-27 2:12 ` [PATCH v2 3/5] LoongArch: ftrace: Add direct call support Youling Tang
2023-04-27 2:12 ` [PATCH v2 4/5] LoongArch: ftrace: Add direct call trampoline samples support Youling Tang
2023-05-23 14:34 ` Steven Rostedt [this message]
2023-04-27 2:12 ` [PATCH v2 5/5] LoongArch: Abstract DYNAMIC_FTRACE_WITH_ARGS accesses Youling Tang
2023-04-27 6:16 ` Enze Li
2023-04-27 6:47 ` Youling Tang
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