From: Florent Revest <revest@chromium.org>
To: Mark Rutland <mark.rutland@arm.com>
Cc: linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org,
bpf@vger.kernel.org, catalin.marinas@arm.com, will@kernel.org,
rostedt@goodmis.org, mhiramat@kernel.org, ast@kernel.org,
daniel@iogearbox.net, andrii@kernel.org, kpsingh@kernel.org,
jolsa@kernel.org, xukuohai@huaweicloud.com
Subject: Re: [PATCH 5/8] ftrace: Make DIRECT_CALLS work WITH_ARGS and !WITH_REGS
Date: Thu, 2 Feb 2023 19:18:05 +0100 [thread overview]
Message-ID: <CABRcYmK1ns1escBFa4edjZtbykms-sfhsTL3HKs+Ljx3xOUwWQ@mail.gmail.com> (raw)
In-Reply-To: <Y9vcua0+JzjmTICO@FVFF77S0Q05N.cambridge.arm.com>
On Thu, Feb 2, 2023 at 4:54 PM Mark Rutland <mark.rutland@arm.com> wrote:
>
> On Wed, Feb 01, 2023 at 05:34:17PM +0100, Florent Revest wrote:
> > Direct called trampolines can be called in two ways:
> > - either from the ftrace callsite. In this case, they do not access any
> > struct ftrace_regs nor pt_regs
> > - Or, if a ftrace ops is also attached, from the end of a ftrace
> > trampoline. In this case, the call_direct_funcs ops is in charge of
> > setting the direct call trampoline's address in a struct ftrace_regs
> >
> > Since "ftrace: pass fregs to arch_ftrace_set_direct_caller()", the later
> > case no longer requires a full pt_regs.
>
> Minor nit, but could we please have the commit ID, e.g.
>
> | Since commit:
> |
> | 9705bc70960459ae ("ftrace: pass fregs to arch_ftrace_set_direct_caller()")
> |
> | The latter case no longer requires a full pt_regs.
Sure thing, will do!
next prev parent reply other threads:[~2023-02-02 18:18 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-01 16:34 [PATCH 0/8] Add ftrace direct call for arm64 Florent Revest
2023-02-01 16:34 ` [PATCH 1/8] ftrace: Replace uses of _ftrace_direct APIs with _ftrace_direct_multi Florent Revest
2023-02-02 15:01 ` Mark Rutland
2023-02-02 17:37 ` Florent Revest
2023-02-07 15:21 ` Florent Revest
2023-02-07 15:35 ` Steven Rostedt
2023-02-07 16:19 ` Florent Revest
2023-02-01 16:34 ` [PATCH 2/8] ftrace: Remove the legacy _ftrace_direct API Florent Revest
2023-02-02 15:11 ` Mark Rutland
2023-02-01 16:34 ` [PATCH 3/8] ftrace: Rename _ftrace_direct_multi APIs to _ftrace_direct APIs Florent Revest
2023-02-02 15:17 ` Mark Rutland
2023-02-01 16:34 ` [PATCH 4/8] ftrace: Store direct called addresses in their ops Florent Revest
2023-02-02 15:29 ` Mark Rutland
2023-02-02 17:41 ` Florent Revest
2023-02-01 16:34 ` [PATCH 5/8] ftrace: Make DIRECT_CALLS work WITH_ARGS and !WITH_REGS Florent Revest
2023-02-02 15:54 ` Mark Rutland
2023-02-02 16:56 ` Mark Rutland
2023-02-02 18:19 ` Florent Revest
2023-02-03 10:03 ` Mark Rutland
2023-02-03 11:01 ` Florent Revest
2023-02-02 18:18 ` Florent Revest [this message]
2023-02-01 16:34 ` [PATCH 6/8] ftrace: Fix dead loop caused by direct call in ftrace selftest Florent Revest
2023-02-02 19:03 ` Mark Rutland
2023-02-03 12:35 ` Florent Revest
2023-02-03 15:37 ` Mark Rutland
2023-02-06 16:25 ` Florent Revest
2023-02-01 16:34 ` [PATCH 7/8] arm64: ftrace: Add direct call support Florent Revest
2023-02-03 15:34 ` Mark Rutland
2023-02-06 16:25 ` Florent Revest
2023-02-01 16:34 ` [PATCH 8/8] arm64: ftrace: Add direct called trampoline samples support Florent Revest
2023-02-02 8:36 ` [PATCH 0/8] Add ftrace direct call for arm64 Xu Kuohai
2023-02-02 10:50 ` Daniel Borkmann
2023-02-02 17:32 ` Florent Revest
2023-02-02 20:06 ` Steven Rostedt
2023-02-03 9:49 ` Mark Rutland
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