From: Dave Martin <Dave.Martin@arm.com>
To: Nathan Huckleberry <nhuck@google.com>
Cc: Tri Vo <trong@google.com>,
linux@armlinux.org.uk, linux-kernel@vger.kernel.org,
clang-built-linux <clang-built-linux@googlegroups.com>,
Robin Murphy <robin.murphy@arm.com>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [RFC PATCH] ARM: UNWINDER_FRAME_POINTER implementation for Clang
Date: Wed, 7 Aug 2019 11:29:37 +0100 [thread overview]
Message-ID: <20190807102935.GE10425@arm.com> (raw)
In-Reply-To: <CAJkfWY5EL+MyRzSfcfJF2H8WoX73FEO0bOrwcoR4c4ekvaWvOQ@mail.gmail.com>
On Tue, Aug 06, 2019 at 02:29:16PM -0700, Nathan Huckleberry wrote:
> I'm not sure that we should disable a broken feature instead of
> attempting a fix.
>
> CONFIG_FUNCTION_GRAPH_TRACER is dependent on CONFIG_FRAME_POINTER and
> there have been reports by MediaTek that the frame pointer unwinder is
> faster in some cases.
Fair enough, just wanted to be sure we weren't doing something pointless.
[...]
Cheers
---Dave
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WARNING: multiple messages have this Message-ID (diff)
From: Dave Martin <Dave.Martin@arm.com>
To: Nathan Huckleberry <nhuck@google.com>
Cc: Tri Vo <trong@google.com>,
linux@armlinux.org.uk, linux-kernel@vger.kernel.org,
clang-built-linux <clang-built-linux@googlegroups.com>,
Robin Murphy <robin.murphy@arm.com>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [RFC PATCH] ARM: UNWINDER_FRAME_POINTER implementation for Clang
Date: Wed, 7 Aug 2019 11:29:37 +0100 [thread overview]
Message-ID: <20190807102935.GE10425@arm.com> (raw)
In-Reply-To: <CAJkfWY5EL+MyRzSfcfJF2H8WoX73FEO0bOrwcoR4c4ekvaWvOQ@mail.gmail.com>
On Tue, Aug 06, 2019 at 02:29:16PM -0700, Nathan Huckleberry wrote:
> I'm not sure that we should disable a broken feature instead of
> attempting a fix.
>
> CONFIG_FUNCTION_GRAPH_TRACER is dependent on CONFIG_FRAME_POINTER and
> there have been reports by MediaTek that the frame pointer unwinder is
> faster in some cases.
Fair enough, just wanted to be sure we weren't doing something pointless.
[...]
Cheers
---Dave
next prev parent reply other threads:[~2019-08-07 10:29 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-01 23:10 [RFC PATCH] ARM: UNWINDER_FRAME_POINTER implementation for Clang Nathan Huckleberry
2019-08-01 23:10 ` Nathan Huckleberry
2019-08-02 14:24 ` Robin Murphy
2019-08-02 14:24 ` Robin Murphy
2019-08-02 17:27 ` Nathan Huckleberry
2019-08-02 17:27 ` Nathan Huckleberry
2019-08-05 13:39 ` Dave Martin
2019-08-05 13:39 ` Dave Martin
2019-08-06 21:29 ` Nathan Huckleberry
2019-08-06 21:29 ` Nathan Huckleberry
2019-08-07 10:29 ` Dave Martin [this message]
2019-08-07 10:29 ` Dave Martin
2019-08-12 23:49 ` Nick Desaulniers
2019-08-12 23:49 ` Nick Desaulniers
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