From: Peter Zijlstra <peterz@infradead.org>
To: Artem Bityutskiy <dedekind1@gmail.com>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>,
x86@kernel.org, Linux PM Mailing List <linux-pm@vger.kernel.org>
Subject: Re: [PATCH 3/3] intel_idle: add C0.2 state for Sapphire Rapids Xeon
Date: Tue, 14 Mar 2023 13:24:50 +0100 [thread overview]
Message-ID: <20230314122450.GH1845660@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <12e008c7fd280c8abc45f417f64bb782485a40b8.camel@gmail.com>
On Thu, Mar 09, 2023 at 10:01:57AM +0200, Artem Bityutskiy wrote:
> Could you please help by giving a hint how to verify?
I think you need both:
DEBUG_ENTRY and TRACE_IRQFLAGS
I can reproduce with:
make O=defconfig-build defconfig
cd defconfig-build
../scripts/config --enable INTEL_IDLE
../scripts/config --enable DEBUG_ENTRY
../scripts/config --enable IRQSOFF_TRACER
cd ..
make O=defconfig-build -j32 vmlinux
But typically it is useful to have a .config with lots of tracing and
debug (including lockdep and debug_entry) enabled for this stuff.
next prev parent reply other threads:[~2023-03-14 13:27 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-06 12:34 [PATCH 0/3] Sapphire Rapids C0.x idle states support Artem Bityutskiy
2023-03-06 12:34 ` [PATCH 1/3] x86/mwait: Add support for idle via umwait Artem Bityutskiy
2023-03-06 14:55 ` Peter Zijlstra
2023-03-07 11:55 ` Rafael J. Wysocki
2023-03-08 12:35 ` Peter Zijlstra
2023-03-06 12:34 ` [PATCH 2/3] x86/umwait: Increase tpause and umwait quanta Artem Bityutskiy
2023-03-06 12:34 ` [PATCH 3/3] intel_idle: add C0.2 state for Sapphire Rapids Xeon Artem Bityutskiy
2023-03-06 15:32 ` Peter Zijlstra
2023-03-07 12:39 ` Rafael J. Wysocki
2023-03-08 12:32 ` Peter Zijlstra
2023-03-09 8:01 ` Artem Bityutskiy
2023-03-14 12:24 ` Peter Zijlstra [this message]
2023-03-17 8:42 ` Artem Bityutskiy
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