From: Borislav Petkov <bp@alien8.de>
To: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>,
LKML <linux-kernel@vger.kernel.org>,
Linux PM <linux-pm@vger.kernel.org>,
Rafael Wysocki <rafael.j.wysocki@intel.com>,
"H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@redhat.com>,
X86 Kernel <x86@kernel.org>,
Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>,
Peter Zijlstra <peterz@infradead.org>
Subject: Re: [PATCH v2 2/2] powercap/rapl: reduce ipi calls
Date: Wed, 13 Jan 2016 17:36:10 +0100 [thread overview]
Message-ID: <20160113163610.GH12897@pd.tnic> (raw)
In-Reply-To: <20160113082113.3314fa92@icelake>
On Wed, Jan 13, 2016 at 08:21:13AM -0800, Jacob Pan wrote:
> Thanks for bring this out. I didn't mean to ignore. I thought my point
> was stated in the commit message there was no point of going back and
> forth. Read-Modify-Write is quite common, not just for RAPL could be
> used by future code. Sorry if I wasn't clear.
But it also shows that it doesn't suffice for all your needs. So why add
it?
You can much better define your own functions which do all the MSR
handling you require and call them with smp_call_function_*.
--
Regards/Gruss,
Boris.
ECO tip #101: Trim your mails when you reply.
next prev parent reply other threads:[~2016-01-13 16:36 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-13 1:11 [PATCH v2 0/2] Reduce IPI calls for remote msr access Jacob Pan
2016-01-13 1:11 ` [PATCH v2 1/2] x86/msr: add on cpu read/modify/write function Jacob Pan
2016-01-13 1:11 ` [PATCH v2 2/2] powercap/rapl: reduce ipi calls Jacob Pan
2016-01-13 9:47 ` Thomas Gleixner
2016-01-13 16:21 ` Jacob Pan
2016-01-13 16:36 ` Borislav Petkov [this message]
2016-01-13 17:51 ` Jacob Pan
2016-01-13 18:04 ` Borislav Petkov
2016-01-13 18:21 ` Jacob Pan
2016-01-13 19:16 ` Borislav Petkov
2016-01-13 20:10 ` Jacob Pan
2016-01-13 21:26 ` Borislav Petkov
2016-01-13 21:54 ` Srinivas Pandruvada
2016-01-13 22:02 ` Thomas Gleixner
2016-01-13 22:11 ` Jacob Pan
2016-01-13 22:23 ` H. Peter Anvin
2016-01-13 22:16 ` Borislav Petkov
2016-01-13 22:39 ` Srinivas Pandruvada
2016-01-13 22:20 ` Jacob Pan
2016-01-13 22:29 ` Borislav Petkov
2016-01-13 21:49 ` Thomas Gleixner
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