From: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
To: "Gautham R. Shenoy" <ego@linux.vnet.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Michael Neuling <mikey@neuling.org>,
Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>,
Akshay Adiga <akshay.adiga@linux.vnet.ibm.com>,
Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com>,
"Oliver O'Halloran" <oohall@gmail.com>,
Nicholas Piggin <npiggin@gmail.com>,
Murilo Opsfelder Araujo <muriloo@linux.ibm.com>,
Anton Blanchard <anton@samba.org>,
linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v7 1/2] powerpc: Detect the presence of big-cores via "ibm,thread-groups"
Date: Mon, 20 Aug 2018 10:59:18 -0700 [thread overview]
Message-ID: <20180820175918.GA23117@linux.vnet.ibm.com> (raw)
In-Reply-To: <1534743704-4760-2-git-send-email-ego@linux.vnet.ibm.com>
* Gautham R. Shenoy <ego@linux.vnet.ibm.com> [2018-08-20 11:11:43]:
> From: "Gautham R. Shenoy" <ego@linux.vnet.ibm.com>
>
> On IBM POWER9, the device tree exposes a property array identifed by
one small nit:
s/identifed/identified/g
> "ibm,thread-groups" which will indicate which groups of threads share
> a particular set of resources.
>
> As of today we only have one form of grouping identifying the group of
> threads in the core that share the L1 cache, translation cache and
> instruction data flow.
>
> This patch defines the helper function to parse the contents of
> "ibm,thread-groups" and a new structure to contain the parsed output.
>
> The patch also creates the sysfs file named "small_core_siblings" that
> returns the physical ids of the threads in the core that share the L1
> cache, translation cache and instruction data flow.
>
> Signed-off-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com>
Otherwise looks good to me.
Reviewed-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
next prev parent reply other threads:[~2018-08-20 17:59 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-20 5:41 [PATCH v7 0/2] powerpc: Detection and scheduler optimization for POWER9 bigcore Gautham R. Shenoy
2018-08-20 5:41 ` [PATCH v7 1/2] powerpc: Detect the presence of big-cores via "ibm, thread-groups" Gautham R. Shenoy
2018-08-20 5:41 ` [PATCH v7 1/2] powerpc: Detect the presence of big-cores via "ibm,thread-groups" Gautham R. Shenoy
2018-08-20 17:59 ` Srikar Dronamraju [this message]
2018-08-29 7:04 ` Michael Neuling
2018-08-29 7:04 ` Michael Neuling
2018-08-29 7:13 ` Michael Neuling
2018-08-29 7:13 ` Michael Neuling
2018-08-20 5:41 ` [PATCH v7 2/2] powerpc: Use cpu_smallcore_sibling_mask at SMT level on bigcores Gautham R. Shenoy
2018-08-20 18:05 ` Srikar Dronamraju
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