From: Michael Neuling <mikey@neuling.org>
To: Anshuman Khandual <khandual@linux.vnet.ibm.com>,
Anton Blanchard <anton@samba.org>,
benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au,
cyrilbur@gmail.com, scottwood@freescale.com
Cc: linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH 00/19] Context switch improvements
Date: Thu, 03 Dec 2015 09:37:28 +1100 [thread overview]
Message-ID: <1449095848.30090.119.camel@neuling.org> (raw)
In-Reply-To: <565EAF03.5010104@linux.vnet.ibm.com>
On Wed, 2015-12-02 at 14:12 +0530, Anshuman Khandual wrote:
> On 10/29/2015 06:13 AM, Anton Blanchard wrote:
> > Here are various improvements to our context switch path. Some of
> > the
> > highlights:
> >=20
> > - Group all mfsprs and mtsprs in __switch_to(), which gives us a
> > 10% improvement on POWER8.
> >=20
> > - Create giveup_all() and flush_all_to_thread() so we only write
> > the
> > MSR once, which gives us a 3% improvement on POWER8.
> >=20
> > - Create disable_kernel_{fp,altivec,vsx,spe}() and add a debug boot
> > option (ppc_strict_facility_enable) to minimise kernel code
> > running
> > with floating point and vector bits enabled.
> >=20
> > - Make giveup_vsx() and flush_vsx_to_thread() handle FP and Altivec
> > state, so they behave more like their sister functions.
> >=20
> > Scott: There are changes to the SPE code here which I have only
> > been
> > able to compile test.
>=20
> Hey Anton,
>=20
> Wondering if you have a git tree hosted some where to pull these
> patches ?
The 0day bot does this automatically for you...
https://github.com/0day-ci/linux/tree/Anton-Blanchard/Context-switch-improv=
ements/20151029-092229
Mikey
prev parent reply other threads:[~2015-12-02 22:37 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-29 0:43 [PATCH 00/19] Context switch improvements Anton Blanchard
2015-10-29 0:43 ` [PATCH 01/19] powerpc: Don't disable kernel FP/VMX/VSX MSR bits on context switch Anton Blanchard
2015-12-07 10:30 ` [01/19] " Michael Ellerman
2015-10-29 0:43 ` [PATCH 02/19] powerpc: Don't disable MSR bits in do_load_up_transact_*() functions Anton Blanchard
2015-10-29 0:43 ` [PATCH 03/19] powerpc: Create context switch helpers save_sprs() and restore_sprs() Anton Blanchard
2017-09-02 3:42 ` Benjamin Herrenschmidt
2015-10-29 0:43 ` [PATCH 04/19] powerpc: Remove redundant mflr in _switch Anton Blanchard
2015-10-29 0:43 ` [PATCH 05/19] powerpc: Remove UP only lazy floating point and vector optimisations Anton Blanchard
2015-10-29 0:43 ` [PATCH 06/19] powerpc: Simplify TM restore checks Anton Blanchard
2015-10-29 0:43 ` [PATCH 07/19] powerpc: Create mtmsrd_isync() Anton Blanchard
2015-12-01 11:23 ` Michael Ellerman
2015-12-01 23:25 ` Michael Ellerman
2017-09-02 3:44 ` Benjamin Herrenschmidt
2015-10-29 0:44 ` [PATCH 08/19] powerpc: Remove NULL task struct pointer checks in FP and vector code Anton Blanchard
2015-10-29 0:44 ` [PATCH 09/19] powerpc: Move part of giveup_fpu,altivec,spe into c Anton Blanchard
2015-12-01 11:17 ` Michael Ellerman
2015-10-29 0:44 ` [PATCH 10/19] powerpc: Move part of giveup_vsx " Anton Blanchard
2015-10-29 0:44 ` [PATCH 11/19] crypto: vmx: Only call enable_kernel_vsx() Anton Blanchard
2015-10-29 0:44 ` [PATCH 12/19] powerpc: Create msr_check_and_{set,clear}() Anton Blanchard
2015-10-29 7:25 ` kbuild test robot
2015-10-29 0:44 ` [PATCH 13/19] powerpc: Create disable_kernel_{fp,altivec,vsx,spe}() Anton Blanchard
2015-10-29 0:44 ` [PATCH 14/19] powerpc: Add ppc_strict_facility_enable boot option Anton Blanchard
2017-09-02 3:48 ` Benjamin Herrenschmidt
2015-10-29 0:44 ` [PATCH 15/19] powerpc: Remove fp_enable() and vec_enable(), use msr_check_and_{set, clear}() Anton Blanchard
2015-10-29 0:44 ` [PATCH 16/19] powerpc: create giveup_all() Anton Blanchard
2015-12-02 8:24 ` Michael Ellerman
2015-10-29 0:44 ` [PATCH 17/19] powerpc: create flush_all_to_thread() Anton Blanchard
2015-10-29 0:44 ` [PATCH 18/19] powerpc: Rearrange __switch_to() Anton Blanchard
2015-10-29 0:44 ` [PATCH 19/19] powerpc: clean up asm/switch_to.h Anton Blanchard
2015-12-02 8:42 ` [PATCH 00/19] Context switch improvements Anshuman Khandual
2015-12-02 22:37 ` Michael Neuling [this message]
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