From: Peter Zijlstra <peterz@infradead.org>
To: Vineet Gupta <vineet.gupta1@synopsys.com>
Cc: "will.deacon@arm.com" <will.deacon@arm.com>,
"aneesh.kumar@linux.vnet.ibm.com"
<aneesh.kumar@linux.vnet.ibm.com>,
"akpm@linux-foundation.org" <akpm@linux-foundation.org>,
"npiggin@gmail.com" <npiggin@gmail.com>,
"linux-arch@vger.kernel.org" <linux-arch@vger.kernel.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux@armlinux.org.uk" <linux@armlinux.org.uk>,
"heiko.carstens@de.ibm.com" <heiko.carstens@de.ibm.com>,
"riel@surriel.com" <riel@surriel.com>,
Richard Henderson <rth@twiddle.net>,
Mark Salter <msalter@redhat.com>,
Richard Kuo <rkuo@codeaurora.org>,
Michal Simek <monstr@monstr.eu>,
Paul Burton <paul.burton@mips.com>,
Greentime Hu <green.hu@gmail.com>,
Ley Foon Tan <lftan@altera.com>
Subject: Re: [PATCH 12/18] arch/tlb: Clean up simple architectures
Date: Mon, 15 Oct 2018 16:14:58 +0200 [thread overview]
Message-ID: <20181015141458.GQ9867@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <C2D7FE5348E1B147BCA15975FBA23075012B0ADA16@US01WEMBX2.internal.synopsys.com>
On Fri, Oct 12, 2018 at 07:40:04PM +0000, Vineet Gupta wrote:
> Very nice. Thx for doing this.
>
> Once you have redone this, please point me to a branch so I can give this a spin.
> I've always been interested in tracking down / optimizing the full TLB flushes -
> which ARC implements by simply moving the MMU/process to a new ASID (TLB entries
> tagged with an 8 bit value - unique per process). When I started looking into this
> , a simple ls (fork+execve) would increment the ASID by 13 which I'd optimized to
> a reasonable 4. Haven't checked that in recent times though so would be fun to
> revive that measurement.
I just pushed out the latest version to:
git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git mm/tlb
(mandatory caution: that tree is unstable / throw-away)
I'll wait a few days to see what, if anything, comes back from 0day
before posting again.
WARNING: multiple messages have this Message-ID (diff)
From: Peter Zijlstra <peterz@infradead.org>
To: Vineet Gupta <vineet.gupta1@synopsys.com>
Cc: "will.deacon@arm.com" <will.deacon@arm.com>,
"aneesh.kumar@linux.vnet.ibm.com"
<aneesh.kumar@linux.vnet.ibm.com>,
"akpm@linux-foundation.org" <akpm@linux-foundation.org>,
"npiggin@gmail.com" <npiggin@gmail.com>,
"linux-arch@vger.kernel.org" <linux-arch@vger.kernel.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux@armlinux.org.uk" <linux@armlinux.org.uk>,
"heiko.carstens@de.ibm.com" <heiko.carstens@de.ibm.com>,
"riel@surriel.com" <riel@surriel.com>,
Richard Henderson <rth@twiddle.net>,
Mark Salter <msalter@redhat.com>,
Richard Kuo <rkuo@codeaurora.org>,
Michal Simek <monstr@monstr.eu>,
Paul Burton <paul.burton@mips.com>,
Greentime Hu <green.hu@gmail.com>,
Ley Foon Tan <lftan@altera.com>, Jonas Bonn <jonas@southpole.se>,
Helge Deller <deller@gmx.de>,
"David S. Miller" <davem@davemloft.net>,
Guan Xuetao <gxt@pku.edu.cn>, Max Filippov <jcmvbkbc@gmail.com>,
arcml <linux-snps-arc@lists.infradead.org>
Subject: Re: [PATCH 12/18] arch/tlb: Clean up simple architectures
Date: Mon, 15 Oct 2018 16:14:58 +0200 [thread overview]
Message-ID: <20181015141458.GQ9867@hirez.programming.kicks-ass.net> (raw)
Message-ID: <20181015141458.uLhyv3OaSQIRHKQd8nNXV81M7Pk-ZeatsoJIumHChz0@z> (raw)
In-Reply-To: <C2D7FE5348E1B147BCA15975FBA23075012B0ADA16@US01WEMBX2.internal.synopsys.com>
On Fri, Oct 12, 2018 at 07:40:04PM +0000, Vineet Gupta wrote:
> Very nice. Thx for doing this.
>
> Once you have redone this, please point me to a branch so I can give this a spin.
> I've always been interested in tracking down / optimizing the full TLB flushes -
> which ARC implements by simply moving the MMU/process to a new ASID (TLB entries
> tagged with an 8 bit value - unique per process). When I started looking into this
> , a simple ls (fork+execve) would increment the ASID by 13 which I'd optimized to
> a reasonable 4. Haven't checked that in recent times though so would be fun to
> revive that measurement.
I just pushed out the latest version to:
git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git mm/tlb
(mandatory caution: that tree is unstable / throw-away)
I'll wait a few days to see what, if anything, comes back from 0day
before posting again.
next prev parent reply other threads:[~2018-10-15 14:14 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-26 11:36 [PATCH 00/18] my generic mmu_gather patches Peter Zijlstra
2018-09-26 11:36 ` Peter Zijlstra
2018-09-26 11:36 ` [PATCH 01/18] asm-generic/tlb: Provide a comment Peter Zijlstra
2018-09-26 11:36 ` Peter Zijlstra
2018-09-26 11:36 ` [PATCH 02/18] asm-generic/tlb: Provide HAVE_MMU_GATHER_PAGE_SIZE Peter Zijlstra
2018-09-26 11:36 ` Peter Zijlstra
2018-09-26 11:36 ` [PATCH 03/18] x86/mm: Page size aware flush_tlb_mm_range() Peter Zijlstra
2018-09-26 11:36 ` Peter Zijlstra
2018-09-26 11:36 ` [PATCH 04/18] asm-generic/tlb: Provide generic VIPT cache flush Peter Zijlstra
2018-09-26 11:36 ` Peter Zijlstra
2018-09-26 11:36 ` [PATCH 05/18] asm-generic/tlb: Provide generic tlb_flush Peter Zijlstra
2018-09-26 11:36 ` Peter Zijlstra
2018-09-26 12:53 ` Will Deacon
2018-09-26 12:53 ` Will Deacon
2018-09-26 13:11 ` Peter Zijlstra
2018-09-26 13:11 ` Peter Zijlstra
2018-09-26 18:07 ` Peter Zijlstra
2018-09-26 18:07 ` Peter Zijlstra
2018-09-27 12:14 ` Will Deacon
2018-09-27 12:14 ` Will Deacon
2018-09-26 11:36 ` [PATCH 06/18] asm-generic/tlb: Conditionally provide tlb_migrate_finish() Peter Zijlstra
2018-09-26 11:36 ` Peter Zijlstra
2018-09-26 12:53 ` Will Deacon
2018-09-26 12:53 ` Will Deacon
2018-09-26 11:36 ` [PATCH 07/18] asm-generic/tlb: Invert HAVE_RCU_TABLE_INVALIDATE Peter Zijlstra
2018-09-26 11:36 ` Peter Zijlstra
2018-09-26 11:36 ` [PATCH 08/18] arm/tlb: Convert to generic mmu_gather Peter Zijlstra
2018-09-26 11:36 ` Peter Zijlstra
2018-09-26 12:54 ` Will Deacon
2018-09-26 12:54 ` Will Deacon
2018-09-26 11:36 ` [PATCH 09/18] ia64/tlb: Conver " Peter Zijlstra
2018-09-26 11:36 ` Peter Zijlstra
2018-09-26 11:36 ` [PATCH 10/18] sh/tlb: Convert SH " Peter Zijlstra
2018-09-26 11:36 ` Peter Zijlstra
2018-09-26 11:36 ` [PATCH 11/18] um/tlb: Convert " Peter Zijlstra
2018-09-26 11:36 ` Peter Zijlstra
2018-09-26 11:36 ` [PATCH 12/18] arch/tlb: Clean up simple architectures Peter Zijlstra
2018-09-26 11:36 ` Peter Zijlstra
2018-10-03 17:03 ` Vineet Gupta
2018-10-03 17:03 ` Vineet Gupta
2018-10-11 15:04 ` Peter Zijlstra
2018-10-11 15:04 ` Peter Zijlstra
2018-10-12 19:40 ` Vineet Gupta
2018-10-12 19:40 ` Vineet Gupta
2018-10-15 14:14 ` Peter Zijlstra [this message]
2018-10-15 14:14 ` Peter Zijlstra
2018-09-26 11:36 ` [PATCH 13/18] asm-generic/tlb: Introduce HAVE_MMU_GATHER_NO_GATHER Peter Zijlstra
2018-09-26 11:36 ` Peter Zijlstra
2018-12-11 5:43 ` Aneesh Kumar K.V
2018-12-11 5:43 ` Aneesh Kumar K.V
2018-09-26 11:36 ` [PATCH 14/18] s390/tlb: convert to generic mmu_gather Peter Zijlstra
2018-09-26 11:36 ` Peter Zijlstra
2018-09-26 11:36 ` [PATCH 15/18] asm-generic/tlb: Remove arch_tlb*_mmu() Peter Zijlstra
2018-09-26 11:36 ` Peter Zijlstra
2018-09-26 11:36 ` [PATCH 16/18] asm-generic/tlb: Remove HAVE_GENERIC_MMU_GATHER Peter Zijlstra
2018-09-26 11:36 ` Peter Zijlstra
2018-09-26 11:36 ` [PATCH 17/18] asm-generic/tlb: Remove tlb_flush_mmu_free() Peter Zijlstra
2018-09-26 11:36 ` Peter Zijlstra
2018-09-26 11:36 ` [PATCH 18/18] asm-generic/tlb: Remove tlb_table_flush() Peter Zijlstra
2018-09-26 11:36 ` Peter Zijlstra
2018-09-26 12:47 ` [PATCH 00/18] my generic mmu_gather patches Will Deacon
2018-09-26 12:47 ` Will Deacon
2018-12-11 5:50 ` Aneesh Kumar K.V
2018-12-11 5:50 ` Aneesh Kumar K.V
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