From: Ingo Molnar <mingo-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
To: Borislav Petkov <bp-Gina5bIWoIWzQB+pC5nmwQ@public.gmane.org>
Cc: Andrew Morton
<akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>,
Jonathan Corbet <corbet-T1hC0tSOHrs@public.gmane.org>,
Peter Zijlstra <peterz-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>,
Josh Triplett <josh-iaAMLnmF4UmaiuxdJuQwMA@public.gmane.org>,
Andy Lutomirski <luto-kltTT9wpgjJwATOyAt5JVQ@public.gmane.org>,
Ingo Molnar <mingo-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
"H. Peter Anvin" <hpa-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>,
Thomas Gleixner <tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>,
Linus Torvalds
<torvalds-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>,
linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
x86-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
linux-arch-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: [RFC PATCH v6] Documentation/arch: Add Documentation/arch-features.txt
Date: Wed, 13 May 2015 15:48:42 +0200 [thread overview]
Message-ID: <20150513134842.GA1657@gmail.com> (raw)
In-Reply-To: <20150513131835.GJ1517-fF5Pk5pvG8Y@public.gmane.org>
* Borislav Petkov <bp-Gina5bIWoIWzQB+pC5nmwQ@public.gmane.org> wrote:
> On Wed, May 13, 2015 at 11:47:56AM +0200, Ingo Molnar wrote:
> > - introduce the '..' denotion (in the final table) to show features
> > that cannot be supported by an architecture due to hardware
> > dependencies:
> >
> > gcov-profile-all:---------------.
> > THP:--------. |
> > irq-time-acct:-. | |
> > | | |
> > ----------------------------------------
> > alpha | TODO | TODO | TODO |
> > arc | TODO | .. | TODO |
> > arm | ok | ok | ok |
> > arm64 | TODO | ok | ok |
> > avr32 | TODO | .. | TODO |
> > blackfin | TODO | .. | TODO |
> > c6x | TODO | .. | TODO |
> >
> > so in the 'THP' column, if an architecture could in theory support
> > THP, it's listed as 'TODO', if it cannot, it's listed as '..'.
>
> Shouldn't exactly that explanation be in the text file itself too?
Yeah, indeed, added it.
> Also, how about s/TODO//g for less clutter:
No, I'd like there to be a very visible 'TODO' item for missing
features.
The 'clutter' shows how badly our generic kernel features are
propagating :-/ We hope to reduce this clutter in the future.
Updated patch attached - I've added a few more features to the last
table, and restructured the explanations, now every feature
description also lists the Kconfig variable that it's tracking, e.g.:
irq time acct: HAVE_IRQ_TIME_ACCOUNTING
THP: HAVE_ARCH_TRANSPARENT_HUGEPAGE && 64BIT
gcov profile all: ARCH_HAS_GCOV_PROFILE_ALL
rwsem optimized: Optimized asm/rwsem.h
queued spinlocks: ARCH_USE_QUEUED_SPINLOCKS
queued rwlocks: ARCH_USE_QUEUED_RWLOCKS
numa balancing: ARCH_SUPPORTS_NUMA_BALANCING && 64BIT && NUMA
Thanks,
Ingo
=========================================>
>From 93f6bd67b4348bf4bf27cbac8ffa9f1def4fa6aa Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Date: Wed, 13 May 2015 10:30:11 +0200
Subject: [PATCH] Documentation/arch: Add Documentation/arch-features.txt
Add a support matrix for various generic kernel features that need
architecture support.
Signed-off-by: Ingo Molnar <mingo-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
---
Documentation/arch-features.txt | 222 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 222 insertions(+)
diff --git a/Documentation/arch-features.txt b/Documentation/arch-features.txt
new file mode 100644
index 000000000000..4f6430bc552b
--- /dev/null
+++ b/Documentation/arch-features.txt
@@ -0,0 +1,222 @@
+
+For generic kernel features that need architecture support, this is
+the feature support matrix, for all upstream Linux architectures.
+
+Meaning of entries in the tables:
+
+ ' ok ': feature supported by the architecture
+ 'TODO': feature not yet supported by the architecture
+ ' .. ': feature cannot be supported by the hardware
+
+
+
+ lockdep: LOCKDEP_SUPPORT
+ stackprotector: HAVE_CC_STACKPROTECTOR
+ jump labels: HAVE_ARCH_JUMP_LABEL
+ seccomp filter: HAVE_ARCH_SECCOMP_FILTER
+ context tracking: HAVE_CONTEXT_TRACKING
+ kgdb: HAVE_ARCH_KGDB
+ modern timekeeping: !ARCH_USES_GETTIMEOFFSET
+ clockevents: GENERIC_CLOCKEVENTS
+ ELF ASLR: ARCH_HAS_ELF_RANDOMIZE
+
+ lockdep:---------------------------------------------------------.
+ stackprotector:--------------------------------------------------. |
+ jump labels:-------------------------------------------. | |
+ seccomp filter:------------------------------------. | | |
+ context tracking:-----------------------------. | | | |
+ kgdb:----------------------. | | | | |
+ modern timekeeping:---------------. | | | | | |
+ clockevents:--------. | | | | | | |
+ ELF ASLR:-. | | | | | | | |
+ | | | | | | | | |
+----------------------------------------------------------------------------------
+ alpha | TODO | ok | ok | TODO | TODO | TODO | TODO | TODO | TODO |
+ arc | TODO | ok | ok | ok | TODO | TODO | TODO | TODO | ok |
+ arm | ok | ok | TODO | ok | ok | ok | ok | ok | ok |
+ arm64 | ok | ok | ok | ok | ok | ok | ok | ok | ok |
+ avr32 | TODO | ok | ok | TODO | TODO | TODO | TODO | TODO | ok |
+ blackfin | TODO | ok | TODO | ok | TODO | TODO | TODO | TODO | ok |
+ c6x | TODO | ok | ok | TODO | TODO | TODO | TODO | TODO | TODO |
+ cris | TODO | ok | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ frv | TODO | TODO | ok | TODO | TODO | TODO | TODO | TODO | TODO |
+ hexagon | TODO | ok | ok | ok | TODO | TODO | TODO | TODO | ok |
+ ia64 | TODO | TODO | ok | TODO | TODO | TODO | TODO | TODO | TODO |
+ m32r | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ m68k | TODO | ok | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ metag | TODO | ok | ok | TODO | TODO | TODO | TODO | TODO | ok |
+ microblaze | TODO | ok | ok | ok | TODO | TODO | TODO | TODO | ok |
+ mips | ok | ok | ok | ok | ok | ok | ok | ok | ok |
+ mn10300 | TODO | ok | ok | ok | TODO | TODO | TODO | TODO | TODO |
+ nios2 | TODO | ok | ok | ok | TODO | TODO | TODO | TODO | TODO |
+ openrisc | TODO | ok | ok | TODO | TODO | TODO | TODO | TODO | TODO |
+ parisc | TODO | TODO | ok | TODO | TODO | TODO | TODO | TODO | TODO |
+ powerpc | ok | ok | ok | ok | ok | TODO | ok | TODO | ok |
+ s390 | ok | ok | ok | TODO | TODO | ok | ok | TODO | ok |
+ score | TODO | ok | ok | TODO | TODO | TODO | TODO | TODO | ok |
+ sh | TODO | ok | ok | ok | TODO | TODO | TODO | ok | ok |
+ sparc | TODO | ok | ok | ok | ok | TODO | ok | TODO | ok |
+ tile | TODO | ok | ok | ok | ok | TODO | TODO | TODO | ok |
+ um | TODO | ok | ok | TODO | TODO | TODO | TODO | TODO | ok |
+ unicore32 | TODO | ok | ok | TODO | TODO | TODO | TODO | TODO | ok |
+ x86 | ok | ok | ok | ok | ok | ok | ok | ok | ok |
+ xtensa | TODO | ok | ok | TODO | TODO | TODO | TODO | TODO | ok |
+----------------------------------------------------------------------------------
+
+
+arch tick broadcast: ARCH_HAS_TICK_BROADCAST
+ kprobes: HAVE_KPROBES
+ optprobes: HAVE_OPTPROBES
+ kprobes on ftrace: HAVE_KPROBES_ON_FTRACE
+ uprobes: ARCH_SUPPORTS_UPROBES
+ kretprobes: HAVE_KRETPROBES
+ user ret profiler: HAVE_USER_RETURN_NOTIFIER
+ ioremap_prot(): HAVE_IOREMAP_PROT
+ tracehook: HAVE_ARCH_TRACEHOOK
+
+arch tick broadcast:---------------------------------------------------------.
+ kprobes:--------------------------------------------------. |
+ optprobes:-------------------------------------------. | |
+ kprobes on ftrace:------------------------------------. | | |
+ uprobes:-----------------------------. | | | |
+ kretprobes:----------------------. | | | | |
+ user ret profiler:---------------. | | | | | |
+ ioremap_prot():--------. | | | | | | |
+ tracehook:-. | | | | | | | |
+ | | | | | | | | |
+----------------------------------------------------------------------------------
+ alpha | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ arc | ok | ok | TODO | ok | TODO | TODO | TODO | ok | TODO |
+ arm | ok | TODO | TODO | ok | ok | TODO | ok | ok | ok |
+ arm64 | ok | TODO | TODO | TODO | TODO | TODO | TODO | TODO | ok |
+ avr32 | TODO | TODO | TODO | TODO | TODO | TODO | TODO | ok | TODO |
+ blackfin | ok | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ c6x | ok | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ cris | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ frv | ok | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ hexagon | ok | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ ia64 | ok | TODO | TODO | ok | TODO | TODO | TODO | ok | TODO |
+ m32r | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ m68k | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ metag | ok | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ microblaze | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ mips | ok | TODO | TODO | ok | TODO | TODO | TODO | ok | ok |
+ mn10300 | ok | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ nios2 | ok | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ openrisc | ok | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ parisc | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ powerpc | ok | ok | TODO | ok | ok | TODO | TODO | ok | ok |
+ s390 | ok | TODO | TODO | ok | ok | TODO | TODO | ok | TODO |
+ score | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ sh | ok | ok | TODO | ok | TODO | TODO | TODO | ok | TODO |
+ sparc | ok | TODO | TODO | ok | TODO | TODO | TODO | ok | TODO |
+ tile | ok | ok | ok | ok | TODO | TODO | ok | ok | TODO |
+ um | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ unicore32 | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ x86 | ok | ok | ok | ok | ok | ok | ok | ok | TODO |
+ xtensa | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+----------------------------------------------------------------------------------
+
+
+generic idle thread: GENERIC_SMP_IDLE_THREAD
+ dma_*map*_attrs(): HAVE_DMA_ATTRS
+ dma contiguous: HAVE_DMA_CONTIGUOUS
+ kprobes event: HAVE_REGS_AND_STACK_ACCESS_API
+ dma api debug: HAVE_DMA_API_DEBUG
+ perf regs: HAVE_PERF_REGS
+ perf stackdump: HAVE_PERF_USER_STACK_DUMP
+ cmpxchg local: HAVE_CMPXCHG_LOCAL
+ virt cpuacct: HAVE_VIRT_CPU_ACCOUNTING || 64BIT
+
+generic idle thread:---------------------------------------------------------.
+ dma_*map*_attrs():--------------------------------------------------. |
+ dma contiguous:-------------------------------------------. | |
+ kprobes event:------------------------------------. | | |
+ dma api debug:-----------------------------. | | | |
+ perf regs:----------------------. | | | | |
+ perf stackdump:---------------. | | | | | |
+ cmpxchg local:--------. | | | | | | |
+ virt cpuacct:-. | | | | | | | |
+ | | | | | | | | |
+----------------------------------------------------------------------------------
+ alpha | ok | TODO | TODO | TODO | TODO | TODO | TODO | ok | ok |
+ arc | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | ok |
+ arm | ok | TODO | ok | ok | ok | ok | ok | ok | ok |
+ arm64 | ok | TODO | ok | ok | ok | TODO | ok | ok | ok |
+ avr32 | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ blackfin | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | ok |
+ c6x | TODO | TODO | TODO | TODO | ok | TODO | TODO | TODO | TODO |
+ cris | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ frv | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ hexagon | TODO | TODO | TODO | TODO | TODO | ok | TODO | ok | ok |
+ ia64 | ok | TODO | TODO | TODO | ok | TODO | TODO | ok | ok |
+ m32r | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ m68k | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ metag | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | ok |
+ microblaze | TODO | TODO | TODO | TODO | ok | TODO | TODO | ok | TODO |
+ mips | ok | TODO | TODO | TODO | ok | TODO | ok | ok | ok |
+ mn10300 | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ nios2 | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ openrisc | TODO | TODO | TODO | TODO | TODO | TODO | TODO | ok | TODO |
+ parisc | ok | TODO | TODO | TODO | TODO | TODO | TODO | TODO | ok |
+ powerpc | ok | TODO | TODO | TODO | ok | ok | TODO | ok | ok |
+ s390 | ok | ok | TODO | TODO | ok | ok | TODO | ok | ok |
+ score | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ sh | TODO | TODO | TODO | TODO | ok | ok | TODO | ok | ok |
+ sparc | ok | TODO | TODO | TODO | ok | TODO | TODO | ok | ok |
+ tile | ok | TODO | TODO | TODO | ok | ok | TODO | ok | TODO |
+ um | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ unicore32 | TODO | TODO | TODO | TODO | TODO | TODO | TODO | ok | TODO |
+ x86 | ok | ok | ok | ok | ok | ok | ok | ok | ok |
+ xtensa | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | ok |
+----------------------------------------------------------------------------------
+
+
+ irq time acct: HAVE_IRQ_TIME_ACCOUNTING
+ THP: HAVE_ARCH_TRANSPARENT_HUGEPAGE && 64BIT
+ gcov profile all: ARCH_HAS_GCOV_PROFILE_ALL
+ rwsem optimized: Optimized asm/rwsem.h
+ queued spinlocks: ARCH_USE_QUEUED_SPINLOCKS
+ queued rwlocks: ARCH_USE_QUEUED_RWLOCKS
+ numa balancing: ARCH_SUPPORTS_NUMA_BALANCING && 64BIT && NUMA
+
+ irq time acct:-------------------------------------------.
+ THP:------------------------------------. |
+ gcov profile all:-----------------------------. | |
+ rwsem optimized:----------------------. | | |
+ queued spinlocks:---------------. | | | |
+ queued rwlocks:--------. | | | | |
+ numa balancing:-. | | | | | |
+ | | | | | | |
+--------------------------------------------------------------------
+ alpha | TODO | TODO | TODO | ok | TODO | TODO | TODO |
+ arc | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ arm | .. | TODO | TODO | TODO | ok | ok | ok |
+ arm64 | .. | TODO | TODO | TODO | ok | ok | TODO |
+ avr32 | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ blackfin | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ c6x | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ cris | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ frv | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ hexagon | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ ia64 | TODO | TODO | TODO | ok | TODO | TODO | TODO |
+ m32r | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ m68k | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ metag | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ microblaze | .. | TODO | TODO | TODO | ok | .. | TODO |
+ mips | TODO | TODO | TODO | TODO | TODO | ok | ok |
+ mn10300 | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ nios2 | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ openrisc | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ parisc | .. | TODO | TODO | TODO | TODO | TODO | TODO |
+ powerpc | ok | TODO | TODO | TODO | ok | ok | TODO |
+ s390 | .. | TODO | TODO | ok | ok | ok | TODO |
+ score | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ sh | .. | TODO | TODO | ok | ok | .. | TODO |
+ sparc | TODO | TODO | TODO | ok | TODO | ok | TODO |
+ tile | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ um | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ unicore32 | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ x86 | ok | ok | ok | ok | ok | ok | ok |
+ xtensa | .. | TODO | TODO | ok | TODO | .. | ok |
+--------------------------------------------------------------------
WARNING: multiple messages have this Message-ID (diff)
From: Ingo Molnar <mingo-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
To: Borislav Petkov <bp-Gina5bIWoIWzQB+pC5nmwQ@public.gmane.org>
Cc: Andrew Morton
<akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>,
Jonathan Corbet <corbet-T1hC0tSOHrs@public.gmane.org>,
Peter Zijlstra <peterz-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>,
Josh Triplett <josh-iaAMLnmF4UmaiuxdJuQwMA@public.gmane.org>,
Andy Lutomirski <luto-kltTT9wpgjJwATOyAt5JVQ@public.gmane.org>,
Ingo Molnar <mingo-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
"H. Peter Anvin" <hpa-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>,
Thomas Gleixner <tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>,
Linus Torvalds
<torvalds-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>,
linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
x86-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
linux-arch-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: [RFC PATCH v6] Documentation/arch: Add Documentation/arch-features.txt
Date: Wed, 13 May 2015 15:48:42 +0200 [thread overview]
Message-ID: <20150513134842.GA1657@gmail.com> (raw)
In-Reply-To: <20150513131835.GJ1517-fF5Pk5pvG8Y@public.gmane.org>
* Borislav Petkov <bp-Gina5bIWoIWzQB+pC5nmwQ@public.gmane.org> wrote:
> On Wed, May 13, 2015 at 11:47:56AM +0200, Ingo Molnar wrote:
> > - introduce the '..' denotion (in the final table) to show features
> > that cannot be supported by an architecture due to hardware
> > dependencies:
> >
> > gcov-profile-all:---------------.
> > THP:--------. |
> > irq-time-acct:-. | |
> > | | |
> > ----------------------------------------
> > alpha | TODO | TODO | TODO |
> > arc | TODO | .. | TODO |
> > arm | ok | ok | ok |
> > arm64 | TODO | ok | ok |
> > avr32 | TODO | .. | TODO |
> > blackfin | TODO | .. | TODO |
> > c6x | TODO | .. | TODO |
> >
> > so in the 'THP' column, if an architecture could in theory support
> > THP, it's listed as 'TODO', if it cannot, it's listed as '..'.
>
> Shouldn't exactly that explanation be in the text file itself too?
Yeah, indeed, added it.
> Also, how about s/TODO//g for less clutter:
No, I'd like there to be a very visible 'TODO' item for missing
features.
The 'clutter' shows how badly our generic kernel features are
propagating :-/ We hope to reduce this clutter in the future.
Updated patch attached - I've added a few more features to the last
table, and restructured the explanations, now every feature
description also lists the Kconfig variable that it's tracking, e.g.:
irq time acct: HAVE_IRQ_TIME_ACCOUNTING
THP: HAVE_ARCH_TRANSPARENT_HUGEPAGE && 64BIT
gcov profile all: ARCH_HAS_GCOV_PROFILE_ALL
rwsem optimized: Optimized asm/rwsem.h
queued spinlocks: ARCH_USE_QUEUED_SPINLOCKS
queued rwlocks: ARCH_USE_QUEUED_RWLOCKS
numa balancing: ARCH_SUPPORTS_NUMA_BALANCING && 64BIT && NUMA
Thanks,
Ingo
=========================================>
From 93f6bd67b4348bf4bf27cbac8ffa9f1def4fa6aa Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Date: Wed, 13 May 2015 10:30:11 +0200
Subject: [PATCH] Documentation/arch: Add Documentation/arch-features.txt
Add a support matrix for various generic kernel features that need
architecture support.
Signed-off-by: Ingo Molnar <mingo-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
---
Documentation/arch-features.txt | 222 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 222 insertions(+)
diff --git a/Documentation/arch-features.txt b/Documentation/arch-features.txt
new file mode 100644
index 000000000000..4f6430bc552b
--- /dev/null
+++ b/Documentation/arch-features.txt
@@ -0,0 +1,222 @@
+
+For generic kernel features that need architecture support, this is
+the feature support matrix, for all upstream Linux architectures.
+
+Meaning of entries in the tables:
+
+ ' ok ': feature supported by the architecture
+ 'TODO': feature not yet supported by the architecture
+ ' .. ': feature cannot be supported by the hardware
+
+
+
+ lockdep: LOCKDEP_SUPPORT
+ stackprotector: HAVE_CC_STACKPROTECTOR
+ jump labels: HAVE_ARCH_JUMP_LABEL
+ seccomp filter: HAVE_ARCH_SECCOMP_FILTER
+ context tracking: HAVE_CONTEXT_TRACKING
+ kgdb: HAVE_ARCH_KGDB
+ modern timekeeping: !ARCH_USES_GETTIMEOFFSET
+ clockevents: GENERIC_CLOCKEVENTS
+ ELF ASLR: ARCH_HAS_ELF_RANDOMIZE
+
+ lockdep:---------------------------------------------------------.
+ stackprotector:--------------------------------------------------. |
+ jump labels:-------------------------------------------. | |
+ seccomp filter:------------------------------------. | | |
+ context tracking:-----------------------------. | | | |
+ kgdb:----------------------. | | | | |
+ modern timekeeping:---------------. | | | | | |
+ clockevents:--------. | | | | | | |
+ ELF ASLR:-. | | | | | | | |
+ | | | | | | | | |
+----------------------------------------------------------------------------------
+ alpha | TODO | ok | ok | TODO | TODO | TODO | TODO | TODO | TODO |
+ arc | TODO | ok | ok | ok | TODO | TODO | TODO | TODO | ok |
+ arm | ok | ok | TODO | ok | ok | ok | ok | ok | ok |
+ arm64 | ok | ok | ok | ok | ok | ok | ok | ok | ok |
+ avr32 | TODO | ok | ok | TODO | TODO | TODO | TODO | TODO | ok |
+ blackfin | TODO | ok | TODO | ok | TODO | TODO | TODO | TODO | ok |
+ c6x | TODO | ok | ok | TODO | TODO | TODO | TODO | TODO | TODO |
+ cris | TODO | ok | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ frv | TODO | TODO | ok | TODO | TODO | TODO | TODO | TODO | TODO |
+ hexagon | TODO | ok | ok | ok | TODO | TODO | TODO | TODO | ok |
+ ia64 | TODO | TODO | ok | TODO | TODO | TODO | TODO | TODO | TODO |
+ m32r | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ m68k | TODO | ok | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ metag | TODO | ok | ok | TODO | TODO | TODO | TODO | TODO | ok |
+ microblaze | TODO | ok | ok | ok | TODO | TODO | TODO | TODO | ok |
+ mips | ok | ok | ok | ok | ok | ok | ok | ok | ok |
+ mn10300 | TODO | ok | ok | ok | TODO | TODO | TODO | TODO | TODO |
+ nios2 | TODO | ok | ok | ok | TODO | TODO | TODO | TODO | TODO |
+ openrisc | TODO | ok | ok | TODO | TODO | TODO | TODO | TODO | TODO |
+ parisc | TODO | TODO | ok | TODO | TODO | TODO | TODO | TODO | TODO |
+ powerpc | ok | ok | ok | ok | ok | TODO | ok | TODO | ok |
+ s390 | ok | ok | ok | TODO | TODO | ok | ok | TODO | ok |
+ score | TODO | ok | ok | TODO | TODO | TODO | TODO | TODO | ok |
+ sh | TODO | ok | ok | ok | TODO | TODO | TODO | ok | ok |
+ sparc | TODO | ok | ok | ok | ok | TODO | ok | TODO | ok |
+ tile | TODO | ok | ok | ok | ok | TODO | TODO | TODO | ok |
+ um | TODO | ok | ok | TODO | TODO | TODO | TODO | TODO | ok |
+ unicore32 | TODO | ok | ok | TODO | TODO | TODO | TODO | TODO | ok |
+ x86 | ok | ok | ok | ok | ok | ok | ok | ok | ok |
+ xtensa | TODO | ok | ok | TODO | TODO | TODO | TODO | TODO | ok |
+----------------------------------------------------------------------------------
+
+
+arch tick broadcast: ARCH_HAS_TICK_BROADCAST
+ kprobes: HAVE_KPROBES
+ optprobes: HAVE_OPTPROBES
+ kprobes on ftrace: HAVE_KPROBES_ON_FTRACE
+ uprobes: ARCH_SUPPORTS_UPROBES
+ kretprobes: HAVE_KRETPROBES
+ user ret profiler: HAVE_USER_RETURN_NOTIFIER
+ ioremap_prot(): HAVE_IOREMAP_PROT
+ tracehook: HAVE_ARCH_TRACEHOOK
+
+arch tick broadcast:---------------------------------------------------------.
+ kprobes:--------------------------------------------------. |
+ optprobes:-------------------------------------------. | |
+ kprobes on ftrace:------------------------------------. | | |
+ uprobes:-----------------------------. | | | |
+ kretprobes:----------------------. | | | | |
+ user ret profiler:---------------. | | | | | |
+ ioremap_prot():--------. | | | | | | |
+ tracehook:-. | | | | | | | |
+ | | | | | | | | |
+----------------------------------------------------------------------------------
+ alpha | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ arc | ok | ok | TODO | ok | TODO | TODO | TODO | ok | TODO |
+ arm | ok | TODO | TODO | ok | ok | TODO | ok | ok | ok |
+ arm64 | ok | TODO | TODO | TODO | TODO | TODO | TODO | TODO | ok |
+ avr32 | TODO | TODO | TODO | TODO | TODO | TODO | TODO | ok | TODO |
+ blackfin | ok | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ c6x | ok | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ cris | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ frv | ok | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ hexagon | ok | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ ia64 | ok | TODO | TODO | ok | TODO | TODO | TODO | ok | TODO |
+ m32r | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ m68k | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ metag | ok | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ microblaze | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ mips | ok | TODO | TODO | ok | TODO | TODO | TODO | ok | ok |
+ mn10300 | ok | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ nios2 | ok | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ openrisc | ok | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ parisc | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ powerpc | ok | ok | TODO | ok | ok | TODO | TODO | ok | ok |
+ s390 | ok | TODO | TODO | ok | ok | TODO | TODO | ok | TODO |
+ score | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ sh | ok | ok | TODO | ok | TODO | TODO | TODO | ok | TODO |
+ sparc | ok | TODO | TODO | ok | TODO | TODO | TODO | ok | TODO |
+ tile | ok | ok | ok | ok | TODO | TODO | ok | ok | TODO |
+ um | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ unicore32 | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ x86 | ok | ok | ok | ok | ok | ok | ok | ok | TODO |
+ xtensa | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+----------------------------------------------------------------------------------
+
+
+generic idle thread: GENERIC_SMP_IDLE_THREAD
+ dma_*map*_attrs(): HAVE_DMA_ATTRS
+ dma contiguous: HAVE_DMA_CONTIGUOUS
+ kprobes event: HAVE_REGS_AND_STACK_ACCESS_API
+ dma api debug: HAVE_DMA_API_DEBUG
+ perf regs: HAVE_PERF_REGS
+ perf stackdump: HAVE_PERF_USER_STACK_DUMP
+ cmpxchg local: HAVE_CMPXCHG_LOCAL
+ virt cpuacct: HAVE_VIRT_CPU_ACCOUNTING || 64BIT
+
+generic idle thread:---------------------------------------------------------.
+ dma_*map*_attrs():--------------------------------------------------. |
+ dma contiguous:-------------------------------------------. | |
+ kprobes event:------------------------------------. | | |
+ dma api debug:-----------------------------. | | | |
+ perf regs:----------------------. | | | | |
+ perf stackdump:---------------. | | | | | |
+ cmpxchg local:--------. | | | | | | |
+ virt cpuacct:-. | | | | | | | |
+ | | | | | | | | |
+----------------------------------------------------------------------------------
+ alpha | ok | TODO | TODO | TODO | TODO | TODO | TODO | ok | ok |
+ arc | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | ok |
+ arm | ok | TODO | ok | ok | ok | ok | ok | ok | ok |
+ arm64 | ok | TODO | ok | ok | ok | TODO | ok | ok | ok |
+ avr32 | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ blackfin | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | ok |
+ c6x | TODO | TODO | TODO | TODO | ok | TODO | TODO | TODO | TODO |
+ cris | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ frv | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ hexagon | TODO | TODO | TODO | TODO | TODO | ok | TODO | ok | ok |
+ ia64 | ok | TODO | TODO | TODO | ok | TODO | TODO | ok | ok |
+ m32r | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ m68k | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ metag | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | ok |
+ microblaze | TODO | TODO | TODO | TODO | ok | TODO | TODO | ok | TODO |
+ mips | ok | TODO | TODO | TODO | ok | TODO | ok | ok | ok |
+ mn10300 | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ nios2 | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ openrisc | TODO | TODO | TODO | TODO | TODO | TODO | TODO | ok | TODO |
+ parisc | ok | TODO | TODO | TODO | TODO | TODO | TODO | TODO | ok |
+ powerpc | ok | TODO | TODO | TODO | ok | ok | TODO | ok | ok |
+ s390 | ok | ok | TODO | TODO | ok | ok | TODO | ok | ok |
+ score | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ sh | TODO | TODO | TODO | TODO | ok | ok | TODO | ok | ok |
+ sparc | ok | TODO | TODO | TODO | ok | TODO | TODO | ok | ok |
+ tile | ok | TODO | TODO | TODO | ok | ok | TODO | ok | TODO |
+ um | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ unicore32 | TODO | TODO | TODO | TODO | TODO | TODO | TODO | ok | TODO |
+ x86 | ok | ok | ok | ok | ok | ok | ok | ok | ok |
+ xtensa | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | ok |
+----------------------------------------------------------------------------------
+
+
+ irq time acct: HAVE_IRQ_TIME_ACCOUNTING
+ THP: HAVE_ARCH_TRANSPARENT_HUGEPAGE && 64BIT
+ gcov profile all: ARCH_HAS_GCOV_PROFILE_ALL
+ rwsem optimized: Optimized asm/rwsem.h
+ queued spinlocks: ARCH_USE_QUEUED_SPINLOCKS
+ queued rwlocks: ARCH_USE_QUEUED_RWLOCKS
+ numa balancing: ARCH_SUPPORTS_NUMA_BALANCING && 64BIT && NUMA
+
+ irq time acct:-------------------------------------------.
+ THP:------------------------------------. |
+ gcov profile all:-----------------------------. | |
+ rwsem optimized:----------------------. | | |
+ queued spinlocks:---------------. | | | |
+ queued rwlocks:--------. | | | | |
+ numa balancing:-. | | | | | |
+ | | | | | | |
+--------------------------------------------------------------------
+ alpha | TODO | TODO | TODO | ok | TODO | TODO | TODO |
+ arc | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ arm | .. | TODO | TODO | TODO | ok | ok | ok |
+ arm64 | .. | TODO | TODO | TODO | ok | ok | TODO |
+ avr32 | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ blackfin | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ c6x | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ cris | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ frv | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ hexagon | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ ia64 | TODO | TODO | TODO | ok | TODO | TODO | TODO |
+ m32r | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ m68k | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ metag | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ microblaze | .. | TODO | TODO | TODO | ok | .. | TODO |
+ mips | TODO | TODO | TODO | TODO | TODO | ok | ok |
+ mn10300 | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ nios2 | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ openrisc | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ parisc | .. | TODO | TODO | TODO | TODO | TODO | TODO |
+ powerpc | ok | TODO | TODO | TODO | ok | ok | TODO |
+ s390 | .. | TODO | TODO | ok | ok | ok | TODO |
+ score | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ sh | .. | TODO | TODO | ok | ok | .. | TODO |
+ sparc | TODO | TODO | TODO | ok | TODO | ok | TODO |
+ tile | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ um | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ unicore32 | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ x86 | ok | ok | ok | ok | ok | ok | ok |
+ xtensa | .. | TODO | TODO | ok | TODO | .. | ok |
+--------------------------------------------------------------------
WARNING: multiple messages have this Message-ID (diff)
From: Ingo Molnar <mingo@kernel.org>
To: Borislav Petkov <bp@alien8.de>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Jonathan Corbet <corbet@lwn.net>,
Peter Zijlstra <peterz@infradead.org>,
Josh Triplett <josh@joshtriplett.org>,
Andy Lutomirski <luto@amacapital.net>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>,
Linus Torvalds <torvalds@linux-foundation.org>,
linux-api@vger.kernel.org, linux-kernel@vger.kernel.org,
x86@kernel.org, linux-arch@vger.kernel.org
Subject: [RFC PATCH v6] Documentation/arch: Add Documentation/arch-features.txt
Date: Wed, 13 May 2015 15:48:42 +0200 [thread overview]
Message-ID: <20150513134842.GA1657@gmail.com> (raw)
Message-ID: <20150513134842.YTveZJpwSSyigfA9mB3Up2eHN41-tn21Eu_uJI-Sn1Q@z> (raw)
In-Reply-To: <20150513131835.GJ1517@pd.tnic>
* Borislav Petkov <bp@alien8.de> wrote:
> On Wed, May 13, 2015 at 11:47:56AM +0200, Ingo Molnar wrote:
> > - introduce the '..' denotion (in the final table) to show features
> > that cannot be supported by an architecture due to hardware
> > dependencies:
> >
> > gcov-profile-all:---------------.
> > THP:--------. |
> > irq-time-acct:-. | |
> > | | |
> > ----------------------------------------
> > alpha | TODO | TODO | TODO |
> > arc | TODO | .. | TODO |
> > arm | ok | ok | ok |
> > arm64 | TODO | ok | ok |
> > avr32 | TODO | .. | TODO |
> > blackfin | TODO | .. | TODO |
> > c6x | TODO | .. | TODO |
> >
> > so in the 'THP' column, if an architecture could in theory support
> > THP, it's listed as 'TODO', if it cannot, it's listed as '..'.
>
> Shouldn't exactly that explanation be in the text file itself too?
Yeah, indeed, added it.
> Also, how about s/TODO//g for less clutter:
No, I'd like there to be a very visible 'TODO' item for missing
features.
The 'clutter' shows how badly our generic kernel features are
propagating :-/ We hope to reduce this clutter in the future.
Updated patch attached - I've added a few more features to the last
table, and restructured the explanations, now every feature
description also lists the Kconfig variable that it's tracking, e.g.:
irq time acct: HAVE_IRQ_TIME_ACCOUNTING
THP: HAVE_ARCH_TRANSPARENT_HUGEPAGE && 64BIT
gcov profile all: ARCH_HAS_GCOV_PROFILE_ALL
rwsem optimized: Optimized asm/rwsem.h
queued spinlocks: ARCH_USE_QUEUED_SPINLOCKS
queued rwlocks: ARCH_USE_QUEUED_RWLOCKS
numa balancing: ARCH_SUPPORTS_NUMA_BALANCING && 64BIT && NUMA
Thanks,
Ingo
=========================================>
WARNING: multiple messages have this Message-ID (diff)
From: Ingo Molnar <mingo@kernel.org>
To: Borislav Petkov <bp@alien8.de>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Jonathan Corbet <corbet@lwn.net>,
Peter Zijlstra <peterz@infradead.org>,
Josh Triplett <josh@joshtriplett.org>,
Andy Lutomirski <luto@amacapital.net>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>,
Linus Torvalds <torvalds@linux-foundation.org>,
linux-api@vger.kernel.org, linux-kernel@vger.kernel.org,
x86@kernel.org, linux-arch@vger.kernel.org
Subject: [RFC PATCH v6] Documentation/arch: Add Documentation/arch-features.txt
Date: Wed, 13 May 2015 15:48:42 +0200 [thread overview]
Message-ID: <20150513134842.GA1657@gmail.com> (raw)
In-Reply-To: <20150513131835.GJ1517@pd.tnic>
* Borislav Petkov <bp@alien8.de> wrote:
> On Wed, May 13, 2015 at 11:47:56AM +0200, Ingo Molnar wrote:
> > - introduce the '..' denotion (in the final table) to show features
> > that cannot be supported by an architecture due to hardware
> > dependencies:
> >
> > gcov-profile-all:---------------.
> > THP:--------. |
> > irq-time-acct:-. | |
> > | | |
> > ----------------------------------------
> > alpha | TODO | TODO | TODO |
> > arc | TODO | .. | TODO |
> > arm | ok | ok | ok |
> > arm64 | TODO | ok | ok |
> > avr32 | TODO | .. | TODO |
> > blackfin | TODO | .. | TODO |
> > c6x | TODO | .. | TODO |
> >
> > so in the 'THP' column, if an architecture could in theory support
> > THP, it's listed as 'TODO', if it cannot, it's listed as '..'.
>
> Shouldn't exactly that explanation be in the text file itself too?
Yeah, indeed, added it.
> Also, how about s/TODO//g for less clutter:
No, I'd like there to be a very visible 'TODO' item for missing
features.
The 'clutter' shows how badly our generic kernel features are
propagating :-/ We hope to reduce this clutter in the future.
Updated patch attached - I've added a few more features to the last
table, and restructured the explanations, now every feature
description also lists the Kconfig variable that it's tracking, e.g.:
irq time acct: HAVE_IRQ_TIME_ACCOUNTING
THP: HAVE_ARCH_TRANSPARENT_HUGEPAGE && 64BIT
gcov profile all: ARCH_HAS_GCOV_PROFILE_ALL
rwsem optimized: Optimized asm/rwsem.h
queued spinlocks: ARCH_USE_QUEUED_SPINLOCKS
queued rwlocks: ARCH_USE_QUEUED_RWLOCKS
numa balancing: ARCH_SUPPORTS_NUMA_BALANCING && 64BIT && NUMA
Thanks,
Ingo
=========================================>
>From 93f6bd67b4348bf4bf27cbac8ffa9f1def4fa6aa Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@kernel.org>
Date: Wed, 13 May 2015 10:30:11 +0200
Subject: [PATCH] Documentation/arch: Add Documentation/arch-features.txt
Add a support matrix for various generic kernel features that need
architecture support.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
Documentation/arch-features.txt | 222 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 222 insertions(+)
diff --git a/Documentation/arch-features.txt b/Documentation/arch-features.txt
new file mode 100644
index 000000000000..4f6430bc552b
--- /dev/null
+++ b/Documentation/arch-features.txt
@@ -0,0 +1,222 @@
+
+For generic kernel features that need architecture support, this is
+the feature support matrix, for all upstream Linux architectures.
+
+Meaning of entries in the tables:
+
+ ' ok ': feature supported by the architecture
+ 'TODO': feature not yet supported by the architecture
+ ' .. ': feature cannot be supported by the hardware
+
+
+
+ lockdep: LOCKDEP_SUPPORT
+ stackprotector: HAVE_CC_STACKPROTECTOR
+ jump labels: HAVE_ARCH_JUMP_LABEL
+ seccomp filter: HAVE_ARCH_SECCOMP_FILTER
+ context tracking: HAVE_CONTEXT_TRACKING
+ kgdb: HAVE_ARCH_KGDB
+ modern timekeeping: !ARCH_USES_GETTIMEOFFSET
+ clockevents: GENERIC_CLOCKEVENTS
+ ELF ASLR: ARCH_HAS_ELF_RANDOMIZE
+
+ lockdep:---------------------------------------------------------.
+ stackprotector:--------------------------------------------------. |
+ jump labels:-------------------------------------------. | |
+ seccomp filter:------------------------------------. | | |
+ context tracking:-----------------------------. | | | |
+ kgdb:----------------------. | | | | |
+ modern timekeeping:---------------. | | | | | |
+ clockevents:--------. | | | | | | |
+ ELF ASLR:-. | | | | | | | |
+ | | | | | | | | |
+----------------------------------------------------------------------------------
+ alpha | TODO | ok | ok | TODO | TODO | TODO | TODO | TODO | TODO |
+ arc | TODO | ok | ok | ok | TODO | TODO | TODO | TODO | ok |
+ arm | ok | ok | TODO | ok | ok | ok | ok | ok | ok |
+ arm64 | ok | ok | ok | ok | ok | ok | ok | ok | ok |
+ avr32 | TODO | ok | ok | TODO | TODO | TODO | TODO | TODO | ok |
+ blackfin | TODO | ok | TODO | ok | TODO | TODO | TODO | TODO | ok |
+ c6x | TODO | ok | ok | TODO | TODO | TODO | TODO | TODO | TODO |
+ cris | TODO | ok | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ frv | TODO | TODO | ok | TODO | TODO | TODO | TODO | TODO | TODO |
+ hexagon | TODO | ok | ok | ok | TODO | TODO | TODO | TODO | ok |
+ ia64 | TODO | TODO | ok | TODO | TODO | TODO | TODO | TODO | TODO |
+ m32r | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ m68k | TODO | ok | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ metag | TODO | ok | ok | TODO | TODO | TODO | TODO | TODO | ok |
+ microblaze | TODO | ok | ok | ok | TODO | TODO | TODO | TODO | ok |
+ mips | ok | ok | ok | ok | ok | ok | ok | ok | ok |
+ mn10300 | TODO | ok | ok | ok | TODO | TODO | TODO | TODO | TODO |
+ nios2 | TODO | ok | ok | ok | TODO | TODO | TODO | TODO | TODO |
+ openrisc | TODO | ok | ok | TODO | TODO | TODO | TODO | TODO | TODO |
+ parisc | TODO | TODO | ok | TODO | TODO | TODO | TODO | TODO | TODO |
+ powerpc | ok | ok | ok | ok | ok | TODO | ok | TODO | ok |
+ s390 | ok | ok | ok | TODO | TODO | ok | ok | TODO | ok |
+ score | TODO | ok | ok | TODO | TODO | TODO | TODO | TODO | ok |
+ sh | TODO | ok | ok | ok | TODO | TODO | TODO | ok | ok |
+ sparc | TODO | ok | ok | ok | ok | TODO | ok | TODO | ok |
+ tile | TODO | ok | ok | ok | ok | TODO | TODO | TODO | ok |
+ um | TODO | ok | ok | TODO | TODO | TODO | TODO | TODO | ok |
+ unicore32 | TODO | ok | ok | TODO | TODO | TODO | TODO | TODO | ok |
+ x86 | ok | ok | ok | ok | ok | ok | ok | ok | ok |
+ xtensa | TODO | ok | ok | TODO | TODO | TODO | TODO | TODO | ok |
+----------------------------------------------------------------------------------
+
+
+arch tick broadcast: ARCH_HAS_TICK_BROADCAST
+ kprobes: HAVE_KPROBES
+ optprobes: HAVE_OPTPROBES
+ kprobes on ftrace: HAVE_KPROBES_ON_FTRACE
+ uprobes: ARCH_SUPPORTS_UPROBES
+ kretprobes: HAVE_KRETPROBES
+ user ret profiler: HAVE_USER_RETURN_NOTIFIER
+ ioremap_prot(): HAVE_IOREMAP_PROT
+ tracehook: HAVE_ARCH_TRACEHOOK
+
+arch tick broadcast:---------------------------------------------------------.
+ kprobes:--------------------------------------------------. |
+ optprobes:-------------------------------------------. | |
+ kprobes on ftrace:------------------------------------. | | |
+ uprobes:-----------------------------. | | | |
+ kretprobes:----------------------. | | | | |
+ user ret profiler:---------------. | | | | | |
+ ioremap_prot():--------. | | | | | | |
+ tracehook:-. | | | | | | | |
+ | | | | | | | | |
+----------------------------------------------------------------------------------
+ alpha | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ arc | ok | ok | TODO | ok | TODO | TODO | TODO | ok | TODO |
+ arm | ok | TODO | TODO | ok | ok | TODO | ok | ok | ok |
+ arm64 | ok | TODO | TODO | TODO | TODO | TODO | TODO | TODO | ok |
+ avr32 | TODO | TODO | TODO | TODO | TODO | TODO | TODO | ok | TODO |
+ blackfin | ok | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ c6x | ok | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ cris | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ frv | ok | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ hexagon | ok | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ ia64 | ok | TODO | TODO | ok | TODO | TODO | TODO | ok | TODO |
+ m32r | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ m68k | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ metag | ok | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ microblaze | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ mips | ok | TODO | TODO | ok | TODO | TODO | TODO | ok | ok |
+ mn10300 | ok | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ nios2 | ok | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ openrisc | ok | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ parisc | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ powerpc | ok | ok | TODO | ok | ok | TODO | TODO | ok | ok |
+ s390 | ok | TODO | TODO | ok | ok | TODO | TODO | ok | TODO |
+ score | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ sh | ok | ok | TODO | ok | TODO | TODO | TODO | ok | TODO |
+ sparc | ok | TODO | TODO | ok | TODO | TODO | TODO | ok | TODO |
+ tile | ok | ok | ok | ok | TODO | TODO | ok | ok | TODO |
+ um | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ unicore32 | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ x86 | ok | ok | ok | ok | ok | ok | ok | ok | TODO |
+ xtensa | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+----------------------------------------------------------------------------------
+
+
+generic idle thread: GENERIC_SMP_IDLE_THREAD
+ dma_*map*_attrs(): HAVE_DMA_ATTRS
+ dma contiguous: HAVE_DMA_CONTIGUOUS
+ kprobes event: HAVE_REGS_AND_STACK_ACCESS_API
+ dma api debug: HAVE_DMA_API_DEBUG
+ perf regs: HAVE_PERF_REGS
+ perf stackdump: HAVE_PERF_USER_STACK_DUMP
+ cmpxchg local: HAVE_CMPXCHG_LOCAL
+ virt cpuacct: HAVE_VIRT_CPU_ACCOUNTING || 64BIT
+
+generic idle thread:---------------------------------------------------------.
+ dma_*map*_attrs():--------------------------------------------------. |
+ dma contiguous:-------------------------------------------. | |
+ kprobes event:------------------------------------. | | |
+ dma api debug:-----------------------------. | | | |
+ perf regs:----------------------. | | | | |
+ perf stackdump:---------------. | | | | | |
+ cmpxchg local:--------. | | | | | | |
+ virt cpuacct:-. | | | | | | | |
+ | | | | | | | | |
+----------------------------------------------------------------------------------
+ alpha | ok | TODO | TODO | TODO | TODO | TODO | TODO | ok | ok |
+ arc | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | ok |
+ arm | ok | TODO | ok | ok | ok | ok | ok | ok | ok |
+ arm64 | ok | TODO | ok | ok | ok | TODO | ok | ok | ok |
+ avr32 | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ blackfin | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | ok |
+ c6x | TODO | TODO | TODO | TODO | ok | TODO | TODO | TODO | TODO |
+ cris | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ frv | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ hexagon | TODO | TODO | TODO | TODO | TODO | ok | TODO | ok | ok |
+ ia64 | ok | TODO | TODO | TODO | ok | TODO | TODO | ok | ok |
+ m32r | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ m68k | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ metag | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | ok |
+ microblaze | TODO | TODO | TODO | TODO | ok | TODO | TODO | ok | TODO |
+ mips | ok | TODO | TODO | TODO | ok | TODO | ok | ok | ok |
+ mn10300 | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ nios2 | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ openrisc | TODO | TODO | TODO | TODO | TODO | TODO | TODO | ok | TODO |
+ parisc | ok | TODO | TODO | TODO | TODO | TODO | TODO | TODO | ok |
+ powerpc | ok | TODO | TODO | TODO | ok | ok | TODO | ok | ok |
+ s390 | ok | ok | TODO | TODO | ok | ok | TODO | ok | ok |
+ score | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ sh | TODO | TODO | TODO | TODO | ok | ok | TODO | ok | ok |
+ sparc | ok | TODO | TODO | TODO | ok | TODO | TODO | ok | ok |
+ tile | ok | TODO | TODO | TODO | ok | ok | TODO | ok | TODO |
+ um | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ unicore32 | TODO | TODO | TODO | TODO | TODO | TODO | TODO | ok | TODO |
+ x86 | ok | ok | ok | ok | ok | ok | ok | ok | ok |
+ xtensa | TODO | TODO | TODO | TODO | TODO | TODO | TODO | TODO | ok |
+----------------------------------------------------------------------------------
+
+
+ irq time acct: HAVE_IRQ_TIME_ACCOUNTING
+ THP: HAVE_ARCH_TRANSPARENT_HUGEPAGE && 64BIT
+ gcov profile all: ARCH_HAS_GCOV_PROFILE_ALL
+ rwsem optimized: Optimized asm/rwsem.h
+ queued spinlocks: ARCH_USE_QUEUED_SPINLOCKS
+ queued rwlocks: ARCH_USE_QUEUED_RWLOCKS
+ numa balancing: ARCH_SUPPORTS_NUMA_BALANCING && 64BIT && NUMA
+
+ irq time acct:-------------------------------------------.
+ THP:------------------------------------. |
+ gcov profile all:-----------------------------. | |
+ rwsem optimized:----------------------. | | |
+ queued spinlocks:---------------. | | | |
+ queued rwlocks:--------. | | | | |
+ numa balancing:-. | | | | | |
+ | | | | | | |
+--------------------------------------------------------------------
+ alpha | TODO | TODO | TODO | ok | TODO | TODO | TODO |
+ arc | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ arm | .. | TODO | TODO | TODO | ok | ok | ok |
+ arm64 | .. | TODO | TODO | TODO | ok | ok | TODO |
+ avr32 | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ blackfin | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ c6x | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ cris | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ frv | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ hexagon | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ ia64 | TODO | TODO | TODO | ok | TODO | TODO | TODO |
+ m32r | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ m68k | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ metag | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ microblaze | .. | TODO | TODO | TODO | ok | .. | TODO |
+ mips | TODO | TODO | TODO | TODO | TODO | ok | ok |
+ mn10300 | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ nios2 | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ openrisc | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ parisc | .. | TODO | TODO | TODO | TODO | TODO | TODO |
+ powerpc | ok | TODO | TODO | TODO | ok | ok | TODO |
+ s390 | .. | TODO | TODO | ok | ok | ok | TODO |
+ score | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ sh | .. | TODO | TODO | ok | ok | .. | TODO |
+ sparc | TODO | TODO | TODO | ok | TODO | ok | TODO |
+ tile | TODO | TODO | TODO | TODO | TODO | TODO | TODO |
+ um | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ unicore32 | .. | TODO | TODO | TODO | TODO | .. | TODO |
+ x86 | ok | ok | ok | ok | ok | ok | ok |
+ xtensa | .. | TODO | TODO | ok | TODO | .. | ok |
+--------------------------------------------------------------------
next prev parent reply other threads:[~2015-05-13 13:48 UTC|newest]
Thread overview: 87+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-11 19:29 [PATCHv2 1/2] clone: Support passing tls argument via C rather than pt_regs magic Josh Triplett
2015-05-11 19:29 ` Josh Triplett
2015-05-12 21:22 ` Andrew Morton
2015-05-12 21:38 ` Peter Zijlstra
[not found] ` <20150512213843.GV21418-ndre7Fmf5hadTX5a5knrm8zTDFooKrT+cvkQGrU6aU0@public.gmane.org>
2015-05-12 21:49 ` Andrew Morton
2015-05-12 21:49 ` Andrew Morton
[not found] ` <20150512144910.0b49c9a7a13336773449db33-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
2015-05-13 8:34 ` [RFC PATCH] Documentation/arch: Add Documentation/arch-TODO Ingo Molnar
2015-05-13 8:34 ` Ingo Molnar
2015-05-13 8:34 ` Ingo Molnar
2015-05-13 8:34 ` Ingo Molnar
2015-05-13 8:56 ` [RFC PATCH v2] " Ingo Molnar
2015-05-13 8:56 ` Ingo Molnar
2015-05-13 8:56 ` Ingo Molnar
[not found] ` <20150513085636.GA11030-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-05-13 9:24 ` [RFC PATCH v3] " Ingo Molnar
2015-05-13 9:24 ` Ingo Molnar
2015-05-13 9:24 ` Ingo Molnar
2015-05-13 9:24 ` Ingo Molnar
2015-05-13 9:46 ` Ingo Molnar
2015-05-13 9:46 ` Ingo Molnar
2015-05-13 9:46 ` Ingo Molnar
[not found] ` <20150513094622.GC11030-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-05-13 9:47 ` [RFC PATCH v5] " Ingo Molnar
2015-05-13 9:47 ` Ingo Molnar
2015-05-13 9:47 ` Ingo Molnar
2015-05-13 9:47 ` Ingo Molnar
2015-05-13 13:18 ` Borislav Petkov
[not found] ` <20150513131835.GJ1517-fF5Pk5pvG8Y@public.gmane.org>
2015-05-13 13:48 ` Ingo Molnar [this message]
2015-05-13 13:48 ` [RFC PATCH v6] Documentation/arch: Add Documentation/arch-features.txt Ingo Molnar
2015-05-13 13:48 ` Ingo Molnar
2015-05-13 13:48 ` Ingo Molnar
2015-05-13 16:27 ` Josh Triplett
2015-05-13 16:53 ` Josh Triplett
2015-05-13 16:53 ` Josh Triplett
2015-05-14 10:16 ` Ingo Molnar
[not found] ` <20150514101615.GB27550-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-05-14 10:31 ` Josh Triplett
2015-05-14 10:31 ` Josh Triplett
2015-05-13 22:05 ` Andrew Morton
2015-05-13 22:05 ` Andrew Morton
[not found] ` <20150513150523.ddd65d7cd51f820b78f0c8e3-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
2015-05-14 10:02 ` Ingo Molnar
2015-05-14 10:02 ` Ingo Molnar
2015-05-14 10:15 ` [PATCH] Documentation/arch: Add kernel feature descriptions and arch support status under Documentation/features/ Ingo Molnar
2015-05-14 10:15 ` Ingo Molnar
[not found] ` <20150514101518.GA27550-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-05-14 10:35 ` [PATCH v2] " Ingo Molnar
2015-05-14 10:35 ` Ingo Molnar
2015-05-14 19:38 ` Andrew Morton
2015-05-14 19:59 ` Ingo Molnar
[not found] ` <20150514195925.GA27570-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-05-14 22:33 ` Stephen Rothwell
2015-05-14 22:33 ` Stephen Rothwell
[not found] ` <20150515083334.535ad43e-3FnU+UHB4dNDw9hX6IcOSA@public.gmane.org>
2015-05-15 7:38 ` Ingo Molnar
2015-05-15 7:38 ` Ingo Molnar
[not found] ` <20150515073805.GA14993-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-05-15 7:51 ` Ingo Molnar
2015-05-15 7:51 ` Ingo Molnar
2015-05-15 9:37 ` Ingo Molnar
[not found] ` <20150514123835.1bf436bc35d711f8dbf9bc0f-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
2015-05-14 20:34 ` Richard Weinberger
2015-05-14 20:34 ` Richard Weinberger
2015-05-14 22:57 ` Michael Ellerman
2015-05-14 22:57 ` Michael Ellerman
[not found] ` <1431644248.2981.1.camel-Gsx/Oe8HsFggBc27wqDAHg@public.gmane.org>
2015-05-15 7:49 ` Ingo Molnar
2015-05-15 7:49 ` Ingo Molnar
2015-05-18 1:37 ` Michael Ellerman
[not found] ` <1431913033.13218.2.camel-Gsx/Oe8HsFggBc27wqDAHg@public.gmane.org>
2015-05-18 8:54 ` Ingo Molnar
2015-05-18 8:54 ` Ingo Molnar
[not found] ` <20150518085423.GA24944-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-05-19 2:02 ` Michael Ellerman
2015-05-19 2:02 ` Michael Ellerman
[not found] ` <20150514103544.GA7027-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-05-22 15:49 ` Jonathan Corbet
2015-05-22 15:49 ` Jonathan Corbet
[not found] ` <20150522094931.78a43421-T1hC0tSOHrs@public.gmane.org>
2015-05-23 8:07 ` Ingo Molnar
2015-05-23 8:07 ` Ingo Molnar
2015-05-24 18:44 ` Jonathan Corbet
[not found] ` <20150524124447.0c395540-T1hC0tSOHrs@public.gmane.org>
2015-06-03 11:03 ` [GIT PULL] Documentation/features: Add kernel feature descriptions and arch support status files " Ingo Molnar
2015-06-03 11:03 ` Ingo Molnar
[not found] ` <20150603110355.GA12079-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-06-08 23:08 ` Jonathan Corbet
2015-06-08 23:08 ` Jonathan Corbet
2015-05-14 7:08 ` [RFC PATCH v6] Documentation/arch: Add Documentation/arch-features.txt Ingo Molnar
2015-05-14 3:55 ` Paul Mackerras
2015-05-14 7:02 ` Ingo Molnar
[not found] ` <20150513094756.GD11030-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-05-13 14:09 ` [RFC PATCH v5] Documentation/arch: Add Documentation/arch-TODO Michele Curti
2015-05-13 14:09 ` Michele Curti
2015-05-13 14:42 ` Geert Uytterhoeven
[not found] ` <CAMuHMdXV68nie93Rb=Z+vYtn2aNex=s5E4+Z=QGojF+8EbPbKA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-05-14 7:21 ` H. Peter Anvin
2015-05-14 7:21 ` H. Peter Anvin
2015-05-14 7:21 ` H. Peter Anvin
[not found] ` <20150512142250.dcb053da81855ae1b5861173-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
2015-05-13 0:53 ` [PATCHv2 1/2] clone: Support passing tls argument via C rather than pt_regs magic josh-iaAMLnmF4UmaiuxdJuQwMA
2015-05-13 0:53 ` josh
2015-05-13 22:56 ` Andrew Morton
2015-05-13 22:56 ` Andrew Morton
[not found] ` <20150513155628.65dc253bea9485cb7910678b-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
2015-05-13 23:25 ` josh-iaAMLnmF4UmaiuxdJuQwMA
2015-05-13 23:25 ` josh
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