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Date:   Fri,  1 May 2020 17:37:51 +0200
From:   Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
To:     Linux Doc Mailing List <linux-doc@...r.kernel.org>
Cc:     Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        linux-kernel@...r.kernel.org, Jonathan Corbet <corbet@....net>,
        Marc Zyngier <maz@...nel.org>, Tony Luck <tony.luck@...el.com>,
        Fenghua Yu <fenghua.yu@...el.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Harry Wei <harryxiyou@...il.com>,
        Alex Shi <alex.shi@...ux.alibaba.com>,
        Tejun Heo <tj@...nel.org>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Guenter Roeck <linux@...ck-us.net>,
        Marcos Paulo de Souza <marcos.souza.org@...il.com>,
        Zenghui Yu <yuzenghui@...wei.com>,
        Daniel Jordan <daniel.m.jordan@...cle.com>,
        Mike Rapoport <rppt@...ux.ibm.com>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Rob Herring <robh@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-ia64@...r.kernel.org, netdev@...r.kernel.org
Subject: [PATCH 07/14] docs: add IRQ documentation at the core-api book

There are 4 IRQ documentation files under Documentation/*.txt.

Move them into a new directory (core-api/irq) and add a new
index file for it.

While here, use a title markup for the Debugging section of the
irq-domain.rst file.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
---
 Documentation/admin-guide/hw-vuln/l1tf.rst            |  2 +-
 Documentation/admin-guide/kernel-per-CPU-kthreads.rst |  2 +-
 Documentation/core-api/index.rst                      |  1 +
 Documentation/{IRQ.txt => core-api/irq/concepts.rst}  |  0
 Documentation/core-api/irq/index.rst                  | 11 +++++++++++
 .../irq/irq-affinity.rst}                             |  0
 .../{IRQ-domain.txt => core-api/irq/irq-domain.rst}   |  3 ++-
 .../irq/irqflags-tracing.rst}                         |  0
 Documentation/ia64/irq-redir.rst                      |  2 +-
 Documentation/networking/scaling.rst                  |  4 ++--
 Documentation/translations/zh_CN/IRQ.txt              |  4 ++--
 MAINTAINERS                                           |  2 +-
 12 files changed, 22 insertions(+), 9 deletions(-)
 rename Documentation/{IRQ.txt => core-api/irq/concepts.rst} (100%)
 create mode 100644 Documentation/core-api/irq/index.rst
 rename Documentation/{IRQ-affinity.txt => core-api/irq/irq-affinity.rst} (100%)
 rename Documentation/{IRQ-domain.txt => core-api/irq/irq-domain.rst} (99%)
 rename Documentation/{irqflags-tracing.txt => core-api/irq/irqflags-tracing.rst} (100%)

diff --git a/Documentation/admin-guide/hw-vuln/l1tf.rst b/Documentation/admin-guide/hw-vuln/l1tf.rst
index f83212fae4d5..3eeeb488d955 100644
--- a/Documentation/admin-guide/hw-vuln/l1tf.rst
+++ b/Documentation/admin-guide/hw-vuln/l1tf.rst
@@ -268,7 +268,7 @@ Guest mitigation mechanisms
    /proc/irq/$NR/smp_affinity[_list] files. Limited documentation is
    available at:
 
-   https://www.kernel.org/doc/Documentation/IRQ-affinity.txt
+   https://www.kernel.org/doc/Documentation/core-api/irq/irq-affinity.rst
 
 .. _smt_control:
 
diff --git a/Documentation/admin-guide/kernel-per-CPU-kthreads.rst b/Documentation/admin-guide/kernel-per-CPU-kthreads.rst
index 21818aca4708..dc36aeb65d0a 100644
--- a/Documentation/admin-guide/kernel-per-CPU-kthreads.rst
+++ b/Documentation/admin-guide/kernel-per-CPU-kthreads.rst
@@ -10,7 +10,7 @@ them to a "housekeeping" CPU dedicated to such work.
 References
 ==========
 
--	Documentation/IRQ-affinity.txt:  Binding interrupts to sets of CPUs.
+-	Documentation/core-api/irq/irq-affinity.rst:  Binding interrupts to sets of CPUs.
 
 -	Documentation/admin-guide/cgroup-v1:  Using cgroups to bind tasks to sets of CPUs.
 
diff --git a/Documentation/core-api/index.rst b/Documentation/core-api/index.rst
index ab056b3626f4..49a885e83a55 100644
--- a/Documentation/core-api/index.rst
+++ b/Documentation/core-api/index.rst
@@ -52,6 +52,7 @@ How Linux keeps everything from happening at the same time.  See
 
    atomic_ops
    refcount-vs-atomic
+   irq/index
    local_ops
    padata
    ../RCU/index
diff --git a/Documentation/IRQ.txt b/Documentation/core-api/irq/concepts.rst
similarity index 100%
rename from Documentation/IRQ.txt
rename to Documentation/core-api/irq/concepts.rst
diff --git a/Documentation/core-api/irq/index.rst b/Documentation/core-api/irq/index.rst
new file mode 100644
index 000000000000..0d65d11e5420
--- /dev/null
+++ b/Documentation/core-api/irq/index.rst
@@ -0,0 +1,11 @@
+====
+IRQs
+====
+
+.. toctree::
+   :maxdepth: 1
+
+   concepts
+   irq-affinity
+   irq-domain
+   irqflags-tracing
diff --git a/Documentation/IRQ-affinity.txt b/Documentation/core-api/irq/irq-affinity.rst
similarity index 100%
rename from Documentation/IRQ-affinity.txt
rename to Documentation/core-api/irq/irq-affinity.rst
diff --git a/Documentation/IRQ-domain.txt b/Documentation/core-api/irq/irq-domain.rst
similarity index 99%
rename from Documentation/IRQ-domain.txt
rename to Documentation/core-api/irq/irq-domain.rst
index 507775cce753..096db12f32d5 100644
--- a/Documentation/IRQ-domain.txt
+++ b/Documentation/core-api/irq/irq-domain.rst
@@ -263,7 +263,8 @@ needs to:
 Hierarchy irq_domain is in no way x86 specific, and is heavily used to
 support other architectures, such as ARM, ARM64 etc.
 
-=== Debugging ===
+Debugging
+=========
 
 Most of the internals of the IRQ subsystem are exposed in debugfs by
 turning CONFIG_GENERIC_IRQ_DEBUGFS on.
diff --git a/Documentation/irqflags-tracing.txt b/Documentation/core-api/irq/irqflags-tracing.rst
similarity index 100%
rename from Documentation/irqflags-tracing.txt
rename to Documentation/core-api/irq/irqflags-tracing.rst
diff --git a/Documentation/ia64/irq-redir.rst b/Documentation/ia64/irq-redir.rst
index 39bf94484a15..6bbbbe4f73ef 100644
--- a/Documentation/ia64/irq-redir.rst
+++ b/Documentation/ia64/irq-redir.rst
@@ -7,7 +7,7 @@ IRQ affinity on IA64 platforms
 
 By writing to /proc/irq/IRQ#/smp_affinity the interrupt routing can be
 controlled. The behavior on IA64 platforms is slightly different from
-that described in Documentation/IRQ-affinity.txt for i386 systems.
+that described in Documentation/core-api/irq/irq-affinity.rst for i386 systems.
 
 Because of the usage of SAPIC mode and physical destination mode the
 IRQ target is one particular CPU and cannot be a mask of several
diff --git a/Documentation/networking/scaling.rst b/Documentation/networking/scaling.rst
index f78d7bf27ff5..8f0347b9fb3d 100644
--- a/Documentation/networking/scaling.rst
+++ b/Documentation/networking/scaling.rst
@@ -81,7 +81,7 @@ of queues to IRQs can be determined from /proc/interrupts. By default,
 an IRQ may be handled on any CPU. Because a non-negligible part of packet
 processing takes place in receive interrupt handling, it is advantageous
 to spread receive interrupts between CPUs. To manually adjust the IRQ
-affinity of each interrupt see Documentation/IRQ-affinity.txt. Some systems
+affinity of each interrupt see Documentation/core-api/irq/irq-affinity.rst. Some systems
 will be running irqbalance, a daemon that dynamically optimizes IRQ
 assignments and as a result may override any manual settings.
 
@@ -160,7 +160,7 @@ can be configured for each receive queue using a sysfs file entry::
 
 This file implements a bitmap of CPUs. RPS is disabled when it is zero
 (the default), in which case packets are processed on the interrupting
-CPU. Documentation/IRQ-affinity.txt explains how CPUs are assigned to
+CPU. Documentation/core-api/irq/irq-affinity.rst explains how CPUs are assigned to
 the bitmap.
 
 
diff --git a/Documentation/translations/zh_CN/IRQ.txt b/Documentation/translations/zh_CN/IRQ.txt
index 956026d5cf82..9aec8dca4fcf 100644
--- a/Documentation/translations/zh_CN/IRQ.txt
+++ b/Documentation/translations/zh_CN/IRQ.txt
@@ -1,4 +1,4 @@
-Chinese translated version of Documentation/IRQ.txt
+Chinese translated version of Documentation/core-api/irq/index.rst
 
 If you have any comment or update to the content, please contact the
 original document maintainer directly.  However, if you have a problem
@@ -9,7 +9,7 @@ or if there is a problem with the translation.
 Maintainer: Eric W. Biederman <ebiederman@...ssion.com>
 Chinese maintainer: Fu Wei <tekkamanninja@...il.com>
 ---------------------------------------------------------------------
-Documentation/IRQ.txt 的中文翻译
+Documentation/core-api/irq/index.rst 的中文翻译
 
 如果想评论或更新本文的内容,请直接联系原文档的维护者。如果你使用英文
 交流有困难的话,也可以向中文版维护者求助。如果本翻译更新不及时或者翻
diff --git a/MAINTAINERS b/MAINTAINERS
index a1d7af532950..6eb3d85a646f 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -8974,7 +8974,7 @@ IRQ DOMAINS (IRQ NUMBER MAPPING LIBRARY)
 M:	Marc Zyngier <maz@...nel.org>
 S:	Maintained
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git irq/core
-F:	Documentation/IRQ-domain.txt
+F:	Documentation/core-api/irq/irq-domain.rst
 F:	include/linux/irqdomain.h
 F:	kernel/irq/irqdomain.c
 F:	kernel/irq/msi.c
-- 
2.25.4

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