docs: sysctl: convert to ReST

Rename the /proc/sys/ documentation files to ReST, using the README file as a template for an index.rst, adding the other files there via TOC markup. Despite being written on different times with different styles, try to make them somewhat coherent with a similar look and feel, ensuring that they'll look nice as both raw text file and as via the html output produced by the Sphinx build system. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <[email protected]>
torvalds · Jul 15, 2019 · 53b9537 · 53b9537
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diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
@@ -3144,7 +3144,7 @@
 	numa_zonelist_order= [KNL, BOOT] Select zonelist order for NUMA.
 			'node', 'default' can be specified
 			This can be set from sysctl after boot.
-			See Documentation/sysctl/vm.txt for details.
+			See Documentation/sysctl/vm.rst for details.
 
 	ohci1394_dma=early	[HW] enable debugging via the ohci1394 driver.
 			See Documentation/debugging-via-ohci1394.txt for more

diff --git a/Documentation/admin-guide/mm/index.rst b/Documentation/admin-guide/mm/index.rst
@@ -11,7 +11,7 @@ processes address space and many other cool things.
 Linux memory management is a complex system with many configurable
 settings. Most of these settings are available via ``/proc``
 filesystem and can be quired and adjusted using ``sysctl``. These APIs
-are described in Documentation/sysctl/vm.txt and in `man 5 proc`_.
+are described in Documentation/sysctl/vm.rst and in `man 5 proc`_.
 
 .. _man 5 proc: http://man7.org/linux/man-pages/man5/proc.5.html
 

diff --git a/Documentation/admin-guide/mm/ksm.rst b/Documentation/admin-guide/mm/ksm.rst
@@ -59,7 +59,7 @@ MADV_UNMERGEABLE is applied to a range which was never MADV_MERGEABLE.
 
 If a region of memory must be split into at least one new MADV_MERGEABLE
 or MADV_UNMERGEABLE region, the madvise may return ENOMEM if the process
-will exceed ``vm.max_map_count`` (see Documentation/sysctl/vm.txt).
+will exceed ``vm.max_map_count`` (see Documentation/sysctl/vm.rst).
 
 Like other madvise calls, they are intended for use on mapped areas of
 the user address space: they will report ENOMEM if the specified range

diff --git a/Documentation/core-api/printk-formats.rst b/Documentation/core-api/printk-formats.rst
@@ -119,7 +119,7 @@ Kernel Pointers
 
 For printing kernel pointers which should be hidden from unprivileged
 users. The behaviour of %pK depends on the kptr_restrict sysctl - see
-Documentation/sysctl/kernel.txt for more details.
+Documentation/sysctl/kernel.rst for more details.
 
 Unmodified Addresses
 --------------------

diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
@@ -2287,7 +2287,7 @@ addr_scope_policy - INTEGER
 
 
 /proc/sys/net/core/*
-	Please see: Documentation/sysctl/net.txt for descriptions of these entries.
+	Please see: Documentation/sysctl/net.rst for descriptions of these entries.
 
 
 /proc/sys/net/unix/*

diff --git a/Documentation/sysctl/abi.rst b/Documentation/sysctl/abi.rst
@@ -0,0 +1,67 @@
+================================
+Documentation for /proc/sys/abi/
+================================
+
+kernel version 2.6.0.test2
+
+Copyright (c) 2003,  Fabian Frederick <[email protected]>
+
+For general info: index.rst.
+
+------------------------------------------------------------------------------
+
+This path is binary emulation relevant aka personality types aka abi.
+When a process is executed, it's linked to an exec_domain whose
+personality is defined using values available from /proc/sys/abi.
+You can find further details about abi in include/linux/personality.h.
+
+Here are the files featuring in 2.6 kernel:
+
+- defhandler_coff
+- defhandler_elf
+- defhandler_lcall7
+- defhandler_libcso
+- fake_utsname
+- trace
+
+defhandler_coff
+---------------
+
+defined value:
+	PER_SCOSVR3::
+
+		0x0003 | STICKY_TIMEOUTS | WHOLE_SECONDS | SHORT_INODE
+
+defhandler_elf
+--------------
+
+defined value:
+	PER_LINUX::
+
+		0
+
+defhandler_lcall7
+-----------------
+
+defined value :
+	PER_SVR4::
+
+		0x0001 | STICKY_TIMEOUTS | MMAP_PAGE_ZERO,
+
+defhandler_libsco
+-----------------
+
+defined value:
+	PER_SVR4::
+
+		0x0001 | STICKY_TIMEOUTS | MMAP_PAGE_ZERO,
+
+fake_utsname
+------------
+
+Unused
+
+trace
+-----
+
+Unused
diff --git a/Documentation/sysctl/abi.txt b/Documentation/sysctl/abi.txt