[PATCH rcu 0/3] Documentation updates for v5.17

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* [PATCH rcu 0/3] Documentation updates for v5.17
@ 2021-12-02  0:05 Paul E. McKenney
  2021-12-02  0:06 ` [PATCH rcu 1/3] doc: Remove obsolete kernel-per-CPU-kthreads RCU_FAST_NO_HZ advice Paul E. McKenney
                   ` (2 more replies)
  0 siblings, 3 replies; 4+ messages in thread
From: Paul E. McKenney @ 2021-12-02  0:05 UTC (permalink / raw)
  To: rcu
  Cc: linux-kernel, kernel-team, mingo, jiangshanlai, akpm,
	mathieu.desnoyers, josh, tglx, peterz, rostedt, dhowells,
	edumazet, fweisbec, oleg, joel

Hello!

This series contains documentation updates:

1.	Remove obsolete kernel-per-CPU-kthreads RCU_FAST_NO_HZ advice.

2.	Add refcount analogy to What is RCU, courtesy of NeilBrown.

3.	RCU: Avoid 'Symbol' font-family in SVG figures, courtesy of
	Akira Yokosawa.

						Thanx, Paul

------------------------------------------------------------------------

 RCU/Design/Expedited-Grace-Periods/Funnel0.svg  |    4 -
 RCU/Design/Expedited-Grace-Periods/Funnel1.svg  |    4 -
 RCU/Design/Expedited-Grace-Periods/Funnel2.svg  |    4 -
 RCU/Design/Expedited-Grace-Periods/Funnel3.svg  |    4 -
 RCU/Design/Expedited-Grace-Periods/Funnel4.svg  |    4 -
 RCU/Design/Expedited-Grace-Periods/Funnel5.svg  |    4 -
 RCU/Design/Expedited-Grace-Periods/Funnel6.svg  |    4 -
 RCU/Design/Expedited-Grace-Periods/Funnel7.svg  |    4 -
 RCU/Design/Expedited-Grace-Periods/Funnel8.svg  |    4 -
 RCU/Design/Requirements/GPpartitionReaders1.svg |   36 ++++-----
 RCU/Design/Requirements/ReadersPartitionGP1.svg |   62 ++++++++--------
 RCU/whatisRCU.rst                               |   90 +++++++++++++++++++++---
 admin-guide/kernel-per-CPU-kthreads.rst         |    2 
 13 files changed, 150 insertions(+), 76 deletions(-)

^ permalink raw reply	[flat|nested] 4+ messages in thread

* [PATCH rcu 1/3] doc: Remove obsolete kernel-per-CPU-kthreads RCU_FAST_NO_HZ advice
  2021-12-02  0:05 [PATCH rcu 0/3] Documentation updates for v5.17 Paul E. McKenney
@ 2021-12-02  0:06 ` Paul E. McKenney
  2021-12-02  0:06 ` [PATCH rcu 2/3] doc: Add refcount analogy to What is RCU Paul E. McKenney
  2021-12-02  0:06 ` [PATCH rcu 3/3] doc: RCU: Avoid 'Symbol' font-family in SVG figures Paul E. McKenney
  2 siblings, 0 replies; 4+ messages in thread
From: Paul E. McKenney @ 2021-12-02  0:06 UTC (permalink / raw)
  To: rcu
  Cc: linux-kernel, kernel-team, mingo, jiangshanlai, akpm,
	mathieu.desnoyers, josh, tglx, peterz, rostedt, dhowells,
	edumazet, fweisbec, oleg, joel, Paul E. McKenney

This document advises building with both CONFIG_NO_HZ=y and
CONFIG_RCU_FAST_NO_HZ=y.  However, CONFIG_NO_HZ=y offloads callbacks from
all nohz_full CPUs, and CPUs with offloaded callbacks do not benefit from
CONFIG_RCU_FAST_NO_HZ=y.  Quite the opposite: CONFIG_RCU_FAST_NO_HZ=y
simply adds a bit of idle entry/exit overhead.

This commit therefore changes that advice to only CONFIG_NO_HZ=y.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
---
 Documentation/admin-guide/kernel-per-CPU-kthreads.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Documentation/admin-guide/kernel-per-CPU-kthreads.rst b/Documentation/admin-guide/kernel-per-CPU-kthreads.rst
index 5e51ee5b03589..e4a5fc26f1a9d 100644
--- a/Documentation/admin-guide/kernel-per-CPU-kthreads.rst
+++ b/Documentation/admin-guide/kernel-per-CPU-kthreads.rst
@@ -208,7 +208,7 @@ Do at least one of the following:
 2.	Enable RCU to do its processing remotely via dyntick-idle by
 	doing all of the following:
 
-	a.	Build with CONFIG_NO_HZ=y and CONFIG_RCU_FAST_NO_HZ=y.
+	a.	Build with CONFIG_NO_HZ=y.
 	b.	Ensure that the CPU goes idle frequently, allowing other
 		CPUs to detect that it has passed through an RCU quiescent
 		state.	If the kernel is built with CONFIG_NO_HZ_FULL=y,
-- 
2.31.1.189.g2e36527f23


^ permalink raw reply	[flat|nested] 4+ messages in thread

* [PATCH rcu 2/3] doc: Add refcount analogy to What is RCU
  2021-12-02  0:05 [PATCH rcu 0/3] Documentation updates for v5.17 Paul E. McKenney
  2021-12-02  0:06 ` [PATCH rcu 1/3] doc: Remove obsolete kernel-per-CPU-kthreads RCU_FAST_NO_HZ advice Paul E. McKenney
@ 2021-12-02  0:06 ` Paul E. McKenney
  2021-12-02  0:06 ` [PATCH rcu 3/3] doc: RCU: Avoid 'Symbol' font-family in SVG figures Paul E. McKenney
  2 siblings, 0 replies; 4+ messages in thread
From: Paul E. McKenney @ 2021-12-02  0:06 UTC (permalink / raw)
  To: rcu
  Cc: linux-kernel, kernel-team, mingo, jiangshanlai, akpm,
	mathieu.desnoyers, josh, tglx, peterz, rostedt, dhowells,
	edumazet, fweisbec, oleg, joel, NeilBrown, Akira Yokosawa,
	Paul E . McKenney

From: NeilBrown <neilb@suse.de>

The reader-writer-lock analogy is a useful way to think about RCU, but
it is not always applicable.  It is useful to have other analogies to
work with, and particularly to emphasise that no single analogy is
perfect.

This patch add a "RCU as reference count" to the "what is RCU" document.

See https://lwn.net/Articles/872559/

[ paulmck: Apply Akira Yokosawa feedback. ]
Reviewed-by: Akira Yokosawa <akiyks@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
---
 Documentation/RCU/whatisRCU.rst | 90 ++++++++++++++++++++++++++++++---
 1 file changed, 82 insertions(+), 8 deletions(-)

diff --git a/Documentation/RCU/whatisRCU.rst b/Documentation/RCU/whatisRCU.rst
index 17e95ab2a2014..c34d2212eaca2 100644
--- a/Documentation/RCU/whatisRCU.rst
+++ b/Documentation/RCU/whatisRCU.rst
@@ -39,9 +39,11 @@ different paths, as follows:
 
 :ref:`6.	ANALOGY WITH READER-WRITER LOCKING <6_whatisRCU>`
 
-:ref:`7.	FULL LIST OF RCU APIs <7_whatisRCU>`
+:ref:`7.	ANALOGY WITH REFERENCE COUNTING <7_whatisRCU>`
 
-:ref:`8.	ANSWERS TO QUICK QUIZZES <8_whatisRCU>`
+:ref:`8.	FULL LIST OF RCU APIs <8_whatisRCU>`
+
+:ref:`9.	ANSWERS TO QUICK QUIZZES <9_whatisRCU>`
 
 People who prefer starting with a conceptual overview should focus on
 Section 1, though most readers will profit by reading this section at
@@ -677,7 +679,7 @@ Quick Quiz #1:
 		occur when using this algorithm in a real-world Linux
 		kernel?  How could this deadlock be avoided?
 
-:ref:`Answers to Quick Quiz <8_whatisRCU>`
+:ref:`Answers to Quick Quiz <9_whatisRCU>`
 
 5B.  "TOY" EXAMPLE #2: CLASSIC RCU
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -732,7 +734,7 @@ Quick Quiz #2:
 		Give an example where Classic RCU's read-side
 		overhead is **negative**.
 
-:ref:`Answers to Quick Quiz <8_whatisRCU>`
+:ref:`Answers to Quick Quiz <9_whatisRCU>`
 
 .. _quiz_3:
 
@@ -741,7 +743,7 @@ Quick Quiz #3:
 		critical section, what the heck do you do in
 		CONFIG_PREEMPT_RT, where normal spinlocks can block???
 
-:ref:`Answers to Quick Quiz <8_whatisRCU>`
+:ref:`Answers to Quick Quiz <9_whatisRCU>`
 
 .. _6_whatisRCU:
 
@@ -872,7 +874,79 @@ be used in place of synchronize_rcu().
 
 .. _7_whatisRCU:
 
-7.  FULL LIST OF RCU APIs
+7.  ANALOGY WITH REFERENCE COUNTING
+-----------------------------------
+
+The reader-writer analogy (illustrated by the previous section) is not
+always the best way to think about using RCU.  Another helpful analogy
+considers RCU an effective reference count on everything which is
+protected by RCU.
+
+A reference count typically does not prevent the referenced object's
+values from changing, but does prevent changes to type -- particularly the
+gross change of type that happens when that object's memory is freed and
+re-allocated for some other purpose.  Once a type-safe reference to the
+object is obtained, some other mechanism is needed to ensure consistent
+access to the data in the object.  This could involve taking a spinlock,
+but with RCU the typical approach is to perform reads with SMP-aware
+operations such as smp_load_acquire(), to perform updates with atomic
+read-modify-write operations, and to provide the necessary ordering.
+RCU provides a number of support functions that embed the required
+operations and ordering, such as the list_for_each_entry_rcu() macro
+used in the previous section.
+
+A more focused view of the reference counting behavior is that,
+between rcu_read_lock() and rcu_read_unlock(), any reference taken with
+rcu_dereference() on a pointer marked as ``__rcu`` can be treated as
+though a reference-count on that object has been temporarily increased.
+This prevents the object from changing type.  Exactly what this means
+will depend on normal expectations of objects of that type, but it
+typically includes that spinlocks can still be safely locked, normal
+reference counters can be safely manipulated, and ``__rcu`` pointers
+can be safely dereferenced.
+
+Some operations that one might expect to see on an object for
+which an RCU reference is held include:
+
+ - Copying out data that is guaranteed to be stable by the object's type.
+ - Using kref_get_unless_zero() or similar to get a longer-term
+   reference.  This may fail of course.
+ - Acquiring a spinlock in the object, and checking if the object still
+   is the expected object and if so, manipulating it freely.
+
+The understanding that RCU provides a reference that only prevents a
+change of type is particularly visible with objects allocated from a
+slab cache marked ``SLAB_TYPESAFE_BY_RCU``.  RCU operations may yield a
+reference to an object from such a cache that has been concurrently
+freed and the memory reallocated to a completely different object,
+though of the same type.  In this case RCU doesn't even protect the
+identity of the object from changing, only its type.  So the object
+found may not be the one expected, but it will be one where it is safe
+to take a reference or spinlock and then confirm that the identity
+matches the expectations.
+
+With traditional reference counting -- such as that implemented by the
+kref library in Linux -- there is typically code that runs when the last
+reference to an object is dropped.  With kref, this is the function
+passed to kref_put().  When RCU is being used, such finalization code
+must not be run until all ``__rcu`` pointers referencing the object have
+been updated, and then a grace period has passed.  Every remaining
+globally visible pointer to the object must be considered to be a
+potential counted reference, and the finalization code is typically run
+using call_rcu() only after all those pointers have been changed.
+
+To see how to choose between these two analogies -- of RCU as a
+reader-writer lock and RCU as a reference counting system -- it is useful
+to reflect on the scale of the thing being protected.  The reader-writer
+lock analogy looks at larger multi-part objects such as a linked list
+and shows how RCU can facilitate concurrency while elements are added
+to, and removed from, the list.  The reference-count analogy looks at
+the individual objects and looks at how they can be accessed safely
+within whatever whole they are a part of.
+
+.. _8_whatisRCU:
+
+8.  FULL LIST OF RCU APIs
 -------------------------
 
 The RCU APIs are documented in docbook-format header comments in the
@@ -1035,9 +1109,9 @@ g.	Otherwise, use RCU.
 Of course, this all assumes that you have determined that RCU is in fact
 the right tool for your job.
 
-.. _8_whatisRCU:
+.. _9_whatisRCU:
 
-8.  ANSWERS TO QUICK QUIZZES
+9.  ANSWERS TO QUICK QUIZZES
 ----------------------------
 
 Quick Quiz #1:
-- 
2.31.1.189.g2e36527f23


^ permalink raw reply	[flat|nested] 4+ messages in thread

* [PATCH rcu 3/3] doc: RCU: Avoid 'Symbol' font-family in SVG figures
  2021-12-02  0:05 [PATCH rcu 0/3] Documentation updates for v5.17 Paul E. McKenney
  2021-12-02  0:06 ` [PATCH rcu 1/3] doc: Remove obsolete kernel-per-CPU-kthreads RCU_FAST_NO_HZ advice Paul E. McKenney
  2021-12-02  0:06 ` [PATCH rcu 2/3] doc: Add refcount analogy to What is RCU Paul E. McKenney
@ 2021-12-02  0:06 ` Paul E. McKenney
  2 siblings, 0 replies; 4+ messages in thread
From: Paul E. McKenney @ 2021-12-02  0:06 UTC (permalink / raw)
  To: rcu
  Cc: linux-kernel, kernel-team, mingo, jiangshanlai, akpm,
	mathieu.desnoyers, josh, tglx, peterz, rostedt, dhowells,
	edumazet, fweisbec, oleg, joel, Akira Yokosawa,
	Paul E . McKenney

From: Akira Yokosawa <akiyks@gmail.com>

On Ubuntu Focal, strings in some of SVG files under
Documentation/RCU/Design can not be rendered properly when
converted to PDF.

Ubuntu releases since Focal and Debian bullseye have trouble
with "Symbol" font-family in SVG files.

As those strings are mostly API names such as "READ_ONCE()",
"WRITE_ONCE(), "rcu_read_lock()", and so on, using a generic
monospace font-family should be a good alternative.

Substitute the font-family name by a simple sed pattern:

    's/Symbol/monospace/g'

Signed-off-by: Akira Yokosawa <akiyks@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
---
 .../Expedited-Grace-Periods/Funnel0.svg       |  4 +-
 .../Expedited-Grace-Periods/Funnel1.svg       |  4 +-
 .../Expedited-Grace-Periods/Funnel2.svg       |  4 +-
 .../Expedited-Grace-Periods/Funnel3.svg       |  4 +-
 .../Expedited-Grace-Periods/Funnel4.svg       |  4 +-
 .../Expedited-Grace-Periods/Funnel5.svg       |  4 +-
 .../Expedited-Grace-Periods/Funnel6.svg       |  4 +-
 .../Expedited-Grace-Periods/Funnel7.svg       |  4 +-
 .../Expedited-Grace-Periods/Funnel8.svg       |  4 +-
 .../Requirements/GPpartitionReaders1.svg      | 36 +++++------
 .../Requirements/ReadersPartitionGP1.svg      | 62 +++++++++----------
 11 files changed, 67 insertions(+), 67 deletions(-)

diff --git a/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel0.svg b/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel0.svg
index 98af665579088..16b1ff0ad38c4 100644
--- a/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel0.svg
+++ b/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel0.svg
@@ -116,7 +116,7 @@
     <flowRoot
        xml:space="preserve"
        id="flowRoot2985"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"><flowRegion
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"><flowRegion
          id="flowRegion2987"><rect
            id="rect2989"
            width="82.85714"
@@ -125,7 +125,7 @@
            y="492.36218" /></flowRegion><flowPara
          id="flowPara2991" /></flowRoot>    <text
        xml:space="preserve"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
        x="362.371"
        y="262.51819"
        id="text4441"
diff --git a/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel1.svg b/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel1.svg
index e0184a37aec74..684a4b9697259 100644
--- a/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel1.svg
+++ b/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel1.svg
@@ -116,7 +116,7 @@
     <flowRoot
        xml:space="preserve"
        id="flowRoot2985"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"><flowRegion
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"><flowRegion
          id="flowRegion2987"><rect
            id="rect2989"
            width="82.85714"
@@ -125,7 +125,7 @@
            y="492.36218" /></flowRegion><flowPara
          id="flowPara2991" /></flowRoot>    <text
        xml:space="preserve"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
        x="362.371"
        y="262.51819"
        id="text4441"
diff --git a/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel2.svg b/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel2.svg
index 1bc3fed54d58f..8fb2454d95443 100644
--- a/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel2.svg
+++ b/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel2.svg
@@ -116,7 +116,7 @@
     <flowRoot
        xml:space="preserve"
        id="flowRoot2985"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"><flowRegion
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"><flowRegion
          id="flowRegion2987"><rect
            id="rect2989"
            width="82.85714"
@@ -125,7 +125,7 @@
            y="492.36218" /></flowRegion><flowPara
          id="flowPara2991" /></flowRoot>    <text
        xml:space="preserve"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
        x="362.371"
        y="262.51819"
        id="text4441"
diff --git a/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel3.svg b/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel3.svg
index 6d8a1bffb3e4b..5d4f22d5662c6 100644
--- a/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel3.svg
+++ b/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel3.svg
@@ -116,7 +116,7 @@
     <flowRoot
        xml:space="preserve"
        id="flowRoot2985"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"><flowRegion
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"><flowRegion
          id="flowRegion2987"><rect
            id="rect2989"
            width="82.85714"
@@ -125,7 +125,7 @@
            y="492.36218" /></flowRegion><flowPara
          id="flowPara2991" /></flowRoot>    <text
        xml:space="preserve"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
        x="362.371"
        y="262.51819"
        id="text4441"
diff --git a/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel4.svg b/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel4.svg
index 44018fd6342ba..b89b02869914d 100644
--- a/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel4.svg
+++ b/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel4.svg
@@ -116,7 +116,7 @@
     <flowRoot
        xml:space="preserve"
        id="flowRoot2985"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"><flowRegion
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"><flowRegion
          id="flowRegion2987"><rect
            id="rect2989"
            width="82.85714"
@@ -125,7 +125,7 @@
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-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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diff --git a/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel5.svg b/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel5.svg
index e5eef50454fb6..90f1c77bea2f7 100644
--- a/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel5.svg
+++ b/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel5.svg
@@ -116,7 +116,7 @@
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-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"><flowRegion
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"><flowRegion
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@@ -125,7 +125,7 @@
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-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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diff --git a/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel6.svg b/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel6.svg
index fbd2c1892886e..3e5651da031a1 100644
--- a/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel6.svg
+++ b/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel6.svg
@@ -116,7 +116,7 @@
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-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"><flowRegion
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"><flowRegion
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@@ -125,7 +125,7 @@
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-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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diff --git a/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel7.svg b/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel7.svg
index 502e159ed278e..9483f08d345e0 100644
--- a/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel7.svg
+++ b/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel7.svg
@@ -116,7 +116,7 @@
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-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"><flowRegion
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"><flowRegion
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            width="82.85714"
@@ -125,7 +125,7 @@
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+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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index 677401551c7d0..1101ec30e6042 100644
--- a/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel8.svg
+++ b/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel8.svg
@@ -116,7 +116,7 @@
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-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"><flowRegion
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"><flowRegion
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@@ -125,7 +125,7 @@
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+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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diff --git a/Documentation/RCU/Design/Requirements/GPpartitionReaders1.svg b/Documentation/RCU/Design/Requirements/GPpartitionReaders1.svg
index 4b4014fda7703..87851a8fac1e1 100644
--- a/Documentation/RCU/Design/Requirements/GPpartitionReaders1.svg
+++ b/Documentation/RCU/Design/Requirements/GPpartitionReaders1.svg
@@ -88,7 +88,7 @@
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-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"><flowRegion
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"><flowRegion
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          y="-261.66608"
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-         style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+         style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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@@ -135,7 +135,7 @@
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     <text
        xml:space="preserve"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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        id="text4429"
@@ -146,7 +146,7 @@
          y="268.18076">WRITE_ONCE(a, 1);</tspan></text>
     <text
        xml:space="preserve"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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@@ -157,7 +157,7 @@
          y="439.13766">WRITE_ONCE(b, 1);</tspan></text>
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        xml:space="preserve"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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        id="text4445"
@@ -168,7 +168,7 @@
          y="309.29346">r1 = READ_ONCE(a);</tspan></text>
     <text
        xml:space="preserve"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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@@ -179,7 +179,7 @@
          y="520.61786">WRITE_ONCE(c, 1);</tspan></text>
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        xml:space="preserve"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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        id="text4453"
@@ -190,7 +190,7 @@
          y="384.71124">r2 = READ_ONCE(b);</tspan></text>
     <text
        xml:space="preserve"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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        id="text4457"
@@ -201,7 +201,7 @@
          y="582.13617">r3 = READ_ONCE(c);</tspan></text>
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        xml:space="preserve"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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        y="213.91006"
        id="text4461"
@@ -212,7 +212,7 @@
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     <text
        xml:space="preserve"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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        id="text4461-6"
@@ -223,7 +223,7 @@
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-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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        xml:space="preserve"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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        y="251.53981"
        id="text4429-8"
@@ -262,7 +262,7 @@
          y="251.53981">rcu_read_lock();</tspan></text>
     <text
        xml:space="preserve"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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        y="367.91556"
        id="text4429-8-9"
@@ -273,7 +273,7 @@
          y="367.91556">rcu_read_lock();</tspan></text>
     <text
        xml:space="preserve"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
        x="396.10254"
        y="597.40289"
        id="text4429-8-9-3"
@@ -284,7 +284,7 @@
          y="597.40289">rcu_read_unlock();</tspan></text>
     <text
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-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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@@ -300,7 +300,7 @@
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-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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@@ -324,7 +324,7 @@
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+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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@@ -361,7 +361,7 @@
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-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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diff --git a/Documentation/RCU/Design/Requirements/ReadersPartitionGP1.svg b/Documentation/RCU/Design/Requirements/ReadersPartitionGP1.svg
index 48cd1623d4d49..e2a8af592babb 100644
--- a/Documentation/RCU/Design/Requirements/ReadersPartitionGP1.svg
+++ b/Documentation/RCU/Design/Requirements/ReadersPartitionGP1.svg
@@ -116,7 +116,7 @@
     <flowRoot
        xml:space="preserve"
        id="flowRoot2985"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"><flowRegion
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"><flowRegion
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            id="rect2989"
            width="82.85714"
@@ -131,7 +131,7 @@
          id="text2993"
          y="-261.66608"
          x="436.12299"
-         style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+         style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
          xml:space="preserve"
          transform="matrix(0,1,-1,0,0,0)"><tspan
            y="-261.66608"
@@ -163,7 +163,7 @@
     </g>
     <text
        xml:space="preserve"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
        x="112.04738"
        y="268.18076"
        id="text4429"
@@ -174,7 +174,7 @@
          y="268.18076">WRITE_ONCE(a, 1);</tspan></text>
     <text
        xml:space="preserve"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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        y="487.13766"
        id="text4441"
@@ -185,7 +185,7 @@
          y="487.13766">WRITE_ONCE(b, 1);</tspan></text>
     <text
        xml:space="preserve"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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        y="297.29346"
        id="text4445"
@@ -196,7 +196,7 @@
          y="297.29346">r1 = READ_ONCE(a);</tspan></text>
     <text
        xml:space="preserve"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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@@ -207,7 +207,7 @@
          y="554.61786">WRITE_ONCE(c, 1);</tspan></text>
     <text
        xml:space="preserve"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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@@ -218,7 +218,7 @@
          y="370.71124">WRITE_ONCE(d, 1);</tspan></text>
     <text
        xml:space="preserve"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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        id="text4457"
@@ -229,7 +229,7 @@
          y="572.13617">r2 = READ_ONCE(c);</tspan></text>
     <text
        xml:space="preserve"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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@@ -240,7 +240,7 @@
          y="213.91006">thread0()</tspan></text>
     <text
        xml:space="preserve"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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        id="text4461-6"
@@ -251,7 +251,7 @@
          y="213.91006">thread1()</tspan></text>
     <text
        xml:space="preserve"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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@@ -281,7 +281,7 @@
        sodipodi:nodetypes="cc" />
     <text
        xml:space="preserve"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
        x="111.75929"
        y="251.53981"
        id="text4429-8"
@@ -292,7 +292,7 @@
          y="251.53981">rcu_read_lock();</tspan></text>
     <text
        xml:space="preserve"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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        id="text4429-8-9"
@@ -303,7 +303,7 @@
          y="353.91556">rcu_read_lock();</tspan></text>
     <text
        xml:space="preserve"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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        id="text4429-8-9-3"
@@ -314,7 +314,7 @@
          y="587.40289">rcu_read_unlock();</tspan></text>
     <text
        xml:space="preserve"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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@@ -331,7 +331,7 @@
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+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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@@ -355,7 +355,7 @@
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+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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@@ -392,7 +392,7 @@
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-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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@@ -421,7 +421,7 @@
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          y="-261.66608"
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+         style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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          transform="matrix(0,1,-1,0,0,0)"><tspan
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@@ -453,7 +453,7 @@
     </g>
     <text
        xml:space="preserve"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
        x="541.70508"
        y="387.6217"
        id="text4445-0"
@@ -464,7 +464,7 @@
          y="387.6217">r3 = READ_ONCE(d);</tspan></text>
     <text
        xml:space="preserve"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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@@ -488,7 +488,7 @@
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        xml:space="preserve"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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        id="text4648-4-3-1"
@@ -499,7 +499,7 @@
          y="427.29443">QS</tspan></text>
     <text
        xml:space="preserve"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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@@ -510,7 +510,7 @@
          y="461.83929">r4 = READ_ONCE(b);</tspan></text>
     <text
        xml:space="preserve"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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@@ -521,7 +521,7 @@
          y="669.26422">r5 = READ_ONCE(e);</tspan></text>
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-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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@@ -532,7 +532,7 @@
          y="445.04358">rcu_read_lock();</tspan></text>
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        xml:space="preserve"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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        y="684.53094"
        id="text4429-8-9-3-8"
@@ -543,7 +543,7 @@
          y="684.53094">rcu_read_unlock();</tspan></text>
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        xml:space="preserve"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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@@ -567,7 +567,7 @@
        sodipodi:open="true" />
     <text
        xml:space="preserve"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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        y="609.59003"
        id="text4648-5"
@@ -591,7 +591,7 @@
        sodipodi:open="true" />
     <text
        xml:space="preserve"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
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        y="586.99133"
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@@ -615,7 +615,7 @@
        sodipodi:open="true" />
     <text
        xml:space="preserve"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
        x="546.22791"
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        id="text4461-2-5"
@@ -626,7 +626,7 @@
          y="213.91006">thread3()</tspan></text>
     <text
        xml:space="preserve"
-       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Symbol;-inkscape-font-specification:Symbol"
+       style="font-size:10px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:monospace;-inkscape-font-specification:monospace"
        x="684.00067"
        y="213.91006"
        id="text4461-2-1"
-- 
2.31.1.189.g2e36527f23


^ permalink raw reply	[flat|nested] 4+ messages in thread

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-- links below jump to the message on this page --
2021-12-02  0:05 [PATCH rcu 0/3] Documentation updates for v5.17 Paul E. McKenney
2021-12-02  0:06 ` [PATCH rcu 1/3] doc: Remove obsolete kernel-per-CPU-kthreads RCU_FAST_NO_HZ advice Paul E. McKenney
2021-12-02  0:06 ` [PATCH rcu 2/3] doc: Add refcount analogy to What is RCU Paul E. McKenney
2021-12-02  0:06 ` [PATCH rcu 3/3] doc: RCU: Avoid 'Symbol' font-family in SVG figures Paul E. McKenney

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