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-rw-r--r--Documentation/RCU/Design/Expedited-Grace-Periods/Funnel0.svg4
-rw-r--r--Documentation/RCU/Design/Expedited-Grace-Periods/Funnel1.svg4
-rw-r--r--Documentation/RCU/Design/Expedited-Grace-Periods/Funnel2.svg4
-rw-r--r--Documentation/RCU/Design/Expedited-Grace-Periods/Funnel3.svg4
-rw-r--r--Documentation/RCU/Design/Expedited-Grace-Periods/Funnel4.svg4
-rw-r--r--Documentation/RCU/Design/Expedited-Grace-Periods/Funnel5.svg4
-rw-r--r--Documentation/RCU/Design/Expedited-Grace-Periods/Funnel6.svg4
-rw-r--r--Documentation/RCU/Design/Expedited-Grace-Periods/Funnel7.svg4
-rw-r--r--Documentation/RCU/Design/Expedited-Grace-Periods/Funnel8.svg4
-rw-r--r--Documentation/RCU/Design/Requirements/GPpartitionReaders1.svg36
-rw-r--r--Documentation/RCU/Design/Requirements/ReadersPartitionGP1.svg62
-rw-r--r--Documentation/RCU/stallwarn.rst11
-rw-r--r--Documentation/RCU/whatisRCU.rst90
13 files changed, 149 insertions, 86 deletions
diff --git a/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel0.svg b/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel0.svg
index 98af66557908..16b1ff0ad38c 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"
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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"
x="362.371"
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diff --git a/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel1.svg b/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel1.svg
index e0184a37aec7..684a4b969725 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 1bc3fed54d58..8fb2454d9544 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 6d8a1bffb3e4..5d4f22d5662c 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 44018fd6342b..b89b02869914 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 @@
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/Funnel5.svg b/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel5.svg
index e5eef50454fb..90f1c77bea2f 100644
--- a/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel5.svg
+++ b/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel5.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/Funnel6.svg b/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel6.svg
index fbd2c1892886..3e5651da031a 100644
--- a/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel6.svg
+++ b/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel6.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/Funnel7.svg b/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel7.svg
index 502e159ed278..9483f08d345e 100644
--- a/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel7.svg
+++ b/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel7.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/Funnel8.svg b/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel8.svg
index 677401551c7d..1101ec30e604 100644
--- a/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel8.svg
+++ b/Documentation/RCU/Design/Expedited-Grace-Periods/Funnel8.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/Requirements/GPpartitionReaders1.svg b/Documentation/RCU/Design/Requirements/GPpartitionReaders1.svg
index 4b4014fda770..87851a8fac1e 100644
--- a/Documentation/RCU/Design/Requirements/GPpartitionReaders1.svg
+++ b/Documentation/RCU/Design/Requirements/GPpartitionReaders1.svg
@@ -88,7 +88,7 @@
<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"
@@ -103,7 +103,7 @@
id="text2993"
y="-261.66608"
x="412.12299"
- 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"
@@ -135,7 +135,7 @@
</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"
@@ -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"
x="112.04738"
y="439.13766"
id="text4441"
@@ -157,7 +157,7 @@
y="439.13766">WRITE_ONCE(b, 1);</tspan></text>
<text
xml:space="preserve"
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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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id="text4445"
@@ -168,7 +168,7 @@
y="309.29346">r1 = READ_ONCE(a);</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:monospace;-inkscape-font-specification:monospace"
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id="text4449"
@@ -179,7 +179,7 @@
y="520.61786">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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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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@@ -201,7 +201,7 @@
y="582.13617">r3 = READ_ONCE(c);</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:monospace;-inkscape-font-specification:monospace"
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id="text4461"
@@ -212,7 +212,7 @@
y="213.91006">thread0()</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:monospace;-inkscape-font-specification:monospace"
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id="text4461-6"
@@ -223,7 +223,7 @@
y="213.91006">thread1()</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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@@ -251,7 +251,7 @@
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<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:monospace;-inkscape-font-specification:monospace"
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id="text4429-8"
@@ -262,7 +262,7 @@
y="251.53981">rcu_read_lock();</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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@@ -273,7 +273,7 @@
y="367.91556">rcu_read_lock();</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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id="text4429-8-9-3"
@@ -284,7 +284,7 @@
y="597.40289">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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@@ -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:monospace;-inkscape-font-specification:monospace"
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@@ -324,7 +324,7 @@
sodipodi:open="true" />
<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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@@ -361,7 +361,7 @@
sodipodi:open="true" />
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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 48cd1623d4d4..e2a8af592bab 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
id="flowRegion2987"><rect
id="rect2989"
width="82.85714"
@@ -131,7 +131,7 @@
id="text2993"
y="-261.66608"
x="436.12299"
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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"
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"
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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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id="text4449"
@@ -207,7 +207,7 @@
y="554.61786">WRITE_ONCE(c, 1);</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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@@ -218,7 +218,7 @@
y="370.71124">WRITE_ONCE(d, 1);</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:monospace;-inkscape-font-specification:monospace"
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@@ -229,7 +229,7 @@
y="572.13617">r2 = READ_ONCE(c);</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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id="text4461"
@@ -240,7 +240,7 @@
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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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@@ -251,7 +251,7 @@
y="213.91006">thread1()</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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+ 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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@@ -292,7 +292,7 @@
y="251.53981">rcu_read_lock();</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:monospace;-inkscape-font-specification:monospace"
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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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y="587.40289"
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"
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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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+ 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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+ 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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+ 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"
@@ -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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+ 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="540.94702"
y="427.29443"
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"
x="686.27747"
y="461.83929"
id="text4453-7"
@@ -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"
x="686.27747"
y="669.26422"
id="text4457-9"
@@ -521,7 +521,7 @@
y="669.26422">r5 = READ_ONCE(e);</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="686.27747"
y="445.04358"
id="text4429-8-9-33"
@@ -532,7 +532,7 @@
y="445.04358">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="686.27747"
y="684.53094"
id="text4429-8-9-3-8"
@@ -543,7 +543,7 @@
y="684.53094">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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@@ -567,7 +567,7 @@
sodipodi:open="true" />
<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:monospace;-inkscape-font-specification:monospace"
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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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+ 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"
y="213.91006"
id="text4461-2-5"
@@ -626,7 +626,7 @@
y="213.91006">thread3()</tspan></text>
<text
xml:space="preserve"
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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/stallwarn.rst b/Documentation/RCU/stallwarn.rst
index 28f8ad16db25..78404625bad2 100644
--- a/Documentation/RCU/stallwarn.rst
+++ b/Documentation/RCU/stallwarn.rst
@@ -254,17 +254,6 @@ period (in this case 2603), the grace-period sequence number (7075), and
an estimate of the total number of RCU callbacks queued across all CPUs
(625 in this case).
-In kernels with CONFIG_RCU_FAST_NO_HZ, more information is printed
-for each CPU::
-
- 0: (64628 ticks this GP) idle=dd5/3fffffffffffffff/0 softirq=82/543 last_accelerate: a345/d342 dyntick_enabled: 1
-
-The "last_accelerate:" prints the low-order 16 bits (in hex) of the
-jiffies counter when this CPU last invoked rcu_try_advance_all_cbs()
-from rcu_needs_cpu() or last invoked rcu_accelerate_cbs() from
-rcu_prepare_for_idle(). "dyntick_enabled: 1" indicates that dyntick-idle
-processing is enabled.
-
If the grace period ends just as the stall warning starts printing,
there will be a spurious stall-warning message, which will include
the following::
diff --git a/Documentation/RCU/whatisRCU.rst b/Documentation/RCU/whatisRCU.rst
index 17e95ab2a201..c34d2212eaca 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: