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authorKees Cook <kees+treewide@kernel.org>2026-09-02 15:31:14 -0700
committerKees Cook <kees@kernel.org>2026-09-04 21:37:00 -0700
commit3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d (patch)
treec65086f9bdcd48c6360fb7cb4598bca084da1f32 /Documentation/gpu/dp-mst
downloadlinux-stable-3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d.tar.gz
linux-stable-3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d.zip
treewide: refresh kmalloc_obj() conversionsgrafted
This is another run of the Coccinelle script for converting kmalloc() family of allocations to kmalloc_obj() via the existing rules in scripts/coccinelle/api/kmalloc_objs.cocci This catches both the set of kmalloc() uses added since the first kmalloc_obj() conversions in v7.0 and adds a large group missed in the first pass due to Coccinelle not interacting well with the cleanup.h scoped_...() family of macros[1]. I worked around this with spatch's "--macro-file" argument to a file with all the scoped_...() macros mapped to Coccinelle's YACFE_ITERATOR[2] as that was the closest viable control flow indicator I could find. Build tested allmodconfig on x86, arm64, arm, loongarch, mips, powerpc, riscv, and s390 with no new warnings. Link: https://lore.kernel.org/lkml/202609021314.8A9C0B8@keescook/ [1] Link: https://github.com/coccinelle/coccinelle/blob/master/standard.h [2] Signed-off-by: Kees Cook <kees+treewide@kernel.org>
Diffstat (limited to 'Documentation/gpu/dp-mst')
-rw-r--r--Documentation/gpu/dp-mst/topology-figure-1.dot52
-rw-r--r--Documentation/gpu/dp-mst/topology-figure-2.dot56
-rw-r--r--Documentation/gpu/dp-mst/topology-figure-3.dot59
3 files changed, 167 insertions, 0 deletions
diff --git a/Documentation/gpu/dp-mst/topology-figure-1.dot b/Documentation/gpu/dp-mst/topology-figure-1.dot
new file mode 100644
index 000000000..157e17c7e
--- /dev/null
+++ b/Documentation/gpu/dp-mst/topology-figure-1.dot
@@ -0,0 +1,52 @@
+digraph T {
+ /* Make sure our payloads are always drawn below the driver node */
+ subgraph cluster_driver {
+ fillcolor = grey;
+ style = filled;
+ driver -> {payload1, payload2} [dir=none];
+ }
+
+ /* Driver malloc references */
+ edge [style=dashed];
+ driver -> port1;
+ driver -> port2;
+ driver -> port3:e;
+ driver -> port4;
+
+ payload1:s -> port1:e;
+ payload2:s -> port3:e;
+ edge [style=""];
+
+ subgraph cluster_topology {
+ label="Topology Manager";
+ labelloc=bottom;
+
+ /* Topology references */
+ mstb1 -> {port1, port2};
+ port1 -> mstb2;
+ port2 -> mstb3 -> {port3, port4};
+ port3 -> mstb4;
+
+ /* Malloc references */
+ edge [style=dashed;dir=back];
+ mstb1 -> {port1, port2};
+ port1 -> mstb2;
+ port2 -> mstb3 -> {port3, port4};
+ port3 -> mstb4;
+ }
+
+ driver [label="DRM driver";style=filled;shape=box;fillcolor=lightblue];
+
+ payload1 [label="Payload #1";style=filled;shape=box;fillcolor=lightblue];
+ payload2 [label="Payload #2";style=filled;shape=box;fillcolor=lightblue];
+
+ mstb1 [label="MSTB #1";style=filled;fillcolor=palegreen;shape=oval];
+ mstb2 [label="MSTB #2";style=filled;fillcolor=palegreen;shape=oval];
+ mstb3 [label="MSTB #3";style=filled;fillcolor=palegreen;shape=oval];
+ mstb4 [label="MSTB #4";style=filled;fillcolor=palegreen;shape=oval];
+
+ port1 [label="Port #1";shape=oval];
+ port2 [label="Port #2";shape=oval];
+ port3 [label="Port #3";shape=oval];
+ port4 [label="Port #4";shape=oval];
+}
diff --git a/Documentation/gpu/dp-mst/topology-figure-2.dot b/Documentation/gpu/dp-mst/topology-figure-2.dot
new file mode 100644
index 000000000..4243dd173
--- /dev/null
+++ b/Documentation/gpu/dp-mst/topology-figure-2.dot
@@ -0,0 +1,56 @@
+digraph T {
+ /* Make sure our payloads are always drawn below the driver node */
+ subgraph cluster_driver {
+ fillcolor = grey;
+ style = filled;
+ driver -> {payload1, payload2} [dir=none];
+ }
+
+ /* Driver malloc references */
+ edge [style=dashed];
+ driver -> port1;
+ driver -> port2;
+ driver -> port3:e;
+ driver -> port4 [color=red];
+
+ payload1:s -> port1:e;
+ payload2:s -> port3:e;
+ edge [style=""];
+
+ subgraph cluster_topology {
+ label="Topology Manager";
+ labelloc=bottom;
+
+ /* Topology references */
+ mstb1 -> {port1, port2};
+ port1 -> mstb2;
+ edge [color=red];
+ port2 -> mstb3 -> {port3, port4};
+ port3 -> mstb4;
+ edge [color=""];
+
+ /* Malloc references */
+ edge [style=dashed;dir=back];
+ mstb1 -> {port1, port2};
+ port1 -> mstb2;
+ port2 -> mstb3 -> port3;
+ edge [color=red];
+ mstb3 -> port4;
+ port3 -> mstb4;
+ }
+
+ mstb1 [label="MSTB #1";style=filled;fillcolor=palegreen];
+ mstb2 [label="MSTB #2";style=filled;fillcolor=palegreen];
+ mstb3 [label="MSTB #3";style=filled;fillcolor=palegreen];
+ mstb4 [label="MSTB #4";style=filled;fillcolor=grey];
+
+ port1 [label="Port #1"];
+ port2 [label="Port #2"];
+ port3 [label="Port #3"];
+ port4 [label="Port #4";style=filled;fillcolor=grey];
+
+ driver [label="DRM driver";style=filled;shape=box;fillcolor=lightblue];
+
+ payload1 [label="Payload #1";style=filled;shape=box;fillcolor=lightblue];
+ payload2 [label="Payload #2";style=filled;shape=box;fillcolor=lightblue];
+}
diff --git a/Documentation/gpu/dp-mst/topology-figure-3.dot b/Documentation/gpu/dp-mst/topology-figure-3.dot
new file mode 100644
index 000000000..6cd78d067
--- /dev/null
+++ b/Documentation/gpu/dp-mst/topology-figure-3.dot
@@ -0,0 +1,59 @@
+digraph T {
+ /* Make sure our payloads are always drawn below the driver node */
+ subgraph cluster_driver {
+ fillcolor = grey;
+ style = filled;
+ edge [dir=none];
+ driver -> payload1;
+ driver -> payload2 [penwidth=3];
+ edge [dir=""];
+ }
+
+ /* Driver malloc references */
+ edge [style=dashed];
+ driver -> port1;
+ driver -> port2;
+ driver -> port3:e;
+ driver -> port4 [color=grey];
+ payload1:s -> port1:e;
+ payload2:s -> port3:e [penwidth=3];
+ edge [style=""];
+
+ subgraph cluster_topology {
+ label="Topology Manager";
+ labelloc=bottom;
+
+ /* Topology references */
+ mstb1 -> {port1, port2};
+ port1 -> mstb2;
+ edge [color=grey];
+ port2 -> mstb3 -> {port3, port4};
+ port3 -> mstb4;
+ edge [color=""];
+
+ /* Malloc references */
+ edge [style=dashed;dir=back];
+ mstb1 -> {port1, port2};
+ port1 -> mstb2;
+ port2 -> mstb3 [penwidth=3];
+ mstb3 -> port3 [penwidth=3];
+ edge [color=grey];
+ mstb3 -> port4;
+ port3 -> mstb4;
+ }
+
+ mstb1 [label="MSTB #1";style=filled;fillcolor=palegreen];
+ mstb2 [label="MSTB #2";style=filled;fillcolor=palegreen];
+ mstb3 [label="MSTB #3";style=filled;fillcolor=palegreen;penwidth=3];
+ mstb4 [label="MSTB #4";style=filled;fillcolor=grey];
+
+ port1 [label="Port #1"];
+ port2 [label="Port #2";penwidth=5];
+ port3 [label="Port #3";penwidth=3];
+ port4 [label="Port #4";style=filled;fillcolor=grey];
+
+ driver [label="DRM driver";style=filled;shape=box;fillcolor=lightblue];
+
+ payload1 [label="Payload #1";style=filled;shape=box;fillcolor=lightblue];
+ payload2 [label="Payload #2";style=filled;shape=box;fillcolor=lightblue;penwidth=3];
+}