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authorPaul E. McKenney <paulmck@kernel.org>2024-05-29 19:53:59 +0200
committerPaul E. McKenney <paulmck@kernel.org>2024-06-06 20:23:35 +0200
commit1e029b73b7d1d8684e52961a7ecf74770d16651b (patch)
tree900b45f648c96e1b3c68058947f3ecb4163175eb /tools/memory-model
parentLinux 6.10-rc1 (diff)
downloadlinux-1e029b73b7d1d8684e52961a7ecf74770d16651b.tar.xz
linux-1e029b73b7d1d8684e52961a7ecf74770d16651b.zip
tools/memory-model: Add KCSAN LF mentorship session citation
Add a citation to Marco's LF mentorship session presentation entitled "The Kernel Concurrency Sanitizer" [ paulmck: Apply Marco Elver feedback. ] Reported-by: Marco Elver <elver@google.com> Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Acked-by: Andrea Parri <parri.andrea@gmail.com> Reviewed-by: Akira Yokosawa <akiyks@gmail.com> Acked-by: Marco Elver <elver@google.com> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Will Deacon <will@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: David Howells <dhowells@redhat.com> Cc: Jade Alglave <j.alglave@ucl.ac.uk> Cc: Luc Maranget <luc.maranget@inria.fr> Cc: Daniel Lustig <dlustig@nvidia.com> Cc: Joel Fernandes <joel@joelfernandes.org> Cc: <linux-arch@vger.kernel.org>
Diffstat (limited to 'tools/memory-model')
-rw-r--r--tools/memory-model/Documentation/access-marking.txt10
1 files changed, 7 insertions, 3 deletions
diff --git a/tools/memory-model/Documentation/access-marking.txt b/tools/memory-model/Documentation/access-marking.txt
index 65778222183e..f531b0837356 100644
--- a/tools/memory-model/Documentation/access-marking.txt
+++ b/tools/memory-model/Documentation/access-marking.txt
@@ -6,7 +6,8 @@ normal accesses to shared memory, that is "normal" as in accesses that do
not use read-modify-write atomic operations. It also describes how to
document these accesses, both with comments and with special assertions
processed by the Kernel Concurrency Sanitizer (KCSAN). This discussion
-builds on an earlier LWN article [1].
+builds on an earlier LWN article [1] and Linux Foundation mentorship
+session [2].
ACCESS-MARKING OPTIONS
@@ -31,7 +32,7 @@ example:
WRITE_ONCE(a, b + data_race(c + d) + READ_ONCE(e));
Neither plain C-language accesses nor data_race() (#1 and #2 above) place
-any sort of constraint on the compiler's choice of optimizations [2].
+any sort of constraint on the compiler's choice of optimizations [3].
In contrast, READ_ONCE() and WRITE_ONCE() (#3 and #4 above) restrict the
compiler's use of code-motion and common-subexpression optimizations.
Therefore, if a given access is involved in an intentional data race,
@@ -594,5 +595,8 @@ REFERENCES
[1] "Concurrency bugs should fear the big bad data-race detector (part 2)"
https://lwn.net/Articles/816854/
-[2] "Who's afraid of a big bad optimizing compiler?"
+[2] "The Kernel Concurrency Sanitizer"
+ https://www.linuxfoundation.org/webinars/the-kernel-concurrency-sanitizer
+
+[3] "Who's afraid of a big bad optimizing compiler?"
https://lwn.net/Articles/793253/