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[192.26.29.3]) by smtp.gmail.com with UTF8SMTPSA id 5b1f17b1804b1-4771906714dsm47146135e9.13.2025.10.29.11.18.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Oct 2025 11:18:33 -0700 (PDT) From: Kumar Kartikeya Dwivedi To: bpf@vger.kernel.org Cc: Alexei Starovoitov , Andrii Nakryiko , Daniel Borkmann , Martin KaFai Lau , Eduard Zingerman , kkd@meta.com, kernel-team@meta.com Subject: [PATCH bpf-next v1 0/2] Misc rqspinlock updates Date: Wed, 29 Oct 2025 18:18:26 +0000 Message-ID: <20251029181828.231529-1-memxor@gmail.com> X-Mailer: git-send-email 2.51.0 Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=779; i=memxor@gmail.com; h=from:subject; bh=aTeVF3oOGj0e3xvPkSu3ZWajjuStq46hmtcGfisJdvg=; b=owEBbQKS/ZANAwAKAUzgyIZIvxHKAcsmYgBpAlY4xkCnjwNej2Iez7UGK3YbeUBnmAA3HI3Zz OJ9SD1yBrqJAjMEAAEKAB0WIQRLvip+Buz51YI8YRFM4MiGSL8RygUCaQJWOAAKCRBM4MiGSL8R ygr5D/4jNsDLCE0BlJXS3MUMlcjPjL+5RK00HStX/BJKToGZpj7BCrWy1rLztENBVNkPHATCxWk zCs6qhI3GAEjix1DRGb0nu3Z0vtjNgULDEPXh1CtTIcJ/in6vZSSDXdUoxAnlVA977rfTJu7a1x ojH4e9zjxC+iwwjQYQDIw/j5o1bsZCbPz85cNH5YXkp0su/1XejbqvQcLk1XqUge350KgIPcJzM nlIMt+jHpfGAadKuYr/uQjqYbaLodoco0Qg8Iu+5hTzcMiWSVe+XGLaG19DaH0VttVjohO/om1F /u7g3oHRL9NNU63tWjLMec9KHIXAwjIg/gwrUiHIkxWqLmj+K1bR7iTBBCIX9IYnIcRdEJnbdX3 CBMEbNnIUyf3Jv+3N/4/czGdTJXskIDPirlCpYK1AttYgwoqySyGqsA9XCpSapF4CX3LO1IsX9Z XeE9SGnvVd1ugAlUAco3Z83qkRmW1lBfFT2LUgQw7qWHdtZ/1keP1az7IRZXag3ozI7fiZs4x7j cRncwKaloU01dOBHsIsBLG0Q+RpWQgDkYV9csAMI5oNoHtdsblHj/Md2Fvo0eF/KFm9YvRO/Lqk 83cslWVti+VsoHCkPfnyahGK8M6rOlYcJrVJw1QWyQ0bm8QoIJAG/xkwopR1tZ+ufA38UCVYzM5 K35WN0F+k29skqA== X-Developer-Key: i=memxor@gmail.com; a=openpgp; fpr=4BBE2A7E06ECF9D5823C61114CE0C88648BF11CA Content-Transfer-Encoding: 8bit A couple of changes for rqspinlock, the first disables propagation of AA and ABBA deadlocks to waiters succeeding the deadlocking waiter. A more verbose rationale is available in the commit log. The second commit expands the stress test to introduce a ABBCCA mode that will reliably exercise the timeout fallback. Kumar Kartikeya Dwivedi (2): rqspinlock: Disable queue destruction for deadlocks selftests/bpf: Add ABBCCA case for rqspinlock stress test kernel/bpf/rqspinlock.c | 8 ++ .../selftests/bpf/prog_tests/res_spin_lock.c | 8 +- .../bpf/test_kmods/bpf_test_rqspinlock.c | 85 ++++++++++++++----- 3 files changed, 74 insertions(+), 27 deletions(-) base-commit: 54c134f379ee2816f60130d44e0e386c261dff45 -- 2.51.0