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[23.118.52.46]) by smtp.gmail.com with ESMTPSA id m64sm3645640pga.55.2021.09.08.11.49.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 08 Sep 2021 11:49:11 -0700 (PDT) From: Peter Oskolkov X-Google-Original-From: Peter Oskolkov To: Peter Zijlstra , Ingo Molnar , Thomas Gleixner , linux-kernel@vger.kernel.org, linux-api@vger.kernel.org Cc: Paul Turner , Ben Segall , Peter Oskolkov , Peter Oskolkov , Andrei Vagin , Jann Horn , Thierry Delisle Subject: [PATCH 0/4 v0.5] sched/umcg: RFC UMCG patchset Date: Wed, 8 Sep 2021 11:49:01 -0700 Message-Id: <20210908184905.163787-1-posk@google.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-api@vger.kernel.org This is an update on v0.4: https://lore.kernel.org/lkml/20210801200617.623745-1-posk@google.com/ Key changes: v0.3 => v0.4: - made idle workers list logic simpler - only one idle server tracking - removed two fields from struct umcg_task - added timeout handling - added worker preemption - added a doc patch that now documents the syscalls and state transitions. v0.4 => v0.5: - refactored idle workers list management, as suggested by Thierry Delisle here: https://lore.kernel.org/lkml/3530714d-125b-e0f5-45b2-72695e2fc4ee@uwaterloo.ca/ I will now clean up libumcg (userspace) and selftests and post them in a follow-up patchset. Peter Oskolkov (4): sched/umcg: add WF_CURRENT_CPU and externise ttwu sched/umcg: RFC: add userspace atomic helpers sched/umcg: RFC: implement UMCG syscalls sched/umcg: add Documentation/userspace-api/umcg.rst Documentation/userspace-api/umcg.rst | 546 ++++++++++++++++++++++ arch/x86/entry/syscalls/syscall_64.tbl | 2 + include/linux/sched.h | 6 + include/linux/syscalls.h | 4 + include/uapi/asm-generic/unistd.h | 8 +- include/uapi/linux/umcg.h | 114 +++++ init/Kconfig | 10 + kernel/exit.c | 7 + kernel/sched/Makefile | 1 + kernel/sched/core.c | 20 +- kernel/sched/fair.c | 4 + kernel/sched/sched.h | 15 +- kernel/sched/umcg.c | 618 +++++++++++++++++++++++++ kernel/sched/umcg.h | 325 +++++++++++++ kernel/sys_ni.c | 4 + 15 files changed, 1673 insertions(+), 11 deletions(-) create mode 100644 Documentation/userspace-api/umcg.rst create mode 100644 include/uapi/linux/umcg.h create mode 100644 kernel/sched/umcg.c create mode 100644 kernel/sched/umcg.h -- 2.25.1