From: Peter Oskolkov <posk@posk.io>
To: Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
Andrew Morton <akpm@linux-foundation.org>,
Dave Hansen <dave.hansen@linux.intel.com>,
Andy Lutomirski <luto@kernel.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
linux-api@vger.kernel.org
Cc: Paul Turner <pjt@google.com>, Ben Segall <bsegall@google.com>,
Peter Oskolkov <posk@google.com>, Peter Oskolkov <posk@posk.io>,
Andrei Vagin <avagin@google.com>, Jann Horn <jannh@google.com>,
Thierry Delisle <tdelisle@uwaterloo.ca>
Subject: [PATCH v0.7 0/5] sched,mm,x86/uaccess: implement User Managed Concurrency Groups
Date: Tue, 12 Oct 2021 16:25:17 -0700 [thread overview]
Message-ID: <20211012232522.714898-1-posk@google.com> (raw)
User Managed Concurrency Groups (UMCG) is an M:N threading
subsystem/toolkit that lets user space application developers implement
in-process user space schedulers.
Key changes from the previous patchset
https://lore.kernel.org/all/20210917180323.278250-1-posk@google.com/ :
- userspace atomic helpers moved into mm/
- UMCG task states are now tagged with timestamps
- cross-mm interactions (wakeups) are not permitted
- several smaller fixes and refactorings
These big things remain to be addressed (in no particular order):
- support tracing/debugging
- make context switches faster (see umcg_do_context_switch in umcg.c)
- support other architectures
- cleanup and post userspace support in tools/lib/umcg/
- cleanup and post selftests in tools/testing/selftests/umcg/
- allow cross-mm wakeups (securely)
I'm working on finalizing libumcg and kselftests.
Signed-off-by: Peter Oskolkov <posk@google.com>
Peter Oskolkov (5):
sched/umcg: add WF_CURRENT_CPU and externise ttwu
mm, x86/uaccess: add userspace atomic helpers
sched/umcg: implement UMCG syscalls
sched/umcg: add Documentation/userspace-api/umcg.rst
sched/umcg: add Documentation/userspace-api/umcg.txt
Documentation/userspace-api/umcg.rst | 611 ++++++++++++++++
Documentation/userspace-api/umcg.txt | 594 ++++++++++++++++
arch/x86/entry/syscalls/syscall_64.tbl | 2 +
arch/x86/include/asm/uaccess_64.h | 93 +++
fs/exec.c | 1 +
include/linux/sched.h | 71 ++
include/linux/syscalls.h | 3 +
include/linux/uaccess.h | 46 ++
include/uapi/asm-generic/unistd.h | 6 +-
include/uapi/linux/umcg.h | 137 ++++
init/Kconfig | 10 +
kernel/entry/common.c | 4 +-
kernel/exit.c | 5 +
kernel/sched/Makefile | 1 +
kernel/sched/core.c | 12 +-
kernel/sched/fair.c | 4 +
kernel/sched/sched.h | 15 +-
kernel/sched/umcg.c | 926 +++++++++++++++++++++++++
kernel/sys_ni.c | 4 +
mm/maccess.c | 264 +++++++
20 files changed, 2797 insertions(+), 12 deletions(-)
create mode 100644 Documentation/userspace-api/umcg.rst
create mode 100644 Documentation/userspace-api/umcg.txt
create mode 100644 include/uapi/linux/umcg.h
create mode 100644 kernel/sched/umcg.c
--
2.25.1
next reply other threads:[~2021-10-12 23:25 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-12 23:25 Peter Oskolkov [this message]
2021-10-12 23:25 ` [PATCH v0.7 1/5] sched/umcg: add WF_CURRENT_CPU and externise ttwu Peter Oskolkov
2021-10-12 23:25 ` [PATCH v0.7 2/5] mm, x86/uaccess: add userspace atomic helpers Peter Oskolkov
2021-10-26 23:21 ` Peter Oskolkov
2021-10-12 23:25 ` [PATCH v0.7 3/5] sched/umcg: implement UMCG syscalls Peter Oskolkov
2021-10-13 19:43 ` kernel test robot
2021-10-13 21:47 ` kernel test robot
2021-10-15 21:40 ` kernel test robot
2021-10-18 15:23 ` Tao Zhou
2021-10-12 23:25 ` [PATCH v0.7 4/5] sched/umcg: add Documentation/userspace-api/umcg.rst Peter Oskolkov
2021-10-12 23:25 ` [PATCH v0.7 5/5] sched/umcg: add Documentation/userspace-api/umcg.txt Peter Oskolkov
2021-10-18 14:50 ` Tao Zhou
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