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Message-Id: <20220819204857.3066329-1-joel@joelfernandes.org>
Date: Fri, 19 Aug 2022 20:48:43 +0000
From: "Joel Fernandes (Google)" <joel@...lfernandes.org>
To: linux-kernel@...r.kernel.org
Cc: "Joel Fernandes (Google)" <joel@...lfernandes.org>,
paulmck@...nel.org,
Rushikesh S Kadam <rushikesh.s.kadam@...el.com>,
"Uladzislau Rezki (Sony)" <urezki@...il.com>,
Neeraj upadhyay <neeraj.iitr10@...il.com>,
Frederic Weisbecker <frederic@...nel.org>,
Steven Rostedt <rostedt@...dmis.org>,
rcu <rcu@...r.kernel.org>, vineeth@...byteword.org
Subject: [PATCH v4 00/14] Implement call_rcu_lazy() and miscellaneous fixes
Refresh tested on real ChromeOS userspace and hardware, passes boot time tests
and rcuscale tests.
Fixes on top of v3:
- Fix boot issues due to a race in the lazy RCU logic which caused a missed
wakeup of the RCU GP thread, causing synchronize_rcu() to stall.
- Fixed trace_rcu_callback tracepoint
I tested power previously [1], I am in the process of testing power again but I
wanted share my latest code as others who are testing power as well could use
the above fixes.
[1] https://lore.kernel.org/all/20220713213237.1596225-1-joel@joelfernandes.org/
Joel Fernandes (Google) (13):
rcu: Introduce call_rcu_lazy() API implementation
rcuscale: Add laziness and kfree tests
fs: Move call_rcu() to call_rcu_lazy() in some paths
rcutorture: Add test code for call_rcu_lazy()
debug: Toggle lazy at runtime and change flush jiffies
cred: Move call_rcu() to call_rcu_lazy()
security: Move call_rcu() to call_rcu_lazy()
net/core: Move call_rcu() to call_rcu_lazy()
kernel: Move various core kernel usages to call_rcu_lazy()
lib: Move call_rcu() to call_rcu_lazy()
i915: Move call_rcu() to call_rcu_lazy()
fork: Move thread_stack_free_rcu to call_rcu_lazy
rcu/tree: Move trace_rcu_callback() before bypassing
Vineeth Pillai (1):
rcu: shrinker for lazy rcu
drivers/gpu/drm/i915/gem/i915_gem_object.c | 2 +-
fs/dcache.c | 4 +-
fs/eventpoll.c | 2 +-
fs/file_table.c | 2 +-
fs/inode.c | 2 +-
include/linux/rcu_segcblist.h | 1 +
include/linux/rcupdate.h | 6 +
include/linux/sched/sysctl.h | 3 +
kernel/cred.c | 2 +-
kernel/exit.c | 2 +-
kernel/fork.c | 6 +-
kernel/pid.c | 2 +-
kernel/rcu/Kconfig | 8 +
kernel/rcu/rcu.h | 12 +
kernel/rcu/rcu_segcblist.c | 15 +-
kernel/rcu/rcu_segcblist.h | 20 +-
kernel/rcu/rcuscale.c | 74 ++++-
kernel/rcu/rcutorture.c | 60 +++-
kernel/rcu/tree.c | 139 ++++++----
kernel/rcu/tree.h | 10 +-
kernel/rcu/tree_nocb.h | 260 +++++++++++++++---
kernel/sysctl.c | 17 ++
kernel/time/posix-timers.c | 2 +-
lib/radix-tree.c | 2 +-
lib/xarray.c | 2 +-
net/core/dst.c | 2 +-
security/security.c | 2 +-
security/selinux/avc.c | 4 +-
.../selftests/rcutorture/configs/rcu/CFLIST | 1 +
.../selftests/rcutorture/configs/rcu/TREE11 | 18 ++
.../rcutorture/configs/rcu/TREE11.boot | 8 +
31 files changed, 567 insertions(+), 123 deletions(-)
create mode 100644 tools/testing/selftests/rcutorture/configs/rcu/TREE11
create mode 100644 tools/testing/selftests/rcutorture/configs/rcu/TREE11.boot
--
2.37.2.609.g9ff673ca1a-goog
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