[PATCH v2 0/2] Some enhancement for kvfree_rcu_mightsleep()

From: Uladzislau Rezki (Sony)
Date: Wed Sep 04 2024 - 10:39:52 EST


This is v2. This small change tends to improve even more the slow path
of kvfree_rcu_mightsleep() API. It is hit when a low memory condition
occurs which leads us into two options:
a) check if a GP is already passed for freed object;
b) if not, initialize and wait for completion of a new GP.

The differecne between v1 -> v2:
- Drop "Support dynamic rcu_head for single argument objects" patch;
- Use cond_synchronize_rcu_full() in a slow path.

Uladzislau Rezki (Sony) (2):
rcu/kvfree: Use polled API in a slow path
rcu/kvfree: Switch to expedited version in slow path

kernel/rcu/tree.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)

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2.39.2