From: Eric Dumazet <edumazet@google.com>
To: Anna-Maria Behnsen <anna-maria@linutronix.de>,
Frederic Weisbecker <frederic@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel <linux-kernel@vger.kernel.org>,
Benjamin Segall <bsegall@google.com>,
Eric Dumazet <eric.dumazet@gmail.com>,
Eric Dumazet <edumazet@google.com>
Subject: [PATCH 0/2] posix-timers: Reduce spinlock contention
Date: Fri, 14 Feb 2025 13:59:09 +0000 [thread overview]
Message-ID: <20250214135911.2037402-1-edumazet@google.com> (raw)
We had incidents involving gazillions of concurrent posix timers.
Benjamin Segall is planning to add a cond_resched() in exit_itimers()
In this small series, I am reducing hash_lock contention in posix_timer_add()
Eric Dumazet (2):
posix-timers: Make next_posix_timer_id an atomic_t
posix-timers: Use RCU in posix_timer_add()
include/linux/sched/signal.h | 2 +-
kernel/time/posix-timers.c | 21 +++++++++++++++++----
2 files changed, 18 insertions(+), 5 deletions(-)
--
2.48.1.601.g30ceb7b040-goog
next reply other threads:[~2025-02-14 13:59 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-14 13:59 Eric Dumazet [this message]
2025-02-14 13:59 ` [PATCH 1/2] posix-timers: Make next_posix_timer_id an atomic_t Eric Dumazet
2025-02-14 13:59 ` [PATCH 2/2] posix-timers: Use RCU in posix_timer_add() Eric Dumazet
2025-02-14 16:59 ` David Laight
2025-02-14 17:48 ` Eric Dumazet
2025-02-17 19:25 ` Thomas Gleixner
2025-02-17 19:24 ` Thomas Gleixner
2025-02-18 14:16 ` Thomas Gleixner
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