From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: Alexei Starovoitov <alexei.starovoitov@gmail.com>
Cc: bpf@vger.kernel.org, andrii@kernel.org, memxor@gmail.com,
akpm@linux-foundation.org, peterz@infradead.org, vbabka@suse.cz,
rostedt@goodmis.org, houtao1@huawei.com, hannes@cmpxchg.org,
shakeel.butt@linux.dev, mhocko@suse.com, willy@infradead.org,
tglx@linutronix.de, tj@kernel.org, linux-mm@kvack.org,
kernel-team@fb.com
Subject: Re: [PATCH bpf-next v2 3/6] locking/local_lock: Introduce local_trylock_irqsave()
Date: Thu, 12 Dec 2024 16:15:29 +0100 [thread overview]
Message-ID: <20241212151529.oPNxM6JC@linutronix.de> (raw)
In-Reply-To: <20241210023936.46871-4-alexei.starovoitov@gmail.com>
> diff --git a/include/linux/local_lock_internal.h b/include/linux/local_lock_internal.h
> index 8dd71fbbb6d2..2c0f8a49c2d0 100644
> --- a/include/linux/local_lock_internal.h
> +++ b/include/linux/local_lock_internal.h
> @@ -148,6 +163,14 @@ typedef spinlock_t local_lock_t;
> __local_lock(lock); \
> } while (0)
>
> +#define __local_trylock_irqsave(lock, flags) \
> + ({ \
> + typecheck(unsigned long, flags); \
> + flags = 0; \
> + migrate_disable(); \
> + spin_trylock(this_cpu_ptr((__lock))); \
You should probably do a migrate_enable() here if the trylock fails.
> + })
> +
> #define __local_unlock(__lock) \
> do { \
> spin_unlock(this_cpu_ptr((__lock))); \
Sebastian
next prev parent reply other threads:[~2024-12-12 15:15 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-12-10 2:39 [PATCH bpf-next v2 0/6] bpf, mm: Introduce __GFP_TRYLOCK Alexei Starovoitov
2024-12-10 2:39 ` [PATCH bpf-next v2 1/6] mm, bpf: Introduce __GFP_TRYLOCK for opportunistic page allocation Alexei Starovoitov
2024-12-10 5:31 ` Matthew Wilcox
2024-12-10 9:05 ` Michal Hocko
2024-12-10 20:25 ` Shakeel Butt
2024-12-11 10:08 ` Michal Hocko
2024-12-10 22:06 ` Alexei Starovoitov
2024-12-11 10:19 ` Michal Hocko
2024-12-12 15:07 ` Sebastian Sewior
2024-12-12 15:21 ` Michal Hocko
2024-12-12 15:35 ` Sebastian Sewior
2024-12-12 15:48 ` Steven Rostedt
2024-12-12 16:00 ` Sebastian Sewior
2024-12-13 17:44 ` Steven Rostedt
2024-12-13 18:44 ` Alexei Starovoitov
2024-12-13 18:57 ` Alexei Starovoitov
2024-12-13 20:09 ` Steven Rostedt
2024-12-13 21:00 ` Steven Rostedt
2024-12-13 22:02 ` Alexei Starovoitov
2024-12-12 21:57 ` Alexei Starovoitov
2024-12-10 21:42 ` Alexei Starovoitov
2024-12-10 9:01 ` Sebastian Andrzej Siewior
2024-12-10 21:53 ` Alexei Starovoitov
2024-12-11 8:38 ` Vlastimil Babka
2024-12-12 2:14 ` Alexei Starovoitov
2024-12-12 8:54 ` Vlastimil Babka
2024-12-10 18:39 ` Vlastimil Babka
2024-12-10 22:42 ` Alexei Starovoitov
2024-12-11 8:48 ` Vlastimil Babka
2024-12-10 2:39 ` [PATCH bpf-next v2 2/6] mm, bpf: Introduce free_pages_nolock() Alexei Starovoitov
2024-12-10 8:35 ` Sebastian Andrzej Siewior
2024-12-10 22:49 ` Alexei Starovoitov
2024-12-12 14:44 ` Sebastian Andrzej Siewior
2024-12-12 19:57 ` Alexei Starovoitov
2024-12-11 10:11 ` Vlastimil Babka
2024-12-12 1:43 ` Alexei Starovoitov
2024-12-10 2:39 ` [PATCH bpf-next v2 3/6] locking/local_lock: Introduce local_trylock_irqsave() Alexei Starovoitov
2024-12-11 10:53 ` Vlastimil Babka
2024-12-11 11:55 ` Vlastimil Babka
2024-12-12 2:49 ` Alexei Starovoitov
2024-12-12 9:15 ` Vlastimil Babka
2024-12-13 14:02 ` Vlastimil Babka
2024-12-12 15:15 ` Sebastian Andrzej Siewior [this message]
2024-12-12 19:59 ` Alexei Starovoitov
2024-12-10 2:39 ` [PATCH bpf-next v2 4/6] memcg: Add __GFP_TRYLOCK support Alexei Starovoitov
2024-12-11 23:47 ` kernel test robot
2024-12-10 2:39 ` [PATCH bpf-next v2 5/6] mm, bpf: Use __GFP_ACCOUNT in try_alloc_pages() Alexei Starovoitov
2024-12-11 12:05 ` Vlastimil Babka
2024-12-12 2:54 ` Alexei Starovoitov
2024-12-10 2:39 ` [PATCH bpf-next v2 6/6] bpf: Use try_alloc_pages() to allocate pages for bpf needs Alexei Starovoitov
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