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From: Gabriel Krisman Bertazi <krisman@collabora.com>
To: "André Almeida" <andrealmeid@collabora.com>
Cc: Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Darren Hart <dvhart@infradead.org>,
	linux-kernel@vger.kernel.org,
	Steven Rostedt <rostedt@goodmis.org>,
	Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
	kernel@collabora.com, pgriffais@valvesoftware.com,
	z.figura12@gmail.com, joel@joelfernandes.org,
	malteskarupke@fastmail.fm, linux-api@vger.kernel.org,
	fweimer@redhat.com, libc-alpha@sourceware.org,
	linux-kselftest@vger.kernel.org, shuah@kernel.org,
	acme@kernel.org, corbet@lwn.net
Subject: Re: [RFC PATCH 03/13] futex2: Implement vectorized wait
Date: Mon, 15 Feb 2021 15:08:11 -0500	[thread overview]
Message-ID: <87a6s5w0us.fsf@collabora.com> (raw)
In-Reply-To: <20210215152404.250281-4-andrealmeid@collabora.com> (=?utf-8?Q?=22Andr=C3=A9?= Almeida"'s message of "Mon, 15 Feb 2021 12:23:54 -0300")

André Almeida <andrealmeid@collabora.com> writes:

> Add support to wait on multiple futexes. This is the interface
> implemented by this syscall:
>
> futex_waitv(struct futex_waitv *waiters, unsigned int nr_futexes,
> 	    unsigned int flags, struct timespec *timo)

Sorry for the second email in a row.  But, if futex_wake is just a
futex_wakev with nr_futexes == 1, why do we need two syscalls for that?
Why not only have futex_waitv?


-- 
Gabriel Krisman Bertazi

  parent reply	other threads:[~2021-02-15 20:09 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-15 15:23 [RFC PATCH 00/13] Add futex2 syscalls André Almeida
2021-02-15 15:23 ` [RFC PATCH 01/13] futex2: Implement wait and wake functions André Almeida
2021-02-15 19:59   ` Gabriel Krisman Bertazi
2021-02-18 13:29     ` André Almeida
2021-02-18 15:48       ` Gabriel Krisman Bertazi
2021-02-16  9:02   ` Peter Zijlstra
2021-02-18 20:09     ` André Almeida
2021-02-16  9:35   ` Peter Zijlstra
2021-02-16  9:56   ` Peter Zijlstra
2021-02-16 10:20     ` Sebastian Andrzej Siewior
2021-02-16 12:42       ` Peter Zijlstra
2021-02-16 22:12     ` Gabriel Krisman Bertazi
2021-02-15 15:23 ` [RFC PATCH 02/13] futex2: Add support for shared futexes André Almeida
2021-02-16  4:32   ` kernel test robot
2021-02-15 15:23 ` [RFC PATCH 03/13] futex2: Implement vectorized wait André Almeida
2021-02-15 16:30   ` kernel test robot
2021-02-15 17:15   ` kernel test robot
2021-02-15 20:03   ` Gabriel Krisman Bertazi
2021-02-15 20:06     ` Zebediah Figura
2021-02-15 20:08   ` Gabriel Krisman Bertazi [this message]
2021-02-15 15:23 ` [RFC PATCH 04/13] futex2: Implement requeue operation André Almeida
2021-02-15 16:31   ` kernel test robot
2021-02-15 17:28   ` kernel test robot
2021-02-15 17:33   ` kernel test robot
2021-02-15 15:23 ` [RFC PATCH 05/13] futex2: Add compatibility entry point for x86_x32 ABI André Almeida
2021-02-16 20:19   ` kernel test robot
2021-02-15 15:23 ` [RFC PATCH 06/13] docs: locking: futex2: Add documentation André Almeida
2021-02-16 18:34   ` Randy Dunlap
2021-02-18 19:12     ` André Almeida
2021-02-15 15:23 ` [RFC PATCH 07/13] selftests: futex2: Add wake/wait test André Almeida
2021-02-15 15:23 ` [RFC PATCH 08/13] selftests: futex2: Add timeout test André Almeida
2021-02-15 15:24 ` [RFC PATCH 09/13] selftests: futex2: Add wouldblock test André Almeida
2021-02-15 15:24 ` [RFC PATCH 10/13] selftests: futex2: Add waitv test André Almeida
2021-02-15 15:24 ` [RFC PATCH 11/13] selftests: futex2: Add requeue test André Almeida
2021-02-15 15:24 ` [RFC PATCH 12/13] perf bench: Add futex2 benchmark tests André Almeida
2021-02-15 15:24 ` [RFC PATCH 13/13] kernel: Enable waitpid() for futex2 André Almeida

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