From: Marta Rybczynska <rybczynska@gmail.com>
To: Alex Belits <abelits@marvell.com>
Cc: "frederic@kernel.org" <frederic@kernel.org>,
"rostedt@goodmis.org" <rostedt@goodmis.org>,
"mingo@kernel.org" <mingo@kernel.org>,
"peterz@infradead.org" <peterz@infradead.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Prasun Kapoor <pkapoor@marvell.com>,
"tglx@linutronix.de" <tglx@linutronix.de>,
"linux-api@vger.kernel.org" <linux-api@vger.kernel.org>,
"catalin.marinas@arm.com" <catalin.marinas@arm.com>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"davem@davemloft.net" <davem@davemloft.net>,
"linux-arch@vger.kernel.org" <linux-arch@vger.kernel.org>,
"will@kernel.org" <will@kernel.org>
Subject: Re: [PATCH v2 03/12] task_isolation: userspace hard isolation from kernel
Date: Fri, 27 Mar 2020 09:42:55 +0100 [thread overview]
Message-ID: <CAApg2=ThxqOj8a2uZbRVgXZFjHWHk9g_xY3eseobQWwHLxiREg@mail.gmail.com> (raw)
In-Reply-To: <105f17f25e90a9a58299a7ed644bdd0f36434c87.camel@marvell.com>
On Sun, Mar 8, 2020 at 4:48 AM Alex Belits <abelits@marvell.com> wrote:
> +/* Enable task_isolation mode for TASK_ISOLATION kernels. */
> +#define PR_TASK_ISOLATION 48
> +# define PR_TASK_ISOLATION_ENABLE (1 << 0)
> +# define PR_TASK_ISOLATION_SET_SIG(sig) (((sig) & 0x7f) << 8)
> +# define PR_TASK_ISOLATION_GET_SIG(bits) (((bits) >> 8) & 0x7f)
> +
Thank you for resurrecting this code!
I have a question on the UAPI: the example code is using
PR_TASK_ISOLATION_USERSIG and it seems to be removed from this
version.
To enable isolation with SIGUSR1 the task should run:
prctl(PR_SET_TASK_ISOLATION, PR_TASK_ISOLATION_ENABLE
| PR_TASK_ISOLATION_SET_SIG(SIGUSR1), 0, 0, 0);
And to disable:
prctl(PR_SET_TASK_ISOLATION, 0, 0, 0, 0);
Is this correct?
Marta
next prev parent reply other threads:[~2020-03-27 8:42 UTC|newest]
Thread overview: 113+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-04 16:01 [PATCH 00/12] "Task_isolation" mode Alex Belits
[not found] ` <4473787e1b6bc3cc226067e8d122092a678b63de.camel-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org>
2020-03-04 16:03 ` [PATCH 01/12] task_isolation: vmstat: add quiet_vmstat_sync function Alex Belits
2020-03-04 16:03 ` Alex Belits
2020-03-04 16:04 ` [PATCH 02/12] task_isolation: vmstat: add vmstat_idle function Alex Belits
2020-03-04 16:04 ` Alex Belits
2020-03-04 16:08 ` [PATCH 04/12] task_isolation: Add task isolation hooks to arch-independent code Alex Belits
2020-03-04 16:08 ` Alex Belits
2020-03-04 16:10 ` [PATCH 06/12] task_isolation: arch/arm64: enable task isolation functionality Alex Belits
2020-03-04 16:10 ` Alex Belits
2020-03-04 16:31 ` Mark Rutland
2020-03-08 4:48 ` [EXT] " Alex Belits
2020-03-08 4:48 ` Alex Belits
2020-03-04 16:11 ` [PATCH 07/12] task_isolation: arch/arm: " Alex Belits
2020-03-04 16:11 ` Alex Belits
2020-03-04 16:12 ` [PATCH 08/12] task_isolation: don't interrupt CPUs with tick_nohz_full_kick_cpu() Alex Belits
2020-03-04 16:12 ` Alex Belits
[not found] ` <d7ce01e57d4a35b126e1cb96a63109eaa9781cb6.camel-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org>
2020-03-06 16:03 ` Frederic Weisbecker
2020-03-06 16:03 ` Frederic Weisbecker
2020-03-08 7:28 ` [EXT] " Alex Belits
2020-03-08 7:28 ` Alex Belits
[not found] ` <646a22fd24e8dfeb1eb3101ae7be2b88e91dbfa3.camel-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org>
2020-03-09 2:38 ` Frederic Weisbecker
2020-03-09 2:38 ` Frederic Weisbecker
2020-03-04 16:16 ` [PATCH 12/12] task_isolation: CONFIG_TASK_ISOLATION prevents distribution of jobs to non-housekeeping CPUs Alex Belits
2020-03-04 16:16 ` Alex Belits
2020-03-04 16:07 ` [PATCH 03/12] task_isolation: userspace hard isolation from kernel Alex Belits
2020-03-05 18:33 ` Frederic Weisbecker
2020-03-08 5:32 ` [EXT] " Alex Belits
2020-04-28 14:12 ` Marcelo Tosatti
2020-04-28 14:12 ` Marcelo Tosatti
2020-03-06 15:26 ` Frederic Weisbecker
2020-03-08 6:06 ` [EXT] " Alex Belits
2020-03-06 16:00 ` Frederic Weisbecker
2020-03-08 7:16 ` [EXT] " Alex Belits
2020-03-08 7:16 ` Alex Belits
2020-03-04 16:09 ` [PATCH 05/12] task_isolation: arch/x86: enable task isolation functionality Alex Belits
2020-03-04 16:13 ` [PATCH 09/12] task_isolation: net: don't flush backlog on CPUs running isolated tasks Alex Belits
2020-03-04 16:14 ` [PATCH 10/12] task_isolation: ringbuffer: don't interrupt CPUs running isolated tasks on buffer resize Alex Belits
2020-03-04 16:14 ` Alex Belits
2020-03-04 16:15 ` [PATCH 11/12] task_isolation: kick_all_cpus_sync: don't kick isolated cpus Alex Belits
[not found] ` <dfa5e0e9f34e6ff0ef048c81bc70496354f31300.camel-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org>
2020-03-06 15:34 ` Frederic Weisbecker
2020-03-06 15:34 ` Frederic Weisbecker
2020-03-08 6:48 ` [EXT] " Alex Belits
2020-03-08 6:48 ` Alex Belits
2020-03-09 2:28 ` Frederic Weisbecker
2020-03-09 2:28 ` Frederic Weisbecker
2020-03-08 3:42 ` [PATCH v2 00/12] "Task_isolation" mode Alex Belits
2020-03-08 3:44 ` [PATCH v2 01/12] task_isolation: vmstat: add quiet_vmstat_sync function Alex Belits
2020-03-08 3:44 ` Alex Belits
2020-03-08 3:46 ` [PATCH v2 02/12] task_isolation: vmstat: add vmstat_idle function Alex Belits
2020-03-08 3:47 ` [PATCH v2 03/12] task_isolation: userspace hard isolation from kernel Alex Belits
2020-03-08 3:47 ` Alex Belits
[not found] ` <20200307214254.7a8f6c22@hermes.lan>
2020-03-08 7:33 ` [EXT] " Alex Belits
2020-03-08 7:33 ` Alex Belits
2020-03-27 8:42 ` Marta Rybczynska [this message]
2020-03-27 8:42 ` Marta Rybczynska
2020-04-06 4:31 ` Kevyn-Alexandre Paré
[not found] ` <105f17f25e90a9a58299a7ed644bdd0f36434c87.camel-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org>
2020-04-06 4:43 ` Kevyn-Alexandre Paré
2020-04-06 4:43 ` Kevyn-Alexandre Paré
[not found] ` <aed12dd15ea2981bc9554cfa8b5e273c1342c756.camel-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org>
2020-03-08 3:48 ` [PATCH v2 04/12] task_isolation: Add task isolation hooks to arch-independent code Alex Belits
2020-03-08 3:48 ` Alex Belits
2020-03-08 3:50 ` [PATCH v2 06/12] task_isolation: arch/arm64: enable task isolation functionality Alex Belits
2020-03-08 3:50 ` Alex Belits
2020-03-09 16:59 ` Mark Rutland
2020-03-09 16:59 ` Mark Rutland
2020-03-08 3:53 ` [PATCH v2 08/12] task_isolation: don't interrupt CPUs with tick_nohz_full_kick_cpu() Alex Belits
2020-03-08 3:53 ` Alex Belits
2020-03-08 3:54 ` [PATCH v2 09/12] task_isolation: net: don't flush backlog on CPUs running isolated tasks Alex Belits
2020-03-08 3:54 ` Alex Belits
2020-03-08 3:49 ` [PATCH v2 05/12] task_isolation: arch/x86: enable task isolation functionality Alex Belits
2020-03-08 3:52 ` [PATCH v2 07/12] task_isolation: arch/arm: " Alex Belits
2020-03-08 3:55 ` [PATCH v2 10/12] task_isolation: ringbuffer: don't interrupt CPUs running isolated tasks on buffer resize Alex Belits
2020-04-06 4:27 ` Kevyn-Alexandre Paré
2020-04-06 4:27 ` Kevyn-Alexandre Paré
2020-03-08 3:56 ` [PATCH v2 11/12] task_isolation: kick_all_cpus_sync: don't kick isolated cpus Alex Belits
2020-03-08 3:57 ` [PATCH v2 12/12] task_isolation: CONFIG_TASK_ISOLATION prevents distribution of jobs to non-housekeeping CPUs Alex Belits
2020-04-09 15:09 ` [PATCH v3 00/13] "Task_isolation" mode Alex Belits
2020-04-09 15:15 ` [PATCH 01/13] task_isolation: vmstat: add quiet_vmstat_sync function Alex Belits
2020-04-09 15:16 ` [PATCH 02/13] task_isolation: vmstat: add vmstat_idle function Alex Belits
2020-04-09 15:20 ` [PATCH v3 04/13] task_isolation: userspace hard isolation from kernel Alex Belits
2020-04-09 15:20 ` Alex Belits
2020-04-09 18:00 ` Andy Lutomirski
2020-04-19 5:07 ` Alex Belits
2020-04-19 5:07 ` Alex Belits
2020-04-09 15:21 ` [PATCH 05/13] task_isolation: Add task isolation hooks to arch-independent code Alex Belits
2020-04-09 15:21 ` Alex Belits
2020-04-09 15:22 ` [PATCH 06/13] task_isolation: arch/x86: enable task isolation functionality Alex Belits
2020-04-09 15:22 ` Alex Belits
2020-04-09 15:23 ` [PATCH v3 07/13] task_isolation: arch/arm64: " Alex Belits
2020-04-22 12:08 ` Catalin Marinas
2020-04-09 15:24 ` [PATCH v3 08/13] task_isolation: arch/arm: " Alex Belits
2020-04-09 15:24 ` Alex Belits
2020-04-09 15:25 ` [PATCH v3 09/13] task_isolation: don't interrupt CPUs with tick_nohz_full_kick_cpu() Alex Belits
2020-04-09 15:25 ` Alex Belits
2020-04-09 15:26 ` [PATCH v3 10/13] task_isolation: net: don't flush backlog on CPUs running isolated tasks Alex Belits
2020-04-09 15:26 ` Alex Belits
2020-04-09 15:27 ` [PATCH v3 11/13] task_isolation: ringbuffer: don't interrupt CPUs running isolated tasks on buffer resize Alex Belits
[not found] ` <07c25c246c55012981ec0296eee23e68c719333a.camel-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org>
2020-04-09 15:17 ` [PATCH v3 03/13] task_isolation: add instruction synchronization memory barrier Alex Belits
2020-04-09 15:17 ` Alex Belits
2020-04-15 12:44 ` Mark Rutland
[not found] ` <20200415124427.GB28304-NxAhncQ8SJbILnBEAk/BfazUEOm+Xw19@public.gmane.org>
2020-04-19 5:02 ` [EXT] " Alex Belits
2020-04-19 5:02 ` Alex Belits
2020-04-20 12:23 ` Will Deacon
2020-04-20 12:23 ` Will Deacon
2020-04-20 12:36 ` Mark Rutland
2020-04-20 12:36 ` Mark Rutland
[not found] ` <20200420123628.GB69441-NxAhncQ8SJbILnBEAk/BfazUEOm+Xw19@public.gmane.org>
2020-04-20 13:55 ` Will Deacon
2020-04-20 13:55 ` Will Deacon
2020-04-21 7:41 ` Will Deacon
2020-04-20 12:45 ` Mark Rutland
2020-04-09 15:27 ` [PATCH v3 12/13] task_isolation: kick_all_cpus_sync: don't kick isolated cpus Alex Belits
2020-04-09 15:27 ` Alex Belits
2020-04-09 15:28 ` [PATCH v3 13/13] task_isolation: CONFIG_TASK_ISOLATION prevents distribution of jobs to non-housekeeping CPUs Alex Belits
2020-04-09 15:28 ` Alex Belits
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