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* [PATCH v4 00/13] "Task_isolation" mode
@ 2020-07-22 14:44 Alex Belits
  2020-07-22 14:48 ` [PATCH v4 02/13] task_isolation: vmstat: add vmstat_idle function Alex Belits
                   ` (8 more replies)
  0 siblings, 9 replies; 65+ messages in thread
From: Alex Belits @ 2020-07-22 14:44 UTC (permalink / raw)
  To: frederic, rostedt
  Cc: Prasun Kapoor, mingo, davem, linux-api, peterz, linux-arch,
	catalin.marinas, tglx, will, linux-arm-kernel, linux-kernel,
	netdev

This is a new version of task isolation implementation. Previous version is at
https://lore.kernel.org/lkml/07c25c246c55012981ec0296eee23e68c719333a.camel@marvell.com/

Mostly this covers race conditions prevention on breaking isolation. Early after kernel entry,
task_isolation_enter() is called to update flags visible to other CPU cores and to perform
synchronization if necessary. Before this call only "safe" operations happen, as long as
CONFIG_TRACE_IRQFLAGS is not enabled.

This is also intended for future TLB handling -- the idea is to also isolate those CPU cores from
TLB flushes while they are running isolated task in userspace, and do one flush on exiting, before
any code is called that may touch anything updated.

The functionality and interface is unchanged, except for /sys/devices/system/cpu/isolation_running
containing the list of CPUs running isolated tasks. This should be useful for userspace helper
libraries.

^ permalink raw reply	[flat|nested] 65+ messages in thread

end of thread, other threads:[~2021-01-22 16:19 UTC | newest]

Thread overview: 65+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-07-22 14:44 [PATCH v4 00/13] "Task_isolation" mode Alex Belits
2020-07-22 14:48 ` [PATCH v4 02/13] task_isolation: vmstat: add vmstat_idle function Alex Belits
2020-07-22 14:49 ` [PATCH v4 03/13] task_isolation: userspace hard isolation from kernel Alex Belits
2020-07-22 14:49   ` Alex Belits
2020-10-01 13:56   ` Frederic Weisbecker
2020-10-04 14:44     ` [EXT] " Alex Belits
2020-10-04 23:14       ` Frederic Weisbecker
2020-10-05 18:52         ` Nitesh Narayan Lal
2020-10-06 10:35           ` Frederic Weisbecker
2020-10-17  1:13             ` Alex Belits
2020-10-17  1:08           ` Alex Belits
2020-10-17 16:08             ` Thomas Gleixner
2020-10-17 16:15               ` Alex Belits
2020-10-17 20:03                 ` Thomas Gleixner
2020-10-06 11:01         ` Alex Belits
2020-10-01 14:40   ` Frederic Weisbecker
2020-10-04 15:01     ` [EXT] " Alex Belits
     [not found] ` <04be044c1bcd76b7438b7563edc35383417f12c8.camel-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org>
2020-07-22 14:47   ` [PATCH v4 01/13] task_isolation: vmstat: add quiet_vmstat_sync function Alex Belits
2020-07-22 14:47     ` Alex Belits
2020-07-22 14:51   ` [PATCH v4 04/13] task_isolation: Add task isolation hooks to arch-independent code Alex Belits
2020-07-22 14:51     ` Alex Belits
2020-07-22 14:55   ` [PATCH 08/13] task_isolation: arch/arm64: enable task isolation functionality Alex Belits
2020-07-22 14:55     ` Alex Belits
2020-07-22 14:56   ` [PATCH v4 09/13] task_isolation: arch/arm: " Alex Belits
2020-07-22 14:56     ` Alex Belits
2020-07-22 14:58   ` [PATCH v4 11/13] task_isolation: net: don't flush backlog on CPUs running isolated tasks Alex Belits
2020-07-22 14:58     ` Alex Belits
2020-10-01 14:47     ` Frederic Weisbecker
2020-10-04 17:12       ` [EXT] " Alex Belits
2021-01-22 14:13       ` Marcelo Tosatti
2021-01-22 16:13         ` Paolo Abeni
2020-07-22 14:59   ` [PATCH 13/13] task_isolation: kick_all_cpus_sync: don't kick isolated cpus Alex Belits
2020-07-22 14:59     ` Alex Belits
2020-07-22 14:51 ` [PATCH v4 05/13] task_isolation: Add xen-specific hook Alex Belits
2020-07-22 14:51   ` Alex Belits
2020-07-22 14:53 ` [PATCH 06/13] task_isolation: Add driver-specific hooks Alex Belits
2020-07-22 14:53   ` Alex Belits
2020-07-22 14:54 ` [PATCH v4 07/13] task_isolation: arch/x86: enable task isolation functionality Alex Belits
2020-07-22 14:54   ` Alex Belits
2020-07-22 14:57 ` [PATCH v4 10/13] task_isolation: don't interrupt CPUs with tick_nohz_full_kick_cpu() Alex Belits
2020-10-01 14:44   ` Frederic Weisbecker
2020-10-04 15:22     ` [EXT] " Alex Belits
2020-10-06 21:41       ` Frederic Weisbecker
2020-10-17  0:17         ` Alex Belits
2020-07-22 14:59 ` [PATCH v4 12/13] task_isolation: ringbuffer: don't interrupt CPUs running isolated tasks on buffer resize Alex Belits
2020-07-22 14:59   ` Alex Belits
2020-07-23 13:17 ` [PATCH v4 00/13] "Task_isolation" mode Thomas Gleixner
2020-07-23 14:26   ` Peter Zijlstra
2020-07-23 14:53     ` Thomas Gleixner
2020-07-23 14:29   ` Peter Zijlstra
2020-07-23 15:41     ` [EXT] " Alex Belits
2020-07-23 15:48       ` Peter Zijlstra
2020-07-23 15:48         ` Peter Zijlstra
2020-07-23 16:19         ` Alex Belits
2020-07-23 16:19           ` Alex Belits
2020-07-23 15:18   ` Alex Belits
     [not found]     ` <831e023422aa0e4cb3da37ceef6fdcd5bc854682.camel-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org>
2020-07-23 15:49       ` Peter Zijlstra
2020-07-23 15:49         ` Peter Zijlstra
2020-07-23 16:50         ` Alex Belits
2020-07-23 21:44           ` Thomas Gleixner
2020-07-23 21:44             ` Thomas Gleixner
2020-07-24  3:00             ` [EXT] " Alex Belits
2020-07-24 16:08               ` Thomas Gleixner
2020-07-24 16:08                 ` Thomas Gleixner
2020-07-23 21:31     ` Thomas Gleixner

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