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From: Andi Kleen <ak@linux.intel.com>
To: speck@linutronix.de
Subject: [MODERATED] [PATCH 0/1] SMTCTL 0
Date: Thu,  7 Jun 2018 13:54:54 -0700	[thread overview]
Message-ID: <cover.1528404649.git.ak@linux.intel.com> (raw)

Here's an alternative proposal for SMT disabling.

I reimplemented my script as a C tool and put it into tools/* 

# smtctl --enable
# smtctl --disable
# smtctl --print

Advantages:
- No kernel changes (although it would benefit from a minor one,
see the commit)
- Much easier to use at runtime than opaque sysfs
- Encourages the right use model of only switching SMT state
when it is actually needed and based on a conscious decision, 
not unnecessarily or globally.

Andi Kleen (1):
  tools/smtctl: Add smtctl to enable/disable SMT at runtime

 tools/smtctl/Makefile |  10 ++
 tools/smtctl/smtctl.c | 257 ++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 267 insertions(+)
 create mode 100644 tools/smtctl/Makefile
 create mode 100644 tools/smtctl/smtctl.c

-- 
2.14.3

             reply	other threads:[~2018-06-07 20:54 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-06-07 20:54 Andi Kleen [this message]
2018-06-07 20:54 ` [MODERATED] [PATCH 1/1] SMTCTL 1 Andi Kleen

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