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| author | John Levon <john.levon@joyent.com> | 2019-05-20 14:28:30 +0000 |
|---|---|---|
| committer | Jerry Jelinek <jerry.jelinek@joyent.com> | 2019-05-22 14:57:24 +0000 |
| commit | c3377ee9a5b3bff76dbf51347a8de3d215eb6cca (patch) | |
| tree | a25e6e2ef6a0822cb88190fd7c261be5a0692350 /usr/src/uts/common/dtrace/dtrace.c | |
| parent | 3f1d0a2eaba951f44d96bed559e6ed4487ec298c (diff) | |
| download | illumos-joyent-c3377ee9a5b3bff76dbf51347a8de3d215eb6cca.tar.gz | |
11048 need a way to disable SMT
Reviewed by: Jerry Jelinek <jerry.jelinek@joyent.com>
Reviewed by: Robert Mustacchi <rm@joyent.com>
Reviewed by: Patrick Mooney <patrick.mooney@joyent.com>
Reviewed by: Andy Fiddaman <omnios@citrus-it.co.uk>
Reviewed by: Gergo Doma <domag02@gmail.com>
Approved by: Gordon Ross <gwr@nexenta.com>
Diffstat (limited to 'usr/src/uts/common/dtrace/dtrace.c')
| -rw-r--r-- | usr/src/uts/common/dtrace/dtrace.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/usr/src/uts/common/dtrace/dtrace.c b/usr/src/uts/common/dtrace/dtrace.c index 16a8047d2d..50ad857549 100644 --- a/usr/src/uts/common/dtrace/dtrace.c +++ b/usr/src/uts/common/dtrace/dtrace.c @@ -21,7 +21,7 @@ /* * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. - * Copyright (c) 2018, Joyent, Inc. + * Copyright 2019 Joyent, Inc. * Copyright (c) 2012, 2014 by Delphix. All rights reserved. */ @@ -6922,6 +6922,16 @@ dtrace_probe(dtrace_id_t id, uintptr_t arg0, uintptr_t arg1, return; cookie = dtrace_interrupt_disable(); + + /* + * Also refuse to process any probe firings that might happen on a + * disabled CPU. + */ + if (CPU->cpu_flags & CPU_DISABLED) { + dtrace_interrupt_enable(cookie); + return; + } + probe = dtrace_probes[id - 1]; cpuid = CPU->cpu_id; onintr = CPU_ON_INTR(CPU); |