Thomas Gleixner 0e797117f1 sched/smt: Expose sched_smt_present static key ...

commit 321a874a7e upstream

Make the scheduler's 'sched_smt_present' static key globaly available, so
it can be used in the x86 speculation control code.

Provide a query function and a stub for the CONFIG_SMP=n case.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: David Woodhouse <dwmw@amazon.co.uk>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Casey Schaufler <casey.schaufler@intel.com>
Cc: Asit Mallick <asit.k.mallick@intel.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Jon Masters <jcm@redhat.com>
Cc: Waiman Long <longman9394@gmail.com>
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: Dave Stewart <david.c.stewart@intel.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20181125185004.430168326@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2018-12-05 19:41:20 +01:00

..

autogroup.c

sched/autogroup: Fix possible Spectre-v1 indexing for sched_prio_to_weight[]

2018-05-16 10:10:30 +02:00

autogroup.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

clock.c

…

completion.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

core.c

sched/smt: Make sched_smt_present track topology

2018-12-05 19:41:20 +01:00

cpuacct.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

cpuacct.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

cpudeadline.c

…

cpudeadline.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

cpufreq_schedutil.c

cpufreq: schedutil: Avoid using invalid next_freq

2018-05-16 10:10:29 +02:00

cpufreq.c

…

cpupri.c

…

cpupri.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

cputime.c

…

deadline.c

sched/deadline: Fix switching to -deadline

2018-09-15 09:45:35 +02:00

debug.c

sched/debug: Remove unused variable

2017-09-29 10:09:09 +02:00

fair.c

sched/core: Fix cpu.max vs. cpuhotplug deadlock

2018-12-05 19:41:17 +01:00

features.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

idle_task.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

idle.c

…

loadavg.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

Makefile

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

membarrier.c

membarrier: Disable preemption when calling smp_call_function_many()

2018-01-17 09:45:23 +01:00

rt.c

sched/rt: Restore rt_runtime after disabling RT_RUNTIME_SHARE

2018-09-05 09:26:29 +02:00

sched-pelt.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

sched.h

sched/smt: Expose sched_smt_present static key

2018-12-05 19:41:20 +01:00

stats.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

stats.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

stop_task.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

swait.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

topology.c

sched/rt: Up the root domain ref count when passing it around via IPIs

2018-02-16 20:22:44 +01:00

wait_bit.c

…

wait.c

sched/core: Use smp_mb() in wake_woken_function()

2018-09-26 08:38:10 +02:00