diff options
| author | Ben Hutchings <ben@decadent.org.uk> | 2019-05-10 00:46:25 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-05-14 19:19:36 +0200 |
| commit | c803409910a6e2ca70c3edd557aeda0055827f7a (patch) | |
| tree | ac5342d9eacd889f9665638ace57e9ba44c2a08e /kernel/sched/sched.h | |
| parent | 4cc154901e47d56e7491d37f7a81768ddb96e733 (diff) | |
sched: Add sched_smt_active()
Add the sched_smt_active() function needed for some x86 speculation
mitigations. This was introduced upstream by commits 1b568f0aabf2
"sched/core: Optimize SCHED_SMT", ba2591a5993e "sched/smt: Update
sched_smt_present at runtime", c5511d03ec09 "sched/smt: Make
sched_smt_present track topology", and 321a874a7ef8 "sched/smt: Expose
sched_smt_present static key". The upstream implementation uses the
static_key_{disable,enable}_cpuslocked() functions, which aren't
practical to backport.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/sched/sched.h')
| -rw-r--r-- | kernel/sched/sched.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index ec6e838e991a..15c08752926b 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -2,6 +2,7 @@ #include <linux/sched.h> #include <linux/sched/sysctl.h> #include <linux/sched/rt.h> +#include <linux/sched/smt.h> #include <linux/u64_stats_sync.h> #include <linux/sched/deadline.h> #include <linux/kernel_stat.h> |