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authorThomas Gleixner <tglx@linutronix.de>2020-04-21 21:22:36 +0200
committerThomas Gleixner <tglx@linutronix.de>2020-06-11 15:15:02 +0200
commit865d3a9afe7eddf320e7f61a442864d6efe27505 (patch)
treec9800c78f472be091addac5a29195734a22dd8d5 /kernel
parent75347bb2535a6d5549cc3e436467b7c40d7bb874 (diff)
downloadlinux-865d3a9afe7eddf320e7f61a442864d6efe27505.tar.bz2
x86/mce: Address objtools noinstr complaints
Mark the relevant functions noinstr, use the plain non-instrumented MSR accessors. The only odd part is the instrumentation_begin()/end() pair around the indirect machine_check_vector() call as objtool can't figure that out. The possible invoked functions are annotated correctly. Also use notrace variant of nmi_enter/exit(). If MCEs happen then hardware latency tracing is the least of the worries. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexandre Chartre <alexandre.chartre@oracle.com> Acked-by: Peter Zijlstra <peterz@infradead.org> Acked-by: Andy Lutomirski <luto@kernel.org> Link: https://lkml.kernel.org/r/20200505135315.476734898@linutronix.de
Diffstat (limited to 'kernel')
-rw-r--r--kernel/time/timekeeping.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index 9ebaab13339d..d20d489841c8 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -953,7 +953,7 @@ EXPORT_SYMBOL_GPL(ktime_get_real_seconds);
* but without the sequence counter protect. This internal function
* is called just when timekeeping lock is already held.
*/
-time64_t __ktime_get_real_seconds(void)
+noinstr time64_t __ktime_get_real_seconds(void)
{
struct timekeeper *tk = &tk_core.timekeeper;