kernel/x86: rework get_frequency_for

we don't sample if the last sample is too recent and use the cached result. Change-Id: I17ed29bda7fe7276f1a4148b3e1985c9d32ae032 Reviewed-on: https://review.haiku-os.org/c/haiku/+/4101 Reviewed-by: Jérôme Duval <[email protected]> Reviewed-by: Adrien Destugues <[email protected]>
2021-11-22 07:21:04 +00:00
parent 7c2c355f17
commit 4106e3f146
3 changed files with 26 additions and 6 deletions
@@ -518,6 +518,11 @@ typedef struct arch_cpu_info {

 	uint32				logical_apic_id;

+	uint64				mperf_prev;
+	uint64				aperf_prev;
+	bigtime_t			perf_timestamp;
+	uint64				frequency;
+
 	struct X86PagingStructures* active_paging_structures;

 	size_t				dr6;	// temporary storage for debug registers (cf.