commit ee06094f8279e1312fc0a31591320cc7b6f0ab1e
author Ingo Molnar <mingo@elte.hu> Sat Dec 13 09:00:03 2008 +0100
committer Ingo Molnar <mingo@elte.hu> Sun Dec 14 20:30:48 2008 +0100
tree aecf8f2177b2398e4db8df68a9705009b31a8ef7
parent 9b194e831fb2c322ed81a373e49620f34edc2778

perfcounters: restructure x86 counter math

Impact: restructure code

Change counter math from absolute values to clear delta logic.

We try to extract elapsed deltas from the raw hw counter - and put
that into the generic counter.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

arch/x86/Kconfig

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index f2fdc18..fe94490 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -643,7 +643,7 @@
 config X86_LOCAL_APIC
 	def_bool y
 	depends on X86_64 || (X86_32 && (X86_UP_APIC || (SMP && !X86_VOYAGER) || X86_GENERICARCH))
-	select HAVE_PERF_COUNTERS
+	select HAVE_PERF_COUNTERS if (!M386 && !M486)
 
 config X86_IO_APIC
 	def_bool y