Anton Blanchard c8cd093a6e powerpc: tracing: Add hypervisor call tracepoints ... Add hcall_entry and hcall_exit tracepoints. This replaces the inline assembly HCALL_STATS code and converts it to use the new tracepoints. To keep the disabled case as quick as possible, we embed a status word in the TOC so we can get at it with a single load. By doing so we keep the overhead at a minimum. Time taken for a null hcall: No tracepoint code: 135.79 cycles Disabled tracepoints: 137.95 cycles For reference, before this patch enabling HCALL_STATS resulted in a null hcall of 201.44 cycles! Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>		2009-10-28 16:13:04 +11:00
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asm	powerpc: tracing: Add hypervisor call tracepoints	2009-10-28 16:13:04 +11:00