From cd4996dce18b619bd7b3acf75c91f49c77f05a97 Mon Sep 17 00:00:00 2001 From: Dave Hansen Date: Sun, 7 Jun 2015 11:37:04 -0700 Subject: x86/mpx: Trace allocation of new bounds tables Bounds tables are a significant consumer of memory. It is important to know when they are being allocated. Add a trace point to trace whenever an allocation occurs and also its virtual address. Signed-off-by: Dave Hansen Reviewed-by: Thomas Gleixner Cc: Andrew Morton Cc: Dave Hansen Cc: H. Peter Anvin Cc: Linus Torvalds Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20150607183704.EC23A93E@viggo.jf.intel.com Signed-off-by: Ingo Molnar --- arch/x86/include/asm/trace/mpx.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'arch/x86/include') diff --git a/arch/x86/include/asm/trace/mpx.h b/arch/x86/include/asm/trace/mpx.h index c13c6fa3fa92..173dd3ba108c 100644 --- a/arch/x86/include/asm/trace/mpx.h +++ b/arch/x86/include/asm/trace/mpx.h @@ -95,6 +95,22 @@ DEFINE_EVENT(mpx_range_trace, mpx_unmap_search, TP_ARGS(start, end) ); +TRACE_EVENT(mpx_new_bounds_table, + + TP_PROTO(unsigned long table_vaddr), + TP_ARGS(table_vaddr), + + TP_STRUCT__entry( + __field(unsigned long, table_vaddr) + ), + + TP_fast_assign( + __entry->table_vaddr = table_vaddr; + ), + + TP_printk("table vaddr:%p", (void *)__entry->table_vaddr) +); + #else /* -- cgit v1.2.3