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| author | Dave Hansen <dave.hansen@linux.intel.com> | 2015-06-07 21:37:04 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-06-09 13:24:32 +0300 |
| commit | cd4996dce18b619bd7b3acf75c91f49c77f05a97 (patch) | |
| tree | a6c7e86ec06dd96684b9968b92336ee0f700579d /arch/x86/include/asm/trace/mpx.h | |
| parent | 2a1dcb1f796ad37028df37d96fc7c5b6b1705a43 (diff) | |
| download | linux-cd4996dce18b619bd7b3acf75c91f49c77f05a97.tar.xz | |
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 <dave.hansen@linux.intel.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Dave Hansen <dave@sr71.net>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20150607183704.EC23A93E@viggo.jf.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/include/asm/trace/mpx.h')
| -rw-r--r-- | arch/x86/include/asm/trace/mpx.h | 16 |
1 files changed, 16 insertions, 0 deletions
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 /* |