ftrace: fix lockup with MAXSMP

MAXSMP brings in lots of use of various bitops in smp_processor_id()
and friends - causing ftrace to lock up during bootup:

  calling  anon_inode_init+0x0/0x130
  initcall anon_inode_init+0x0/0x130 returned 0 after 0 msecs
  calling  acpi_event_init+0x0/0x57
  [ hard hang ]

So exclude the bitops facilities from tracing.

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

diff --git a/lib/Makefile b/lib/Makefile
index 2c62a9c..d90d311 100644 (file)
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -15,6 +15,9 @@ CFLAGS_REMOVE_string.o = -pg
 CFLAGS_REMOVE_spinlock_debug.o = -pg
 CFLAGS_REMOVE_list_debug.o = -pg
 CFLAGS_REMOVE_debugobjects.o = -pg
+CFLAGS_REMOVE_find_next_bit.o = -pg
+CFLAGS_REMOVE_cpumask.o = -pg
+CFLAGS_REMOVE_bitmap.o = -pg
 endif
 
 lib-$(CONFIG_MMU) += ioremap.o