tracing/trace_stack: fix the number of entries in the header
authorwalimis <walimisdev@gmail.com>
Wed, 3 Jun 2009 08:01:28 +0000 (16:01 +0800)
committerSteven Rostedt <rostedt@goodmis.org>
Wed, 3 Jun 2009 14:24:44 +0000 (10:24 -0400)
commit083a63b48e4dd0a6a2d44216720076dc81ebb255
treec63fe5fed8b44538ecb6870cbe99c45d32915f9e
parentea05b57cc19234d8de9887c8a32c2e58e84b56ba
tracing/trace_stack: fix the number of entries in the header

The last entry in the stack_dump_trace is ULONG_MAX, which is not
a valid entry, but max_stack_trace.nr_entries has accounted for it.
So when printing the header, we should decrease it by one.
Before fix, print as following, for example:

Depth    Size   Location    (53 entries) <--- should be 52
-----    ----   --------
  0)     3264     108   update_wall_time+0x4d5/0x9a0
  ...
 51)       80      80   syscall_call+0x7/0xb
 ^^^
   it's correct.

Signed-off-by: walimis <walimisdev@gmail.com>
LKML-Reference: <1244016090-7814-1-git-send-email-walimisdev@gmail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
kernel/trace/trace_stack.c