x86: Don't use the strict copy checks when branch profiling is in use
commitad8f4356af58f7ded6b4a5787c67c7cab51066b5
authorArjan van de Ven <arjan@infradead.org>
Tue, 6 Oct 2009 14:04:52 +0000 (6 07:04 -0700)
committerIngo Molnar <mingo@elte.hu>
Mon, 12 Oct 2009 20:29:51 +0000 (12 22:29 +0200)
tree08aea59cda46a4c627714cd63eb970b127f228d3
parentae24ffe5ecec17c956ac25371d7c2e12b4b36e53
x86: Don't use the strict copy checks when branch profiling is in use

The branch profiling creates very complex code for each if
statement, to the point that gcc has trouble even analyzing
something as simple as

  if (count > 5)
      count = 5;

This then means that causing an error on code that gcc cannot
analyze for copy_from_user() and co is not very productive.

This patch excludes the strict copy checks in the case of branch
profiling being enabled.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
LKML-Reference: <20091006070452.5e1fc119@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
arch/x86/Kconfig.debug