[stgt] [PATCH] Moved check for is_debug from log_debug() function to dprintf() macro.

[FUJITA Tomonori]

On Wed, 02 Jun 2010 20:12:57 +0300
Alexander Nezhinsky <alexandern at Voltaire.COM> wrote:

> To minimize the overhead of debug printouts during non-debug runs,
> the check for "is_debug" is moved from log_debug() function 
> to dprintf() macro.
> 
> Now log_debug is called only if "is_debug" is set. 
> This spares a function call, parameter passing and the costs of 
> complex arguments expanding and evaluation.
> To minimize the potential cost of log_debug() even more,
> the check for is_debug is put under unlikely() statement.
> 
> Signed-off-by: Alexander Nezhinsky <alexandern at voltaire.com>
> ---
>  usr/log.c  |    5 +----
>  usr/log.h  |    6 +++++-
>  usr/tgtd.h |    1 +
>  3 files changed, 7 insertions(+), 5 deletions(-)

Applied, thanks.
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