Re: [PATCH] Performance Stats: Kernel patch

On Thu, May 10, 2007 at 10:22:54AM +0000, Maxim Uvarov wrote:

Linas Vepstas wrote:

quoted

On Tue, May 08, 2007 at 04:26:51PM +0000, Maxim Uvarov wrote:

quoted

+	addq $1, threadinfo_syscall_count(%rcx)   # Increment syscalls 

again, #ifdef CONFIG_TASKSTATS,

So I don't really sure if  defines are needed in  entry.S code. I tried 
to do
some tests and  it is impossible to catch the performance difference (small
overhead).

"A penny here, and a penny there, and pretty soon it adds up to real
money". Its a hot path, and its an easy fix. 

--linas