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<DIV><FONT face=Arial size=2> I am trying to understand exit points from
kernel mode to user mode. I believe this happens when the scheduler is invoked,
there are interrupts, exceptions, or the kernel is executing system call in
process context.
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Is there a single function which is called in the
ppc kernel when the mode is switched back to user mode ? </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I have linux 2.6.16.21 kernel running on a
4-way p550 IBM pSeries with POWER5 processors. Everytime before a process begins
executing in user mode I want to execute a special SMT thread priority
assembler instruction. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>What code files should I be looking at, is there
one place this can be done? Any tips are
appreciated.</FONT></DIV></FONT></DIV></BODY></HTML>