From b791072ba3c3b29bab1890963bde52eb944a8451 Mon Sep 17 00:00:00 2001 From: Will Schmidt Date: Wed, 18 Apr 2007 00:44:46 +1000 Subject: [PATCH] [POWERPC] hvc_console: Polling mode timer backoff Add a back-off mechanism to hvc_console's polling logic. This change drops the timers/second ratio from ~90 to ~1/2 while the console is idle. This change is most noticeable when watching /proc/timer_stats output. This only affects when the hvc_console is running in poll mode, i.e. power4 and cell systems. I've tested on Power4, Michael Ellerman has both contributed to the patch and tested on cell. Signed-off-by: Will Schmidt Signed-off-by: Michael Ellerman Acked-by: Linas Vepstas Signed-off-by: Paul Mackerras --- Reading git-format-patch failed