From: Russ Anderson Date: Thu, 20 Sep 2007 18:59:12 +0000 (-0500) Subject: [IA64] Remove needless delay in MCA rendezvous X-Git-Tag: v2.6.24-rc1~1287^2~5 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2bc5c282999af41042c2b703bf3a58ca1d7e3ee2;p=pandora-kernel.git [IA64] Remove needless delay in MCA rendezvous While testing the MCA recovery code, noticed that some machines would have a five second delay rendezvousing cpus. What was happening is that ia64_wait_for_slaves() would check to see if all the slave CPUs had rendezvoused. If any had not, it would wait 1 millisecond then check again. If any CPUs had still not rendezvoused, it would wait 5 seconds before checking again. On some configs the rendezvous takes more than 1 millisecond, causing the code to wait the full 5 seconds, even though the last CPU rendezvoused after only a few milliseconds. The fix is to check every 1 millisecond to see if all the cpus have rendezvoused. After 5 seconds the code concludes the CPUs will never rendezvous (same as before). The MCA code is, by definition, not performance critical, but a needless delay of 5 seconds is senseless. The 5 seconds also adds up quickly when running the error injection code in a loop. This patch both simplifies the code and removes the needless delay. Signed-off-by: Russ Anderson Signed-off-by: Tony Luck --- Reading git-diff-tree failed