From: Martin Schwidefsky Date: Tue, 27 Dec 2011 10:27:22 +0000 (+0100) Subject: [S390] outstanding interrupts vs. smp_send_stop X-Git-Tag: v3.3-rc1~157^2~10 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=85ac7ca5972d63d23aa5ea75c3834a33b951f89d;p=pandora-kernel.git [S390] outstanding interrupts vs. smp_send_stop The panic function will first print the panic message to the console, then stop additional cpus with smp_send_stop and finally call the function on the panic notifier list. In case of an I/O based console the panic message will cause I/O to be started and a function on the panic notifier list will wait for the completion of the I/O. That does not work if an I/O completion interrupt has already been delivered to a cpu that is then stopped by smp_send_stop. To break this cyclic dependency add code to smp_send_stop that gives the additional cpu the opportunity to complete outstanding interrupts. Signed-off-by: Martin Schwidefsky --- Reading git-diff-tree failed