litmus-rt-edfsc.git - LITMUS^RT with the EDF-SC plugin for Real-Time Systems journal paper

	Commit message (Collapse)	Author	Age
*	MIPS: SMP: Don't increment irq_count multiple times for call function IPIs	Alex Smith	2015-08-03
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	The majority of SMP platforms handle their IPIs through do_IRQ() which calls irq_{enter/exit}(). When a call function IPI is received, smp_call_function_interrupt() is called which also calls irq_{enter,exit}(), meaning irq_count is raised twice. When tick broadcasting is used (which is implemented via a call function IPI), this incorrectly causes all CPU idle time on the core receiving broadcast ticks to be accounted as time spent servicing IRQs, as account_process_tick() will account as such if irq_count is greater than 1. This results in 100% CPU usage being reported on a core which receives its ticks via broadcast. This patch removes the SMP smp_call_function_interrupt() wrapper which calls irq_{enter,exit}(). Platforms which handle their IPIs through do_IRQ() now call generic_smp_call_function_interrupt() directly to avoid incrementing irq_count a second time. Platforms which don't (loongson, sgi-ip27, sibyte) call generic_smp_call_function_interrupt() wrapped in irq_{enter,exit}(). Signed-off-by: Alex Smith <alex.smith@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/10770/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
*	mips: fix up obsolete cpu function usage.	Rusty Russell	2015-03-04
\| \| \| \| \| \| \| \| \| \| \|	Thanks to spatch, plus manual removal of "&*". Then a sweep for for_each_cpu_mask => for_each_cpu. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Kevin Cernekee <cernekee@gmail.com> Cc: Florian Fainelli <f.fainelli@gmail.com> Cc: linux-mips@linux-mips.org
*	mips: Update the email address of Geert Uytterhoeven	Geert Uytterhoeven	2014-06-02
\| \| \| \| \| \| \| \| \|	All my Sony addresses are defunct. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/6817/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
*	MIPS: Add code for new system 'paravirt'	David Daney	2014-06-02
	For para-virtualized guests running under KVM or other equivalent hypervisor. Signed-off-by: David Daney <david.daney@cavium.com> Signed-off-by: Andreas Herrmann <andreas.herrmann@caviumnetworks.com> Cc: linux-mips@linux-mips.org Cc: James Hogan <james.hogan@imgtec.com> Cc: kvm@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/7004/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>