linux - linux

	Commit message (Collapse)	Author	Age	Files	Lines
*	sched: use slab in cpupri_init()	Pekka Enberg	2009-06-11	1	-3/+5
\| \| \| \| \| \| \| \| \| \|	Lets not use the bootmem allocator in cpupri_init() as slab is already up when it is run. Cc: Ingo Molnar <mingo@elte.hu> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
*	cpumask: alloc zeroed cpumask for static cpumask_var_ts	Yinghai Lu	2009-06-09	1	-1/+1
\| \| \| \| \| \| \| \|	These are defined as static cpumask_var_t so if MAXSMP is not used, they are cleared already. Avoid surprises when MAXSMP is enabled. Signed-off-by: Yinghai Lu <yinghai.lu@kernel.org> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
*	sched_rt: don't allocate cpumask in fastpath	Rusty Russell	2009-04-01	1	-2/+3
\| \| \| \| \| \| \| \| \| \| \| \|	Impact: cleanup As pointed out by Steven Rostedt. Since the arg in question is unused, we simply change cpupri_find() to accept NULL. Reported-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> LKML-Reference: <200903251501.22664.rusty@rustcorp.com.au> Signed-off-by: Ingo Molnar <mingo@elte.hu>
*	sched: fix section mismatch	Li Zefan	2009-01-06	1	-1/+1
\| \| \| \| \| \| \| \|	init_rootdomain() calls alloc_bootmem_cpumask_var() at system boot, so does cpupri_init(). Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
*	sched: convert struct cpupri_vec cpumask_var_t.	Rusty Russell	2008-11-24	1	-11/+28
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	Impact: stack usage reduction, (future) size reduction for large NR_CPUS. Dynamically allocating cpumasks (when CONFIG_CPUMASK_OFFSTACK) saves space for small nr_cpu_ids but big CONFIG_NR_CPUS. The fact cpupro_init is called both before and after the slab is available makes for an ugly parameter unfortunately. We also use cpumask_any_and to get rid of a temporary in cpupri_find. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Ingo Molnar <mingo@elte.hu>
*	sched: use a 2-d bitmap for searching lowest-pri CPU	Gregory Haskins	2008-06-06	1	-0/+174
	The current code use a linear algorithm which causes scaling issues on larger SMP machines. This patch replaces that algorithm with a 2-dimensional bitmap to reduce latencies in the wake-up path. Signed-off-by: Gregory Haskins <ghaskins@novell.com> Acked-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>