Alexey Dobriyan 9b130ad5bb treewide: make "nr_cpu_ids" unsigned ... First, number of CPUs can't be negative number. Second, different signnnedness leads to suboptimal code in the following cases: 1) kmalloc(nr_cpu_ids * sizeof(X)); "int" has to be sign extended to size_t. 2) while (loff_t *pos < nr_cpu_ids) MOVSXD is 1 byte longed than the same MOV. Other cases exist as well. Basically compiler is told that nr_cpu_ids can't be negative which can't be deduced if it is "int". Code savings on allyesconfig kernel: -3KB add/remove: 0/0 grow/shrink: 25/264 up/down: 261/-3631 (-3370) function old new delta coretemp_cpu_online 450 512 +62 rcu_init_one 1234 1272 +38 pci_device_probe 374 399 +25 ... pgdat_reclaimable_pages 628 556 -72 select_fallback_rq 446 369 -77 task_numa_find_cpu 1923 1807 -116 Link: http://lkml.kernel.org/r/20170819114959.GA30580@avx2 Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2017-09-08 18:26:48 -07:00
..
common.c	powerpc/xive: improve debugging macros	2017-09-02 21:02:38 +10:00
Kconfig	powerpc/xive: guest exploitation of the XIVE interrupt controller	2017-09-02 21:02:35 +10:00
Makefile	powerpc/xive: guest exploitation of the XIVE interrupt controller	2017-09-02 21:02:35 +10:00
native.c	treewide: make "nr_cpu_ids" unsigned	2017-09-08 18:26:48 -07:00
spapr.c	powerpc/xive: Fix section __init warning	2017-09-04 19:38:07 +10:00
xive-internal.h	powerpc/xive: introduce H_INT_ESB hcall	2017-09-02 21:02:37 +10:00