David Daney b6ee75ed4f MIPS: Collect FPU emulator statistics per-CPU. ... On SMP systems, the collection of statistics can cause cache line bouncing in the lines associated with the counters. Also there are races incrementing the counters on multiple CPUs. To fix both problems, we collect the statistics in per-CPU variables, and add them up in the debugfs read operation. As a test I ran the LTP float_bessel test on a 12 CPU Octeon system. Without CONFIG_DEBUG_FS : 2602 seconds. With CONFIG_DEBUG_FS: 2640 seconds. With non-cpu-local atomic statistics: 14569 seconds. Signed-off-by: David Daney <ddaney@caviumnetworks.com> Cc: linux-mips@linux-mips.org Signed-off-by: Ralf Baechle <ralf@linux-mips.org>		2009-12-17 01:57:08 +00:00
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cp1emu.c	MIPS: Collect FPU emulator statistics per-CPU.	2009-12-17 01:57:08 +00:00
dp_add.c
dp_cmp.c
dp_div.c
dp_fint.c
dp_flong.c
dp_frexp.c
dp_fsp.c
dp_logb.c
dp_modf.c
dp_mul.c
dp_scalb.c
dp_simple.c	MIPS: Fix abs.[sd] and neg.[sd] emulation for NaN operands	2009-11-02 12:00:05 +01:00
dp_sqrt.c
dp_sub.c	tree-wide: fix assorted typos all over the place	2009-12-04 15:39:55 +01:00
dp_tint.c
dp_tlong.c
dsemul.c	MIPS: Collect FPU emulator statistics per-CPU.	2009-12-17 01:57:08 +00:00
ieee754.c
ieee754.h
ieee754d.c
ieee754dp.c
ieee754dp.h
ieee754int.h
ieee754m.c
ieee754sp.c
ieee754sp.h
ieee754xcpt.c
kernel_linkage.c
Makefile	[MIPS] Use -Werror on subdirectories which build cleanly.	2007-07-31 21:35:33 +01:00
sp_add.c
sp_cmp.c
sp_div.c
sp_fdp.c
sp_fint.c
sp_flong.c
sp_frexp.c
sp_logb.c
sp_modf.c
sp_mul.c
sp_scalb.c
sp_simple.c	MIPS: Fix abs.[sd] and neg.[sd] emulation for NaN operands	2009-11-02 12:00:05 +01:00
sp_sqrt.c
sp_sub.c
sp_tint.c
sp_tlong.c	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00