iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

MIPS: math-emu: Add FP emu debugfs statistics for branches

Browse Source 
Add FP emu debugfs counter for branches.

The new counter is displayed the same way as existing counter, and
its default path is /sys/kernel/debug/mips/fpuemustats/.

The limitation of this counter is that it counts only R6 branch
instructions BC1NEZ and BC1EQZ.

Signed-off-by: Miodrag Dinic <miodrag.dinic@imgtec.com>
Signed-off-by: Goran Ferenc <goran.ferenc@imgtec.com>
Signed-off-by: Aleksandar Markovic <aleksandar.markovic@imgtec.com>
Cc: Douglas Leung <douglas.leung@imgtec.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Maciej W. Rozycki <macro@imgtec.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: Petar Jovanovic <petar.jovanovic@imgtec.com>
Cc: Raghu Gandham <raghu.gandham@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/17143/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Aleksandar Markovic 2017-08-21 14:24:50 +02:00 committed by Ralf Baechle
parent e1231dd6b1
commit ae5f3f5b81
3 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/mips/include/asm/fpu_emulator.h
View File

@ -36,6 +36,7 @@ struct mips_fpu_emulator_stats {
unsigned long emulated;
unsigned long loads;
unsigned long stores;
unsigned long branches;
unsigned long cp1ops;
unsigned long cp1xops;
unsigned long errors;

1
arch/mips/math-emu/cp1emu.c
View File

@ -1230,6 +1230,7 @@ emul:
break;
}
branch_common:
MIPS_FPU_EMU_INC_STATS(branches);
set_delay_slot(xcp);
if (cond) {
/*

1
arch/mips/math-emu/me-debugfs.c
View File

@ -53,6 +53,7 @@ do { \
FPU_STAT_CREATE(emulated);
FPU_STAT_CREATE(loads);
FPU_STAT_CREATE(stores);
FPU_STAT_CREATE(branches);
FPU_STAT_CREATE(cp1ops);
FPU_STAT_CREATE(cp1xops);
FPU_STAT_CREATE(errors);