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Commit ae5f3f5b authored by Aleksandar Markovic's avatar Aleksandar Markovic Committed by Ralf Baechle
Browse files

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



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: default avatarMiodrag Dinic <miodrag.dinic@imgtec.com>
Signed-off-by: default avatarGoran Ferenc <goran.ferenc@imgtec.com>
Signed-off-by: default avatarAleksandar 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: default avatarRalf Baechle <ralf@linux-mips.org>
parent e1231dd6

arch/mips/include/asm/fpu_emulator.h

+1 −0
Original line number Diff line number Diff line
@@ -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;

arch/mips/math-emu/cp1emu.c

+1 −0
Original line number Diff line number Diff line
@@ -1230,6 +1230,7 @@ static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_struct *ctx, 
				break;

			}

branch_common:

			MIPS_FPU_EMU_INC_STATS(branches);

			set_delay_slot(xcp);

			if (cond) {

				/*

arch/mips/math-emu/me-debugfs.c

+1 −0
Original line number Diff line number Diff line
@@ -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);