From ae5f3f5b81dd2c776f0ad49d6d121ce1255b35eb Mon Sep 17 00:00:00 2001 From: Aleksandar Markovic Date: Mon, 21 Aug 2017 14:24:50 +0200 Subject: [PATCH] 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: Miodrag Dinic Signed-off-by: Goran Ferenc Signed-off-by: Aleksandar Markovic Cc: Douglas Leung Cc: James Hogan Cc: Maciej W. Rozycki Cc: Masahiro Yamada Cc: Paul Burton Cc: Petar Jovanovic Cc: Raghu Gandham 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 --- arch/mips/include/asm/fpu_emulator.h | 1 + arch/mips/math-emu/cp1emu.c | 1 + arch/mips/math-emu/me-debugfs.c | 1 + 3 files changed, 3 insertions(+) diff --git a/arch/mips/include/asm/fpu_emulator.h b/arch/mips/include/asm/fpu_emulator.h index 8e50fa3..4c8ab27 100644 --- a/arch/mips/include/asm/fpu_emulator.h +++ b/arch/mips/include/asm/fpu_emulator.h @@ -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; diff --git a/arch/mips/math-emu/cp1emu.c b/arch/mips/math-emu/cp1emu.c index a4df220..a1f06ad 100644 --- a/arch/mips/math-emu/cp1emu.c +++ b/arch/mips/math-emu/cp1emu.c @@ -1230,6 +1230,7 @@ emul: break; } branch_common: + MIPS_FPU_EMU_INC_STATS(branches); set_delay_slot(xcp); if (cond) { /* diff --git a/arch/mips/math-emu/me-debugfs.c b/arch/mips/math-emu/me-debugfs.c index be650ed..78b26c8 100644 --- a/arch/mips/math-emu/me-debugfs.c +++ b/arch/mips/math-emu/me-debugfs.c @@ -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); -- 2.7.4