linux-kernel - [PATCH 4.9 132/241] MIPS: r2-on-r6-emu: Clear BLTZALL and BGEZALL debugfs counters

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Date:   Mon, 19 Mar 2018 19:06:37 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Aleksandar Markovic <aleksandar.markovic@...tec.com>,
        Paul Burton <paul.burton@...tec.com>, james.hogan@...tec.com,
        leonid.yegoshin@...tec.com, douglas.leung@...tec.com,
        petar.jovanovic@...tec.com, miodrag.dinic@...tec.com,
        goran.ferenc@...tec.com, linux-mips@...ux-mips.org,
        Ralf Baechle <ralf@...ux-mips.org>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 4.9 132/241] MIPS: r2-on-r6-emu: Clear BLTZALL and BGEZALL debugfs counters

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Aleksandar Markovic <aleksandar.markovic@...tec.com>


[ Upstream commit 411dac79cc2ed80f7e348ccc23eb4d8b0ba9f6d5 ]

Add missing clearing of BLTZALL and BGEZALL emulation counters in
function mipsr2_stats_clear_show().

Previously, it was not possible to reset BLTZALL and BGEZALL
emulation counters - their value remained the same even after
explicit request via debugfs. As far as other related counters
are concerned, they all seem to be properly cleared.

This change affects debugfs operation only, core R2 emulation
functionality is not affected.

Signed-off-by: Aleksandar Markovic <aleksandar.markovic@...tec.com>
Reviewed-by: Paul Burton <paul.burton@...tec.com>
Cc: james.hogan@...tec.com
Cc: leonid.yegoshin@...tec.com
Cc: douglas.leung@...tec.com
Cc: petar.jovanovic@...tec.com
Cc: miodrag.dinic@...tec.com
Cc: goran.ferenc@...tec.com
Cc: linux-mips@...ux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/15517/
Signed-off-by: Ralf Baechle <ralf@...ux-mips.org>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 arch/mips/kernel/mips-r2-to-r6-emul.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/arch/mips/kernel/mips-r2-to-r6-emul.c
+++ b/arch/mips/kernel/mips-r2-to-r6-emul.c
@@ -2339,6 +2339,8 @@ static int mipsr2_stats_clear_show(struc
 	__this_cpu_write((mipsr2bremustats).bgezl, 0);
 	__this_cpu_write((mipsr2bremustats).bltzll, 0);
 	__this_cpu_write((mipsr2bremustats).bgezll, 0);
+	__this_cpu_write((mipsr2bremustats).bltzall, 0);
+	__this_cpu_write((mipsr2bremustats).bgezall, 0);
 	__this_cpu_write((mipsr2bremustats).bltzal, 0);
 	__this_cpu_write((mipsr2bremustats).bgezal, 0);
 	__this_cpu_write((mipsr2bremustats).beql, 0);