mirror of https://lore.kernel.org/lkml/
 help / color / mirror / Atom feed
From: "Clément Léger" <cleger@rivosinc.com>
To: Paul Walmsley <paul.walmsley@sifive.com>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Albert Ou <aou@eecs.berkeley.edu>
Cc: "Clément Léger" <cleger@rivosinc.com>,
	"Stafford Horne" <shorne@gmail.com>,
	"Brian Cain" <bcain@quicinc.com>,
	"Kefeng Wang" <wangkefeng.wang@huawei.com>,
	"Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>,
	"Michael Ellerman" <mpe@ellerman.id.au>,
	"Sunil V L" <sunilvl@ventanamicro.com>,
	"Anup Patel" <apatel@ventanamicro.com>,
	"Atish Patra" <atishp@rivosinc.com>,
	"Andrew Jones" <ajones@ventanamicro.com>,
	"Conor Dooley" <conor.dooley@microchip.com>,
	"Heiko Stuebner" <heiko@sntech.de>, "Guo Ren" <guoren@kernel.org>,
	"Alexandre Ghiti" <alexghiti@rivosinc.com>,
	"Masahiro Yamada" <masahiroy@kernel.org>,
	"Xianting Tian" <xianting.tian@linux.alibaba.com>,
	"Sia Jee Heng" <jeeheng.sia@starfivetech.com>,
	"Li Zhengyu" <lizhengyu3@huawei.com>,
	"Jisheng Zhang" <jszhang@kernel.org>,
	"Gautham R. Shenoy" <gautham.shenoy@amd.com>,
	"Mark Rutland" <mark.rutland@arm.com>,
	"Peter Zijlstra" <peterz@infradead.org>,
	"Marc Zyngier" <maz@kernel.org>,
	"Björn Töpel" <bjorn@rivosinc.com>,
	"Krzysztof Kozlowski" <krzysztof.kozlowski@linaro.org>,
	"Evan Green" <evan@rivosinc.com>,
	linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: [RFC V2 PATCH 4/9] riscv: report perf event for misaligned fault
Date: Tue,  4 Jul 2023 16:09:19 +0200	[thread overview]
Message-ID: <20230704140924.315594-5-cleger@rivosinc.com> (raw)
In-Reply-To: <20230704140924.315594-1-cleger@rivosinc.com>

Add missing calls to account for misaligned fault event using
perf_sw_event().

Signed-off-by: Clément Léger <cleger@rivosinc.com>
---
 arch/riscv/kernel/traps_misaligned.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/riscv/kernel/traps_misaligned.c b/arch/riscv/kernel/traps_misaligned.c
index 9daed7d756ae..804f6c5e0e44 100644
--- a/arch/riscv/kernel/traps_misaligned.c
+++ b/arch/riscv/kernel/traps_misaligned.c
@@ -6,6 +6,7 @@
 #include <linux/init.h>
 #include <linux/mm.h>
 #include <linux/module.h>
+#include <linux/perf_event.h>
 #include <linux/irq.h>
 #include <linux/stringify.h>
 
@@ -294,6 +295,8 @@ int handle_misaligned_load(struct pt_regs *regs)
 	unsigned long addr = regs->badaddr;
 	int i, fp = 0, shift = 0, len = 0;
 
+	perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, 1, regs, addr);
+
 	if (get_insn(regs, epc, &insn))
 		return -1;
 
@@ -382,6 +385,8 @@ int handle_misaligned_store(struct pt_regs *regs)
 	unsigned long addr = regs->badaddr;
 	int i, len = 0;
 
+	perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, 1, regs, addr);
+
 	if (get_insn(regs, epc, &insn))
 		return -1;
 
-- 
2.40.1


  parent reply	other threads:[~2023-07-04 14:11 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-07-04 14:09 [RFC V2 PATCH 0/9] Add support to handle misaligned accesses in S-mode Clément Léger
2023-07-04 14:09 ` [RFC V2 PATCH 1/9] riscv: remove unused functions in traps_misaligned.c Clément Léger
2023-07-04 14:09 ` [RFC V2 PATCH 2/9] riscv: avoid missing prototypes warning Clément Léger
2023-07-08 19:34   ` Stafford Horne
2023-07-04 14:09 ` [RFC V2 PATCH 3/9] riscv: add support for misaligned handling in S-mode Clément Léger
2023-07-08 20:08   ` Stafford Horne
2023-07-04 14:09 ` Clément Léger [this message]
2023-07-04 14:09 ` [RFC V2 PATCH 5/9] riscv: add support for sysctl unaligned_enabled control Clément Léger
2023-07-04 14:09 ` [RFC V2 PATCH 6/9] riscv: add support for SBI misalignment trap delegation Clément Léger
2023-07-04 14:09 ` [RFC V2 PATCH 7/9] riscv: report misaligned accesses emulation to hwprobe Clément Léger
2023-07-04 14:09 ` [RFC V2 PATCH 8/9] riscv: add support for PR_SET_UNALIGN and PR_GET_UNALIGN Clément Léger
2023-07-04 14:09 ` [RFC V2 PATCH 9/9] riscv: add floating point insn support to misaligned access emulation Clément Léger

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20230704140924.315594-5-cleger@rivosinc.com \
    --to=cleger@rivosinc.com \
    --cc=ajones@ventanamicro.com \
    --cc=alexghiti@rivosinc.com \
    --cc=aou@eecs.berkeley.edu \
    --cc=apatel@ventanamicro.com \
    --cc=atishp@rivosinc.com \
    --cc=bcain@quicinc.com \
    --cc=bjorn@rivosinc.com \
    --cc=conor.dooley@microchip.com \
    --cc=evan@rivosinc.com \
    --cc=gautham.shenoy@amd.com \
    --cc=guoren@kernel.org \
    --cc=heiko@sntech.de \
    --cc=jeeheng.sia@starfivetech.com \
    --cc=jszhang@kernel.org \
    --cc=krzysztof.kozlowski@linaro.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-riscv@lists.infradead.org \
    --cc=lizhengyu3@huawei.com \
    --cc=mark.rutland@arm.com \
    --cc=masahiroy@kernel.org \
    --cc=maz@kernel.org \
    --cc=mpe@ellerman.id.au \
    --cc=palmer@dabbelt.com \
    --cc=paul.walmsley@sifive.com \
    --cc=peterz@infradead.org \
    --cc=rmk+kernel@armlinux.org.uk \
    --cc=shorne@gmail.com \
    --cc=sunilvl@ventanamicro.com \
    --cc=wangkefeng.wang@huawei.com \
    --cc=xianting.tian@linux.alibaba.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox

all inboxes | Powered by JetHome®