From: Jisheng Zhang <jszhang@kernel.org>
To: Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>, Guo Ren <guoren@kernel.org>,
Nathan Chancellor <nathan@kernel.org>,
Nick Desaulniers <ndesaulniers@google.com>
Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org,
llvm@lists.linux.dev
Subject: [PATCH 1/4] riscv: remove extra level wrappers of trace_hardirqs_{on,off}
Date: Mon, 26 Sep 2022 01:53:53 +0800 [thread overview]
Message-ID: <20220925175356.681-2-jszhang@kernel.org> (raw)
In-Reply-To: <20220925175356.681-1-jszhang@kernel.org>
Since riscv is converted to generic entry, there's no need for the
extra wrappers of trace_hardirqs_{on,off}.
Tested with llvm + irqsoff.
Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
---
arch/riscv/kernel/Makefile | 2 --
arch/riscv/kernel/trace_irq.c | 27 ---------------------------
arch/riscv/kernel/trace_irq.h | 11 -----------
3 files changed, 40 deletions(-)
delete mode 100644 arch/riscv/kernel/trace_irq.c
delete mode 100644 arch/riscv/kernel/trace_irq.h
diff --git a/arch/riscv/kernel/Makefile b/arch/riscv/kernel/Makefile
index 01da14e21019..11ee206cc235 100644
--- a/arch/riscv/kernel/Makefile
+++ b/arch/riscv/kernel/Makefile
@@ -69,8 +69,6 @@ obj-$(CONFIG_CPU_PM) += suspend_entry.o suspend.o
obj-$(CONFIG_FUNCTION_TRACER) += mcount.o ftrace.o
obj-$(CONFIG_DYNAMIC_FTRACE) += mcount-dyn.o
-obj-$(CONFIG_TRACE_IRQFLAGS) += trace_irq.o
-
obj-$(CONFIG_PERF_EVENTS) += perf_callchain.o
obj-$(CONFIG_HAVE_PERF_REGS) += perf_regs.o
obj-$(CONFIG_RISCV_SBI) += sbi.o
diff --git a/arch/riscv/kernel/trace_irq.c b/arch/riscv/kernel/trace_irq.c
deleted file mode 100644
index 095ac976d7da..000000000000
--- a/arch/riscv/kernel/trace_irq.c
+++ /dev/null
@@ -1,27 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright (C) 2022 Changbin Du <changbin.du@gmail.com>
- */
-
-#include <linux/irqflags.h>
-#include <linux/kprobes.h>
-#include "trace_irq.h"
-
-/*
- * trace_hardirqs_on/off require the caller to setup frame pointer properly.
- * Otherwise, CALLER_ADDR1 might trigger an pagging exception in kernel.
- * Here we add one extra level so they can be safely called by low
- * level entry code which $fp is used for other purpose.
- */
-
-void __trace_hardirqs_on(void)
-{
- trace_hardirqs_on();
-}
-NOKPROBE_SYMBOL(__trace_hardirqs_on);
-
-void __trace_hardirqs_off(void)
-{
- trace_hardirqs_off();
-}
-NOKPROBE_SYMBOL(__trace_hardirqs_off);
diff --git a/arch/riscv/kernel/trace_irq.h b/arch/riscv/kernel/trace_irq.h
deleted file mode 100644
index 99fe67377e5e..000000000000
--- a/arch/riscv/kernel/trace_irq.h
+++ /dev/null
@@ -1,11 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Copyright (C) 2022 Changbin Du <changbin.du@gmail.com>
- */
-#ifndef __TRACE_IRQ_H
-#define __TRACE_IRQ_H
-
-void __trace_hardirqs_on(void);
-void __trace_hardirqs_off(void);
-
-#endif /* __TRACE_IRQ_H */
--
2.34.1
next prev parent reply other threads:[~2022-09-25 18:03 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-25 17:53 [PATCH 0/4] riscv: entry: further clean up and VMAP_STACK fix Jisheng Zhang
2022-09-25 17:53 ` Jisheng Zhang [this message]
2022-09-25 23:18 ` [PATCH 1/4] riscv: remove extra level wrappers of trace_hardirqs_{on,off} Guo Ren
2022-09-25 17:53 ` [PATCH 2/4] riscv: consolidate ret_from_kernel_thread into ret_from_fork Jisheng Zhang
2022-09-25 23:25 ` Guo Ren
2022-09-26 16:05 ` Jisheng Zhang
2022-09-26 23:55 ` Guo Ren
2022-09-28 16:40 ` Jisheng Zhang
2022-09-30 11:42 ` Guo Ren
2022-09-25 17:53 ` [PATCH 3/4] riscv: fix race when vmap stack overflow and remove shadow_stack Jisheng Zhang
2022-09-25 23:46 ` Guo Ren
2022-09-27 0:18 ` Jisheng Zhang
2022-09-27 2:00 ` Guo Ren
2022-11-23 17:02 ` Deepak Gupta
2022-09-25 17:53 ` [PATCH 4/4] riscv: entry: consolidate general regs saving into save_gp Jisheng Zhang
2022-09-25 23:29 ` Guo Ren
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