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    Subject[PATCH 1/4] riscv: remove extra level wrappers of trace_hardirqs_{on,off}
    Date
    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
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