From 0102c8c7fdfc4bd700971daff2b94470f4eafae4 Mon Sep 17 00:00:00 2001 From: Dapeng Mi Date: Thu, 17 Sep 2026 09:52:33 +0800 Subject: perf/x86/intel: Rename DMR offcore_rsp attribute to offmodule_rsp DMR introduces Offmodule Response events in place of the legacy Offcore Response events, but it still exposes the inherited offcore_rsp PMU attribute for programming the corresponding MSR data. Rename the DMR PMU attribute to offmodule_rsp so the sysfs interface matches the underlying event name and avoids user & tooling confusion. Signed-off-by: Dapeng Mi Signed-off-by: Peter Zijlstra (Intel) Signed-off-by: Ingo Molnar Link: https://patch.msgid.link/20260917015234.981153-12-dapeng1.mi@linux.intel.com --- arch/riscv/lib/ashrdi3.S | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 arch/riscv/lib/ashrdi3.S (limited to 'arch/riscv/lib/ashrdi3.S') diff --git a/arch/riscv/lib/ashrdi3.S b/arch/riscv/lib/ashrdi3.S new file mode 100644 index 000000000..426de0946 --- /dev/null +++ b/arch/riscv/lib/ashrdi3.S @@ -0,0 +1,36 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/** + * Adopted for the Linux kernel from IPXE project, see + * https://github.com/ipxe/ipxe/blob/master/src/arch/riscv32/libgcc/llshift.S + */ + +#include +#include + +/** + * Arithmetic shift right + * + * @v a1:a0 Value to shift + * @v a2 Shift amount + * @ret a1:a0 Shifted value + */ + +SYM_FUNC_START(__ashrdi3) + + /* Perform shift by 32 bits, if applicable */ + li t0, 32 + sub t1, t0, a2 + bgtz t1, 1f + mv a0, a1 + srai a1, a1, 31 +1: /* Perform shift by modulo-32 bits, if applicable */ + andi a2, a2, 0x1f + beqz a2, 2f + sll t2, a1, t1 + sra a1, a1, a2 + srl a0, a0, a2 + or a0, a0, t2 +2: ret + +SYM_FUNC_END(__ashrdi3) +EXPORT_SYMBOL(__ashrdi3) -- cgit v1.3.1