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/arm/lib/io-readsl.S | 76 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 76 insertions(+) create mode 100644 arch/arm/lib/io-readsl.S (limited to 'arch/arm/lib/io-readsl.S') diff --git a/arch/arm/lib/io-readsl.S b/arch/arm/lib/io-readsl.S new file mode 100644 index 000000000..d9f6b372b --- /dev/null +++ b/arch/arm/lib/io-readsl.S @@ -0,0 +1,76 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * linux/arch/arm/lib/io-readsl.S + * + * Copyright (C) 1995-2000 Russell King + */ +#include +#include + +ENTRY(__raw_readsl) + teq r2, #0 @ do we have to check for the zero len? + reteq lr + ands ip, r1, #3 + bne 3f + + subs r2, r2, #4 + bmi 2f + stmfd sp!, {r4, lr} +1: ldr r3, [r0, #0] + ldr r4, [r0, #0] + ldr ip, [r0, #0] + ldr lr, [r0, #0] + subs r2, r2, #4 + stmia r1!, {r3, r4, ip, lr} + bpl 1b + ldmfd sp!, {r4, lr} +2: movs r2, r2, lsl #31 + ldrcs r3, [r0, #0] + ldrcs ip, [r0, #0] + stmiacs r1!, {r3, ip} + ldrne r3, [r0, #0] + strne r3, [r1, #0] + ret lr + +3: ldr r3, [r0] + cmp ip, #2 + mov ip, r3, get_byte_0 + strb ip, [r1], #1 + bgt 6f + mov ip, r3, get_byte_1 + strb ip, [r1], #1 + beq 5f + mov ip, r3, get_byte_2 + strb ip, [r1], #1 + +4: subs r2, r2, #1 + mov ip, r3, lspull #24 + ldrne r3, [r0] + orrne ip, ip, r3, lspush #8 + strne ip, [r1], #4 + bne 4b + b 8f + +5: subs r2, r2, #1 + mov ip, r3, lspull #16 + ldrne r3, [r0] + orrne ip, ip, r3, lspush #16 + strne ip, [r1], #4 + bne 5b + b 7f + +6: subs r2, r2, #1 + mov ip, r3, lspull #8 + ldrne r3, [r0] + orrne ip, ip, r3, lspush #24 + strne ip, [r1], #4 + bne 6b + + mov r3, ip, get_byte_2 + strb r3, [r1, #2] +7: mov r3, ip, get_byte_1 + strb r3, [r1, #1] +8: mov r3, ip, get_byte_0 + strb r3, [r1, #0] + ret lr +ENDPROC(__raw_readsl) -- cgit v1.3.1