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/mach-imx/hotplug.c | 47 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 arch/arm/mach-imx/hotplug.c (limited to 'arch/arm/mach-imx/hotplug.c') diff --git a/arch/arm/mach-imx/hotplug.c b/arch/arm/mach-imx/hotplug.c new file mode 100644 index 000000000..e24a46dc5 --- /dev/null +++ b/arch/arm/mach-imx/hotplug.c @@ -0,0 +1,47 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright 2011 Freescale Semiconductor, Inc. + * Copyright 2011 Linaro Ltd. + */ + +#include +#include +#include +#include +#include + +#include "common.h" +#include "hardware.h" + +/* + * platform-specific code to shutdown a CPU + * + * Called with IRQs disabled + */ +void imx_cpu_die(unsigned int cpu) +{ + v7_exit_coherency_flush(louis); + /* + * We use the cpu jumping argument register to sync with + * imx_cpu_kill() which is running on cpu0 and waiting for + * the register being cleared to kill the cpu. + */ + imx_set_cpu_arg(cpu, ~0); + + while (1) + cpu_do_idle(); +} + +int imx_cpu_kill(unsigned int cpu) +{ + unsigned long timeout = jiffies + msecs_to_jiffies(50); + + while (imx_get_cpu_arg(cpu) == 0) + if (time_after(jiffies, timeout)) + return 0; + imx_enable_cpu(cpu, false); + imx_set_cpu_arg(cpu, 0); + if (cpu_is_imx7d()) + imx_gpcv2_set_core1_pdn_pup_by_software(true); + return 1; +} -- cgit v1.3.1