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-tegra/hotplug.c | 74 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 74 insertions(+) create mode 100644 arch/arm/mach-tegra/hotplug.c (limited to 'arch/arm/mach-tegra/hotplug.c') diff --git a/arch/arm/mach-tegra/hotplug.c b/arch/arm/mach-tegra/hotplug.c new file mode 100644 index 000000000..5c907c2c0 --- /dev/null +++ b/arch/arm/mach-tegra/hotplug.c @@ -0,0 +1,74 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2002 ARM Ltd. + * All Rights Reserved + * Copyright (c) 2010, 2012-2013, NVIDIA Corporation. All rights reserved. + */ + +#include +#include +#include + +#include +#include + +#include + +#include "common.h" +#include "sleep.h" + +static void (*tegra_hotplug_shutdown)(void); + +int tegra_cpu_kill(unsigned cpu) +{ + cpu = cpu_logical_map(cpu); + + /* Clock gate the CPU */ + tegra_wait_cpu_in_reset(cpu); + tegra_disable_cpu_clock(cpu); + + return 1; +} + +/* + * platform-specific code to shutdown a CPU + * + * Called with IRQs disabled + */ +void tegra_cpu_die(unsigned int cpu) +{ + if (!tegra_hotplug_shutdown) { + WARN(1, "hotplug is not yet initialized\n"); + return; + } + + /* Clean L1 data cache */ + tegra_disable_clean_inv_dcache(TEGRA_FLUSH_CACHE_LOUIS); + + /* Shut down the current CPU. */ + tegra_hotplug_shutdown(); + + /* Should never return here. */ + BUG(); +} + +static int __init tegra_hotplug_init(void) +{ + if (!IS_ENABLED(CONFIG_HOTPLUG_CPU)) + return 0; + + if (!soc_is_tegra()) + return 0; + + if (IS_ENABLED(CONFIG_ARCH_TEGRA_2x_SOC) && tegra_get_chip_id() == TEGRA20) + tegra_hotplug_shutdown = tegra20_hotplug_shutdown; + if (IS_ENABLED(CONFIG_ARCH_TEGRA_3x_SOC) && tegra_get_chip_id() == TEGRA30) + tegra_hotplug_shutdown = tegra30_hotplug_shutdown; + if (IS_ENABLED(CONFIG_ARCH_TEGRA_114_SOC) && tegra_get_chip_id() == TEGRA114) + tegra_hotplug_shutdown = tegra30_hotplug_shutdown; + if (IS_ENABLED(CONFIG_ARCH_TEGRA_124_SOC) && tegra_get_chip_id() == TEGRA124) + tegra_hotplug_shutdown = tegra30_hotplug_shutdown; + + return 0; +} +pure_initcall(tegra_hotplug_init); -- cgit v1.3.1