From 3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Wed, 2 Sep 2026 15:31:14 -0700 Subject: treewide: refresh kmalloc_obj() conversions This is another run of the Coccinelle script for converting kmalloc() family of allocations to kmalloc_obj() via the existing rules in scripts/coccinelle/api/kmalloc_objs.cocci This catches both the set of kmalloc() uses added since the first kmalloc_obj() conversions in v7.0 and adds a large group missed in the first pass due to Coccinelle not interacting well with the cleanup.h scoped_...() family of macros[1]. I worked around this with spatch's "--macro-file" argument to a file with all the scoped_...() macros mapped to Coccinelle's YACFE_ITERATOR[2] as that was the closest viable control flow indicator I could find. Build tested allmodconfig on x86, arm64, arm, loongarch, mips, powerpc, riscv, and s390 with no new warnings. Link: https://lore.kernel.org/lkml/202609021314.8A9C0B8@keescook/ [1] Link: https://github.com/coccinelle/coccinelle/blob/master/standard.h [2] Signed-off-by: Kees Cook --- arch/arm/mach-omap2/omap-hotplug.c | 69 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 69 insertions(+) create mode 100644 arch/arm/mach-omap2/omap-hotplug.c (limited to 'arch/arm/mach-omap2/omap-hotplug.c') diff --git a/arch/arm/mach-omap2/omap-hotplug.c b/arch/arm/mach-omap2/omap-hotplug.c new file mode 100644 index 000000000..8343fcf4f --- /dev/null +++ b/arch/arm/mach-omap2/omap-hotplug.c @@ -0,0 +1,69 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * OMAP4 SMP cpu-hotplug support + * + * Copyright (C) 2010 Texas Instruments, Inc. + * Author: + * Santosh Shilimkar + * + * Platform file needed for the OMAP4 SMP. This file is based on arm + * realview smp platform. + * Copyright (c) 2002 ARM Limited. + */ + +#include +#include +#include +#include + +#include "omap-wakeupgen.h" +#include "common.h" +#include "powerdomain.h" + +/* + * platform-specific code to shutdown a CPU + * Called with IRQs disabled + */ +void omap4_cpu_die(unsigned int cpu) +{ + unsigned int boot_cpu = 0; + void __iomem *base = omap_get_wakeupgen_base(); + + /* + * we're ready for shutdown now, so do it + */ + if (omap_secure_apis_support()) { + if (omap_modify_auxcoreboot0(0x0, 0x200) != 0x0) + pr_err("Secure clear status failed\n"); + } else { + writel_relaxed(0, base + OMAP_AUX_CORE_BOOT_0); + } + + + for (;;) { + /* + * Enter into low power state + */ + omap4_hotplug_cpu(cpu, PWRDM_POWER_OFF); + + if (omap_secure_apis_support()) + boot_cpu = omap_read_auxcoreboot0() >> 9; + else + boot_cpu = + readl_relaxed(base + OMAP_AUX_CORE_BOOT_0) >> 5; + + if (boot_cpu == smp_processor_id()) { + /* + * OK, proper wakeup, we're done + */ + break; + } + pr_debug("CPU%u: spurious wakeup call\n", cpu); + } +} + +/* Needed by kexec and platform_can_cpu_hotplug() */ +int omap4_cpu_kill(unsigned int cpu) +{ + return 1; +} -- cgit v1.3.1