On Mon, Sep 2, 2013 at 7:31 PM, Catalin Marinas <catalin.mari...@arm.com> wrote: > On 31 August 2013 14:35, Martin MOKREJŠ <mmokr...@gmail.com> wrote: >> never realized that my CPUs are gone if I compile into kernel kmemleak. >> Is that really the aim? >> >> CONFIG_HAVE_DEBUG_KMEMLEAK=y >> CONFIG_DEBUG_KMEMLEAK=y >> CONFIG_DEBUG_KMEMLEAK_EARLY_LOG_SIZE=400 >> # CONFIG_DEBUG_KMEMLEAK_TEST is not set >> # CONFIG_DEBUG_KMEMLEAK_DEFAULT_OFF is not set >> >> 1. Why isn't there /sys/devices/system/cpu/cpu0/online file? >> Does not matter if it contains 0 or 1. It just should exist. > > I can't really see how kmemleak would do this, maybe other config > options that get set/cleared in the process of selecting kmemleak. Can
Seems to be kmemcheck: from arch/x86/mm/kmemcheck/kmemcheck.c: int __init kmemcheck_init(void) { #ifdef CONFIG_SMP /* * Limit SMP to use a single CPU. We rely on the fact that this code * runs before SMP is set up. */ if (setup_max_cpus > 1) { printk(KERN_INFO "kmemcheck: Limiting number of CPUs to 1.\n"); setup_max_cpus = 1; } #endif -- Thanks. -- Max -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/