lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Wed, 27 Jan 2021 16:57:40 -0800 From: Andrew Morton <akpm@...ux-foundation.org> To: vjitta@...eaurora.org Cc: minchan@...nel.org, glider@...gle.com, dan.j.williams@...el.com, broonie@...nel.org, mhiramat@...nel.org, linux-kernel@...r.kernel.org, ylal@...eaurora.org, vinmenon@...eaurora.org Subject: Re: [PATCH v6 2/2] lib: stackdepot: Add support to disable stack depot On Wed, 27 Jan 2021 17:36:38 +0530 vjitta@...eaurora.org wrote: > Add a kernel parameter stack_depot_disable to disable > stack depot. So that stack hash table doesn't consume > any memory when stack depot is disabled. > > The usecase is CONFIG_PAGE_OWNER without page_owner=on. > Without this patch, stackdepot will consume the memory > for the hashtable. By default, it's 8M which is never trivial. > > With this option, in CONFIG_PAGE_OWNER configured system, > page_owner=off, stack_depot_disable in kernel command line, > we could save the wasted memory for the hashtable. CONFIG_STACKDEPOT=n: main.c:(.init.text+0x4c1): undefined reference to `stack_depot_init' --- a/include/linux/stackdepot.h~lib-stackdepot-add-support-to-disable-stack-depot-fix +++ a/include/linux/stackdepot.h @@ -21,5 +21,13 @@ unsigned int stack_depot_fetch(depot_sta unsigned int filter_irq_stacks(unsigned long *entries, unsigned int nr_entries); +#ifdef CONFIG_STACKDEPOT int stack_depot_init(void); +#else +static inline int stack_depot_init(void) +{ + return 0; +} +#endif /* CONFIG_STACKDEPOT */ + #endif _
Powered by blists - more mailing lists