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Date: Thu, 15 Nov 2007 19:43:34 +0100 From: Sam Ravnborg <sam@...nborg.org> To: "Eric W. Biederman" <ebiederm@...ssion.com> Cc: "Denis V. Lunev" <den@...ru>, "Denis V. Lunev" <den@...nvz.org>, davem@...emloft.net, containers@...ts.osdl.org, netdev@...r.kernel.org, clg@...ibm.com, benjamin.thery@...l.net Subject: Re: [PATCH 2/2] move unneeded data to initdata section On Thu, Nov 15, 2007 at 11:19:26AM -0700, Eric W. Biederman wrote: > Sam Ravnborg <sam@...nborg.org> writes: > > > On Thu, Nov 15, 2007 at 05:42:04PM +0300, Denis V. Lunev wrote: > >> > >> nothing is discarded after module load. Though, I can be wrong. Could > >> you point me to the exact place? > > If __initdata is not discarded after module load then we should do it. > > There is no reason to waste __initdata RAM when the module is loaded. > > Down at the bottom of sys_init_module we have: > > /* Drop initial reference. */ > module_put(mod); > unwind_remove_table(mod->unwind_info, 1); > > module_free(mod, mod->module_init); > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ > mod->module_init = NULL; > mod->init_size = 0; > mod->init_text_size = 0; > mutex_unlock(&module_mutex); > > return 0; > > Which frees the memory for the .init sections. Thanks for clarifying this Eric - should have looked myself.. Sam - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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