Commit-ID: bfb33bad83f650f265ed65cbfe8352b7c3ce8c76 Gitweb: http://git.kernel.org/tip/bfb33bad83f650f265ed65cbfe8352b7c3ce8c76 Author: Luis R. Rodriguez <mcg...@suse.com> AuthorDate: Wed, 4 Mar 2015 17:24:13 -0800 Committer: Ingo Molnar <mi...@kernel.org> CommitDate: Thu, 5 Mar 2015 08:02:12 +0100
init.h: Add early_param_on_off() At times all you need is a kconfig variable to enable a feature, by default but you may want to also enable / disable it through a kernel parameter. In such cases the parameter routines to turn the thing on / off are really simple. Just use a wrapper for this, it lets us generalize the code and makes it easier to associate parameters with related kernel configuration options. Signed-off-by: Luis R. Rodriguez <mcg...@suse.com> Cc: Andrew Morton <a...@linux-foundation.org> Cc: Andy Lutomirski <l...@amacapital.net> Cc: Borislav Petkov <b...@alien8.de> Cc: Borislav Petkov <b...@suse.de> Cc: Dave Hansen <dave.han...@linux.intel.com> Cc: David Vrabel <david.vra...@citrix.com> Cc: Dexuan Cui <de...@microsoft.com> Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org> Cc: H. Peter Anvin <h...@zytor.com> Cc: jbeul...@suse.com Cc: Jan Beulich <jbeul...@suse.com> Cc: Joonsoo Kim <iamjoonsoo....@lge.com> Cc: Juergen Gross <jgr...@suse.com> Cc: Linus Torvalds <torva...@linux-foundation.org> Cc: Pavel Machek <pa...@ucw.cz> Cc: Thomas Gleixner <t...@linutronix.de> Cc: Tony Lindgren <t...@atomide.com> Cc: Toshi Kani <toshi.k...@hp.com> Cc: Vlastimil Babka <vba...@suse.cz> Cc: Xishi Qiu <qiuxi...@huawei.com> Cc: julia.law...@lip6.fr Link: http://lkml.kernel.org/r/1425518654-3403-4-git-send-email-mcg...@do-not-panic.com Signed-off-by: Ingo Molnar <mi...@kernel.org> --- include/linux/init.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/include/linux/init.h b/include/linux/init.h index 2df8e8d..bc11ff9 100644 --- a/include/linux/init.h +++ b/include/linux/init.h @@ -268,6 +268,21 @@ struct obs_kernel_param { #define early_param(str, fn) \ __setup_param(str, fn, fn, 1) +#define early_param_on_off(str_on, str_off, var, config) \ + int var = IS_ENABLED(config); \ + static int __init parse_##var##_on(char *arg) \ + { \ + var = 1; \ + return 0; \ + } \ + static int __init parse_##var##_off(char *arg) \ + { \ + var = 0; \ + return 0; \ + } \ + __setup_param(str_on, parse_##var##_on, parse_##var##_on, 1); \ + __setup_param(str_off, parse_##var##_off, parse_##var##_off, 1) + /* Relies on boot_command_line being set */ void __init parse_early_param(void); void __init parse_early_options(char *cmdline); -- 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/
