Date: Fri, 18 Jan 2008 21:30:22 GMT From: Kip Macy <kmacy@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 133596 for review Message-ID: <200801182130.m0ILUMDb081965@repoman.freebsd.org>
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http://perforce.freebsd.org/chv.cgi?CH=133596 Change 133596 by kmacy@pandemonium:kmacy:xen31 on 2008/01/18 21:30:00 don't acquire the console lock if we're in the middle of a panic Affected files ... .. //depot/projects/xen31/sys/dev/xen/console/console.c#9 edit Differences ... ==== //depot/projects/xen31/sys/dev/xen/console/console.c#9 (text+ko) ==== @@ -79,8 +79,16 @@ #define CN_LOCK_INIT(x, _name) \ mtx_init(&x, _name, NULL, MTX_SPIN|MTX_RECURSE) -#define CN_LOCK(l) mtx_lock_spin(&(l)) -#define CN_UNLOCK(l) mtx_unlock_spin(&(l)) +#define CN_LOCK(l) \ + do { \ + if (panicstr == NULL) \ + mtx_lock_spin(&(l)); \ + } while (0) +#define CN_UNLOCK(l) \ + do { \ + if (panicstr == NULL) \ + mtx_unlock_spin(&(l)); \ + } while (0) #define CN_LOCK_ASSERT(x) mtx_assert(&x, MA_OWNED) #define CN_LOCK_DESTROY(x) mtx_destroy(&x)
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