Date: Fri, 18 Jul 2014 10:02:54 GMT From: op@FreeBSD.org To: svn-soc-all@FreeBSD.org Subject: socsvn commit: r271071 - soc2014/op/freebsd-base/sys/kern Message-ID: <201407181002.s6IA2set041165@socsvn.freebsd.org>
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Author: op Date: Fri Jul 18 10:02:54 2014 New Revision: 271071 URL: http://svnweb.FreeBSD.org/socsvn/?view=rev&rev=271071 Log: KSP: added debug code Signed-off-by: Oliver Pinter <oliver.pntr@gmail.com> git: https://github.com/opntr/opBSD/tree/op/gsoc2014/kpatch Modified: soc2014/op/freebsd-base/sys/kern/kern_selfpatch.c Modified: soc2014/op/freebsd-base/sys/kern/kern_selfpatch.c ============================================================================== --- soc2014/op/freebsd-base/sys/kern/kern_selfpatch.c Fri Jul 18 08:23:53 2014 (r271070) +++ soc2014/op/freebsd-base/sys/kern/kern_selfpatch.c Fri Jul 18 10:02:54 2014 (r271071) @@ -38,12 +38,13 @@ #include <sys/linker.h> #include <sys/linker_set.h> #include <sys/selfpatch.h> +#include <sys/sysctl.h> #include <machine/md_var.h> #include <machine/specialreg.h> #define DBG(...) \ - if (bootverbose) { \ + if (selfpatch_debug) { \ printf("%s: ", __func__); \ printf(__VA_ARGS__); \ } @@ -51,13 +52,18 @@ extern struct lf_selfpatch __start_set_ksp_kpatch_set[]; extern struct lf_selfpatch __stop_set_ksp_kpatch_set[]; +static int selfpatch_debug=1; +SYSCTL_INT(_debug, OID_AUTO, selfpatch_debug, CTLFLAG_RWTUN, + &selfpatch_debug, 0, "Set various levels of selfpatch debug"); bool lf_selfpatch_patch_needed(struct lf_selfpatch *p) { - if (p == NULL) - return (false); + if (p == NULL) { + DBG("false\n"); + return (false); + } switch (p->feature_selector) { case KSP_CPU_FEATURE : @@ -134,5 +140,7 @@ KASSERT(p->patch_size == p->patchable_size, ("%s: patch_size != patchable_size", __func__)); + DBG("%p\n", p->patch); + memcpy(p->patchable, p->patch, p->patchable_size); }
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