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Message-Id: <1391845840-28514-3-git-send-email-ak@linux.intel.com> Date: Sat, 8 Feb 2014 08:50:37 +0100 From: Andi Kleen <ak@...ux.intel.com> To: mmarek@...e.cz Cc: linux-kernel@...r.kernel.org, linux-kbuild@...r.kernel.org, Andi Kleen <ak@...ux.intel.com> Subject: [PATCH 3/6] kbuild: Don't include const variable in kallsyms with !KALLSYMS_ALL const variables are put into the text segment, so !KALLSYMS_ALL includes them into the kallsyms section. Remove them to make the kallsyms smaller. This also avoids some problems with LTO. The way LTO generates the first pass kallsyms cannot handle variables currently, so if we don't filter them out the first and second level pass differ too much. Signed-off-by: Andi Kleen <ak@...ux.intel.com> --- scripts/kallsyms.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/scripts/kallsyms.c b/scripts/kallsyms.c index ceef756..d79027e 100644 --- a/scripts/kallsyms.c +++ b/scripts/kallsyms.c @@ -151,6 +151,11 @@ static int read_symbol(FILE *in, struct sym_entry *s) /* exclude debugging symbols */ else if (stype == 'N') return -1; + /* Don't include const symbols in the text section + * unless --all-symbols is specified. + */ + else if (toupper(stype) != 'T' && !all_symbols) + return -1; /* include the type field in the symbol name, so that it gets * compressed together */ -- 1.8.5.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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