From: Cody P Schafer <cody@linux.vnet.ibm.com>
To: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: LKML <linux-kernel@vger.kernel.org>,
Ingo Molnar <mingo@redhat.com>, Paul Mackerras <paulus@samba.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>,
Matt Hellsley <matthltc@us.ibm.com>,
David Hansen <dave@linux.vnet.ibm.com>
Subject: [PATCH 01/16] perf symbol: correct comment wrt kallsyms loading
Date: Thu, 9 Aug 2012 15:18:26 -0700 [thread overview]
Message-ID: <1344550721-21024-2-git-send-email-cody@linux.vnet.ibm.com> (raw)
In-Reply-To: <1344550721-21024-1-git-send-email-cody@linux.vnet.ibm.com>
In kallsyms_parse() when calling process_symbol() (a callback argument
to kallsyms_parse()), we pass start as both start & end (ie:
start=start, end=start).
In map__process_kallsym_symbol(), the length is calculated as 'end - start + 1',
making the length 1, not 0.
Essentially, start & end define an inclusive range.
Signed-off-by: Cody P Schafer <cody@linux.vnet.ibm.com>
---
tools/perf/util/symbol.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 07e7bd6..df4736d 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -616,7 +616,7 @@ int kallsyms__parse(const char *filename, void *arg,
/*
* module symbols are not sorted so we add all
- * symbols with zero length and rely on
+ * symbols, setting length to 1, and rely on
* symbols__fixup_end() to fix it up.
*/
err = process_symbol(arg, symbol_name,
--
1.7.11.3
next prev parent reply other threads:[~2012-08-09 22:22 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-09 22:18 [PATCH 0/16] perf: various symbol resolution fixes, including .opd section use Cody P Schafer
2012-08-09 22:18 ` Cody P Schafer [this message]
2012-08-09 22:18 ` [PATCH 02/16] perf symbol: remove unused 'end' arg in kallsyms parse cb Cody P Schafer
2012-08-10 2:39 ` Namhyung Kim
2012-08-10 17:11 ` Cody P Schafer
2012-08-09 22:18 ` [PATCH 03/16] perf symbol: only un-prelink non-zero symbols Cody P Schafer
2012-08-09 22:18 ` [PATCH 04/16] perf utils: remove unused function map__objdump_2ip Cody P Schafer
2012-08-09 22:18 ` [PATCH 05/16] perf symbol: don't try to synthesize plt without dynstr Cody P Schafer
2012-08-09 22:18 ` [PATCH 06/16] perf symbol: remove unneeded call to dso__set_long_name() Cody P Schafer
2012-08-09 22:18 ` [PATCH 07/16] perf symbol: symplify out_fixup in kernel syms loading Cody P Schafer
2012-08-09 22:18 ` [PATCH 08/16] perf symbol: only set vmlinux longname & mark loaded if really loaded Cody P Schafer
2012-08-09 22:18 ` [PATCH 09/16] perf symbol: avoid segfault in elf_strptr Cody P Schafer
2012-08-09 22:18 ` [PATCH 10/16] perf symbol: track symtab_type of vmlinux Cody P Schafer
2012-08-09 22:18 ` [PATCH 11/16] perf symbol: introduce symsrc structure Cody P Schafer
2012-08-09 22:18 ` [PATCH 12/16] perf symbol: set symtab_type in dso__load_sym Cody P Schafer
2012-08-09 22:18 ` [PATCH 13/16] perf symbol: switch dso__synthesize_plt_symbols() to use symsrc Cody P Schafer
2012-08-09 22:18 ` [PATCH 14/16] perf symbol: factor want_symtab out of dso__load_sym() Cody P Schafer
2012-08-09 22:18 ` [PATCH 15/16] perf symbol: convert dso__load_syms to take 2 symsrc's Cody P Schafer
2012-08-09 22:18 ` [PATCH 16/16] perf symbol: use both runtime and debug images Cody P Schafer
2012-08-10 22:22 [PATCH v2 00/16] perf: various symbol resolution fixes, including .opd section use Cody P Schafer
2012-08-10 22:22 ` [PATCH 01/16] perf symbol: correct comment wrt kallsyms loading Cody P Schafer
2012-08-11 13:14 ` Namhyung Kim
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