Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932086Ab0LISNH (ORCPT ); Thu, 9 Dec 2010 13:13:07 -0500 Received: from casper.infradead.org ([85.118.1.10]:51414 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756561Ab0LISNE (ORCPT ); Thu, 9 Dec 2010 13:13:04 -0500 From: Arnaldo Carvalho de Melo To: Ingo Molnar Cc: linux-kernel@vger.kernel.org, David Ahern , Arnaldo Carvalho de Melo Subject: [PATCH 01/10] perf report: Allow user to specify path to kallsyms file Date: Thu, 9 Dec 2010 16:12:48 -0200 Message-Id: <1291918376-18261-2-git-send-email-acme@infradead.org> X-Mailer: git-send-email 1.6.2.5 In-Reply-To: <1291918376-18261-1-git-send-email-acme@infradead.org> References: <1291918376-18261-1-git-send-email-acme@infradead.org> X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3581 Lines: 92 From: David Ahern This is useful for analyzing a perf data file on a different system than the one data was collected on and still include symbols from loaded kernel modules in the output. Commiter note: Updated the man page accordingly. LKML-Reference: <1291775986-16475-1-git-send-email-daahern@cisco.com> Signed-off-by: David Ahern Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Documentation/perf-report.txt | 3 +++ tools/perf/builtin-report.c | 2 ++ tools/perf/util/symbol.c | 9 +++++++-- tools/perf/util/symbol.h | 1 + 4 files changed, 13 insertions(+), 2 deletions(-) diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt index 59a1f57..fefea77 100644 --- a/tools/perf/Documentation/perf-report.txt +++ b/tools/perf/Documentation/perf-report.txt @@ -104,6 +104,9 @@ OPTIONS --vmlinux=:: vmlinux pathname +--kallsyms=:: + kallsyms pathname + -m:: --modules:: Load module symbols. WARNING: This should only be used with -k and diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index 904519f..b6a2a89 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -443,6 +443,8 @@ static const struct option options[] = { "dump raw trace in ASCII"), OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name, "file", "vmlinux pathname"), + OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name, + "file", "kallsyms pathname"), OPT_BOOLEAN('f', "force", &force, "don't complain, do it"), OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules, "load module symbols - WARNING: use only with -k and LIVE kernel"), diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index a348906..f40c076 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -1830,8 +1830,8 @@ static int dso__load_kernel_sym(struct dso *self, struct map *map, const char *kallsyms_filename = NULL; char *kallsyms_allocated_filename = NULL; /* - * Step 1: if the user specified a vmlinux filename, use it and only - * it, reporting errors to the user if it cannot be used. + * Step 1: if the user specified a kallsyms or vmlinux filename, use + * it and only it, reporting errors to the user if it cannot be used. * * For instance, try to analyse an ARM perf.data file _without_ a * build-id, or if the user specifies the wrong path to the right @@ -1844,6 +1844,11 @@ static int dso__load_kernel_sym(struct dso *self, struct map *map, * validation in dso__load_vmlinux and will bail out if they don't * match. */ + if (symbol_conf.kallsyms_name != NULL) { + kallsyms_filename = symbol_conf.kallsyms_name; + goto do_kallsyms; + } + if (symbol_conf.vmlinux_name != NULL) { err = dso__load_vmlinux(self, map, symbol_conf.vmlinux_name, filter); diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h index 038f220..12defbe 100644 --- a/tools/perf/util/symbol.h +++ b/tools/perf/util/symbol.h @@ -72,6 +72,7 @@ struct symbol_conf { show_cpu_utilization, initialized; const char *vmlinux_name, + *kallsyms_name, *source_prefix, *field_sep; const char *default_guest_vmlinux_name, -- 1.6.2.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/