From 1b3aae90c6abdf8a844da2aa4aed1eb6947a7d39 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Tue, 27 Nov 2018 10:31:03 -0300 Subject: [PATCH] perf top: Allow passing a kallsyms file This basically replicates what was done for 'perf report' in: b226a5a72901 ("perf report: Allow user to specify path to kallsyms file") This should help with resolving eBPF symbols, that are in kallsyms but, of course, not in vmlinux. Reported-by: Ivan Babrou Tested-by: Ivan Babrou Cc: Adrian Hunter Cc: Alexei Starovoitov Cc: Daniel Borkmann Cc: David Ahern Cc: David S. Miller Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: https://lkml.kernel.org/n/tip-x52mx1ybq8128rtg9hjrj5qk@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Documentation/perf-top.txt | 3 +++ tools/perf/builtin-top.c | 2 ++ 2 files changed, 5 insertions(+) diff --git a/tools/perf/Documentation/perf-top.txt b/tools/perf/Documentation/perf-top.txt index 808b664343c9..44d89fb9c788 100644 --- a/tools/perf/Documentation/perf-top.txt +++ b/tools/perf/Documentation/perf-top.txt @@ -70,6 +70,9 @@ Default is to monitor all CPUS. --ignore-vmlinux:: Ignore vmlinux files. +--kallsyms=:: + kallsyms pathname + -m :: --mmap-pages=:: Number of mmap data pages (must be a power of two) or size diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index aa0c73e57924..1252d1759064 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -1289,6 +1289,8 @@ int cmd_top(int argc, const char **argv) "file", "vmlinux pathname"), OPT_BOOLEAN(0, "ignore-vmlinux", &symbol_conf.ignore_vmlinux, "don't load vmlinux even if found"), + OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name, + "file", "kallsyms pathname"), OPT_BOOLEAN('K', "hide_kernel_symbols", &top.hide_kernel_symbols, "hide kernel symbols"), OPT_CALLBACK('m', "mmap-pages", &opts->mmap_pages, "pages",