The -q/--quiet option is to suppress any message. Sometimes users just want to run the command and it can be used for that case.
Before: $ perf kallsyms vfs_open no_symbol vfs_open: [kernel] [kernel.kallsyms] 0xffffffff81207b90-0xffffffff81207c00 (0xffffffff81207b90-0xffffffff81207c00) no_symbol: not found After: $ perf kallsyms -q vfs_open no_symbol vfs_open: [kernel] [kernel.kallsyms] 0xffffffff81207b90-0xffffffff81207c00 (0xffffffff81207b90-0xffffffff81207c00) Suggested-by: Arnaldo Carvalho de Melo <[email protected]> Signed-off-by: Namhyung Kim <[email protected]> --- tools/perf/Documentation/perf-kallsyms.txt | 4 ++++ tools/perf/builtin-kallsyms.c | 7 ++++++- 2 files changed, 10 insertions(+), 1 deletion(-) diff --git a/tools/perf/Documentation/perf-kallsyms.txt b/tools/perf/Documentation/perf-kallsyms.txt index 954ea9e21236..c3c2aebb4660 100644 --- a/tools/perf/Documentation/perf-kallsyms.txt +++ b/tools/perf/Documentation/perf-kallsyms.txt @@ -22,3 +22,7 @@ OPTIONS -v:: --verbose=:: Increase verbosity level, showing details about symbol table loading, etc. + +-q:: +--quiet:: + Do not show any message. diff --git a/tools/perf/builtin-kallsyms.c b/tools/perf/builtin-kallsyms.c index 224bfc454b4a..45a8e50a7f21 100644 --- a/tools/perf/builtin-kallsyms.c +++ b/tools/perf/builtin-kallsyms.c @@ -29,7 +29,8 @@ static int __cmd_kallsyms(int argc, const char **argv) struct symbol *symbol = machine__find_kernel_function_by_name(machine, argv[i], &map); if (symbol == NULL) { - printf("%s: not found\n", argv[i]); + if (!quiet) + printf("%s: not found\n", argv[i]); continue; } @@ -47,6 +48,7 @@ int cmd_kallsyms(int argc, const char **argv, const char *prefix __maybe_unused) { const struct option options[] = { OPT_INCR('v', "verbose", &verbose, "be more verbose (show counter open errors, etc)"), + OPT_BOOLEAN('q', "quiet", &quiet, "Do not show any message"), OPT_END() }; const char * const kallsyms_usage[] = { @@ -58,6 +60,9 @@ int cmd_kallsyms(int argc, const char **argv, const char *prefix __maybe_unused) if (argc < 1) usage_with_options(kallsyms_usage, options); + if (quiet) + perf_quiet_option(); + symbol_conf.sort_by_name = true; symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL); if (symbol__init(NULL) < 0) -- 2.11.0
