From 6e557a6adfdbb511dbfa7a0a4aa2148f76a01c6d Mon Sep 17 00:00:00 2001 From: David Ahern Date: Mon, 6 Feb 2012 15:27:52 -0700 Subject: perf record: No build id option fails A recent refactoring of perf-record introduced the following: perf record -a -B Couldn't generating buildids. Use --no-buildid to profile anyway. sleep: Terminated I believe the triple negative was meant to be only a double negative. :-) While I'm there, fixed the grammar on the error message. Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Robert Richter Cc: Thomas Gleixner Link: http://lkml.kernel.org/r/1328567272-13190-1-git-send-email-dsahern@gmail.com Signed-off-by: David Ahern Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-record.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'tools/perf/builtin-record.c') diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 0abfb18b911f..39b6a4067f88 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -503,9 +503,9 @@ static int __cmd_record(struct perf_record *rec, int argc, const char **argv) return err; } - if (!!rec->no_buildid + if (!rec->no_buildid && !perf_header__has_feat(&session->header, HEADER_BUILD_ID)) { - pr_err("Couldn't generating buildids. " + pr_err("Couldn't generate buildids. " "Use --no-buildid to profile anyway.\n"); return -1; } -- cgit v1.2.1 From bc76efe64533305b55d1f0834fd03414da8a12b2 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Tue, 14 Feb 2012 14:05:30 -0200 Subject: perf tools: Handle kernels that don't support attr.exclude_{guest,host} Just fall back to resetting those fields, if set, warning the user that that feature is not available. If guest samples appear they will just be discarded because no struct machine will be found and thus the event will be accounted as not handled and dropped, see 0c09571. Reported-by: Namhyung Kim Tested-by: Joerg Roedel Cc: David Ahern Cc: Frederic Weisbecker Cc: Joerg Roedel Cc: Mike Galbraith Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-vuwxig36mzprl5n7nzvnxxsh@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-record.c | 29 ++++++++++++++++++++--------- 1 file changed, 20 insertions(+), 9 deletions(-) (limited to 'tools/perf/builtin-record.c') diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 39b6a4067f88..227b6ae99785 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -204,6 +204,9 @@ static void perf_record__open(struct perf_record *rec) if (opts->group && pos != first) group_fd = first->fd; +fallback_missing_features: + if (opts->exclude_guest_missing) + attr->exclude_guest = attr->exclude_host = 0; retry_sample_id: attr->sample_id_all = opts->sample_id_all_avail ? 1 : 0; try_again: @@ -217,15 +220,23 @@ try_again: } else if (err == ENODEV && opts->cpu_list) { die("No such device - did you specify" " an out-of-range profile CPU?\n"); - } else if (err == EINVAL && opts->sample_id_all_avail) { - /* - * Old kernel, no attr->sample_id_type_all field - */ - opts->sample_id_all_avail = false; - if (!opts->sample_time && !opts->raw_samples && !time_needed) - attr->sample_type &= ~PERF_SAMPLE_TIME; - - goto retry_sample_id; + } else if (err == EINVAL) { + if (!opts->exclude_guest_missing && + (attr->exclude_guest || attr->exclude_host)) { + pr_debug("Old kernel, cannot exclude " + "guest or host samples.\n"); + opts->exclude_guest_missing = true; + goto fallback_missing_features; + } else if (opts->sample_id_all_avail) { + /* + * Old kernel, no attr->sample_id_type_all field + */ + opts->sample_id_all_avail = false; + if (!opts->sample_time && !opts->raw_samples && !time_needed) + attr->sample_type &= ~PERF_SAMPLE_TIME; + + goto retry_sample_id; + } } /* -- cgit v1.2.1