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| author | Florian Tobias Schandinat <FlorianSchandinat@gmx.de> | 2012-03-20 19:59:50 +0100 |
|---|---|---|
| committer | Florian Tobias Schandinat <FlorianSchandinat@gmx.de> | 2012-03-20 19:59:50 +0100 |
| commit | 44e8ba93cf330f075178e31759100f367313790a (patch) | |
| tree | 27956beb159bfb603d672b43cb207690a087dd0a /tools/perf/builtin-top.c | |
| parent | Merge branch 'for-3.4' of git://gitorious.org/linux-omap-dss2/linux into fbde... (diff) | |
| parent | Linux 3.3 (diff) | |
| download | linux-44e8ba93cf330f075178e31759100f367313790a.tar.xz linux-44e8ba93cf330f075178e31759100f367313790a.zip | |
Merge commit 'v3.3' into fbdev-next
Diffstat (limited to 'tools/perf/builtin-top.c')
| -rw-r--r-- | tools/perf/builtin-top.c | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index dd162aa24baa..ecff31257eb3 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -857,6 +857,9 @@ static void perf_top__start_counters(struct perf_top *top) attr->mmap = 1; attr->comm = 1; attr->inherit = top->inherit; +fallback_missing_features: + if (top->exclude_guest_missing) + attr->exclude_guest = attr->exclude_host = 0; retry_sample_id: attr->sample_id_all = top->sample_id_all_avail ? 1 : 0; try_again: @@ -868,12 +871,20 @@ try_again: if (err == EPERM || err == EACCES) { ui__error_paranoid(); goto out_err; - } else if (err == EINVAL && top->sample_id_all_avail) { - /* - * Old kernel, no attr->sample_id_type_all field - */ - top->sample_id_all_avail = false; - goto retry_sample_id; + } else if (err == EINVAL) { + if (!top->exclude_guest_missing && + (attr->exclude_guest || attr->exclude_host)) { + pr_debug("Old kernel, cannot exclude " + "guest or host samples.\n"); + top->exclude_guest_missing = true; + goto fallback_missing_features; + } else if (top->sample_id_all_avail) { + /* + * Old kernel, no attr->sample_id_type_all field + */ + top->sample_id_all_avail = false; + goto retry_sample_id; + } } /* * If it's cycles then fall back to hrtimer |