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| author | Nathan Ciobanu <nathan.d.ciobanu@linux.intel.com> | 2018-06-09 01:15:12 +0300 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2018-06-20 20:55:04 +0300 |
| commit | 42dd45209201edb222de5f9eadc1c8f93700ef28 (patch) | |
| tree | 6932027a3b20fd4ff1bfabe3656397b0abe7d0dc | |
| parent | 4c2122d42116ebaa1665ad0fbef2c558fdc0e3c6 (diff) | |
| download | linux-42dd45209201edb222de5f9eadc1c8f93700ef28.tar.xz | |
tools/power turbostat: fix segfault on 'no node' machines
Running turbostat on machines that don't expose nodes
in sysfs (no /sys/bus/node) causes a segfault or a -nan
value diesplayed in the log. This is caused by
physical_node_id being reported as -1 and logical_node_id
being calculated as a negative number resulting in the new
GET_THREAD/GET_CORE returning an incorrect address.
Signed-off-by: Nathan Ciobanu <nathan.d.ciobanu@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
| -rw-r--r-- | tools/power/x86/turbostat/turbostat.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c index 3bc2c9d94739..97cc00a9c763 100644 --- a/tools/power/x86/turbostat/turbostat.c +++ b/tools/power/x86/turbostat/turbostat.c @@ -2492,6 +2492,12 @@ void set_node_data(void) if (pni[pkg].count > topo.nodes_per_pkg) topo.nodes_per_pkg = pni[0].count; + /* Fake 1 node per pkg for machines that don't + * expose nodes and thus avoid -nan results + */ + if (topo.nodes_per_pkg == 0) + topo.nodes_per_pkg = 1; + for (cpu = 0; cpu < topo.num_cpus; cpu++) { pkg = cpus[cpu].physical_package_id; node = cpus[cpu].physical_node_id; @@ -4904,6 +4910,13 @@ void init_counter(struct thread_data *thread_base, struct core_data *core_base, struct core_data *c; struct pkg_data *p; + + /* Workaround for systems where physical_node_id==-1 + * and logical_node_id==(-1 - topo.num_cpus) + */ + if (node_id < 0) + node_id = 0; + t = GET_THREAD(thread_base, thread_id, core_id, node_id, pkg_id); c = GET_CORE(core_base, core_id, node_id, pkg_id); p = GET_PKG(pkg_base, pkg_id); |