p71924506
/
linux_old1
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

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>
This commit is contained in:
Nathan Ciobanu 2018-06-08 15:15:12 -07:00 committed by Len Brown
parent 4c2122d421
commit 42dd452092
1 changed files with 13 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
tools/power/x86/turbostat/turbostat.c
View File

@ -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);