Problem: On power syatems "lscpu frequency-info" command was always
reading CPU0 max and min frequencies. If CPU0 is guarded or offline
then it used to display max and min frequencies as NULL.
Solution: This patch will check for the available/online CPUs
and read the max/min frequencies of that CPU
Test Results:
Before Patch:
#lscpu (CPU0 is guarded/offline)
Architecture: ppc64le
Byte Order: Little Endian
CPU(s): 120
On-line CPU(s) list: 8-127
Thread(s) per core: 8
Core(s) per socket: 3
Socket(s): 4
NUMA node(s): 4
Model: 2.1 (pvr 004b 0201)
Model name: POWER8E (raw), altivec supported
CPU max MHz: (null)
CPU min MHz: (null)
L1d cache: 64K
L1i cache: 32K
L2 cache: 512K
L3 cache: 8192K
NUMA node0 CPU(s): 8-31
NUMA node1 CPU(s): 32-63
NUMA node16 CPU(s): 64-95
NUMA node17 CPU(s): 96-127
With Patch:
# ./lscpu
Architecture: ppc64le
Byte Order: Little Endian
CPU(s): 120
On-line CPU(s) list: 8-127
Thread(s) per core: 8
Core(s) per socket: 3
Socket(s): 4
NUMA node(s): 4
Model: 2.1 (pvr 004b 0201)
Model name: POWER8E (raw), altivec supported
CPU max MHz: 4322.0000
CPU min MHz: 2061.0000
L1d cache: 64K
L1i cache: 32K
L2 cache: 512K
L3 cache: 8192K
NUMA node0 CPU(s): 8-31
NUMA node1 CPU(s): 32-63
NUMA node16 CPU(s): 64-95
NUMA node17 CPU(s): 96-127
Signed-off-by: Mamatha Inamdar <mamatha4@xxxxxxxxxxxxxxxxxx>
---
sys-utils/lscpu.c | 18 +++++++++++++++---
1 file changed, 15 insertions(+), 3 deletions(-)
diff --git a/sys-utils/lscpu.c b/sys-utils/lscpu.c
index 683fd66..7f92b20 100644
--- a/sys-utils/lscpu.c
+++ b/sys-utils/lscpu.c
@@ -1775,7 +1775,7 @@ static void
print_summary(struct lscpu_desc *desc, struct lscpu_modifier *mod)
{
char buf[512];
- int i;
+ int i = 0;
size_t setsize = CPU_ALLOC_SIZE(maxcpus);
print_s(_("Architecture:"), desc->arch);
@@ -1898,9 +1898,21 @@ print_summary(struct lscpu_desc *desc, struct lscpu_modifier *mod)
if (desc->static_mhz)
print_s(_("CPU static MHz:"), desc->static_mhz);
if (desc->maxmhz)
- print_s(_("CPU max MHz:"), desc->maxmhz[0]);
+ for (i = 0; i < desc->ncpuspos; i++) {
+ /*Check for the first online CPU */
+ if (desc->present &&
+ CPU_ISSET(real_cpu_num(desc, i), desc->present))
+ break;
+ }
+ print_s(_("CPU max MHz:"), desc->maxmhz[i]);
if (desc->minmhz)
- print_s(_("CPU min MHz:"), desc->minmhz[0]);
+ for (i = 0; i < desc->ncpuspos; i++) {
+ /*Check for the first online CPU */
+ if (desc->present &&
+ CPU_ISSET(real_cpu_num(desc, i), desc->present))
+ break;
+ }
+ print_s(_("CPU min MHz:"), desc->minmhz[i]);
if (desc->bogomips)
print_s(_("BogoMIPS:"), desc->bogomips);
if (desc->virtflag) {
--
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