command p can be used to display data of per-cpu symbol. This patch is
used to hide data of offline cpus.
The original output is like below:
<cut>
crash> p cpu_number:a
per_cpu(cpu_number, 0) = $1 = 0
per_cpu(cpu_number, 1) = $2 = 1
per_cpu(cpu_number, 2) = $3 = 2
per_cpu(cpu_number, 3) = $4 = 3
<cut>
With data of offline cpu(cpu #2) hiden, the output is like below:
<cut>
crash> p cpu_number:a
per_cpu(cpu_number, 0) = $1 = 0
per_cpu(cpu_number, 1) = $2 = 1
cpu 2 is OFFLINE.
per_cpu(cpu_number, 3) = $3 = 3
<cut>
Signed-off-by: Qiao Nuohan <qiaonuohan@xxxxxxxxxxxxxx>
---
symbols.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/symbols.c b/symbols.c
index 11bae02..36031c6 100755
--- a/symbols.c
+++ b/symbols.c
@@ -6847,6 +6847,11 @@ display_per_cpu_info(struct syment *sp, int radix, char *cpuspec)
module_symbol(sp->value, NULL, NULL, NULL, *gdb_output_radix);
for (c = 0; c < kt->cpus; c++) {
+ if (hide_offline_cpu(c)) {
+ fprintf(fp, "cpu %d is OFFLINE.\n", c);
+ continue;
+ }
+
if (cpus && !NUM_IN_BITMAP(cpus, c))
continue;
addr = sp->value + kt->__per_cpu_offset[c];
--
1.8.5.3
--
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