[Crash-utility] [PATCH v2 05/25] x86_64: modify mach to hide offline cpus' data
mach will display number of cpus and cpus' irq stacks and exception
stacks. This patch can hide offline cpus.
The original output is like below:
<cut>
crash> mach
MACHINE TYPE: x86_64
MEMORY SIZE: 1 GB
CPUS: 4
...
IRQ STACKS:
CPU 0: ffff88003fc00000
CPU 1: ffff88003fc80000
CPU 2: ffff88003fd00000
CPU 3: ffff88003fd80000
STACKFAULT STACK SIZE: 4096
STACKFAULT STACKS:
CPU 0: ffff88003fc04000
CPU 1: ffff88003fc84000
CPU 2: ffff88003fd04000
CPU 3: ffff88003fd84000
..
<cut>
With data of offline cpu hiden, the output is like below:
<cut>
crash> mach
MACHINE TYPE: x86_64
MEMORY SIZE: 1 GB
CPUS: 3
...
IRQ STACKS:
CPU 0: ffff88003fc00000
CPU 1: ffff88003fc80000
CPU 2: <OFFLINE>
CPU 3: ffff88003fd80000
STACKFAULT STACK SIZE: 4096
STACKFAULT STACKS:
CPU 0: ffff88003fc04000
CPU 1: ffff88003fc84000
CPU 2: <OFFLINE>
CPU 3: ffff88003fd84000
...
<cut>
Signed-off-by: Qiao Nuohan <qiaonuohan(a)cn.fujitsu.com>
---
x86_64.c | 18 +++++++++++++-----
1 file changed, 13 insertions(+), 5 deletions(-)
diff --git a/x86_64.c b/x86_64.c
index 19f2d48..69d7ea8 100755
--- a/x86_64.c
+++ b/x86_64.c
@@ -5070,7 +5070,7 @@ x86_64_display_machine_stats(void)
fprintf(fp, " MACHINE TYPE: %s\n", uts->machine);
fprintf(fp, " MEMORY SIZE: %s\n", get_memory_size(buf));
- fprintf(fp, " CPUS: %d\n", kt->cpus);
+ fprintf(fp, " CPUS: %d\n", get_cpus_to_display());
if (!STREQ(kt->hypervisor, "(undetermined)") &&
!STREQ(kt->hypervisor, "bare hardware"))
fprintf(fp, " HYPERVISOR: %s\n", kt->hypervisor);
@@ -5094,8 +5094,12 @@ x86_64_display_machine_stats(void)
fprintf(fp, " IRQ STACKS:\n");
for (c = 0; c < kt->cpus; c++) {
sprintf(buf, "CPU %d", c);
- fprintf(fp, "%22s: %016lx\n",
- buf, machdep->machspec->stkinfo.ibase[c]);
+
+ if (hide_offline_cpu(c))
+ fprintf(fp, "%22s: <OFFLINE>\n", buf);
+ else
+ fprintf(fp, "%22s: %016lx\n",
+ buf, machdep->machspec->stkinfo.ibase[c]);
}
for (i = 0; i < MAX_EXCEPTION_STACKS; i++) {
@@ -5110,8 +5114,12 @@ x86_64_display_machine_stats(void)
if (machdep->machspec->stkinfo.ebase[c][i] == 0)
break;
sprintf(buf, "CPU %d", c);
- fprintf(fp, "%22s: %016lx\n",
- buf, machdep->machspec->stkinfo.ebase[c][i]);
+
+ if (hide_offline_cpu(c))
+ fprintf(fp, "%22s: <OFFLINE>\n", buf);
+ else
+ fprintf(fp, "%22s: %016lx\n",
+ buf, machdep->machspec->stkinfo.ebase[c][i]);
}
}
}
--
1.8.5.3