From 2ea64d2e3af46b32a17382252d3976e978175baf Mon Sep 17 00:00:00 2001
From: Qiao Nuohan <qiaonuohan@cn.fujitsu.com>
Date: Thu, 2 Oct 2014 10:17:35 +0800
Subject: [PATCH v3 04/21] x86_64: modify mach to indicate offline cpus' data

mach will display number of cpus and cpus' irq stacks and exception
stacks. This patch can indicate data of 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 crash variable offline set to "hide", the output is like below:
<cut>
crash> mach
          MACHINE TYPE: x86_64
           MEMORY SIZE: 1 GB
                  CPUS: 4 [1 OFFLINE]
...
            IRQ STACKS:
                 CPU 0: ffff88003fc00000
                 CPU 1: ffff88003fc80000
                 CPU 2: ffff88003fd00000 <OFFLINE>
                 CPU 3: ffff88003fd80000
 STACKFAULT STACK SIZE: 4096
     STACKFAULT STACKS:
                 CPU 0: ffff88003fc04000
                 CPU 1: ffff88003fc84000
                 CPU 2: ffff88003fd04000 <OFFLINE>
                 CPU 3: ffff88003fd84000
...
<cut>

Signed-off-by: Qiao Nuohan <qiaonuohan@cn.fujitsu.com>
---
 x86_64.c | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)

diff --git a/x86_64.c b/x86_64.c
index a076b02..9ff57d6 100755
--- a/x86_64.c
+++ b/x86_64.c
@@ -5047,7 +5047,8 @@ 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 [%d OFFLINE]\n", kt->cpus,
+		kt->cpus - get_cpus_to_display());
 	if (!STREQ(kt->hypervisor, "(undetermined)") &&
 	    !STREQ(kt->hypervisor, "bare hardware"))
 		fprintf(fp, "            HYPERVISOR: %s\n",  kt->hypervisor);
@@ -5071,8 +5072,14 @@ 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", 
+		
+		fprintf(fp, "%22s: %016lx",
 			buf, machdep->machspec->stkinfo.ibase[c]);
+
+		if (hide_offline_cpu(c))
+			fprintf(fp, " [OFFLINE]\n");
+		else
+			fprintf(fp, "\n");
 	}
 
 	for (i = 0; i < MAX_EXCEPTION_STACKS; i++) {
@@ -5087,8 +5094,14 @@ 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", 
+
+			fprintf(fp, "%22s: %016lx",
 				buf, machdep->machspec->stkinfo.ebase[c][i]);
+
+			if (hide_offline_cpu(c))
+				fprintf(fp, " [OFFLINE]\n");
+			else
+				fprintf(fp, "\n");
 		}
 	}
 }
-- 
1.8.5.3