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authorLinus Torvalds <torvalds@linux-foundation.org>2013-11-12 10:41:10 +0900
committerLinus Torvalds <torvalds@linux-foundation.org>2013-11-12 10:41:10 +0900
commit014d595c23f33dd8e2a996cc62239fb279047f1b (patch)
tree2bd1ef0341423de2cd312de7407dd9afb59c4e49 /arch
parentae795fe760e20a7c6ad0f2cd24fc31afad73f427 (diff)
parenta17bce4d1dce8f3cf714bc2e5d8e4bac009dc077 (diff)
Merge branch 'x86-boot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 boot changes from Ingo Molnar: "Two changes that prettify and compactify the SMP bootup output from: smpboot: Booting Node 0, Processors #1 #2 #3 OK smpboot: Booting Node 1, Processors #4 #5 #6 #7 OK smpboot: Booting Node 2, Processors #8 #9 #10 #11 OK smpboot: Booting Node 3, Processors #12 #13 #14 #15 OK Brought up 16 CPUs to something like: x86: Booting SMP configuration: .... node #0, CPUs: #1 #2 #3 .... node #1, CPUs: #4 #5 #6 #7 .... node #2, CPUs: #8 #9 #10 #11 .... node #3, CPUs: #12 #13 #14 #15 x86: Booted up 4 nodes, 16 CPUs" * 'x86-boot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/boot: Further compress CPUs bootup message x86: Improve the printout of the SMP bootup CPU table
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/include/asm/misc.h6
-rw-r--r--arch/x86/kernel/smpboot.c37
-rw-r--r--arch/x86/lib/Makefile2
-rw-r--r--arch/x86/lib/misc.c21
4 files changed, 58 insertions, 8 deletions
diff --git a/arch/x86/include/asm/misc.h b/arch/x86/include/asm/misc.h
new file mode 100644
index 000000000000..475f5bbc7f53
--- /dev/null
+++ b/arch/x86/include/asm/misc.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_X86_MISC_H
+#define _ASM_X86_MISC_H
+
+int num_digits(int val);
+
+#endif /* _ASM_X86_MISC_H */
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 6cacab671f9b..2a165580fa16 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -73,11 +73,10 @@
#include <asm/setup.h>
#include <asm/uv/uv.h>
#include <linux/mc146818rtc.h>
-
#include <asm/smpboot_hooks.h>
#include <asm/i8259.h>
-
#include <asm/realmode.h>
+#include <asm/misc.h>
/* State of each CPU */
DEFINE_PER_CPU(int, cpu_state) = { 0 };
@@ -648,22 +647,46 @@ wakeup_secondary_cpu_via_init(int phys_apicid, unsigned long start_eip)
return (send_status | accept_status);
}
+void smp_announce(void)
+{
+ int num_nodes = num_online_nodes();
+
+ printk(KERN_INFO "x86: Booted up %d node%s, %d CPUs\n",
+ num_nodes, (num_nodes > 1 ? "s" : ""), num_online_cpus());
+}
+
/* reduce the number of lines printed when booting a large cpu count system */
static void announce_cpu(int cpu, int apicid)
{
static int current_node = -1;
int node = early_cpu_to_node(cpu);
- int max_cpu_present = find_last_bit(cpumask_bits(cpu_present_mask), NR_CPUS);
+ static int width, node_width;
+
+ if (!width)
+ width = num_digits(num_possible_cpus()) + 1; /* + '#' sign */
+
+ if (!node_width)
+ node_width = num_digits(num_possible_nodes()) + 1; /* + '#' */
+
+ if (cpu == 1)
+ printk(KERN_INFO "x86: Booting SMP configuration:\n");
if (system_state == SYSTEM_BOOTING) {
if (node != current_node) {
if (current_node > (-1))
- pr_cont(" OK\n");
+ pr_cont("\n");
current_node = node;
- pr_info("Booting Node %3d, Processors ", node);
+
+ printk(KERN_INFO ".... node %*s#%d, CPUs: ",
+ node_width - num_digits(node), " ", node);
}
- pr_cont(" #%4d%s", cpu, cpu == max_cpu_present ? " OK\n" : "");
- return;
+
+ /* Add padding for the BSP */
+ if (cpu == 1)
+ pr_cont("%*s", width + 1, " ");
+
+ pr_cont("%*s#%d", width - num_digits(cpu), " ", cpu);
+
} else
pr_info("Booting Node %d Processor %d APIC 0x%x\n",
node, cpu, apicid);
diff --git a/arch/x86/lib/Makefile b/arch/x86/lib/Makefile
index 96b2c6697c9d..992d63bb154f 100644
--- a/arch/x86/lib/Makefile
+++ b/arch/x86/lib/Makefile
@@ -16,7 +16,7 @@ clean-files := inat-tables.c
obj-$(CONFIG_SMP) += msr-smp.o cache-smp.o
-lib-y := delay.o
+lib-y := delay.o misc.o
lib-y += thunk_$(BITS).o
lib-y += usercopy_$(BITS).o usercopy.o getuser.o putuser.o
lib-y += memcpy_$(BITS).o
diff --git a/arch/x86/lib/misc.c b/arch/x86/lib/misc.c
new file mode 100644
index 000000000000..76b373af03f0
--- /dev/null
+++ b/arch/x86/lib/misc.c
@@ -0,0 +1,21 @@
+/*
+ * Count the digits of @val including a possible sign.
+ *
+ * (Typed on and submitted from hpa's mobile phone.)
+ */
+int num_digits(int val)
+{
+ int m = 10;
+ int d = 1;
+
+ if (val < 0) {
+ d++;
+ val = -val;
+ }
+
+ while (val >= m) {
+ m *= 10;
+ d++;
+ }
+ return d;
+}