Commit-ID: bb3f0a52630c84807fca9bdd76ac2f5dcec82689
Gitweb: http://git.kernel.org/tip/bb3f0a52630c84807fca9bdd76ac2f5dcec82689
Author: Dou Liyang <douly.fnst@xxxxxxxxxxxxxx>
AuthorDate: Tue, 28 Feb 2017 13:50:52 +0800
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Wed, 1 Mar 2017 10:09:08 +0100
x86/apic: Fix a warning message in logical CPU IDs allocation
The current warning message in allocate_logical_cpuid() is somewhat confusing:
Only 1 processors supported.Processor 2/0x2 and the rest are ignored.
As it might imply that there's only one CPU in the system - while what we ran
into here is a kernel limitation.
Fix the warning message to clarify all that:
APIC: NR_CPUS/possible_cpus limit of 2 reached. Processor 2/0x2 and the rest are ignored.
( Also update the error return from -1 to -EINVAL, which is the more
canonical return value. )
Signed-off-by: Dou Liyang <douly.fnst@xxxxxxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: bp@xxxxxxxxx
Cc: nicstange@xxxxxxxxx
Cc: wanpeng.li@xxxxxxxxxxx
Link: http://lkml.kernel.org/r/1488261052-25753-1-git-send-email-douly.fnst@xxxxxxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
arch/x86/kernel/apic/apic.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index 4261b32..11088b8 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -2062,10 +2062,10 @@ static int allocate_logical_cpuid(int apicid)
/* Allocate a new cpuid. */
if (nr_logical_cpuids >= nr_cpu_ids) {
- WARN_ONCE(1, "Only %d processors supported."
+ WARN_ONCE(1, "APIC: NR_CPUS/possible_cpus limit of %i reached. "
"Processor %d/0x%x and the rest are ignored.\n",
- nr_cpu_ids - 1, nr_logical_cpuids, apicid);
- return -1;
+ nr_cpu_ids, nr_logical_cpuids, apicid);
+ return -EINVAL;
}
cpuid_to_apicid[nr_logical_cpuids] = apicid;
--
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