This is a note to let you know that I've just added the patch titled
parisc: Fix /proc/cpuinfo output for lscpu
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
parisc-fix-proc-cpuinfo-output-for-lscpu.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 9f5ba4b3e1b3c123eeca5d2d09161e8720048b5c Mon Sep 17 00:00:00 2001
From: Helge Deller <deller@xxxxxx>
Date: Fri, 18 Aug 2023 22:48:04 +0200
Subject: parisc: Fix /proc/cpuinfo output for lscpu
From: Helge Deller <deller@xxxxxx>
commit 9f5ba4b3e1b3c123eeca5d2d09161e8720048b5c upstream.
The lscpu command is broken since commit cab56b51ec0e ("parisc: Fix
device names in /proc/iomem") added the PA pathname to all PA
devices, includig the CPUs.
lscpu parses /proc/cpuinfo and now believes it found different CPU
types since every CPU is listed with an unique identifier (PA
pathname).
Fix this problem by simply dropping the PA pathname when listing the
CPUs in /proc/cpuinfo. There is no need to show the pathname in this
procfs file.
Fixes: cab56b51ec0e ("parisc: Fix device names in /proc/iomem")
Signed-off-by: Helge Deller <deller@xxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx> # v4.9+
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/parisc/kernel/processor.c | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)
--- a/arch/parisc/kernel/processor.c
+++ b/arch/parisc/kernel/processor.c
@@ -377,10 +377,18 @@ int
show_cpuinfo (struct seq_file *m, void *v)
{
unsigned long cpu;
+ char cpu_name[60], *p;
+
+ /* strip PA path from CPU name to not confuse lscpu */
+ strlcpy(cpu_name, per_cpu(cpu_data, 0).dev->name, sizeof(cpu_name));
+ p = strrchr(cpu_name, '[');
+ if (p)
+ *(--p) = 0;
for_each_online_cpu(cpu) {
- const struct cpuinfo_parisc *cpuinfo = &per_cpu(cpu_data, cpu);
#ifdef CONFIG_SMP
+ const struct cpuinfo_parisc *cpuinfo = &per_cpu(cpu_data, cpu);
+
if (0 == cpuinfo->hpa)
continue;
#endif
@@ -425,8 +433,7 @@ show_cpuinfo (struct seq_file *m, void *
seq_printf(m, "model\t\t: %s - %s\n",
boot_cpu_data.pdc.sys_model_name,
- cpuinfo->dev ?
- cpuinfo->dev->name : "Unknown");
+ cpu_name);
seq_printf(m, "hversion\t: 0x%08x\n"
"sversion\t: 0x%08x\n",
Patches currently in stable-queue which might be from deller@xxxxxx are
queue-4.19/parisc-fix-proc-cpuinfo-output-for-lscpu.patch
