From: Dave Olson <olson@cumulusnetworks•com>
To: Benjamin Herrenschmidt <benh@kernel•crashing.org>,
Paul Mackerras <paulus@samba•org>,
Michael Ellerman <mpe@ellerman•id.au>
Cc: linuxppc-dev@lists•ozlabs.org
Subject: [PATCH 1/1] powerpc: fix missing L2 cache size in /sys/devices/system/cpu
Date: Mon, 9 Feb 2015 14:14:21 -0800 [thread overview]
Message-ID: <20150209221421.GA22286@cumulusnetworks.com> (raw)
From: Dave Olson <olson@cumulusnetworks•com>
Fix missing L2 cache size in /sys/devices/system/cpu/cpu0/cache/index2/size
This bug appears to be introduced in 2.6.29 by 93197a36a9c16a85fb24cf5a8639f7bf9af838a3.
The missing entry caused lscpu to error out on e500v2 devices, and probably others
error: cannot open /sys/devices/system/cpu/cpu0/cache/index2/size: No such file or directory
The DTS files we see use cache-size for the unified L2 cache size, not d-cache-size
Signed-off-by: Dave Olson <olson@cumulusnetworks•com>
---
diff --git a/arch/powerpc/kernel/cacheinfo.c b/arch/powerpc/kernel/cacheinfo.c
index 40198d5..9ca1e9a 100644
--- a/arch/powerpc/kernel/cacheinfo.c
+++ b/arch/powerpc/kernel/cacheinfo.c
@@ -72,7 +72,7 @@ static const struct cache_type_info cache_type_info[] = {
* must be equal on unified caches, so just use
* d-cache properties. */
.name = "Unified",
- .size_prop = "d-cache-size",
+ .size_prop = "cache-size",
.line_size_props = { "d-cache-line-size",
"d-cache-block-size", },
.nr_sets_prop = "d-cache-sets",
next reply other threads:[~2015-02-09 22:14 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-09 22:14 Dave Olson [this message]
2015-02-09 23:33 ` [PATCH 1/1] powerpc: fix missing L2 cache size in /sys/devices/system/cpu Michael Ellerman
2015-02-09 23:43 ` Dave Olson
2015-02-10 0:12 ` Benjamin Herrenschmidt
2015-02-10 3:30 ` Michael Ellerman
2015-02-10 8:00 ` Dave Olson
2015-02-10 8:14 ` Benjamin Herrenschmidt
2015-02-10 16:55 ` Dave Olson
2015-02-10 19:45 ` Benjamin Herrenschmidt
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