linux-kernel - [PATCH v2 04/33] drivers/base/cacheinfo.c: Export some cacheinfo functions for others to use

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Date:   Thu,  8 Sep 2016 02:56:58 -0700
From:   "Fenghua Yu" <fenghua.yu@...el.com>
To:     "Thomas Gleixner" <tglx@...utronix.de>,
        "H. Peter Anvin" <h.peter.anvin@...el.com>,
        "Ingo Molnar" <mingo@...e.hu>, "Tony Luck" <tony.luck@...el.com>,
        "Peter Zijlstra" <peterz@...radead.org>,
        "Tejun Heo" <tj@...nel.org>, "Borislav Petkov" <bp@...e.de>,
        "Stephane Eranian" <eranian@...gle.com>,
        "Marcelo Tosatti" <mtosatti@...hat.com>,
        "David Carrillo-Cisneros" <davidcc@...gle.com>,
        "Shaohua Li" <shli@...com>,
        "Ravi V Shankar" <ravi.v.shankar@...el.com>,
        "Vikas Shivappa" <vikas.shivappa@...ux.intel.com>,
        "Sai Prakhya" <sai.praneeth.prakhya@...el.com>
Cc:     "linux-kernel" <linux-kernel@...r.kernel.org>,
        "x86" <x86@...nel.org>, Fenghua Yu <fenghua.yu@...el.com>
Subject: [PATCH v2 04/33] drivers/base/cacheinfo.c: Export some cacheinfo functions for others to use

From: Fenghua Yu <fenghua.yu@...el.com>

We use ci_cpu_cacheinfo in CAT. Export this function for CAT to reuse.

Signed-off-by: Fenghua Yu <fenghua.yu@...el.com>
Reviewed-by: Tony Luck <tony.luck@...el.com>
---
 drivers/base/cacheinfo.c  | 2 +-
 include/linux/cacheinfo.h | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/base/cacheinfo.c b/drivers/base/cacheinfo.c
index 2a21c15..f6e269a 100644
--- a/drivers/base/cacheinfo.c
+++ b/drivers/base/cacheinfo.c
@@ -29,7 +29,7 @@
 #include <linux/sysfs.h>
 
 /* pointer to per cpu cacheinfo */
-static DEFINE_PER_CPU(struct cpu_cacheinfo, ci_cpu_cacheinfo);
+DEFINE_PER_CPU(struct cpu_cacheinfo, ci_cpu_cacheinfo);
 #define ci_cacheinfo(cpu)	(&per_cpu(ci_cpu_cacheinfo, cpu))
 #define cache_leaves(cpu)	(ci_cacheinfo(cpu)->num_leaves)
 #define per_cpu_cacheinfo(cpu)	(ci_cacheinfo(cpu)->info_list)
diff --git a/include/linux/cacheinfo.h b/include/linux/cacheinfo.h
index cf6984d..fa5e829 100644
--- a/include/linux/cacheinfo.h
+++ b/include/linux/cacheinfo.h
@@ -94,6 +94,8 @@ int func(unsigned int cpu)					\
 	return ret;						\
 }
 
+#define ci_cacheinfo(cpu)       (&per_cpu(ci_cpu_cacheinfo, cpu))
+
 struct cpu_cacheinfo *get_cpu_cacheinfo(unsigned int cpu);
 int init_cache_level(unsigned int cpu);
 int populate_cache_leaves(unsigned int cpu);
-- 
2.5.0