linux-kernel - [PATCH] powerpc/perf/hv-24x7: Use kmem_cache

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Date:	Tue, 22 Jul 2014 23:40:19 +0530
From:	Himangi Saraogi <himangi774@...il.com>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Paul Mackerras <paulus@...ba.org>,
	linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Cc:	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH] powerpc/perf/hv-24x7: Use kmem_cache_free

Free memory allocated using kmem_cache_zalloc using kmem_cache_free
rather than kfree.

The Coccinelle semantic patch that makes this change is as follows:

// <smpl>
@@
expression x,E,c;
@@

 x = \(kmem_cache_alloc\|kmem_cache_zalloc\|kmem_cache_alloc_node\)(c,...)
 ... when != x = E
     when != &x
?-kfree(x)
+kmem_cache_free(c,x)
// </smpl>

Signed-off-by: Himangi Saraogi <himangi774@...il.com>
Acked-by: Julia Lawall <julia.lawall@...6.fr>
---
 arch/powerpc/perf/hv-24x7.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/perf/hv-24x7.c b/arch/powerpc/perf/hv-24x7.c
index 66d0f17..70d4f74 100644
--- a/arch/powerpc/perf/hv-24x7.c
+++ b/arch/powerpc/perf/hv-24x7.c
@@ -223,7 +223,7 @@ e_free:
 		pr_err("h_get_24x7_catalog_page(ver=%lld, page=%lld) failed:"
 		       " rc=%ld\n",
 		       catalog_version_num, page_offset, hret);
-	kfree(page);
+	kmem_cache_free(hv_page_cache, page);
 
 	pr_devel("catalog_read: offset=%lld(%lld) count=%zu(%zu) catalog_len=%zu(%zu) => %zd\n",
 			offset, page_offset, count, page_count, catalog_len,
-- 
1.9.1

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