[PATCH] perfmon: use ARRAY_SIZE() macro

["Gustavo A. R. Silva" <gustavo@embeddedor.com>]

Use ARRAY_SIZE instead of dividing sizeof array with sizeof an element
or, as in this particular case, sizeof the structure name.

This issue was detected with the help of Coccinelle.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
---
 arch/ia64/kernel/perfmon.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c
index 46bff1661836..b39df5078e19 100644
--- a/arch/ia64/kernel/perfmon.c
+++ b/arch/ia64/kernel/perfmon.c
@@ -4644,7 +4644,7 @@ static pfm_cmd_desc_t pfm_cmd_tab[]={
 /* 32 */PFM_CMD(pfm_write_ibrs, PFM_CMD_PCLRWS, PFM_CMD_ARG_MANY, pfarg_dbreg_t, NULL),
 /* 33 */PFM_CMD(pfm_write_dbrs, PFM_CMD_PCLRWS, PFM_CMD_ARG_MANY, pfarg_dbreg_t, NULL)
 };
-#define PFM_CMD_COUNT	(sizeof(pfm_cmd_tab)/sizeof(pfm_cmd_desc_t))
+#define PFM_CMD_COUNT	ARRAY_SIZE(pfm_cmd_tab)
 
 static int
 pfm_check_task_state(pfm_context_t *ctx, int cmd, unsigned long flags)
-- 
2.20.1