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From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
To: Jesse Brandeburg <jesse.brandeburg@intel.com>,
	Tony Nguyen <anthony.l.nguyen@intel.com>,
	"David S. Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>
Cc: linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org,
	Christophe JAILLET <christophe.jaillet@wanadoo.fr>,
	intel-wired-lan@lists.osuosl.org, netdev@vger.kernel.org
Subject: [PATCH] ice: switch: Simplify memory allocation
Date: Sun,  4 Sep 2022 16:18:02 +0200	[thread overview]
Message-ID: <55ff1825aee6e655c41cb6770ca44f0fbdbfec00.1662301068.git.christophe.jaillet@wanadoo.fr> (raw)

'rbuf' is locale to the ice_get_initial_sw_cfg() function.
There is no point in using devm_kzalloc()/devm_kfree().

use kzalloc()/kfree() instead.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
As a side effect, it also require less memory. devm_kzalloc() has a small
memory overhead, and requesting ICE_SW_CFG_MAX_BUF_LEN (i.e. 2048) bytes,
4096 are really allocated.
---
 drivers/net/ethernet/intel/ice/ice_switch.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_switch.c b/drivers/net/ethernet/intel/ice/ice_switch.c
index 697feb89188c..eb6e19deb70d 100644
--- a/drivers/net/ethernet/intel/ice/ice_switch.c
+++ b/drivers/net/ethernet/intel/ice/ice_switch.c
@@ -2274,9 +2274,7 @@ int ice_get_initial_sw_cfg(struct ice_hw *hw)
 	int status;
 	u16 i;
 
-	rbuf = devm_kzalloc(ice_hw_to_dev(hw), ICE_SW_CFG_MAX_BUF_LEN,
-			    GFP_KERNEL);
-
+	rbuf = kzalloc(ICE_SW_CFG_MAX_BUF_LEN, GFP_KERNEL);
 	if (!rbuf)
 		return -ENOMEM;
 
@@ -2324,7 +2322,7 @@ int ice_get_initial_sw_cfg(struct ice_hw *hw)
 		}
 	} while (req_desc && !status);
 
-	devm_kfree(ice_hw_to_dev(hw), rbuf);
+	kfree(rbuf);
 	return status;
 }
 
-- 
2.34.1


             reply	other threads:[~2022-09-04 14:18 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-09-04 14:18 Christophe JAILLET [this message]
2022-09-06 10:45 ` [Intel-wired-lan] [PATCH] ice: switch: Simplify memory allocation Michal Swiatkowski

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