linux-kernel - [tip: x86/cache] x86/resctrl: Slightly clean-up mbm_config

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Message-ID: <172892612576.1442.8509245466738133480.tip-bot2@tip-bot2>
Date: Mon, 14 Oct 2024 17:15:25 -0000
From: "tip-bot2 for Christophe JAILLET" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Christophe JAILLET <christophe.jaillet@...adoo.fr>,
 "Borislav Petkov (AMD)" <bp@...en8.de>,
 Reinette Chatre <reinette.chatre@...el.com>, x86@...nel.org,
 linux-kernel@...r.kernel.org
Subject: [tip: x86/cache] x86/resctrl: Slightly clean-up mbm_config_show()

The following commit has been merged into the x86/cache branch of tip:

Commit-ID:     29eaa79583671f1e1b468760d505ef837317ab15
Gitweb:        https://git.kernel.org/tip/29eaa79583671f1e1b468760d505ef837317ab15
Author:        Christophe JAILLET <christophe.jaillet@...adoo.fr>
AuthorDate:    Sat, 13 Jul 2024 13:02:32 +02:00
Committer:     Borislav Petkov (AMD) <bp@...en8.de>
CommitterDate: Mon, 14 Oct 2024 18:58:24 +02:00

x86/resctrl: Slightly clean-up mbm_config_show()

'mon_info' is already zeroed in the list_for_each_entry() loop below.  There
is no need to explicitly initialize it here. It just wastes some space and
cycles.

Remove this un-needed code.

On a x86_64, with allmodconfig:

  Before:
  ======
     text	   data	    bss	    dec	    hex	filename
    74967	   5103	   1880	  81950	  1401e	arch/x86/kernel/cpu/resctrl/rdtgroup.o

  After:
  =====
     text	   data	    bss	    dec	    hex	filename
    74903	   5103	   1880	  81886	  13fde	arch/x86/kernel/cpu/resctrl/rdtgroup.o

Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
Signed-off-by: Borislav Petkov (AMD) <bp@...en8.de>
Reviewed-by: Reinette Chatre <reinette.chatre@...el.com>
Link: https://lore.kernel.org/r/b2ebc809c8b6c6440d17b12ccf7c2d29aaafd488.1720868538.git.christophe.jaillet@wanadoo.fr
---
 arch/x86/kernel/cpu/resctrl/rdtgroup.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/cpu/resctrl/rdtgroup.c b/arch/x86/kernel/cpu/resctrl/rdtgroup.c
index d7163b7..d906a1c 100644
--- a/arch/x86/kernel/cpu/resctrl/rdtgroup.c
+++ b/arch/x86/kernel/cpu/resctrl/rdtgroup.c
@@ -1596,7 +1596,7 @@ static void mondata_config_read(struct rdt_mon_domain *d, struct mon_config_info
 
 static int mbm_config_show(struct seq_file *s, struct rdt_resource *r, u32 evtid)
 {
-	struct mon_config_info mon_info = {0};
+	struct mon_config_info mon_info;
 	struct rdt_mon_domain *dom;
 	bool sep = false;