linux-kernel - [PATCH 06/13] arm/irq: use seq_put_decimal_ull

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Message-Id: <20241108161603.9725-1-00107082@163.com>
Date: Sat,  9 Nov 2024 00:16:03 +0800
From: David Wang <00107082@....com>
To: linux-arm-kernel@...ts.infradead.org
Cc: linux-kernel@...r.kernel.org,
	tglx@...utronix.de,
	David Wang <00107082@....com>
Subject: [PATCH 06/13] arm/irq: use seq_put_decimal_ull_width() for decimal values

Performance improvement for reading /proc/interrupts on arch arm

Signed-off-by: David Wang <00107082@....com>
---
 arch/arm/kernel/smp.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index 3431c0553f45..1b0680477ae1 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -551,10 +551,10 @@ void show_ipi_list(struct seq_file *p, int prec)
 		if (!ipi_desc[i])
 			continue;
 
-		seq_printf(p, "%*s%u: ", prec - 1, "IPI", i);
+		seq_printf(p, "%*s%u:", prec - 1, "IPI", i);
 
 		for_each_online_cpu(cpu)
-			seq_printf(p, "%10u ", irq_desc_kstat_cpu(ipi_desc[i], cpu));
+			seq_put_decimal_ull_width(p, " ", irq_desc_kstat_cpu(ipi_desc[i], cpu), 10);
 
 		seq_printf(p, " %s\n", ipi_types[i]);
 	}
-- 
2.39.2