linux-kernel - [PATCH 3/3] genirq: Cleanup Kconfig

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Message-ID: <20210927081402.191717-4-wangkefeng.wang@huawei.com>
Date:   Mon, 27 Sep 2021 16:14:02 +0800
From:   Kefeng Wang <wangkefeng.wang@...wei.com>
To:     Thomas Gleixner <tglx@...utronix.de>, Guo Ren <guoren@...nel.org>,
        Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        Rich Felker <dalias@...c.org>, <linux-sh@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-csky@...r.kernel.org>
CC:     Kefeng Wang <wangkefeng.wang@...wei.com>
Subject: [PATCH 3/3] genirq: Cleanup Kconfig

As the last user of MAY_HAVE_SPARSE_IRQ is gone, kill it, and clean
up the SPARSE_IRQ, covert the help text into comment.

Also move GENERIC_IRQ_MULTI_HANDLER into menu, and change all spaces
to tabs to fix alignment issue.

Cc: Thomas Gleixner <tglx@...utronix.de>
Signed-off-by: Kefeng Wang <wangkefeng.wang@...wei.com>
---
 kernel/irq/Kconfig | 50 +++++++++++++++++++---------------------------
 1 file changed, 20 insertions(+), 30 deletions(-)

diff --git a/kernel/irq/Kconfig b/kernel/irq/Kconfig
index fbc54c2a7f23..aa7d0e3edea6 100644
--- a/kernel/irq/Kconfig
+++ b/kernel/irq/Kconfig
@@ -2,13 +2,9 @@
 menu "IRQ subsystem"
 # Options selectable by the architecture code
 
-# Make sparse irq Kconfig switch below available
-config MAY_HAVE_SPARSE_IRQ
-       bool
-
 # Legacy support, required for itanic
 config GENERIC_IRQ_LEGACY
-       bool
+	bool
 
 # Enable the generic irq autoprobe mechanism
 config GENERIC_IRQ_PROBE
@@ -16,15 +12,15 @@ config GENERIC_IRQ_PROBE
 
 # Use the generic /proc/interrupts implementation
 config GENERIC_IRQ_SHOW
-       bool
+	bool
 
 # Print level/edge extra information
 config GENERIC_IRQ_SHOW_LEVEL
-       bool
+	bool
 
 # Supports effective affinity mask
 config GENERIC_IRQ_EFFECTIVE_AFF_MASK
-       bool
+	bool
 
 # Support for delayed migration from interrupt context
 config GENERIC_PENDING_IRQ
@@ -36,7 +32,7 @@ config GENERIC_IRQ_MIGRATION
 
 # Alpha specific irq affinity mechanism
 config AUTO_IRQ_AFFINITY
-       bool
+	bool
 
 # Interrupt injection mechanism
 config GENERIC_IRQ_INJECTION
@@ -44,16 +40,16 @@ config GENERIC_IRQ_INJECTION
 
 # Tasklet based software resend for pending interrupts on enable_irq()
 config HARDIRQS_SW_RESEND
-       bool
+	bool
 
 # Edge style eoi based handler (cell)
 config IRQ_EDGE_EOI_HANDLER
-       bool
+	bool
 
 # Generic configurable interrupt chip implementation
 config GENERIC_IRQ_CHIP
-       bool
-       select IRQ_DOMAIN
+	bool
+	select IRQ_DOMAIN
 
 # Generic irq_domain hw <--> linux irq number translation
 config IRQ_DOMAIN
@@ -103,6 +99,10 @@ config HANDLE_DOMAIN_IRQ
 config IRQ_TIMINGS
 	bool
 
+# Allow to specify the low level IRQ handler at run time.
+config GENERIC_IRQ_MULTI_HANDLER
+	bool
+
 config GENERIC_IRQ_MATRIX_ALLOCATOR
 	bool
 
@@ -111,20 +111,15 @@ config GENERIC_IRQ_RESERVATION_MODE
 
 # Support forced irq threading
 config IRQ_FORCED_THREADING
-       bool
+	bool
 
+# Sparse irq numbering is useful for distro kernels that want
+# to define a high CONFIG_NR_CPUS value but still want to have
+# low kernel memory footprint on smaller machines.
+# Sparse irqs can also be beneficial on NUMA boxes, as they spread
+# out the interrupt descriptors in a more NUMA-friendly way.
 config SPARSE_IRQ
-	bool "Support sparse irq numbering" if MAY_HAVE_SPARSE_IRQ
-	help
-
-	  Sparse irq numbering is useful for distro kernels that want
-	  to define a high CONFIG_NR_CPUS value but still want to have
-	  low kernel memory footprint on smaller machines.
-
-	  ( Sparse irqs can also be beneficial on NUMA boxes, as they spread
-	    out the interrupt descriptors in a more NUMA-friendly way. )
-
-	  If you don't know what to do here, say N.
+	bool
 
 config GENERIC_IRQ_DEBUGFS
 	bool "Expose irq internals in debugfs"
@@ -139,8 +134,3 @@ config GENERIC_IRQ_DEBUGFS
 	  If you don't know what to do here, say N.
 
 endmenu
-
-config GENERIC_IRQ_MULTI_HANDLER
-	bool
-	help
-	  Allow to specify the low level IRQ handler at run time.
-- 
2.26.2