linux-kernel - [PATCH] asm-generic: Raise default NR

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <1290613156-861-1-git-send-email-broonie@opensource.wolfsonmicro.com>
Date:	Wed, 24 Nov 2010 15:39:16 +0000
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Arnd Bergmann <arnd@...db.de>, Thomas Gleixner <tglx@...utronix.de>
Cc:	linux-kernel@...r.kernel.org,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Subject: [PATCH] asm-generic: Raise default NR_IRQS when using sparse IRQs

Rather than have each platform using sparse IRQs pick a suitably large
NR_IRQS for use with sparse IRQs make the default exceptionally high
when they are enabled.

Signed-off-by: Mark Brown <broonie@...nsource.wolfsonmicro.com>
---
 include/asm-generic/irq.h |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/include/asm-generic/irq.h b/include/asm-generic/irq.h
index b90ec0b..a76bea2 100644
--- a/include/asm-generic/irq.h
+++ b/include/asm-generic/irq.h
@@ -4,11 +4,15 @@
 /*
  * NR_IRQS is the upper bound of how many interrupts can be handled
  * in the platform. It is used to size the static irq_map array,
- * so don't make it too big.
+ * so don't make it too big unless we're using sparse IRQs.
  */
 #ifndef NR_IRQS
+#ifdef CONFIG_SPARSE_IRQ
+#define NR_IRQS 0x7fffffff
+#else
 #define NR_IRQS 64
 #endif
+#endif
 
 static inline int irq_canonicalize(int irq)
 {
-- 
1.7.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/