| From: |
| Frederic Weisbecker <fweisbec@gmail.com> |
| To: |
| LKML <linux-kernel@vger.kernel.org> |
| Subject: |
| [RFC PATCH 0/7] softirq: Consolidation and stack overrun fix v2 |
| Date: |
| Wed, 25 Sep 2013 18:17:59 +0200 |
| Message-ID: |
| <1380125886-10341-1-git-send-email-fweisbec@gmail.com> |
| Cc: |
| Frederic Weisbecker <fweisbec@gmail.com>, Benjamin Herrenschmidt <benh@kernel.crashing.org>, Paul Mackerras <paulus@au1.ibm.com>, Ingo Molnar <mingo@kernel.org>, Thomas Gleixner <tglx@linutronix.de>, Peter Zijlstra <peterz@infradead.org>, "H. Peter Anvin" <hpa@zytor.com>, Linus Torvalds <torvalds@linux-foundation.org>, James Hogan <james.hogan@imgtec.com>, "James E.J. Bottomley" <jejb@parisc-linux.org>, Helge Deller <deller@gmx.de>, Martin Schwidefsky <schwidefsky@de.ibm.com>, Heiko Carstens <heiko.carstens@de.ibm.com>, "David S. Miller" <davem@davemloft.net>, Andrew Morton <akpm@linux-foundation.org>, <stable@vger.kernel.org> |
| Archive‑link: | |
Article |
Hi,
So here is a respin after the discussion we had, plus some more
goodies:
* 1st patch is a short term pure regression fixe, with stable tag etc...
* 2nd patch now also generalize the softirq_count() check
* 4th improve debugging (just hope I did not mistake the !in_interrupt()
assumption in __do_softirq()
* more comments
* introduction of a longer term solution via a new arch symbol for archs
to tell about irq_exit() stack coverage.
Thanks.
Frederic Weisbecker (7):
irq: Force hardirq exit's softirq processing on its own stack
irq: Consolidate do_softirq() arch overriden implementations
irq: Optimize call to softirq on hardirq exit
irq: Improve a bit softirq debugging
irq: Justify the various softirq stack choices
irq: Optimize softirq stack selection in irq exit
x86: Tell about irq stack coverage
arch/metag/kernel/irq.c | 52 ++++++++++++++++--------------------------
arch/parisc/kernel/irq.c | 17 ++------------
arch/powerpc/kernel/irq.c | 17 +-------------
arch/s390/kernel/irq.c | 52 +++++++++++++++++-------------------------
arch/sh/kernel/irq.c | 57 +++++++++++++++++-----------------------------
arch/sparc/kernel/irq_64.c | 31 ++++++++-----------------
arch/x86/include/asm/irq.h | 4 ++++
arch/x86/kernel/entry_64.S | 4 ++--
arch/x86/kernel/irq_32.c | 30 +++++++-----------------
arch/x86/kernel/irq_64.c | 21 -----------------
include/linux/interrupt.h | 11 +++++++++
kernel/softirq.c | 40 ++++++++++++++++++++++++--------
12 files changed, 130 insertions(+), 206 deletions(-)
--
1.8.3.1
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