| From: |
| Thomas Gleixner <tglx@linutronix.de> |
| To: |
| Linus Torvalds <torvalds@osdl.org> |
| Subject: |
| [patch 0/2] Run interrupt handlers always with interrupts disabled |
| Date: |
| Fri, 26 Mar 2010 00:06:44 -0000 |
| Message-ID: |
| <20100326000325.917127328@linutronix.de> |
| Cc: |
| LKML <linux-kernel@vger.kernel.org>, linux-arch@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
Ingo Molnar <mingo@elte.hu>,
Peter Zijlstra <peterz@infradead.org>,
Alan Cox <alan@lxorguk.ukuu.org.uk>,
Andi Kleen <andi@firstfloor.org>,
David Miller <davem@davemloft.net>,
Greg Kroah-Hartman <gregkh@suse.de>,
Arnaldo Carvalho de Melo <acme@redhat.com> |
| Archive‑link: | |
Article |
The following patch series removes the IRQF_DISABLED functionality
from the core interrupt code and runs all interrupt handlers with
interrupts disabled.
IRQF_DISABLED is kept as a define and scheduled for feature removal.
I booted and stressed that patches w/o any obvious fallout on more
than 20 different systems in my arsenal of test machines which
includes various embedded non x86 systems.
To debug eventual latency issues we (admittedly I talked acme into
looking at that) want to extend perf with a top like tool to monitor
the maximum runtime of interrupt handlers with the already existing
tracepoints.
Thanks,
tglx
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