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| author | Ingo Molnar <mingo@elte.hu> | 2009-05-15 08:26:20 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-05-15 09:47:06 +0200 |
| commit | 9029a5e3801f1cc7cdaab80169d82427acf928d8 (patch) | |
| tree | e2acb45f70744ffd5c47c31be67e482df2ef17c4 /arch/x86/math-emu/wm_sqrt.S | |
| parent | 1c80f4b598d9b075a2a0be694e28be93a6702bcc (diff) | |
| download | kernel-crypto-9029a5e3801f1cc7cdaab80169d82427acf928d8.tar.gz kernel-crypto-9029a5e3801f1cc7cdaab80169d82427acf928d8.tar.xz kernel-crypto-9029a5e3801f1cc7cdaab80169d82427acf928d8.zip | |
perf_counter: x86: Protect against infinite loops in intel_pmu_handle_irq()
intel_pmu_handle_irq() can lock up in an infinite loop if the hardware
does not allow the acking of irqs. Alas, this happened in testing so
make this robust and emit a warning if it happens in the future.
Also, clean up the IRQ handlers a bit.
[ Impact: improve perfcounter irq/nmi handling robustness ]
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/math-emu/wm_sqrt.S')
0 files changed, 0 insertions, 0 deletions