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| author | Peter Zijlstra <peterz@infradead.org> | 2014-02-03 18:11:08 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-02-09 13:17:21 +0100 |
| commit | 6a02ad66b2c44155d529f430d4fa5c6c66321077 (patch) | |
| tree | f6a4d0ac8618aab3ea0154429c2ffc569474aa4a /include/linux/irq_work.h | |
| parent | 3c3d7cb1db4af176dab843f22ea092a4ef1eb989 (diff) | |
| download | lwn-6a02ad66b2c44155d529f430d4fa5c6c66321077.tar.gz lwn-6a02ad66b2c44155d529f430d4fa5c6c66321077.zip | |
perf/x86: Push the duration-logging printk() to IRQ context
Calling printk() from NMI context is bad (TM), so move it to IRQ
context.
This also avoids the problem where the printk() time is measured by
the generic NMI duration goo and triggers a second warning.
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Link: http://lkml.kernel.org/n/tip-75dv35xf6dhhmeb7nq6fua31@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/linux/irq_work.h')
| -rw-r--r-- | include/linux/irq_work.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/irq_work.h b/include/linux/irq_work.h index 66017028dcb3..add13c8624b7 100644 --- a/include/linux/irq_work.h +++ b/include/linux/irq_work.h @@ -30,6 +30,8 @@ void init_irq_work(struct irq_work *work, void (*func)(struct irq_work *)) work->func = func; } +#define DEFINE_IRQ_WORK(name, _f) struct irq_work name = { .func = (_f), } + void irq_work_queue(struct irq_work *work); void irq_work_run(void); void irq_work_sync(struct irq_work *work); |