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ARM: 6330/1: perf: reword comments relating to perf_event_do_pending

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This is purely a cosmetic change to the ARM perf backend because the current
comments about the relationship between NMIs, interrupt context and
perf_event_do_pending are misleading.

This patch updates the comments so that they reflect what the code
actually does (which is in line with other architectures).

Acked-by: Jamie Iles <jamie.iles@picochip.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Will Deacon 2010-08-16 15:15:14 +01:00 committed by Russell King
parent 2bfc96a127
commit 25d3584797
2 changed files with 5 additions and 5 deletions
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2
arch/arm/include/asm/perf_event.h
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@ -17,7 +17,7 @@
* counter interrupts are regular interrupts and not an NMI. This
* means that when we receive the interrupt we can call
* perf_event_do_pending() that handles all of the work with
* interrupts enabled.
* interrupts disabled.
*/
static inline void
set_perf_event_pending(void)

8
arch/arm/kernel/perf_event.c
View File

@ -1041,8 +1041,8 @@ armv6pmu_handle_irq(int irq_num,
/*
* Handle the pending perf events.
*
* Note: this call *must* be run with interrupts enabled. For
* platforms that can have the PMU interrupts raised as a PMI, this
* Note: this call *must* be run with interrupts disabled. For
* platforms that can have the PMU interrupts raised as an NMI, this
* will not work.
*/
perf_event_do_pending();
@ -2017,8 +2017,8 @@ static irqreturn_t armv7pmu_handle_irq(int irq_num, void *dev)
/*
* Handle the pending perf events.
*
* Note: this call *must* be run with interrupts enabled. For
* platforms that can have the PMU interrupts raised as a PMI, this
* Note: this call *must* be run with interrupts disabled. For
* platforms that can have the PMU interrupts raised as an NMI, this
* will not work.
*/
perf_event_do_pending();