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authorOlof Johansson <olof@lixom.net>2012-03-13 17:38:09 -0700
committerOlof Johansson <olof@lixom.net>2012-03-13 17:38:09 -0700
commitae0b82504e515fdb9bc23c0b770d2b30efd49dc9 (patch)
tree665d1f26b32f9e68346a9529388fbadec519e865 /arch/arm/kernel/perf_event_v7.c
parentf7c8faedf98aa5ec372e0191078ac7fe1e7fb067 (diff)
parenta6e24019468009a21b674e392d74283a90f415dd (diff)
Merge branch 'soc' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/renesas into next/soc
* 'soc' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/renesas: (234 commits) ARM: shmobile: remove additional __io() macro use ARM: mach-shmobile: default to no earlytimer ARM: mach-shmobile: r8a7779 and Marzen timer rework ARM: mach-shmobile: r8a7740 and Bonito timer rework ARM: mach-shmobile: sh73a0, AG5EVM and Kota2 timer rework ARM: mach-shmobile: sh7372, AP4EVB and Mackerel timer rework ARM: mach-shmobile: sh7377 and G4EVM timer rework ARM: mach-shmobile: sh7367 and G3EVM timer rework ARM: mach-shmobile: add shmobile_earlytimer_init() ARM: mach-shmobile: Move sh7372 AP4EVB external clk setup ARM: mach-shmobile: Move sh7372 Mackerel external clk setup ARM: mach-shmobile: rename clk_init() to shmobile_clk_init() ARM: mach-shmobile: r8a7779 L2 cache support ARM: mach-shmobile: r8a7779 map_io and init_early update ARM: mach-shmobile: r8a7740 map_io and init_early update ARM: mach-shmobile: sh73a0 map_io and init_early update ARM: mach-shmobile: sh7372 map_io and init_early update ARM: mach-shmobile: sh7377 map_io and init_early update ARM: mach-shmobile: sh7367 map_io and init_early update sh: remove clk_ops ... (includes an update to v3.3-rc7) Conflicts: arch/arm/mach-omap2/id.c
Diffstat (limited to 'arch/arm/kernel/perf_event_v7.c')
-rw-r--r--arch/arm/kernel/perf_event_v7.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/arch/arm/kernel/perf_event_v7.c b/arch/arm/kernel/perf_event_v7.c
index 6933244c68f..4d7095af2ab 100644
--- a/arch/arm/kernel/perf_event_v7.c
+++ b/arch/arm/kernel/perf_event_v7.c
@@ -809,6 +809,11 @@ static inline int armv7_pmnc_disable_intens(int idx)
counter = ARMV7_IDX_TO_COUNTER(idx);
asm volatile("mcr p15, 0, %0, c9, c14, 2" : : "r" (BIT(counter)));
+ isb();
+ /* Clear the overflow flag in case an interrupt is pending. */
+ asm volatile("mcr p15, 0, %0, c9, c12, 3" : : "r" (BIT(counter)));
+ isb();
+
return idx;
}
@@ -955,6 +960,10 @@ static irqreturn_t armv7pmu_handle_irq(int irq_num, void *dev)
struct perf_event *event = cpuc->events[idx];
struct hw_perf_event *hwc;
+ /* Ignore if we don't have an event. */
+ if (!event)
+ continue;
+
/*
* We have a single interrupt for all counters. Check that
* each counter has overflowed before we process it.
@@ -963,7 +972,7 @@ static irqreturn_t armv7pmu_handle_irq(int irq_num, void *dev)
continue;
hwc = &event->hw;
- armpmu_event_update(event, hwc, idx, 1);
+ armpmu_event_update(event, hwc, idx);
data.period = event->hw.last_period;
if (!armpmu_event_set_period(event, hwc, idx))
continue;