diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2014-07-16 21:57:38 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2014-07-16 21:57:38 +0200 |
| commit | afdb094380889222583df9ef803587f6b8a82c8d (patch) | |
| tree | 4a03c516568e5c8b994a5739f3d34f4552c78898 /arch/arm/kernel/perf_event_cpu.c | |
| parent | be11e6d86081aa6328eaa4fe6dd14ccf39a023c8 (diff) | |
| parent | 1795cd9b3a91d4b5473c97f491d63892442212ab (diff) | |
Merge tag 'v3.16-rc5' into timers/core
Reason: Bring in upstream modifications, so the pending changes which
depend on them can be queued.
Diffstat (limited to 'arch/arm/kernel/perf_event_cpu.c')
| -rw-r--r-- | arch/arm/kernel/perf_event_cpu.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/arch/arm/kernel/perf_event_cpu.c b/arch/arm/kernel/perf_event_cpu.c index a71ae152362..af9e35e8836 100644 --- a/arch/arm/kernel/perf_event_cpu.c +++ b/arch/arm/kernel/perf_event_cpu.c @@ -126,8 +126,8 @@ static int cpu_pmu_request_irq(struct arm_pmu *cpu_pmu, irq_handler_t handler) irqs = min(pmu_device->num_resources, num_possible_cpus()); if (irqs < 1) { - pr_err("no irqs for PMUs defined\n"); - return -ENODEV; + printk_once("perf/ARM: No irqs for PMU defined, sampling events not supported\n"); + return 0; } irq = platform_get_irq(pmu_device, 0); @@ -191,6 +191,10 @@ static void cpu_pmu_init(struct arm_pmu *cpu_pmu) /* Ensure the PMU has sane values out of reset. */ if (cpu_pmu->reset) on_each_cpu(cpu_pmu->reset, cpu_pmu, 1); + + /* If no interrupts available, set the corresponding capability flag */ + if (!platform_get_irq(cpu_pmu->plat_device, 0)) + cpu_pmu->pmu.capabilities |= PERF_PMU_CAP_NO_INTERRUPT; } /* |