From 97b1198fece06d495270222bcf5fde4c8cb0b5b0 Mon Sep 17 00:00:00 2001 From: Vince Weaver Date: Sun, 15 Jun 2014 02:05:23 -0400 Subject: [PATCH] s390, perf: Use common PMU interrupt disabled code Transition to using the new generic PERF_PMU_CAP_NO_INTERRUPT method for failing a sampling event when no PMU interrupt is available. Signed-off-by: Vince Weaver Signed-off-by: Peter Zijlstra Cc: Heiko Carstens Cc: Hendrik Brueckner Cc: Martin Schwidefsky Cc: Paul Gortmaker Cc: Thomas Huth Cc: linux390@de.ibm.com Cc: linux-s390@vger.kernel.org Link: http://lkml.kernel.org/r/alpine.DEB.2.10.1406150204290.16738@vincent-weaver-1.umelst.maine.edu Signed-off-by: Ingo Molnar --- arch/s390/kernel/perf_cpum_cf.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/arch/s390/kernel/perf_cpum_cf.c b/arch/s390/kernel/perf_cpum_cf.c index ea75d011a6fc..d3194de7ae1e 100644 --- a/arch/s390/kernel/perf_cpum_cf.c +++ b/arch/s390/kernel/perf_cpum_cf.c @@ -411,12 +411,6 @@ static int cpumf_pmu_event_init(struct perf_event *event) case PERF_TYPE_HARDWARE: case PERF_TYPE_HW_CACHE: case PERF_TYPE_RAW: - /* The CPU measurement counter facility does not have overflow - * interrupts to do sampling. Sampling must be provided by - * external means, for example, by timers. - */ - if (is_sampling_event(event)) - return -ENOENT; err = __hw_perf_event_init(event); break; default: @@ -681,6 +675,12 @@ static int __init cpumf_pmu_init(void) goto out; } + /* The CPU measurement counter facility does not have overflow + * interrupts to do sampling. Sampling must be provided by + * external means, for example, by timers. + */ + cpumf_pmu.capabilities |= PERF_PMU_CAP_NO_INTERRUPT; + cpumf_pmu.attr_groups = cpumf_cf_event_group(); rc = perf_pmu_register(&cpumf_pmu, "cpum_cf", PERF_TYPE_RAW); if (rc) { -- GitLab