Commit-ID: cb63ba0f670df1f0ddf21c6cc4bbe74db398742c Gitweb: https://git.kernel.org/tip/cb63ba0f670df1f0ddf21c6cc4bbe74db398742c Author: Kan Liang <kan.li...@linux.intel.com> AuthorDate: Mon, 13 May 2019 13:58:59 -0400 Committer: Thomas Gleixner <t...@linutronix.de> CommitDate: Thu, 23 May 2019 10:08:35 +0200
perf/x86/intel/cstate: Support multi-die/package Some cstate counters become die-scoped on Xeon Cascade Lake-AP. Perf cstate driver needs to support die-scope cstate counters. Use topology_die_cpumask() to replace topology_core_cpumask(). For previous platforms which doesn't have multi-die, topology_die_cpumask() is identical as topology_core_cpumask(). There is no functional change for previous platforms. Name the die-scope PMU "cstate_die". Signed-off-by: Kan Liang <kan.li...@linux.intel.com> Signed-off-by: Len Brown <len.br...@intel.com> Signed-off-by: Thomas Gleixner <t...@linutronix.de> Reviewed-by: Ingo Molnar <mi...@kernel.org> Acked-by: Peter Zijlstra (Intel) <pet...@infradead.org> Link: https://lkml.kernel.org/r/acb5e483287280eeb2b6daabe04a600b85e72a78.1557769318.git.len.br...@intel.com --- arch/x86/events/intel/cstate.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/arch/x86/events/intel/cstate.c b/arch/x86/events/intel/cstate.c index 6072f92cb8ea..267d7f8e12ab 100644 --- a/arch/x86/events/intel/cstate.c +++ b/arch/x86/events/intel/cstate.c @@ -302,7 +302,7 @@ static int cstate_pmu_event_init(struct perf_event *event) return -EINVAL; event->hw.event_base = pkg_msr[cfg].msr; cpu = cpumask_any_and(&cstate_pkg_cpu_mask, - topology_core_cpumask(event->cpu)); + topology_die_cpumask(event->cpu)); } else { return -ENOENT; } @@ -385,7 +385,7 @@ static int cstate_cpu_exit(unsigned int cpu) if (has_cstate_pkg && cpumask_test_and_clear_cpu(cpu, &cstate_pkg_cpu_mask)) { - target = cpumask_any_but(topology_core_cpumask(cpu), cpu); + target = cpumask_any_but(topology_die_cpumask(cpu), cpu); /* Migrate events if there is a valid target */ if (target < nr_cpu_ids) { cpumask_set_cpu(target, &cstate_pkg_cpu_mask); @@ -414,7 +414,7 @@ static int cstate_cpu_init(unsigned int cpu) * in the package cpu mask as the designated reader. */ target = cpumask_any_and(&cstate_pkg_cpu_mask, - topology_core_cpumask(cpu)); + topology_die_cpumask(cpu)); if (has_cstate_pkg && target >= nr_cpu_ids) cpumask_set_cpu(cpu, &cstate_pkg_cpu_mask); @@ -663,7 +663,13 @@ static int __init cstate_init(void) } if (has_cstate_pkg) { - err = perf_pmu_register(&cstate_pkg_pmu, cstate_pkg_pmu.name, -1); + if (topology_max_die_per_package() > 1) { + err = perf_pmu_register(&cstate_pkg_pmu, + "cstate_die", -1); + } else { + err = perf_pmu_register(&cstate_pkg_pmu, + cstate_pkg_pmu.name, -1); + } if (err) { has_cstate_pkg = false; pr_info("Failed to register cstate pkg pmu\n");
