/* * drv_configs.h: Interface to apply PMU specific configuration * Copyright (c) 2016-2018, Linaro Ltd. * * This program is free software; you can redistribute it and/or modify it * under the terms and conditions of the GNU General Public License, * version 2, as published by the Free Software Foundation. * * This program is distributed in the hope it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. * */ #include "drv_configs.h" #include "evlist.h" #include "evsel.h" #include "pmu.h" static int perf_evsel__apply_drv_configs(struct perf_evsel *evsel, struct perf_evsel_config_term **err_term) { bool found = false; int err = 0; struct perf_evsel_config_term *term; struct perf_pmu *pmu = NULL; while ((pmu = perf_pmu__scan(pmu)) != NULL) if (pmu->type == evsel->attr.type) { found = true; break; } list_for_each_entry(term, &evsel->config_terms, list) { if (term->type != PERF_EVSEL__CONFIG_TERM_DRV_CFG) continue; /* * We have a configuration term, report an error if we * can't find the PMU or if the PMU driver doesn't support * cmd line driver configuration. */ if (!found || !pmu->set_drv_config) { err = -EINVAL; *err_term = term; break; } err = pmu->set_drv_config(term); if (err) { *err_term = term; break; } } return err; } int perf_evlist__apply_drv_configs(struct perf_evlist *evlist, struct perf_evsel **err_evsel, struct perf_evsel_config_term **err_term) { struct perf_evsel *evsel; int err = 0; evlist__for_each_entry(evlist, evsel) { err = perf_evsel__apply_drv_configs(evsel, err_term); if (err) { *err_evsel = evsel; break; } } return err; } ivate-remove'>logtreecommitdiff
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authorThomas Gleixner <tglx@linutronix.de>2017-01-10 14:01:05 +0100
committerThomas Gleixner <tglx@linutronix.de>2017-01-16 13:20:05 +0100
commit4205e4786d0b9fc3b4fec7b1910cf645a0468307 (patch)
tree685ccb486409197b936c785eb9d173c3edff45a1 /include/rdma/ib_mad.h
parent7e164ce4e8ecd7e9a58a83750bd3ee03125df154 (diff)
cpu/hotplug: Provide dynamic range for prepare stage
Mathieu reported that the LTTNG modules are broken as of 4.10-rc1 due to the removal of the cpu hotplug notifiers. Usually I don't care much about out of tree modules, but LTTNG is widely used in distros. There are two ways to solve that: 1) Reserve a hotplug state for LTTNG 2) Add a dynamic range for the prepare states. While #1 is the simplest solution, #2 is the proper one as we can convert in tree users, which do not care about ordering, to the dynamic range as well. Add a dynamic range which allows LTTNG to request states in the prepare stage. Reported-and-tested-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sebastian Sewior <bigeasy@linutronix.de> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1701101353010.3401@nanos Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/rdma/ib_mad.h')