Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753212AbaBNWDL (ORCPT ); Fri, 14 Feb 2014 17:03:11 -0500 Received: from e9.ny.us.ibm.com ([32.97.182.139]:50661 "EHLO e9.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752875AbaBNWDJ (ORCPT ); Fri, 14 Feb 2014 17:03:09 -0500 From: Cody P Schafer To: Linux PPC , Cody P Schafer Cc: LKML , Peter Zijlstra , Paul Mackerras , Arnaldo Carvalho de Melo , Ingo Molnar , Benjamin Herrenschmidt , Michael Ellerman Subject: [PATCH v2 07/11] powerpc: add a shared interface to get gpci version and capabilities Date: Fri, 14 Feb 2014 14:02:11 -0800 Message-Id: <1392415338-16288-8-git-send-email-cody@linux.vnet.ibm.com> X-Mailer: git-send-email 1.8.5.4 In-Reply-To: <1392415338-16288-1-git-send-email-cody@linux.vnet.ibm.com> References: <1392415338-16288-1-git-send-email-cody@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 14021422-7182-0000-0000-000009D7686D Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Signed-off-by: Cody P Schafer --- arch/powerpc/perf/hv-common.c | 39 +++++++++++++++++++++++++++++++++++++++ arch/powerpc/perf/hv-common.h | 17 +++++++++++++++++ 2 files changed, 56 insertions(+) create mode 100644 arch/powerpc/perf/hv-common.c create mode 100644 arch/powerpc/perf/hv-common.h diff --git a/arch/powerpc/perf/hv-common.c b/arch/powerpc/perf/hv-common.c new file mode 100644 index 0000000..47e02b3 --- /dev/null +++ b/arch/powerpc/perf/hv-common.c @@ -0,0 +1,39 @@ +#include +#include + +#include "hv-gpci.h" +#include "hv-common.h" + +unsigned long hv_perf_caps_get(struct hv_perf_caps *caps) +{ + unsigned long r; + struct p { + struct hv_get_perf_counter_info_params params; + struct cv_system_performance_capabilities caps; + } __packed __aligned(sizeof(uint64_t)); + + struct p arg = { + .params = { + .counter_request = cpu_to_be32( + CIR_SYSTEM_PERFORMANCE_CAPABILITIES), + .starting_index = cpu_to_be32(-1), + .counter_info_version_in = 0, + } + }; + + r = plpar_hcall_norets(H_GET_PERF_COUNTER_INFO, + virt_to_phys(&arg), sizeof(arg)); + + if (r) + return r; + + pr_devel("capability_mask: 0x%x\n", arg.caps.capability_mask); + + caps->version = arg.params.counter_info_version_out; + caps->collect_privileged = !!arg.caps.perf_collect_privileged; + caps->ga = !!(arg.caps.capability_mask & CV_CM_GA); + caps->expanded = !!(arg.caps.capability_mask & CV_CM_EXPANDED); + caps->lab = !!(arg.caps.capability_mask & CV_CM_LAB); + + return r; +} diff --git a/arch/powerpc/perf/hv-common.h b/arch/powerpc/perf/hv-common.h new file mode 100644 index 0000000..7e615bd --- /dev/null +++ b/arch/powerpc/perf/hv-common.h @@ -0,0 +1,17 @@ +#ifndef LINUX_POWERPC_PERF_HV_COMMON_H_ +#define LINUX_POWERPC_PERF_HV_COMMON_H_ + +#include + +struct hv_perf_caps { + u16 version; + u16 collect_privileged:1, + ga:1, + expanded:1, + lab:1, + unused:12; +}; + +unsigned long hv_perf_caps_get(struct hv_perf_caps *caps); + +#endif -- 1.8.5.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/