From mboxrd@z Thu Jan 1 00:00:00 1970 From: Song Liu Subject: [PATCH 2/6] perf: copy new perf_event.h to tools/include/uapi Date: Wed, 15 Nov 2017 09:23:35 -0800 Message-ID: <20171115172339.1791161-5-songliubraving@fb.com> References: <20171115172339.1791161-1-songliubraving@fb.com> Mime-Version: 1.0 Content-Type: text/plain Cc: , Song Liu To: , , , , , , Return-path: Received: from mx0a-00082601.pphosted.com ([67.231.145.42]:37374 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757489AbdKORXs (ORCPT ); Wed, 15 Nov 2017 12:23:48 -0500 Received: from pps.filterd (m0044010.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id vAFHJrEN008867 for ; Wed, 15 Nov 2017 09:23:48 -0800 Received: from mail.thefacebook.com ([199.201.64.23]) by mx0a-00082601.pphosted.com with ESMTP id 2e8qbu8mau-4 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT) for ; Wed, 15 Nov 2017 09:23:48 -0800 In-Reply-To: <20171115172339.1791161-1-songliubraving@fb.com> Sender: netdev-owner@vger.kernel.org List-ID: perf_event.h is updated in previous patch, this patch applies same changes to the tools/ version. This is part is put in a separate patch in case the two files are back ported separately. Signed-off-by: Song Liu Reviewed-by: Yonghong Song Reviewed-by: Josef Bacik Acked-by: Alexei Starovoitov --- tools/include/uapi/linux/perf_event.h | 35 +++++++++++++++++++++++++++++++++-- 1 file changed, 33 insertions(+), 2 deletions(-) diff --git a/tools/include/uapi/linux/perf_event.h b/tools/include/uapi/linux/perf_event.h index 362493a..cc42d59 100644 --- a/tools/include/uapi/linux/perf_event.h +++ b/tools/include/uapi/linux/perf_event.h @@ -33,6 +33,7 @@ enum perf_type_id { PERF_TYPE_HW_CACHE = 3, PERF_TYPE_RAW = 4, PERF_TYPE_BREAKPOINT = 5, + PERF_TYPE_PROBE = 6, PERF_TYPE_MAX, /* non-ABI */ }; @@ -299,6 +300,29 @@ enum perf_event_read_format { #define PERF_ATTR_SIZE_VER4 104 /* add: sample_regs_intr */ #define PERF_ATTR_SIZE_VER5 112 /* add: aux_watermark */ +#define MAX_PROBE_FUNC_NAME_LEN 64 +/* + * Describe a kprobe or uprobe for PERF_TYPE_PROBE. + * perf_event_attr.probe_desc will point to this structure. is_uprobe + * and is_return are used to differentiate different types of probe + * (k/u, probe/retprobe). + * + * The two unions should be used as follows: + * For uprobe: use path and offset; + * For kprobe: if func is empty, use addr + * if func is not emtpy, use func and offset + */ +struct probe_desc { + union { + __aligned_u64 func; + __aligned_u64 path; + }; + union { + __aligned_u64 addr; + __u64 offset; + }; +}; + /* * Hardware event_id to monitor via a performance monitoring event: * @@ -320,7 +344,10 @@ struct perf_event_attr { /* * Type specific configuration information. */ - __u64 config; + union { + __u64 config; + __u64 probe_desc; /* ptr to struct probe_desc */ + }; union { __u64 sample_period; @@ -370,7 +397,11 @@ struct perf_event_attr { context_switch : 1, /* context switch data */ write_backward : 1, /* Write ring buffer from end to beginning */ namespaces : 1, /* include namespaces data */ - __reserved_1 : 35; + + /* For PERF_TYPE_PROBE */ + is_uprobe : 1, /* 0: kprobe, 1: uprobe */ + is_return : 1, /* 0: probe, 1: retprobe */ + __reserved_1 : 33; union { __u32 wakeup_events; /* wakeup every n events */ -- 2.9.5