From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754500AbbCaB5D (ORCPT ); Mon, 30 Mar 2015 21:57:03 -0400 Received: from e32.co.us.ibm.com ([32.97.110.150]:59421 "EHLO e32.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753906AbbCaByv (ORCPT ); Mon, 30 Mar 2015 21:54:51 -0400 From: Sukadev Bhattiprolu To: Michael Ellerman , Paul Mackerras , peterz@infradead.org Cc: dev@codyps.com, , linuxppc-dev@lists.ozlabs.org Subject: [PATCH v2 00/10] powerpc/hv-24x7: Reorganize single_24x7_request() Date: Mon, 30 Mar 2015 18:53:37 -0700 Message-Id: <1427766828-771-1-git-send-email-sukadev@linux.vnet.ibm.com> X-Mailer: git-send-email 1.7.9.5 X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 15033101-0005-0000-0000-000009C60F4B Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org We currently issue a new hcall for to retrieve the value of each 24x7 counter that we want to read. However, the H_GET_24x7_DATA hcall can retrieve several counters in a single call, which would be useful in getting a more consistent snapshot of the system. Reorganize the code that prepares a 24x7 hcall request, submits it and processes the result to allow reading seveal counters at once. We still submit a fresh hcall for each event for now. A follow-on patch-set will build on this to submit multiple perf_events in a single hcall. Thanks to Peter Zijlstra for his input. Changelog[v2] - Split independent changes in patch 2 into patch 3. - Minor changes to pr_err() (Patch 4). - Move whitespace changes to separate patch (Patch 8). - Minor function renames (Patch 10). Sukadev Bhattiprolu (10): powerpc/hv-24x7: Modify definition of request and result buffers powerpc/hv24x7: Remove unnecessary parameter perf/hv24x7: Use pr_devel() to log message powerpc/hv-24x7: Drop event_24x7_request() powerpc/hv24x7: Move debug prints to separate function powerpc/hv-24x7: Rename hv_24x7_event_update powerpc/hv-24x7: Define add_event_to_24x7_request() perf/hv24x7: Whitespace cleanup powerpc/hv-24x7: Define update_event_count() powerpc/hv-24x7: Break up single_24x7_request arch/powerpc/perf/hv-24x7.c | 212 +++++++++++++++++++++++++++----------------- arch/powerpc/perf/hv-24x7.h | 8 +- 2 files changed, 137 insertions(+), 83 deletions(-) -- 1.8.3.1