From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753226AbbBQWBQ (ORCPT ); Tue, 17 Feb 2015 17:01:16 -0500 Received: from e39.co.us.ibm.com ([32.97.110.160]:41210 "EHLO e39.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753061AbbBQWBM (ORCPT ); Tue, 17 Feb 2015 17:01:12 -0500 From: Sukadev Bhattiprolu To: Michael Ellerman , Paul Mackerras Cc: peterz@infradead.org, , linuxppc-dev@lists.ozlabs.org Subject: [PATCH 0/9] powerpc/hv-24x7: Reorganize single_24x7_request() Date: Tue, 17 Feb 2015 14:00:25 -0800 Message-Id: <1424210434-28070-1-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: 15021722-0033-0000-0000-000003B0FF56 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. Sukadev Bhattiprolu (9): powerpc/perf: hv-24x7: Modify definition of request and result buffers powerpc: perf/hv24x7: Remove unnecessary parameter powerpc: perf/hv-24x7: Drop event_24x7_request() powerpc: perf/hv24x7: Move debug prints to separate function perf: powerpc/hv-24x7: Rename hv_24x7_event_update powerpc: perf/hv-24x7: Define add_event_to_24x7_request() powerpc: perf/hv-24x7: Define update_event_count() powerpc: perf/hv-24x7: Break up single_24x7_request powerpc: perf/hv-24x7: Add missing put_cpu_var() arch/powerpc/perf/hv-24x7.c | 198 ++++++++++++++++++++++++++++---------------- arch/powerpc/perf/hv-24x7.h | 8 +- 2 files changed, 130 insertions(+), 76 deletions(-) -- 1.8.3.1