Messages in this thread |  | | From | Sukadev Bhattiprolu <> | Subject | [PATCH 0/9] powerpc/hv-24x7: Reorganize single_24x7_request() | Date | Tue, 17 Feb 2015 14:00:25 -0800 |
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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
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