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Date: Mon, 11 Jan 2016 14:54:38 -0600 From: Shilpasri G Bhat <shilpa.bhat@...ux.vnet.ibm.com> To: linuxppc-dev@...abs.org, linux-kernel@...r.kernel.org Cc: rjw@...ysocki.net, viresh.kumar@...aro.org, linux-pm@...r.kernel.org, pc@...ibm.com, anton@...ba.org, ego@...ux.vnet.ibm.com, <stable@...r.kernel.org>, Shilpasri G Bhat <shilpa.bhat@...ux.vnet.ibm.com>, Ingo Molnar <mingo@...hat.com>, Steven Rostedt <rostedt@...dmis.org> Subject: [PATCH v4 2/4] cpufreq: powernv/tracing: Add powernv_throttle tracepoint This patch adds the powernv_throttle tracepoint to trace the CPU frequency throttling event, which is used by the powernv-cpufreq driver in POWER8. Signed-off-by: Shilpasri G Bhat <shilpa.bhat@...ux.vnet.ibm.com> CC: Ingo Molnar <mingo@...hat.com> CC: Steven Rostedt <rostedt@...dmis.org> --- No changes from v2 and v3. include/trace/events/power.h | 22 ++++++++++++++++++++++ kernel/trace/power-traces.c | 1 + 2 files changed, 23 insertions(+) diff --git a/include/trace/events/power.h b/include/trace/events/power.h index 284244e..19e5030 100644 --- a/include/trace/events/power.h +++ b/include/trace/events/power.h @@ -38,6 +38,28 @@ DEFINE_EVENT(cpu, cpu_idle, TP_ARGS(state, cpu_id) ); +TRACE_EVENT(powernv_throttle, + + TP_PROTO(int chip_id, const char *reason, int pmax), + + TP_ARGS(chip_id, reason, pmax), + + TP_STRUCT__entry( + __field(int, chip_id) + __string(reason, reason) + __field(int, pmax) + ), + + TP_fast_assign( + __entry->chip_id = chip_id; + __assign_str(reason, reason); + __entry->pmax = pmax; + ), + + TP_printk("Chip %d Pmax %d %s", __entry->chip_id, + __entry->pmax, __get_str(reason)) +); + TRACE_EVENT(pstate_sample, TP_PROTO(u32 core_busy, diff --git a/kernel/trace/power-traces.c b/kernel/trace/power-traces.c index eb4220a..81b8745 100644 --- a/kernel/trace/power-traces.c +++ b/kernel/trace/power-traces.c @@ -15,4 +15,5 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(suspend_resume); EXPORT_TRACEPOINT_SYMBOL_GPL(cpu_idle); +EXPORT_TRACEPOINT_SYMBOL_GPL(powernv_throttle); -- 1.9.1
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