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Date: Fri, 18 Jul 2014 01:18:51 -0400 From: Nicolas Pitre <nicolas.pitre@...aro.org> To: Steven Rostedt <rostedt@...dmis.org>, Ingo Molnar <mingo@...hat.com>, Daniel Lezcano <daniel.lezcano@...aro.org>, Russell King - ARM Linux <linux@....linux.org.uk>, Catalin Marinas <catalin.marinas@....com> Cc: linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, linaro-kernel@...ts.linaro.org Subject: [PATCH 0/4] basic IPI tracing Part of the energy aware scheduler work is concerned by test and measurement tools such as idlestat[1]. This relies on the ability to trace wake-up events, mainly IRQs and IPIs. While IRQs are already well instrumented with tracepoints, IPIs are rather lacking on that front, and completely invisible on ARM. This series defines generic IPI tracepoints and adds them to ARM and ARM64. An attempt at adding them to X86 is also included for comments. [1] https://wiki.linaro.org/WorkingGroups/PowerManagement/Resources/Tools/Idlestat diffstat: arch/arm/kernel/smp.c | 72 ++++++++++++++++++++------------ arch/arm64/kernel/smp.c | 67 +++++++++++++++++++----------- arch/x86/kernel/smp.c | 16 ++++++++ include/trace/events/ipi.h | 89 ++++++++++++++++++++++++++++++++++++++++ 4 files changed, 192 insertions(+), 52 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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