Messages in this thread | | | Date | Tue, 26 May 2015 16:44:45 -0700 | From | Stephen Boyd <> | Subject | Re: [PATCH] spmi-pmic-arb: add irq tracepoints to the pmic-arb driver |
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On 05/26/2015 04:39 PM, Ankit Gupta wrote: > The spmi-pmic-arb is also an interrupt controller. It gets a > single aggregate irq and disseminates it to individual > pmic-peripheral drivers. Each pmic-peripheral has a unique apid > number, and can have multiple interrupt capable functions. > The registered apid range shows the lowest and highest apid > numbers of pmic-peripheral drivers which request irqs. Pid is > the base address of that peripheral. For performance measurement, > tracepoints are added at the beginning of the aggregate irq and > at the end of the individual pmic-peripheral irqs. > > Following is a list showing the new tracepoint events: > > spmi_pmic_arb_aggregate_irq_start: aggregate irq number and registered > apid range. > > spmi_pmic_arb_apid_irq_end: apid, irq, func_num, sid and pid. > > SPMI Interrupts tracepoints can be enabled like: > > echo 1 >/sys/kernel/debug/tracing/events/spmi-pmic-arb/enable > > and will dump messages that can be viewed in > /sys/kernel/debug/tracing/trace that look like: > ... spmi_pmic_arb_aggregate_irq_start: irq=150 registered apid range=(3,189) > ... spmi_pmic_arb_apid_irq_end: apid=3 irq=1 func_num=0 sid=0 pid=0x8 > > Suggested-by: Sagar Dharia <sdharia@codeaurora.org> > Signed-off-by: Gilad Avidov <gavidov@codeaurora.org> > Signed-off-by: Ankit Gupta <ankgupta@codeaurora.org> > ---
How is this any better than irq tracepoints that we already have for generic irqs?
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