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path: root/include/trace/events/page_isolation.h
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#undef TRACE_SYSTEM
#define TRACE_SYSTEM page_isolation

#if !defined(_TRACE_PAGE_ISOLATION_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_PAGE_ISOLATION_H

#include <linux/tracepoint.h>

TRACE_EVENT(test_pages_isolated,

	TP_PROTO(
		unsigned long start_pfn,
		unsigned long end_pfn,
		unsigned long fin_pfn),

	TP_ARGS(start_pfn, end_pfn, fin_pfn),

	TP_STRUCT__entry(
		__field(unsigned long, start_pfn)
		__field(unsigned long, end_pfn)
		__field(unsigned long, fin_pfn)
	),

	TP_fast_assign(
		__entry->start_pfn = start_pfn;
		__entry->end_pfn = end_pfn;
		__entry->fin_pfn = fin_pfn;
	),

	TP_printk("start_pfn=0x%lx end_pfn=0x%lx fin_pfn=0x%lx ret=%s",
		__entry->start_pfn, __entry->end_pfn, __entry->fin_pfn,
		__entry->end_pfn <= __entry->fin_pfn ? "success" : "fail")
);

#endif /* _TRACE_PAGE_ISOLATION_H */

/* This part must be outside protection */
#include <trace/define_trace.h>
loop. So this patch drops all the looping/re-reading of PCIE_HOST_INT_STATUS, which avoids the problematic (and slow) register read in step (e). Incidentally, this is a very similar issue to the one fixed in commit ec815dd2a5f1 ("mwifiex: prevent register accesses after host is sleeping"), except that the register read is just very slow instead of fatal in this case. Tested on 8997 in both MSI and (though not technically supported at the moment) MSI-X mode. Signed-off-by: Brian Norris <briannorris@chromium.org> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
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