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#undef TRACE_SYSTEM
#define TRACE_SYSTEM nmi

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

#include <linux/ktime.h>
#include <linux/tracepoint.h>

TRACE_EVENT(nmi_handler,

	TP_PROTO(void *handler, s64 delta_ns, int handled),

	TP_ARGS(handler, delta_ns, handled),

	TP_STRUCT__entry(
		__field(	void *,		handler	)
		__field(	s64,		delta_ns)
		__field(	int,		handled	)
	),

	TP_fast_assign(
		__entry->handler = handler;
		__entry->delta_ns = delta_ns;
		__entry->handled = handled;
	),

	TP_printk("%ps() delta_ns: %lld handled: %d",
		__entry->handler,
		__entry->delta_ns,
		__entry->handled)
);

#endif /* _TRACE_NMI_H */

/* This part ust be outside protection */
#include <trace/define_trace.h>
='/cgit.cgi/linux/net-next.git/diff/include/sound/asequencer.h?id=433e19cf33d34bb6751c874a9c00980552fe508c&id2=191e885a2e130e639bb0c8ee350d7047294f2ce6'>diff)
Drivers: hv: vmbus: finally fix hv_need_to_signal_on_read()
Commit a389fcfd2cb5 ("Drivers: hv: vmbus: Fix signaling logic in hv_need_to_signal_on_read()") added the proper mb(), but removed the test "prev_write_sz < pending_sz" when making the signal decision. As a result, the guest can signal the host unnecessarily, and then the host can throttle the guest because the host thinks the guest is buggy or malicious; finally the user running stress test can perceive intermittent freeze of the guest. This patch brings back the test, and properly handles the in-place consumption APIs used by NetVSC (see get_next_pkt_raw(), put_pkt_raw() and commit_rd_index()). Fixes: a389fcfd2cb5 ("Drivers: hv: vmbus: Fix signaling logic in hv_need_to_signal_on_read()") Signed-off-by: Dexuan Cui <decui@microsoft.com> Reported-by: Rolf Neugebauer <rolf.neugebauer@docker.com> Tested-by: Rolf Neugebauer <rolf.neugebauer@docker.com> Cc: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Cc: Stephen Hemminger <sthemmin@microsoft.com> Cc: <stable@vger.kernel.org> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/sound/asequencer.h')