summaryrefslogtreecommitdiff
path: root/include/trace/events/mdio.h
blob: 00d85f5f54e48422671d263e0e092fa013c9e4f0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
#undef TRACE_SYSTEM
#define TRACE_SYSTEM mdio

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

#include <linux/tracepoint.h>

TRACE_EVENT_CONDITION(mdio_access,

	TP_PROTO(struct mii_bus *bus, char read,
		 u8 addr, unsigned regnum, u16 val, int err),

	TP_ARGS(bus, read, addr, regnum, val, err),

	TP_CONDITION(err >= 0),

	TP_STRUCT__entry(
		__array(char, busid, MII_BUS_ID_SIZE)
		__field(char, read)
		__field(u8, addr)
		__field(u16, val)
		__field(unsigned, regnum)
	),

	TP_fast_assign(
		strncpy(__entry->busid, bus->id, MII_BUS_ID_SIZE);
		__entry->read = read;
		__entry->addr = addr;
		__entry->regnum = regnum;
		__entry->val = val;
	),

	TP_printk("%s %-5s phy:0x%02hhx reg:0x%02x val:0x%04hx",
		  __entry->busid, __entry->read ? "read" : "write",
		  __entry->addr, __entry->regnum, __entry->val)
);

#endif /* if !defined(_TRACE_MDIO_H) || defined(TRACE_HEADER_MULTI_READ) */

/* This part must be outside protection */
#include <trace/define_trace.h>
gi/linux/net-next.git/commit/tools/lib/traceevent/Build?h=nds-private-remove&id=191e885a2e130e639bb0c8ee350d7047294f2ce6'>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 'tools/lib/traceevent/Build')