#undef TRACE_SYSTEM
#define TRACE_SYSTEM lock

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

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

#ifdef CONFIG_LOCKDEP

TRACE_EVENT(lock_acquire,

	TP_PROTO(struct lockdep_map *lock, unsigned int subclass,
		int trylock, int read, int check,
		struct lockdep_map *next_lock, unsigned long ip),

	TP_ARGS(lock, subclass, trylock, read, check, next_lock, ip),

	TP_STRUCT__entry(
		__field(unsigned int, flags)
		__string(name, lock->name)
		__field(void *, lockdep_addr)
	),

	TP_fast_assign(
		__entry->flags = (trylock ? 1 : 0) | (read ? 2 : 0);
		__assign_str(name, lock->name);
		__entry->lockdep_addr = lock;
	),

	TP_printk("%p %s%s%s", __entry->lockdep_addr,
		  (__entry->flags & 1) ? "try " : "",
		  (__entry->flags & 2) ? "read " : "",
		  __get_str(name))
);

DECLARE_EVENT_CLASS(lock,

	TP_PROTO(struct lockdep_map *lock, unsigned long ip),

	TP_ARGS(lock, ip),

	TP_STRUCT__entry(
		__string(	name, 	lock->name	)
		__field(	void *, lockdep_addr	)
	),

	TP_fast_assign(
		__assign_str(name, lock->name);
		__entry->lockdep_addr = lock;
	),

	TP_printk("%p %s",  __entry->lockdep_addr, __get_str(name))
);

DEFINE_EVENT(lock, lock_release,

	TP_PROTO(struct lockdep_map *lock, unsigned long ip),

	TP_ARGS(lock, ip)
);

#ifdef CONFIG_LOCK_STAT

DEFINE_EVENT(lock, lock_contended,

	TP_PROTO(struct lockdep_map *lock, unsigned long ip),

	TP_ARGS(lock, ip)
);

DEFINE_EVENT(lock, lock_acquired,

	TP_PROTO(struct lockdep_map *lock, unsigned long ip),

	TP_ARGS(lock, ip)
);

#endif
#endif

#endif /* _TRACE_LOCK_H */

/* This part must be outside protection */
#include <trace/define_trace.h>
/usb/dwc2/hw.h'>log</a><a href='/cgit.cgi/linux/net-next.git/tree/drivers/usb/dwc2/hw.h?id=79134d11d030b886106bf45a5638c1ccb1f0856c'>tree</a><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/dwc2/hw.h?id=79134d11d030b886106bf45a5638c1ccb1f0856c'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/dwc2/hw.h?id=79134d11d030b886106bf45a5638c1ccb1f0856c'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/drivers/usb/dwc2/hw.h'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?id=79134d11d030b886106bf45a5638c1ccb1f0856c'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/drivers?id=79134d11d030b886106bf45a5638c1ccb1f0856c'>drivers</a>/<a href='/cgit.cgi/linux/net-next.git/log/drivers/usb?id=79134d11d030b886106bf45a5638c1ccb1f0856c'>usb</a>/<a href='/cgit.cgi/linux/net-next.git/log/drivers/usb/dwc2?id=79134d11d030b886106bf45a5638c1ccb1f0856c'>dwc2</a>/<a href='/cgit.cgi/linux/net-next.git/log/drivers/usb/dwc2/hw.h?id=79134d11d030b886106bf45a5638c1ccb1f0856c'>hw.h</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/drivers/usb/dwc2/hw.h?id=79134d11d030b886106bf45a5638c1ccb1f0856c&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
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<tr><th>author</th><td>Srinivas Pandruvada &lt;srinivas.pandruvada@linux.intel.com&gt;</td><td class='right'>2017-02-03 14:18:39 -0800</td></tr>
<tr><th>committer</th><td>Rafael J. Wysocki &lt;rafael.j.wysocki@intel.com&gt;</td><td class='right'>2017-02-04 00:11:08 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/uapi/drm/Kbuild?id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3'>6e978b22efa1db9f6e71b24440b5f1d93e968ee3</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/uapi/drm/Kbuild?id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3'>c666f7a26b860674848949e39a610222b0723f89</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/uapi/drm/Kbuild?id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3'>include/uapi/drm/Kbuild</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/uapi/drm/Kbuild?id=3c223c19aea85d3dda1416c187915f4a30b04b1f'>3c223c19aea85d3dda1416c187915f4a30b04b1f</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/uapi/drm/Kbuild?id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3&amp;id2=3c223c19aea85d3dda1416c187915f4a30b04b1f'>diff</a>)</td></tr></table>
<div class='commit-subject'>cpufreq: intel_pstate: Disable energy efficiency optimization</div><div class='commit-msg'>Some Kabylake desktop processors may not reach max turbo when running in
HWP mode, even if running under sustained 100% utilization.

This occurs when the HWP.EPP (Energy Performance Preference) is set to
"balance_power" (0x80) -- the default on most systems.

It occurs because the platform BIOS may erroneously enable an
energy-efficiency setting -- MSR_IA32_POWER_CTL BIT-EE, which is not
recommended to be enabled on this SKU.

On the failing systems, this BIOS issue was not discovered when the
desktop motherboard was tested with Windows, because the BIOS also
neglects to provide the ACPI/CPPC table, that Windows requires to enable
HWP, and so Windows runs in legacy P-state mode, where this setting has
no effect.

Linux' intel_pstate driver does not require ACPI/CPPC to enable HWP, and
so it runs in HWP mode, exposing this incorrect BIOS configuration.

There are several ways to address this problem.

First, Linux can also run in legacy P-state mode on this system.
As intel_pstate is how Linux enables HWP, booting with
"intel_pstate=disable"
will run in acpi-cpufreq/ondemand legacy p-state mode.

Or second, the "performance" governor can be used with intel_pstate,
which will modify HWP.EPP to 0.

Or third, starting in 4.10, the
/sys/devices/system/cpu/cpufreq/policy*/energy_performance_preference
attribute in can be updated from "balance_power" to "performance".

Or fourth, apply this patch, which fixes the erroneous setting of
MSR_IA32_POWER_CTL BIT_EE on this model, allowing the default
configuration to function as designed.

Signed-off-by: Srinivas Pandruvada &lt;srinivas.pandruvada@linux.intel.com&gt;
Reviewed-by: Len Brown &lt;len.brown@intel.com&gt;
Cc: 4.6+ &lt;stable@vger.kernel.org&gt; # 4.6+
Signed-off-by: Rafael J. Wysocki &lt;rafael.j.wysocki@intel.com&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3'>Diffstat</a> (limited to 'include/uapi/drm/Kbuild')</div><table summary='diffstat' class='diffstat'>