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#
# Unix Domain Sockets
#

config UNIX
	tristate "Unix domain sockets"
	---help---
	  If you say Y here, you will include support for Unix domain sockets;
	  sockets are the standard Unix mechanism for establishing and
	  accessing network connections.  Many commonly used programs such as
	  the X Window system and syslog use these sockets even if your
	  machine is not connected to any network.  Unless you are working on
	  an embedded system or something similar, you therefore definitely
	  want to say Y here.

	  To compile this driver as a module, choose M here: the module will be
	  called unix.  Note that several important services won't work
	  correctly if you say M here and then neglect to load the module.

	  Say Y unless you know what you are doing.

config UNIX_DIAG
	tristate "UNIX: socket monitoring interface"
	depends on UNIX
	default n
	---help---
	  Support for UNIX socket monitoring interface used by the ss tool.
	  If unsure, say Y.
td colspan='2' class='oid'>0b3589be9b98994ce3d5aeca52445d1f5627c4ba (diff)
perf/x86/intel/rapl: Make package handling more robust
The package management code in RAPL relies on package mapping being available before a CPU is started. This changed with: 9d85eb9119f4 ("x86/smpboot: Make logical package management more robust") because the ACPI/BIOS information turned out to be unreliable, but that left RAPL in broken state. This was not noticed because on a regular boot all CPUs are online before RAPL is initialized. A possible fix would be to reintroduce the mess which allocates a package data structure in CPU prepare and when it turns out to already exist in starting throw it away later in the CPU online callback. But that's a horrible hack and not required at all because RAPL becomes functional for perf only in the CPU online callback. That's correct because user space is not yet informed about the CPU being onlined, so nothing caan rely on RAPL being available on that particular CPU. Move the allocation to the CPU online callback and simplify the hotplug handling. At this point the package mapping is established and correct. This also adds a missing check for available package data in the event_init() function. Reported-by: Yasuaki Ishimatsu <yasu.isimatu@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sebastian Siewior <bigeasy@linutronix.de> Cc: Stephane Eranian <eranian@google.com> Cc: Vince Weaver <vincent.weaver@maine.edu> Fixes: 9d85eb9119f4 ("x86/smpboot: Make logical package management more robust") Link: http://lkml.kernel.org/r/20170131230141.212593966@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'net/sunrpc/timer.c')