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Commit b3d6524f authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 

Pull s390 updates from Martin Schwidefsky:

 - The remaining patches for the z13 machine support: kernel build
   option for z13, the cache synonym avoidance, SMT support,
   compare-and-delay for spinloops and the CES5S crypto adapater.

 - The ftrace support for function tracing with the gcc hotpatch option.
   This touches common code Makefiles, Steven is ok with the changes.

 - The hypfs file system gets an extension to access diagnose 0x0c data
   in user space for performance analysis for Linux running under z/VM.

 - The iucv hvc console gets wildcard spport for the user id filtering.

 - The cacheinfo code is converted to use the generic infrastructure.

 - Cleanup and bug fixes.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (42 commits)
  s390/process: free vx save area when releasing tasks
  s390/hypfs: Eliminate hypfs interval
  s390/hypfs: Add diagnose 0c support
  s390/cacheinfo: don't use smp_processor_id() in preemptible context
  s390/zcrypt: fixed domain scanning problem (again)
  s390/smp: increase maximum value of NR_CPUS to 512
  s390/jump label: use different nop instruction
  s390/jump label: add sanity checks
  s390/mm: correct missing space when reporting user process faults
  s390/dasd: cleanup profiling
  s390/dasd: add locking for global_profile access
  s390/ftrace: hotpatch support for function tracing
  ftrace: let notrace function attribute disable hotpatching if necessary
  ftrace: allow architectures to specify ftrace compile options
  s390: reintroduce diag 44 calls for cpu_relax()
  s390/zcrypt: Add support for new crypto express (CEX5S) adapter.
  s390/zcrypt: Number of supported ap domains is not retrievable.
  s390/spinlock: add compare-and-delay to lock wait loops
  s390/tape: remove redundant if statement
  s390/hvc_iucv: add simple wildcard matches to the iucv allow filter
  ...
parents 07f80d41 6a039eab

Documentation/s390/Debugging390.txt

+237 −256

File changed.

Preview size limit exceeded, changes collapsed.

Makefile

+5 −1
Original line number Diff line number Diff line
@@ -726,10 +726,14 @@ KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \ 
endif



ifdef CONFIG_FUNCTION_TRACER

ifndef CC_FLAGS_FTRACE

CC_FLAGS_FTRACE := -pg

endif

export CC_FLAGS_FTRACE

ifdef CONFIG_HAVE_FENTRY

CC_USING_FENTRY	:= $(call cc-option, -mfentry -DCC_USING_FENTRY)

endif

KBUILD_CFLAGS	+= -pg $(CC_USING_FENTRY)

KBUILD_CFLAGS	+= $(CC_FLAGS_FTRACE) $(CC_USING_FENTRY)

KBUILD_AFLAGS	+= $(CC_USING_FENTRY)

ifdef CONFIG_DYNAMIC_FTRACE

	ifdef CONFIG_HAVE_C_RECORDMCOUNT

arch/s390/Kconfig

+34 −8
Original line number Diff line number Diff line
@@ -66,6 +66,7 @@ config S390 
	select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE

	select ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS

	select ARCH_HAS_GCOV_PROFILE_ALL

	select ARCH_HAS_SG_CHAIN

	select ARCH_HAVE_NMI_SAFE_CMPXCHG

	select ARCH_INLINE_READ_LOCK

	select ARCH_INLINE_READ_LOCK_BH
@@ -116,7 +117,6 @@ config S390 
	select HAVE_BPF_JIT if 64BIT && PACK_STACK

	select HAVE_CMPXCHG_DOUBLE

	select HAVE_CMPXCHG_LOCAL

	select HAVE_C_RECORDMCOUNT

	select HAVE_DEBUG_KMEMLEAK

	select HAVE_DYNAMIC_FTRACE if 64BIT

	select HAVE_DYNAMIC_FTRACE_WITH_REGS if 64BIT
@@ -151,7 +151,6 @@ config S390 
	select TTY

	select VIRT_CPU_ACCOUNTING

	select VIRT_TO_BUS

	select ARCH_HAS_SG_CHAIN



config SCHED_OMIT_FRAME_POINTER

	def_bool y
@@ -185,6 +184,10 @@ config HAVE_MARCH_ZEC12_FEATURES 
	def_bool n

	select HAVE_MARCH_Z196_FEATURES



config HAVE_MARCH_Z13_FEATURES

	def_bool n

	select HAVE_MARCH_ZEC12_FEATURES



choice

	prompt "Processor type"

	default MARCH_G5
@@ -244,6 +247,14 @@ config MARCH_ZEC12 
	  2827 series). The kernel will be slightly faster but will not work on

	  older machines.



config MARCH_Z13

	bool "IBM z13"

	select HAVE_MARCH_Z13_FEATURES if 64BIT

	help

	  Select this to enable optimizations for IBM z13 (2964 series).

	  The kernel will be slightly faster but will not work on older

	  machines.



endchoice



config MARCH_G5_TUNE
@@ -267,6 +278,9 @@ config MARCH_Z196_TUNE 
config MARCH_ZEC12_TUNE

	def_bool TUNE_ZEC12 || MARCH_ZEC12 && TUNE_DEFAULT



config MARCH_Z13_TUNE

	def_bool TUNE_Z13 || MARCH_Z13 && TUNE_DEFAULT



choice

	prompt "Tune code generation"

	default TUNE_DEFAULT
@@ -305,6 +319,9 @@ config TUNE_Z196 
config TUNE_ZEC12

	bool "IBM zBC12 and zEC12"



config TUNE_Z13

	bool "IBM z13"



endchoice



config 64BIT
@@ -356,14 +373,14 @@ config SMP 
	  Even if you don't know what to do here, say Y.



config NR_CPUS

	int "Maximum number of CPUs (2-256)"

	range 2 256

	int "Maximum number of CPUs (2-512)"

	range 2 512

	depends on SMP

	default "32" if !64BIT

	default "64" if 64BIT

	help

	  This allows you to specify the maximum number of CPUs which this

	  kernel will support. The maximum supported value is 256 and the

	  kernel will support. The maximum supported value is 512 and the

	  minimum value which makes sense is 2.



	  This is purely to save memory - each supported CPU adds
@@ -378,17 +395,26 @@ config HOTPLUG_CPU 
	  can be controlled through /sys/devices/system/cpu/cpu#.

	  Say N if you want to disable CPU hotplug.



config SCHED_SMT

	def_bool n



config SCHED_MC

	def_bool n



config SCHED_BOOK

	def_bool n



config SCHED_TOPOLOGY

	def_bool y

	prompt "Book scheduler support"

	prompt "Topology scheduler support"

	depends on SMP

	select SCHED_SMT

	select SCHED_MC

	select SCHED_BOOK

	help

	  Book scheduler support improves the CPU scheduler's decision making

	  when dealing with machines that have several books.

	  Topology scheduler support improves the CPU scheduler's decision

	  making when dealing with machines that have multi-threading,

	  multiple cores or multiple books.



source kernel/Kconfig.preempt

arch/s390/Makefile

+12 −0
Original line number Diff line number Diff line
@@ -42,6 +42,7 @@ mflags-$(CONFIG_MARCH_Z9_109) := -march=z9-109 
mflags-$(CONFIG_MARCH_Z10)    := -march=z10

mflags-$(CONFIG_MARCH_Z196)   := -march=z196

mflags-$(CONFIG_MARCH_ZEC12)  := -march=zEC12

mflags-$(CONFIG_MARCH_Z13)   := -march=z13



aflags-y += $(mflags-y)

cflags-y += $(mflags-y)
@@ -53,6 +54,7 @@ cflags-$(CONFIG_MARCH_Z9_109_TUNE) += -mtune=z9-109 
cflags-$(CONFIG_MARCH_Z10_TUNE)		+= -mtune=z10

cflags-$(CONFIG_MARCH_Z196_TUNE)	+= -mtune=z196

cflags-$(CONFIG_MARCH_ZEC12_TUNE)	+= -mtune=zEC12

cflags-$(CONFIG_MARCH_Z13_TUNE)	+= -mtune=z13



#KBUILD_IMAGE is necessary for make rpm

KBUILD_IMAGE	:=arch/s390/boot/image
@@ -85,6 +87,16 @@ ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y) 
cflags-$(CONFIG_WARN_DYNAMIC_STACK) += -mwarn-dynamicstack

endif



ifdef CONFIG_FUNCTION_TRACER

# make use of hotpatch feature if the compiler supports it

cc_hotpatch	:= -mhotpatch=0,3

ifeq ($(call cc-option-yn,$(cc_hotpatch)),y)

CC_FLAGS_FTRACE := $(cc_hotpatch)

KBUILD_AFLAGS	+= -DCC_USING_HOTPATCH

KBUILD_CFLAGS	+= -DCC_USING_HOTPATCH

endif

endif



KBUILD_CFLAGS	+= -mbackchain -msoft-float $(cflags-y)

KBUILD_CFLAGS	+= -pipe -fno-strength-reduce -Wno-sign-compare

KBUILD_AFLAGS	+= $(aflags-y)

arch/s390/boot/compressed/misc.c

+1 −2
Original line number Diff line number Diff line
@@ -8,6 +8,7 @@ 


#include <asm/uaccess.h>

#include <asm/page.h>

#include <asm/sclp.h>

#include <asm/ipl.h>

#include "sizes.h"
@@ -63,8 +64,6 @@ static unsigned long free_mem_end_ptr; 
#include "../../../../lib/decompress_unxz.c"

#endif



extern _sclp_print_early(const char *);



static int puts(const char *s)

{

	_sclp_print_early(s);