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* Merge tag 'rtc-4.8' of ↵Linus Torvalds2016-08-0553-510/+179
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux Pull RTC updates from Alexandre Belloni: "RTC for 4.8 Cleanups: - huge cleanup of rtc-generic and char/genrtc this allowed to cleanup rtc-cmos, rtc-sh, rtc-m68k, rtc-powerpc and rtc-parisc - move mn10300 to rtc-cmos Subsystem: - fix wakealarms after hibernate - multiples fixes for rctest - simplify implementations of .read_alarm New drivers: - Maxim MAX6916 Drivers: - ds1307: fix weekday - m41t80: add wakeup support - pcf85063: add support for PCF85063A variant - rv8803: extend i2c fix and other fixes - s35390a: fix alarm reading, this fixes instant reboot after shutdown for QNAP TS-41x - s3c: clock fixes" * tag 'rtc-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (65 commits) rtc: rv8803: Clear V1F when setting the time rtc: rv8803: Stop the clock while setting the time rtc: rv8803: Always apply the I²C workaround rtc: rv8803: Fix read day of week rtc: rv8803: Remove the check for valid time rtc: rv8803: Kconfig: Indicate rx8900 support rtc: asm9260: remove .owner field for driver rtc: at91sam9: Fix missing spin_lock_init() rtc: m41t80: add suspend handlers for alarm IRQ rtc: m41t80: make it a real error message rtc: pcf85063: Add support for the PCF85063A device rtc: pcf85063: fix year range rtc: hym8563: in .read_alarm set .tm_sec to 0 to signal minute accuracy rtc: explicitly set tm_sec = 0 for drivers with minute accurancy rtc: s3c: Add s3c_rtc_{enable/disable}_clk in s3c_rtc_setfreq() rtc: s3c: Remove unnecessary call to disable already disabled clock rtc: abx80x: use devm_add_action_or_reset() rtc: m41t80: use devm_add_action_or_reset() rtc: fix a typo and reduce three empty lines to one rtc: s35390a: improve two comments in .set_alarm ...
| * rtc: v3020: move rtc-v3020.h to platform_dataAlexandre Belloni2016-07-093-3/+3
| | | | | | | | | | | | | | rtc-v3020.h belongs to include/linux/platform_data/ Acked-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
| * rtc: ds1286: move header to linux/rtcAlexandre Belloni2016-07-081-1/+1
| | | | | | | | | | | | Move ds1286.h to rtc specific folder. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
| * rtc: m48t86: move m48t86.h to platform_dataAlexandre Belloni2016-06-272-2/+2
| | | | | | | | | | | | | | | | | | m48t86.h belongs to include/linux/platform_data/ Acked-by: Jason Cooper <jason@lakedaemon.net> Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com> Acked-by: Alexander Clouter <alex@digriz.org.uk> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
| * rtc: move mc146818 helper functions out-of-lineArnd Bergmann2016-06-261-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The mc146818_get_time/mc146818_set_time functions are rather large inline functions in a global header file and are used in several drivers and in x86 specific code. Here we move them into a separate .c file that is compiled whenever any of the users require it. This also lets us remove the linux/acpi.h header inclusion from mc146818rtc.h, which in turn avoids some warnings about duplicate definition of the TRUE/FALSE macros. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
| * mn10300: use RTC_DRV_CMOS instead of CONFIG_RTCArnd Bergmann2016-06-264-98/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | nn10300 has a dependency on mc146818_get_time/mc146818_set_time, which we want to move from the mc146818rtc.h header into the rtc subsystem, which in turn is not usable on mn10300. This changes mn10300 to use the modern rtc-cmos driver instead of the old RTC driver, and that in turn lets us completely remove the read_persistent_clock/update_persistent_clock callbacks. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
| * x86: include linux/ratelimit.h in nmi.cArnd Bergmann2016-06-061-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When building random configurations, we now occasionally get a new build error: In file included from include/linux/kernel.h:13:0, from include/linux/list.h:8, from include/linux/preempt.h:10, from include/linux/spinlock.h:50, from arch/x86/kernel/nmi.c:13: arch/x86/kernel/nmi.c: In function 'nmi_max_handler': include/linux/printk.h:375:9: error: type defaults to 'int' in declaration of 'DEFINE_RATELIMIT_STATE' [-Werror=implicit-int] static DEFINE_RATELIMIT_STATE(_rs, \ ^ arch/x86/kernel/nmi.c:110:2: note: in expansion of macro 'printk_ratelimited' printk_ratelimited(KERN_INFO ^~~~~~~~~~~~~~~~~~ This was working before the rtc rework series because linux/ratelimit.h was included implictly through asm/mach_traps.h -> asm/mc146818rtc.h -> linux/mc146818rtc.h -> linux/rtc.h -> linux/device.h. We clearly shouldn't rely on this indirect inclusion, so this adds an explicit #include in the file that needs it. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reported-by: kbuild test robot <fengguang.wu@intel.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Fixes: 5ab788d73832 ("rtc: cmos: move mc146818rtc code out of asm-generic/rtc.h") Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
| * sparc32: remove stale RTC_PORT definitionArnd Bergmann2016-06-041-10/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | sparc32:allmodconfig fails to build in next-20160602 as follows. In file included from drivers/block/floppy.c:185:0: include/linux/mc146818rtc.h: In function 'mc146818_is_updating': include/linux/mc146818rtc.h:138:9: error: 'rtc_port' undeclared (first use in this function) include/linux/mc146818rtc.h:138:9: note: each undeclared identifier is reported only once for each function it appears in include/linux/mc146818rtc.h: In function 'mc146818_get_time': include/linux/mc146818rtc.h:172:17: error: 'rtc_port' undeclared (first use in this function) include/linux/mc146818rtc.h: In function 'mc146818_set_time': include/linux/mc146818rtc.h:278:8: error: 'rtc_port' undeclared (first use in this function) scripts/Makefile.build:295: recipe for target 'drivers/block/floppy.o' failed The reason is a duplicate definition of the RTC_PORT macro. The one in arch/sparc/include/asm/io_32.h was apparently used a long time ago for the drivers/char/rtc.c driver that is not available on SPARC any more, since we now select 'RTC_CLASS' unconditionally. Removing the macro fixes the build problem, and for consistency, this also removes the RTC_ALWAYS_BCD macro and the comment for both. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reported-by: Guenter Roeck <linux@roeck-us.net> Fixes: fd09cc80165c ("rtc: cmos: move mc146818rtc code out of asm-generic/rtc.h") Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
| * char/genrtc: remove asm-generic/rtc.h from mipsArnd Bergmann2016-06-041-1/+0
| | | | | | | | | | | | | | | | | | | | arch/mips/sni/time.c includes asm-generic/rtc.h for no apparent reason, and it works fine without that header, so lets remove the inclusion in preparation of deleting the file. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
| * char/genrtc: remove powerpc supportArnd Bergmann2016-06-043-79/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | PowerPC is the last architecture using the GEN_RTC driver on some machines, but we can migrate them all to using the RTC_DRV_GENERIC driver instead now. This moves over the CONFIG_GEN_RTC option from drivers/char into arch/powerpc/platforms/Kconfig and makes it just select the replacement driver instead, for the only reason of not breaking existing defconfig and .config files that users may have. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
| * rtc: powerpc: provide rtc_class_ops directlyArnd Bergmann2016-06-041-1/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The rtc-generic driver provides an architecture specific wrapper on top of the generic rtc_class_ops abstraction, and powerpc has another abstraction on top, which is a bit silly. This changes the powerpc rtc-generic device to provide its rtc_class_ops directly, to reduce the number of layers by one. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Michael Ellerman <mpe@ellerman.id.au> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
| * char/genrtc: remove m68k supportArnd Bergmann2016-06-0413-91/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The asm/rtc.h header is only used for the old gen_rtc driver that has been replaced by rtc-generic. According to Geert Uytterhoeven, nobody has used the old driver on m68k for a long time, so we can now just remove the header file and disallow the driver in Kconfig. All files that used to include asm/rtc.h are now changed so they include the headers that were used implicitly through asm/rtc.h. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Tested-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
| * rtc: m68k: provide ioctl for q40Arnd Bergmann2016-06-041-0/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The q40 platform is the only machine in the kernel that provides RTC_PLL_GET/RTC_PLL_SET ioctl commands in its rtc through the mach_get_rtc_pll/mach_set_rtc_pll callbacks. However, this currenctly works only in the old-style genrtc driver, not the (somewhat) modern rtc-generic driver replacing it. This adds an ioctl implementation to the m68k generic_rtc_ops in order to let both drivers provide the same API. After this, we should be able to remove support for genrtc from the m68k architecture. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Tested-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
| * rtc: m68k: provide rtc_class_ops directlyArnd Bergmann2016-06-041-2/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The rtc-generic driver provides an architecture specific wrapper on top of the generic rtc_class_ops abstraction, and m68k has another abstraction on top, which is a bit silly. This changes the m68k rtc-generic device to provide its rtc_class_ops directly, to reduce the number of layers by one. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Tested-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
| * char/genrtc: remove parisc supportArnd Bergmann2016-06-041-131/+0
| | | | | | | | | | | | | | | | | | | | | | | | This architecture selects RTC_CLASS unconditionally, so the GEN_RTC has not worked here for a long time. Now we can remove both the asm/rtc.h header and the Kconfig dependency for CONFIG_GEN_RTC. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
| * rtc: parisc: provide rtc_class_ops directlyArnd Bergmann2016-06-041-1/+35
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The rtc-generic driver provides an architecture specific wrapper on top of the generic rtc_class_ops abstraction, and on pa-risc, that is implemented using an open-coded version of rtc_time_to_tm/rtc_tm_to_time. This changes the parisc rtc-generic device to provide its rtc_class_ops directly, using the normal helper functions, which makes this y2038 safe (on 32-bit) and simplifies the implementation. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
| * char/genrtc: remove mn10300 supportArnd Bergmann2016-06-044-3/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The genrtc driver serves no purpose on mn10300 because it drives the same hardware as the original rtc.c driver, and the newer rtc-generic.c or rtc-cmos.c drivers on architectures that use the asm-generic/rtc.h header. I assume it was initially only added for completeness when the mn10300 port was done, but the older rtc.c driver was always used instead. We can also stop include asm-generic/rtc.h now, because we just call mc146818_set_time() directly. It would be nice to change the architecture to use the rtc-cmos driver next, and remove support for the old rtc driver as well. [linux@roeck-us.net: Add missing include file to proc-init.c] Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
| * char/genrtc: remove alpha supportArnd Bergmann2016-06-042-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The genrtc driver serves no purpose on Alpha because it drives the same hardware as the original rtc.c driver, and the newer rtc-generic.c or rtc-cmos.c drivers on architectures that use the asm-generic/rtc.h header. The defconfig uses CONFIG_RTC=y, so this driver is not used by default. At one point it was used to abstract a quirk for the "Marvel" platform, but it does not do this any more after the code was moved into yet another driver in arch/alpha/kernel/rtc.c. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
| * rtc: sh: provide rtc_class_ops directlyArnd Bergmann2016-06-042-24/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The rtc-generic driver provides an architecture specific wrapper on top of the generic rtc_class_ops abstraction, and on sh, that goes through another indirection using the rtc_sh_get_time/rtc_sh_set_time functions. This changes the sh rtc-generic device to provide its rtc_class_ops directly, skipping one of the abstraction levels. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Rich Felker <dalias@libc.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
| * char/genrtc: x86: remove remnants of asm/rtc.hArnd Bergmann2016-06-044-6/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 3195ef59cb42 ("x86: Do full rtc synchronization with ntp") had the side-effect of unconditionally enabling the RTC_LIB symbol on x86, which in turn disables the selection of the CONFIG_RTC and CONFIG_GEN_RTC drivers that contain a two older implementations of the CONFIG_RTC_DRV_CMOS driver. This removes x86 from the list for genrtc, and changes all references to the asm/rtc.h header to instead point to the interfaces from linux/mc146818rtc.h. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
| * rtc: cmos: move mc146818rtc code out of asm-generic/rtc.hArnd Bergmann2016-06-044-5/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Drivers should not really include stuff from asm-generic directly, and the PC-style cmos rtc driver does this in order to reuse the mc146818 implementation of get_rtc_time/set_rtc_time rather than the architecture specific one for the architecture it gets built for. To make it more obvious what is going on, this moves and renames the two functions into include/linux/mc146818rtc.h, which holds the other mc146818 specific code. Ideally it would be in a .c file, but that would require extra infrastructure as the functions are called by multiple drivers with conflicting dependencies. With this change, the asm-generic/rtc.h header also becomes much more generic, so it can be reused more easily across any architecture that still relies on the genrtc driver. The only caller of the internal __get_rtc_time/__set_rtc_time functions is in arch/alpha/kernel/rtc.c, and we just change those over to the new naming. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
| * rtc: cmos: remove empty asm/mc146818rtc.h filesArnd Bergmann2016-06-045-51/+0
| | | | | | | | | | | | | | | | | | | | | | | | Nothing on these architectures ever includes the asm/mc146818rtc.h file, the drivers that used to do this have been fixed long ago, and the remaining users are all PC-specific. This removes the files for good. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
* | Merge tag 'powerpc-4.8-2' of ↵Linus Torvalds2016-08-0554-209/+2049
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull more powerpc updates from Michael Ellerman: "These were delayed for various reasons, so I let them sit in next a bit longer, rather than including them in my first pull request. Fixes: - Fix early access to cpu_spec relocation from Benjamin Herrenschmidt - Fix incorrect event codes in power9-event-list from Madhavan Srinivasan - Move register_process_table() out of ppc_md from Michael Ellerman Use jump_label use for [cpu|mmu]_has_feature(): - Add mmu_early_init_devtree() from Michael Ellerman - Move disable_radix handling into mmu_early_init_devtree() from Michael Ellerman - Do hash device tree scanning earlier from Michael Ellerman - Do radix device tree scanning earlier from Michael Ellerman - Do feature patching before MMU init from Michael Ellerman - Check features don't change after patching from Michael Ellerman - Make MMU_FTR_RADIX a MMU family feature from Aneesh Kumar K.V - Convert mmu_has_feature() to returning bool from Michael Ellerman - Convert cpu_has_feature() to returning bool from Michael Ellerman - Define radix_enabled() in one place & use static inline from Michael Ellerman - Add early_[cpu|mmu]_has_feature() from Michael Ellerman - Convert early cpu/mmu feature check to use the new helpers from Aneesh Kumar K.V - jump_label: Make it possible for arches to invoke jump_label_init() earlier from Kevin Hao - Call jump_label_init() in apply_feature_fixups() from Aneesh Kumar K.V - Remove mfvtb() from Kevin Hao - Move cpu_has_feature() to a separate file from Kevin Hao - Add kconfig option to use jump labels for cpu/mmu_has_feature() from Michael Ellerman - Add option to use jump label for cpu_has_feature() from Kevin Hao - Add option to use jump label for mmu_has_feature() from Kevin Hao - Catch usage of cpu/mmu_has_feature() before jump label init from Aneesh Kumar K.V - Annotate jump label assembly from Michael Ellerman TLB flush enhancements from Aneesh Kumar K.V: - radix: Implement tlb mmu gather flush efficiently - Add helper for finding SLBE LLP encoding - Use hugetlb flush functions - Drop multiple definition of mm_is_core_local - radix: Add tlb flush of THP ptes - radix: Rename function and drop unused arg - radix/hugetlb: Add helper for finding page size - hugetlb: Add flush_hugetlb_tlb_range - remove flush_tlb_page_nohash Add new ptrace regsets from Anshuman Khandual and Simon Guo: - elf: Add powerpc specific core note sections - Add the function flush_tmregs_to_thread - Enable in transaction NT_PRFPREG ptrace requests - Enable in transaction NT_PPC_VMX ptrace requests - Enable in transaction NT_PPC_VSX ptrace requests - Adapt gpr32_get, gpr32_set functions for transaction - Enable support for NT_PPC_CGPR - Enable support for NT_PPC_CFPR - Enable support for NT_PPC_CVMX - Enable support for NT_PPC_CVSX - Enable support for TM SPR state - Enable NT_PPC_TM_CTAR, NT_PPC_TM_CPPR, NT_PPC_TM_CDSCR - Enable support for NT_PPPC_TAR, NT_PPC_PPR, NT_PPC_DSCR - Enable support for EBB registers - Enable support for Performance Monitor registers" * tag 'powerpc-4.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (48 commits) powerpc/mm: Move register_process_table() out of ppc_md powerpc/perf: Fix incorrect event codes in power9-event-list powerpc/32: Fix early access to cpu_spec relocation powerpc/ptrace: Enable support for Performance Monitor registers powerpc/ptrace: Enable support for EBB registers powerpc/ptrace: Enable support for NT_PPPC_TAR, NT_PPC_PPR, NT_PPC_DSCR powerpc/ptrace: Enable NT_PPC_TM_CTAR, NT_PPC_TM_CPPR, NT_PPC_TM_CDSCR powerpc/ptrace: Enable support for TM SPR state powerpc/ptrace: Enable support for NT_PPC_CVSX powerpc/ptrace: Enable support for NT_PPC_CVMX powerpc/ptrace: Enable support for NT_PPC_CFPR powerpc/ptrace: Enable support for NT_PPC_CGPR powerpc/ptrace: Adapt gpr32_get, gpr32_set functions for transaction powerpc/ptrace: Enable in transaction NT_PPC_VSX ptrace requests powerpc/ptrace: Enable in transaction NT_PPC_VMX ptrace requests powerpc/ptrace: Enable in transaction NT_PRFPREG ptrace requests powerpc/process: Add the function flush_tmregs_to_thread elf: Add powerpc specific core note sections powerpc/mm: remove flush_tlb_page_nohash powerpc/mm/hugetlb: Add flush_hugetlb_tlb_range ...
| * | powerpc/mm: Move register_process_table() out of ppc_mdMichael Ellerman2016-08-045-5/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We want to initialise register_process_table() before ppc_md is setup, so that it can be called as part of MMU init (at least on Radix ATM). That no longer works because probe_machine() requires that ppc_md be empty before it's called, and we now do probe_machine() much later. So make register_process_table a global for now. It will probably move into a mmu_radix_ops struct at some point in the future. This was broken by me when applying commit 7025776ed1eb "powerpc/mm: Move hash table ops to a separate structure" due to conflicts with other patches. Fixes: 7025776ed1eb ("powerpc/mm: Move hash table ops to a separate structure") Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| * | powerpc/perf: Fix incorrect event codes in power9-event-listMadhavan Srinivasan2016-08-041-3/+3
| | | | | | | | | | | | | | | | | | | | | These have been changed in the hardware, update Linux's version. Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| * | powerpc/32: Fix early access to cpu_spec relocationBenjamin Herrenschmidt2016-08-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 9402c6846131 ("powerpc: Factor do_feature_fixup calls") introduced a subtle bug on 32-bit. When reading the cpu spec from the global, we not only need to do a pointer relocation on the global address but also on the pointer we read from it. This fixes crashes reported on MPC5200 based machines. Fixes: 9402c6846131 ("powerpc: Factor do_feature_fixup calls") Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| * | powerpc/ptrace: Enable support for Performance Monitor registersAnshuman Khandual2016-08-012-1/+77
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch enables support for Performance monitor registers related ELF core note NT_PPC_PMU based ptrace requests through PTRACE_GETREGSET, PTRACE_SETREGSET calls. This is achieved through adding one new register sets REGSET_PMU in powerpc corresponding to the ELF core note sections added in this regard. It also implements the get, set and active functions for this new register sets added. Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: Simon Guo <wei.guo.simon@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| * | powerpc/ptrace: Enable support for EBB registersAnshuman Khandual2016-08-012-0/+76
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch enables support for EBB state registers related ELF core note NT_PPC_EBB based ptrace requests through PTRACE_GETREGSET, PTRACE_SETREGSET calls. This is achieved through adding one new register sets REGSET_EBB in powerpc corresponding to the ELF core note sections added in this regard. It also implements the get, set and active functions for this new register sets added. Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: Simon Guo <wei.guo.simon@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| * | powerpc/ptrace: Enable support for NT_PPPC_TAR, NT_PPC_PPR, NT_PPC_DSCRAnshuman Khandual2016-08-011-0/+117
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch enables support for running TAR, PPR, DSCR registers related ELF core notes NT_PPPC_TAR, NT_PPC_PPR, NT_PPC_DSCR based ptrace requests through PTRACE_GETREGSET, PTRACE_SETREGSET calls. This is achieved through adding three new register sets REGSET_TAR, REGSET_PPR, REGSET_DSCR in powerpc corresponding to the ELF core note sections added in this regad. It implements the get, set and active functions for all these new register sets added. Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: Simon Guo <wei.guo.simon@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| * | powerpc/ptrace: Enable NT_PPC_TM_CTAR, NT_PPC_TM_CPPR, NT_PPC_TM_CDSCRAnshuman Khandual2016-08-011-0/+178
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch enables support for all three TM checkpointed SPR states related ELF core note NT_PPC_TM_CTAR, NT_PPC_TM_CPPR, NT_PPC_TM_CDSCR based ptrace requests through PTRACE_GETREGSET, PTRACE_SETREGSET calls. This is achieved through adding three new register sets REGSET_TM_CTAR, REGSET_TM_CPPR and REGSET_TM_CDSCR in powerpc corresponding to the ELF core note sections added. It implements the get, set and active functions for all these new register sets added. Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: Simon Guo <wei.guo.simon@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| * | powerpc/ptrace: Enable support for TM SPR stateAnshuman Khandual2016-08-012-1/+143
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch enables support for TM SPR state related ELF core note NT_PPC_TM_SPR based ptrace requests through PTRACE_GETREGSET, PTRACE_SETREGSET calls. This is achieved through adding a register set REGSET_TM_SPR in powerpc corresponding to the ELF core note section added. It implements the get, set and active functions for this new register set added. Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: Simon Guo <wei.guo.simon@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| * | powerpc/ptrace: Enable support for NT_PPC_CVSXAnshuman Khandual2016-08-012-0/+130
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch enables support for TM checkpointed VSX register set ELF core note NT_PPC_CVSX based ptrace requests through PTRACE_GETREGSET, PTRACE_SETREGSET calls. This is achieved through adding a register set REGSET_CVSX in powerpc corresponding to the ELF core note section added. It implements the get, set and active functions for this new register set added. Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: Simon Guo <wei.guo.simon@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| * | powerpc/ptrace: Enable support for NT_PPC_CVMXAnshuman Khandual2016-08-012-0/+159
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch enables support for TM checkpointed VMX register set ELF core note NT_PPC_CVMX based ptrace requests through PTRACE_GETREGSET, PTRACE_SETREGSET calls. This is achieved through adding a register set REGSET_CVMX in powerpc corresponding to the ELF core note section added. It implements the get, set and active functions for this new register set added. Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: Simon Guo <wei.guo.simon@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| * | powerpc/ptrace: Enable support for NT_PPC_CFPRAnshuman Khandual2016-08-011-0/+126
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch enables support for TM checkpointed FPR register set ELF core note NT_PPC_CFPR based ptrace requests through PTRACE_GETREGSET, PTRACE_SETREGSET calls. This is achieved through adding a register set REGSET_CFPR in powerpc corresponding to the ELF core note section added. It implements the get, set and active functions for this new register set added. Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: Simon Guo <wei.guo.simon@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| * | powerpc/ptrace: Enable support for NT_PPC_CGPRAnshuman Khandual2016-08-011-0/+222
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch enables support for TM checkpointed GPR register set ELF core note NT_PPC_CGPR based ptrace requests through PTRACE_GETREGSET, PTRACE_SETREGSET calls. This is achieved through adding a register set REGSET_CGPR in powerpc corresponding to the ELF core note section added. It implements the get, set and active functions for this new register set added. Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: Simon Guo <wei.guo.simon@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| * | powerpc/ptrace: Adapt gpr32_get, gpr32_set functions for transactionAnshuman Khandual2016-08-011-13/+51
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch splits gpr32_get, gpr32_set functions to accommodate in transaction ptrace requests implemented in patches later in the series. Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: Simon Guo <wei.guo.simon@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| * | powerpc/ptrace: Enable in transaction NT_PPC_VSX ptrace requestsAnshuman Khandual2016-08-011-0/+64
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch enables in transaction NT_PPC_VSX ptrace requests. The function vsr_get which gets the running value of all VSX registers and the function vsr_set which sets the running value of of all VSX registers work on the running set of VMX registers whose location will be different if transaction is active. This patch makes these functions adapt to situations when the transaction is active. Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: Simon Guo <wei.guo.simon@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| * | powerpc/ptrace: Enable in transaction NT_PPC_VMX ptrace requestsAnshuman Khandual2016-08-011-3/+87
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch enables in transaction NT_PPC_VMX ptrace requests. The function vr_get which gets the running value of all VMX registers and the function vr_set which sets the running value of of all VMX registers work on the running set of VMX registers whose location will be different if transaction is active. This patch makes these functions adapt to situations when the transaction is active. Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: Simon Guo <wei.guo.simon@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| * | powerpc/ptrace: Enable in transaction NT_PRFPREG ptrace requestsAnshuman Khandual2016-08-011-4/+89
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch enables in transaction NT_PRFPREG ptrace requests. The function fpr_get which gets the running value of all FPR registers and the function fpr_set which sets the running value of of all FPR registers work on the running set of FPR registers whose location will be different if transaction is active. This patch makes these functions adapt to situations when the transaction is active. Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: Simon Guo <wei.guo.simon@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| * | powerpc/process: Add the function flush_tmregs_to_threadAnshuman Khandual2016-08-012-0/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch creates a function flush_tmregs_to_thread which will then be used by subsequent patches in this series. The function checks for self tracing ptrace interface attempts while in the TM context and logs appropriate warning message. Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: Simon Guo <wei.guo.simon@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| * | powerpc/mm: remove flush_tlb_page_nohashAneesh Kumar K.V2016-08-015-26/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This should be same as flush_tlb_page except for hash32. For hash32 I guess the existing code is wrong, because we don't seem to be flushing tlb for Hash != 0 case at all. Fix this by switching to calling flush_tlb_page() which does the right thing by flushing tlb for both hash and nohash case with hash32 Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| * | powerpc/mm/hugetlb: Add flush_hugetlb_tlb_rangeAneesh Kumar K.V2016-08-013-0/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | Some archs like ppc64 need to do special things when flushing tlb for hugepage. Add a new helper to flush hugetlb tlb range. This helps us to avoid flushing the entire tlb mapping for the pid. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| * | powerpc/mm/radix/hugetlb: Add helper for finding page size from hstateAneesh Kumar K.V2016-08-014-28/+30
| | | | | | | | | | | | | | | | | | | | | Use the helper instead of open coding the same at multiple place Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| * | powerpc/mm/radix: Rename function and drop unused argAneesh Kumar K.V2016-08-013-15/+15
| | | | | | | | | | | | | | | Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| * | powerpc/mm/radix: Add tlb flush of THP ptesAneesh Kumar K.V2016-08-014-2/+20
| | | | | | | | | | | | | | | | | | | | | Instead of flushing the entire mm, implement a flush_pmd_tlb_range Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| * | powerpc/mm: Drop multiple definition of mm_is_core_localAneesh Kumar K.V2016-08-013-12/+13
| | | | | | | | | | | | | | | Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| * | powerpc/mm: Use hugetlb flush functionsAneesh Kumar K.V2016-08-011-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | Use flush_hugetlb_page instead of flush_tlb_page when we clear flush the pte. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| * | powerpc/mm/hash: Add helper for finding SLBE LLP encodingAneesh Kumar K.V2016-08-013-6/+12
| | | | | | | | | | | | | | | | | | | | | | | | Replace opencoding of the same at multiple places with the helper. No functional change with this patch. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| * | powerpc/mm/radix: Implement tlb mmu gather flush efficientlyAneesh Kumar K.V2016-08-012-1/+60
| | | | | | | | | | | | | | | | | | | | | | | | | | | Now that we track page size in mmu_gather, we can use address based tlbie format when doing a tlb_flush(). We don't do this if we are invalidating the full address space. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| * | powerpc/jump_label: Annotate jump label assemblyMichael Ellerman2016-08-011-2/+2
| | | | | | | | | | | | | | | | | | | | | Add a comment to the generated assembler for jump labels. This makes it easier to identify them in asm listings (generated with $ make foo.s). Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-30 12:44:12 +0000