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* ARM: samsung: move CONFIG_DEBUG_S3C_UART to Kconfig.debugArnd Bergmann2020-08-192-8/+10
| | | | | | | | | Before we can separate plat-samsung from the individual platforms, this one has to get moved to a place where it remains accessible. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/20200806182059.2431-13-krzk@kernel.org Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
* ARM: samsung: make pm-debug platform independentArnd Bergmann2020-08-197-67/+74
| | | | | | | | | | | | | | The pm-debug code is one of the few things shared between s3c24xx/s3c64xx and the newer s5pv210. In order to make s5pv210 independent of plat-samsung, change the common bits of this code to no longer reference the s3c specific bits. In particular, all the CPU checks need to be moved out of the common code into platform specific files. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/20200806182059.2431-12-krzk@kernel.org Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
* ARM: samsung: remove s3c_pm_debug_init()Arnd Bergmann2020-08-196-22/+6
| | | | | | | | | | | | | | | | | | | | | | On s3c24xx and s3c64xx, this is just a wrapper around s3c_pm_debug_init_uart(), but this function does not exist on s5pv210, which always uses an empty stub as CONFIG_SAMSUNG_ATAGS is normally not set. In a configuration that supports both s5pv210 and s3c64xx, we would always call the s3c64xx function, which is probably incorrect when running on s5pv210. Remove the function call completely on s5pv210 and skip the wrapper on s3c as a cleanup. As a side-effect, the s3c64xx behavior is now always the same, regardless of whether it is a DT-only configuration or both DT and ATAGS are supported for booting. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/20200806182059.2431-11-krzk@kernel.org Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
* ARM: samsung: don't build plat/pm-common for ExynosArnd Bergmann2020-08-191-1/+0
| | | | | | | | | | This file has not had any callers since linux-4.7, so stop building it. Fixes: 5901f4c279f7 ("ARM: EXYNOS: Remove SROM related register settings from mach-exynos") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/20200806182059.2431-10-krzk@kernel.org Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
* usb: gadget: s3c-hsudc: remove platform header dependencyArnd Bergmann2020-08-192-0/+55
| | | | | | | | | | | | | | There is no real phy driver, so s3c-hsudc just pokes the registers itself. Improve this a little by making it a platform data callback like we do for gpios. There is only one board using this driver, and it's unlikely that another would be added, so this is a minimal workaround. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/20200806182059.2431-9-krzk@kernel.org [krzk: Include regs-s3c2443-clock.h in ifdef to fixup build on s3c6400] Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
* usb: gadget: s3c: use platform resourcesArnd Bergmann2020-08-191-146/+0
| | | | | | | | | | The resources are correctly initialized, so just use them instead of relying on hardcoded data from platform headers. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Felipe Balbi <balbi@kernel.org> Link: https://lore.kernel.org/r/20200806182059.2431-8-krzk@kernel.org Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
* ARM: s3c24xx: simplify mach/io.hArnd Bergmann2020-08-192-193/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | s3c24xx has a custom implementation of the inb/outb family of I/O accessors, implementing both general register access and ISA I/O port through a multiplexer. As far as I can tell, the first case has never been needed, and certainly is not used now, as drivers only use inb/outb to actually driver ISA or PCI port I/O. Similarly, the special ISA support is limited to a single machine, the Simtec Electronics BAST (EB2410ITX) with its PC/104 expansion connector, all other machines could simply use the generic implementation from asm/io.h that expects a single memory-mapped address range for byte, word and dword access. As no other machines besides BAST actually selects CONFIG_ISA, this is likely not even necessary. As a cleanup, remove support for the non-ISA access from the helpers, and make the ISA access use the virtual address window that we use elsewhere for PCI I/O ports. In configurations without the BAST machine, this now falls back on the generic implementation from asm/io.h, but the mach/io.h header is still relied on to include a number of other header files implicitly. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/20200806182059.2431-7-krzk@kernel.org Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
* ARM: s3c24xx: pass pointer to clk driver via platform dataKrzysztof Kozlowski2020-08-191-1/+6
| | | | | | | | | | | | Passing pointers directly as platform data is fragile and undocumented. Better to create a platform data structure which explicitly documents what is passed to the driver. Suggested-by: Tomasz Figa <tomasz.figa@gmail.com> Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Stephen Boyd <sboyd@kernel.org> Link: https://lore.kernel.org/r/20200806182059.2431-6-krzk@kernel.org
* ARM: s3c24xx: make S3C24XX_MISCCR access indirectArnd Bergmann2020-08-191-0/+3
| | | | | | | | | | | | | | | | The clk driver uses both a function call into an exported platform file and a direct register access to a hardcoded virtual address for accessing the MISCCR register, both become are a problem for a multiplatform kernel because of the header file dependency. Make this an indirect function call through platform data instead. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Stephen Boyd <sboyd@kernel.org> Link: https://lore.kernel.org/r/20200806182059.2431-5-krzk@kernel.org Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
* ARM: s3c24xx: iotiming: make functions staticArnd Bergmann2020-08-191-3/+3
| | | | | | | | | | There are two functions in this file that are never called from anywhere else, so they should be static to allow the compiler to optimize it better and not pollute the global namespace. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/20200806182059.2431-4-krzk@kernel.org Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
* ARM: s3c24xx: fix mmc gpio lookup tablesArnd Bergmann2020-08-195-9/+9
| | | | | | | | | | | | The gpio controller names differ between s3c24xx and s3c64xx, and it seems that these all got the wrong names, using GPx instead of GPIOx. Fixes: d2951dfa070d ("mmc: s3cmci: Use the slot GPIO descriptor") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20200806182059.2431-3-krzk@kernel.org Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
* ARM: s3c24xx: fix missing system resetKrzysztof Kozlowski2020-08-191-0/+2
| | | | | | | | | | | Commit f6361c6b3880 ("ARM: S3C24XX: remove separate restart code") removed usage of the watchdog reset platform code in favor of the Samsung SoC watchdog driver. However the latter was not selected thus S3C24xx platforms lost reset abilities. Cc: <stable@vger.kernel.org> Fixes: f6361c6b3880 ("ARM: S3C24XX: remove separate restart code") Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
* ARM: s3c64xx: switch to generic watchdog driver resetKrzysztof Kozlowski2020-08-1918-162/+2
| | | | | | | | | | | | | | | | | | | | | | | | Similarly to commit f6361c6b3880 ("ARM: S3C24XX: remove separate restart code"), the platform watchdog reset code can be removed in favor of a generic watchdog driver which already handles reset. This allows removal of a bunch of machine code and fixes also W=1 compile warnings: arch/arm/plat-samsung/watchdog-reset.c:29:6: warning: no previous prototype for 'samsung_wdt_reset' [-Wmissing-prototypes] arch/arm/plat-samsung/watchdog-reset.c:69:13: warning: no previous prototype for 'samsung_wdt_reset_of_init' [-Wmissing-prototypes] arch/arm/plat-samsung/watchdog-reset.c:89:13: warning: no previous prototype for 'samsung_wdt_reset_init' [-Wmissing-prototypes] The generic watchdog-based system reset is not exactly the same as before. The previous method had a fallback to soft_restart() which now is gone. The commit also removes a FIXME note about calling s3c64xx_clk_init() inside s3c64xx_init_irq(). No one fixed this since long time and the note is not meaningful anymore because watchdog part is removed. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Reviewed-by: Tomasz Figa <tomasz.figa@gmail.com>
* ARM: samsung: remove HAVE_S3C2410_WATCHDOG and use direct dependenciesKrzysztof Kozlowski2020-08-194-5/+0
| | | | | | | | | | | | | | | | A separate Kconfig option HAVE_S3C2410_WATCHDOG for Samsung SoCs is not really needed and the s3c24xx watchdog driver can depend on Samsung ARM architectures instead. The "HAVE_xxx_WATCHDOG" pattern of dependency is not popular and Samsung platforms are here exceptions. All others just depend on CONFIG_ARCH_xxx. This makes the code slightly smaller without any change in functionality. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Acked-by: Guenter Roeck <linux@roeck-us.net>
* ARM: s3c24xx: drop s3c-camif setup platform codeKrzysztof Kozlowski2020-08-193-74/+0
| | | | | | | | | | | | The s3c-camif driver setup platform code does not have any users so it can be safely removed. Along with the code W=1 compile warnings go away: arch/arm/mach-s3c24xx/setup-camif.c:28:5: warning: no previous prototype for 's3c_camif_gpio_get' [-Wmissing-prototypes] arch/arm/mach-s3c24xx/setup-camif.c:56:6: warning: no previous prototype for 's3c_camif_gpio_put' [-Wmissing-prototypes] Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
* ARM: samsung: fix kerneldoc of s3c_pm_do_restore_core()Krzysztof Kozlowski2020-08-171-0/+2
| | | | | | | | | Fix W=1 compile warnings (invalid kerneldoc): arch/arm/plat-samsung/pm-common.c:68: warning: Function parameter or member 'ptr' not described in 's3c_pm_do_restore_core' arch/arm/plat-samsung/pm-common.c:68: warning: Function parameter or member 'count' not described in 's3c_pm_do_restore_core' Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
* ARM: s3c: remove unneeded machine header includesKrzysztof Kozlowski2020-08-1731-32/+0
| | | | | | | | Not all units use the contents of mach/hardware.h and mach/dma.h. Remove these includes when not needed. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Acked-by: Arnd Bergmann <arnd@arndb.de>
* ARM: s3c24xx: ts: document function argumentKrzysztof Kozlowski2020-08-171-0/+1
| | | | | | | | | Document function argument in kerneldoc comment to fix W=1 compile warning: arch/arm/mach-s3c24xx/setup-ts.c:27: warning: Function parameter or member 'dev' not described in 's3c24xx_ts_cfg_gpio' Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
* ARM: s3c24xx: ts: include platform data headerKrzysztof Kozlowski2020-08-171-0/+2
| | | | | | | | | | Include platform_data/touchscreen-s3c2410.h header in the touchscreen code to bring the prototypes of defined functions and fix W=1 compile warning: arch/arm/mach-s3c24xx/setup-ts.c:24:6: warning: no previous prototype for 's3c24xx_ts_cfg_gpio' [-Wmissing-prototypes] Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
* ARM: s3c24xx: sdhci: include plat/sdhci.h headerKrzysztof Kozlowski2020-08-171-0/+1
| | | | | | | | | | Include plat/sdhci.h header in the sdhci code to bring the prototypes of defined functions and fix W=1 compile warnings: arch/arm/mach-s3c24xx/setup-sdhci-gpio.c:21:6: warning: no previous prototype for 's3c2416_setup_sdhci0_cfg_gpio' [-Wmissing-prototypes] arch/arm/mach-s3c24xx/setup-sdhci-gpio.c:26:6: warning: no previous prototype for 's3c2416_setup_sdhci1_cfg_gpio' [-Wmissing-prototypes] Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
* ARM: s3c24xx: include common.h header in s3c2443.cKrzysztof Kozlowski2020-08-171-0/+1
| | | | | | | | | | | Include common.h header in the s3c2443.c to bring the prototypes of defined functions and fix W=1 compile warnings: arch/arm/mach-s3c24xx/s3c2443.c:60:12: warning: no previous prototype for 's3c2443_init' [-Wmissing-prototypes] arch/arm/mach-s3c24xx/s3c2443.c:77:13: warning: no previous prototype for 's3c2443_init_uarts' [-Wmissing-prototypes] arch/arm/mach-s3c24xx/s3c2443.c:88:13: warning: no previous prototype for 's3c2443_map_io' [-Wmissing-prototypes] Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
* ARM: s3c: remove plat-samsung/.../samsung-time.hKrzysztof Kozlowski2020-08-1737-61/+25
| | | | | | | | | | | | | | | | Remove the arch/arm/plat-samsung/include/plat/samsung-time.h header and move the contents to common.h headers in mach-s3c24xx and mach-s3c64xx. The definition of declared functions is already in common.c in mach directories, so it is logically to put declaration next to them. This is also one step further towards removal of plat-samsung directory and it fixes W=1 build warnings: arch/arm/mach-s3c64xx/common.c:174:13: warning: no previous prototype for 'samsung_set_timer_source' [-Wmissing-prototypes] arch/arm/mach-s3c64xx/common.c:180:13: warning: no previous prototype for 'samsung_timer_init' [-Wmissing-prototypes] Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Reviewed-by: Tomasz Figa <tomasz.figa@gmail.com>
* clk: samsung: s3c24xx: declare s3c24xx_common_clk_init() in shared headerKrzysztof Kozlowski2020-08-172-15/+1
| | | | | | | | | | | | | | | | | The s3c2410_common_clk_init() and others are defined and used by the clk-s3c24xx driver and also used in the mach-s3c24xx machine code. Move the declaration to a header to fix W=1 build warnings: drivers/clk/samsung/clk-s3c2410.c:320:13: warning: no previous prototype for 's3c2410_common_clk_init' [-Wmissing-prototypes] 320 | void __init s3c2410_common_clk_init(struct device_node *np, unsigned long xti_f, drivers/clk/samsung/clk-s3c2412.c:205:13: warning: no previous prototype for 's3c2412_common_clk_init' [-Wmissing-prototypes] 205 | void __init s3c2412_common_clk_init(struct device_node *np, unsigned long xti_f, drivers/clk/samsung/clk-s3c2443.c:341:13: warning: no previous prototype for 's3c2443_common_clk_init' [-Wmissing-prototypes] 341 | void __init s3c2443_common_clk_init(struct device_node *np, unsigned long xti_f, Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Acked-by: Chanwoo Choi <cw00.choi@samsung.com> Reviewed-by: Stephen Boyd <sboyd@kernel.org>
* clk: samsung: s3c64xx: declare s3c64xx_clk_init() in shared headerKrzysztof Kozlowski2020-08-172-2/+1
| | | | | | | | | | | | | | The s3c64xx_clk_init() is defined and used by the clk-s3c64xx driver and also used in the mach-s3c64xx machine code. Move the declaration to a header to fix W=1 build warning: drivers/clk/samsung/clk-s3c64xx.c:391:13: warning: no previous prototype for 's3c64xx_clk_init' [-Wmissing-prototypes] 391 | void __init s3c64xx_clk_init(struct device_node *np, unsigned long xtal_f, Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Reviewed-by: Tomasz Figa <tomasz.figa@gmail.com> Acked-by: Chanwoo Choi <cw00.choi@samsung.com> Reviewed-by: Stephen Boyd <sboyd@kernel.org>
* ARM: samsung: fix language typoKrzysztof Kozlowski2020-08-171-2/+2
| | | | | | | Fix Complie -> Compile Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Reviewed-by: Stephen Boyd <sboyd@kernel.org>
* ARM: s3c24xx: demote kerneldoc commentKrzysztof Kozlowski2020-08-171-2/+2
| | | | | | | | | | Remove kerneldoc annotation to fix warning: arch/arm/mach-s3c24xx/mach-h1940.c:185: warning: cannot understand function prototype: 'struct s3c2410fb_display h1940_lcd __initdata = ' Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Acked-by: Randy Dunlap <rdunlap@infradead.org>
* ARM: s3c64xx: include header to fix -Wmissing-prototypesKrzysztof Kozlowski2020-08-171-0/+1
| | | | | | | | | | | | Include the spi-s3c64xx.h header to fix W=1 build warning: arch/arm/mach-s3c64xx/setup-spi.c:11:5: warning: no previous prototype for 's3c64xx_spi0_cfg_gpio' [-Wmissing-prototypes] 11 | int s3c64xx_spi0_cfg_gpio(void) Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Reviewed-by: Tomasz Figa <tomasz.figa@gmail.com> Reviewed-by: Stephen Boyd <sboyd@kernel.org>
* ARM: s3c64xx: use simple i2c probe functionStephen Kitt2020-08-171-3/+2
| | | | | | | | | | | | | The i2c probe functions here don't use the id information provided in their second argument, so the single-parameter i2c probe function ("probe_new") can be used instead. This avoids scanning the identifier tables during probes. Signed-off-by: Stephen Kitt <steve@sk2.org> Acked-by: Wolfram Sang <wsa@kernel.org> Reviewed-by: Luca Ceresoli <luca@lucaceresoli.net> Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
* ARM: s3c64xx: fix return value check in s3c_usb_otgphy_init()Qinglang Miao2020-08-171-1/+1
| | | | | | | | | The function clk_get() returns ERR_PTR() in case of error and never returns NULL. So there's no need to test whether xusbxti is NULL, just remove the redundant part in the return value check. Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com> Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
* all arch: remove system call sys_sysctlXiaoming Ni2020-08-142-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since commit 61a47c1ad3a4dc ("sysctl: Remove the sysctl system call"), sys_sysctl is actually unavailable: any input can only return an error. We have been warning about people using the sysctl system call for years and believe there are no more users. Even if there are users of this interface if they have not complained or fixed their code by now they probably are not going to, so there is no point in warning them any longer. So completely remove sys_sysctl on all architectures. [nixiaoming@huawei.com: s390: fix build error for sys_call_table_emu] Link: http://lkml.kernel.org/r/20200618141426.16884-1-nixiaoming@huawei.com Signed-off-by: Xiaoming Ni <nixiaoming@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Will Deacon <will@kernel.org> [arm/arm64] Acked-by: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Aleksa Sarai <cyphar@cyphar.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Andi Kleen <ak@linux.intel.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Bin Meng <bin.meng@windriver.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: chenzefeng <chenzefeng2@huawei.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Christian Brauner <christian@brauner.io> Cc: Chris Zankel <chris@zankel.net> Cc: David Howells <dhowells@redhat.com> Cc: David S. Miller <davem@davemloft.net> Cc: Diego Elio Pettenò <flameeyes@flameeyes.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Dominik Brodowski <linux@dominikbrodowski.net> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Helge Deller <deller@gmx.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Iurii Zaikin <yzaikin@google.com> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kars de Jong <jongk@linux-m68k.org> Cc: Kees Cook <keescook@chromium.org> Cc: Krzysztof Kozlowski <krzk@kernel.org> Cc: Luis Chamberlain <mcgrof@kernel.org> Cc: Marco Elver <elver@google.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Martin K. Petersen <martin.petersen@oracle.com> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Matt Turner <mattst88@gmail.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Simek <monstr@monstr.eu> Cc: Miklos Szeredi <mszeredi@redhat.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: Nick Piggin <npiggin@gmail.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Olof Johansson <olof@lixom.net> Cc: Paul Burton <paulburton@kernel.org> Cc: "Paul E. McKenney" <paulmck@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Rich Felker <dalias@libc.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Sami Tolvanen <samitolvanen@google.com> Cc: Sargun Dhillon <sargun@sargun.me> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Sudeep Holla <sudeep.holla@arm.com> Cc: Sven Schnelle <svens@stackframe.org> Cc: Thiago Jung Bauermann <bauerman@linux.ibm.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tony Luck <tony.luck@intel.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Zhou Yanjie <zhouyanjie@wanyeetech.com> Link: http://lkml.kernel.org/r/20200616030734.87257-1-nixiaoming@huawei.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge tag 'timers-urgent-2020-08-14' of ↵Linus Torvalds2020-08-141-1/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timekeeping updates from Thomas Gleixner: "A set of timekeeping/VDSO updates: - Preparatory work to allow S390 to switch over to the generic VDSO implementation. S390 requires that the VDSO data pointer is handed in to the counter read function when time namespace support is enabled. Adding the pointer is a NOOP for all other architectures because the compiler is supposed to optimize that out when it is unused in the architecture specific inline. The change also solved a similar problem for MIPS which fortunately has time namespaces not yet enabled. S390 needs to update clock related VDSO data independent of the timekeeping updates. This was solved so far with yet another sequence counter in the S390 implementation. A better solution is to utilize the already existing VDSO sequence count for this. The core code now exposes helper functions which allow to serialize against the timekeeper code and against concurrent readers. S390 needs extra data for their clock readout function. The initial common VDSO data structure did not provide a way to add that. It now has an embedded architecture specific struct embedded which defaults to an empty struct. Doing this now avoids tree dependencies and conflicts post rc1 and allows all other architectures which work on generic VDSO support to work from a common upstream base. - A trivial comment fix" * tag 'timers-urgent-2020-08-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: time: Delete repeated words in comments lib/vdso: Allow to add architecture-specific vdso data timekeeping/vsyscall: Provide vdso_update_begin/end() vdso/treewide: Add vdso_data pointer argument to __arch_get_hw_counter()
| * vdso/treewide: Add vdso_data pointer argument to __arch_get_hw_counter()Thomas Gleixner2020-08-061-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | MIPS already uses and S390 will need the vdso data pointer in __arch_get_hw_counter(). This works nicely as long as the architecture does not support time namespaces in the VDSO. With time namespaces enabled the regular accessor to the vdso data pointer __arch_get_vdso_data() will return the namespace specific VDSO data page for tasks which are part of a non-root time namespace. This would cause the architectures which need the vdso data pointer in __arch_get_hw_counter() to access the wrong vdso data page. Add a vdso_data pointer argument to __arch_get_hw_counter() and hand it in from the call sites in the core code. For architectures which do not need the data pointer in their counter accessor function the compiler will just optimize it out. Fix up all existing architecture implementations and make MIPS utilize the pointer instead of invoking the accessor function. No functional change and no change in the resulting object code (except MIPS). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/draft-87wo2ekuzn.fsf@nanos.tec.linutronix.de
* | Merge branch 'akpm' (patches from Andrew)Linus Torvalds2020-08-123-21/+10
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Merge more updates from Andrew Morton: - most of the rest of MM (memcg, hugetlb, vmscan, proc, compaction, mempolicy, oom-kill, hugetlbfs, migration, thp, cma, util, memory-hotplug, cleanups, uaccess, migration, gup, pagemap), - various other subsystems (alpha, misc, sparse, bitmap, lib, bitops, checkpatch, autofs, minix, nilfs, ufs, fat, signals, kmod, coredump, exec, kdump, rapidio, panic, kcov, kgdb, ipc). * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (164 commits) mm/gup: remove task_struct pointer for all gup code mm: clean up the last pieces of page fault accountings mm/xtensa: use general page fault accounting mm/x86: use general page fault accounting mm/sparc64: use general page fault accounting mm/sparc32: use general page fault accounting mm/sh: use general page fault accounting mm/s390: use general page fault accounting mm/riscv: use general page fault accounting mm/powerpc: use general page fault accounting mm/parisc: use general page fault accounting mm/openrisc: use general page fault accounting mm/nios2: use general page fault accounting mm/nds32: use general page fault accounting mm/mips: use general page fault accounting mm/microblaze: use general page fault accounting mm/m68k: use general page fault accounting mm/ia64: use general page fault accounting mm/hexagon: use general page fault accounting mm/csky: use general page fault accounting ...
| * | mm/arm: use general page fault accountingPeter Xu2020-08-121-19/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the general page fault accounting by passing regs into handle_mm_fault(). It naturally solve the issue of multiple page fault accounting when page fault retry happened. To do this, we need to pass the pt_regs pointer into __do_page_fault(). Fix PERF_COUNT_SW_PAGE_FAULTS perf event manually for page fault retries, by moving it before taking mmap_sem. Signed-off-by: Peter Xu <peterx@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Will Deacon <will@kernel.org> Link: http://lkml.kernel.org/r/20200707225021.200906-5-peterx@redhat.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | mm: do page fault accounting in handle_mm_faultPeter Xu2020-08-121-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch series "mm: Page fault accounting cleanups", v5. This is v5 of the pf accounting cleanup series. It originates from Gerald Schaefer's report on an issue a week ago regarding to incorrect page fault accountings for retried page fault after commit 4064b9827063 ("mm: allow VM_FAULT_RETRY for multiple times"): https://lore.kernel.org/lkml/20200610174811.44b94525@thinkpad/ What this series did: - Correct page fault accounting: we do accounting for a page fault (no matter whether it's from #PF handling, or gup, or anything else) only with the one that completed the fault. For example, page fault retries should not be counted in page fault counters. Same to the perf events. - Unify definition of PERF_COUNT_SW_PAGE_FAULTS: currently this perf event is used in an adhoc way across different archs. Case (1): for many archs it's done at the entry of a page fault handler, so that it will also cover e.g. errornous faults. Case (2): for some other archs, it is only accounted when the page fault is resolved successfully. Case (3): there're still quite some archs that have not enabled this perf event. Since this series will touch merely all the archs, we unify this perf event to always follow case (1), which is the one that makes most sense. And since we moved the accounting into handle_mm_fault, the other two MAJ/MIN perf events are well taken care of naturally. - Unify definition of "major faults": the definition of "major fault" is slightly changed when used in accounting (not VM_FAULT_MAJOR). More information in patch 1. - Always account the page fault onto the one that triggered the page fault. This does not matter much for #PF handlings, but mostly for gup. More information on this in patch 25. Patchset layout: Patch 1: Introduced the accounting in handle_mm_fault(), not enabled. Patch 2-23: Enable the new accounting for arch #PF handlers one by one. Patch 24: Enable the new accounting for the rest outliers (gup, iommu, etc.) Patch 25: Cleanup GUP task_struct pointer since it's not needed any more This patch (of 25): This is a preparation patch to move page fault accountings into the general code in handle_mm_fault(). This includes both the per task flt_maj/flt_min counters, and the major/minor page fault perf events. To do this, the pt_regs pointer is passed into handle_mm_fault(). PERF_COUNT_SW_PAGE_FAULTS should still be kept in per-arch page fault handlers. So far, all the pt_regs pointer that passed into handle_mm_fault() is NULL, which means this patch should have no intented functional change. Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Peter Xu <peterx@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Cain <bcain@codeaurora.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Chris Zankel <chris@zankel.net> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: David S. Miller <davem@davemloft.net> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Gerald Schaefer <gerald.schaefer@de.ibm.com> Cc: Greentime Hu <green.hu@gmail.com> Cc: Guo Ren <guoren@kernel.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Helge Deller <deller@gmx.de> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: James E.J. Bottomley <James.Bottomley@HansenPartnership.com> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Jonas Bonn <jonas@southpole.se> Cc: Ley Foon Tan <ley.foon.tan@intel.com> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Matt Turner <mattst88@gmail.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Simek <monstr@monstr.eu> Cc: Nick Hu <nickhu@andestech.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Richard Henderson <rth@twiddle.net> Cc: Rich Felker <dalias@libc.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Stafford Horne <shorne@gmail.com> Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vincent Chen <deanbo422@gmail.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Will Deacon <will@kernel.org> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Link: http://lkml.kernel.org/r/20200707225021.200906-1-peterx@redhat.com Link: http://lkml.kernel.org/r/20200707225021.200906-2-peterx@redhat.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | uaccess: remove segment_eqChristoph Hellwig2020-08-121-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | segment_eq is only used to implement uaccess_kernel. Just open code uaccess_kernel in the arch uaccess headers and remove one layer of indirection. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Acked-by: Greentime Hu <green.hu@gmail.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Nick Hu <nickhu@andestech.com> Cc: Vincent Chen <deanbo422@gmail.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Link: http://lkml.kernel.org/r/20200710135706.537715-5-hch@lst.de Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | syscalls: use uaccess_kernel in addr_limit_user_checkChristoph Hellwig2020-08-121-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch series "clean up address limit helpers", v2. In preparation for eventually phasing out direct use of set_fs(), this series removes the segment_eq() arch helper that is only used to implement or duplicate the uaccess_kernel() API, and then adds descriptive helpers to force the kernel address limit. This patch (of 6): Use the uaccess_kernel helper instead of duplicating it. [hch@lst.de: arm: don't call addr_limit_user_check for nommu] Link: http://lkml.kernel.org/r/20200721045834.GA9613@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Tested-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Nick Hu <nickhu@andestech.com> Cc: Greentime Hu <green.hu@gmail.com> Cc: Vincent Chen <deanbo422@gmail.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Link: http://lkml.kernel.org/r/20200714105505.935079-1-hch@lst.de Link: http://lkml.kernel.org/r/20200710135706.537715-1-hch@lst.de Link: http://lkml.kernel.org/r/20200710135706.537715-2-hch@lst.de Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | Merge tag 'iommu-updates-v5.9' of ↵Linus Torvalds2020-08-111-3/+0
|\ \ \ | |/ / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu Pull iommu updates from Joerg Roedel: - Remove of the dev->archdata.iommu (or similar) pointers from most architectures. Only Sparc is left, but this is private to Sparc as their drivers don't use the IOMMU-API. - ARM-SMMU updates from Will Deacon: - Support for SMMU-500 implementation in Marvell Armada-AP806 SoC - Support for SMMU-500 implementation in NVIDIA Tegra194 SoC - DT compatible string updates - Remove unused IOMMU_SYS_CACHE_ONLY flag - Move ARM-SMMU drivers into their own subdirectory - Intel VT-d updates from Lu Baolu: - Misc tweaks and fixes for vSVA - Report/response page request events - Cleanups - Move the Kconfig and Makefile bits for the AMD and Intel drivers into their respective subdirectory. - MT6779 IOMMU Support - Support for new chipsets in the Renesas IOMMU driver - Other misc cleanups and fixes (e.g. to improve compile test coverage) * tag 'iommu-updates-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (77 commits) iommu/amd: Move Kconfig and Makefile bits down into amd directory iommu/vt-d: Move Kconfig and Makefile bits down into intel directory iommu/arm-smmu: Move Arm SMMU drivers into their own subdirectory iommu/vt-d: Skip TE disabling on quirky gfx dedicated iommu iommu: Add gfp parameter to io_pgtable_ops->map() iommu: Mark __iommu_map_sg() as static iommu/vt-d: Rename intel-pasid.h to pasid.h iommu/vt-d: Add page response ops support iommu/vt-d: Report page request faults for guest SVA iommu/vt-d: Add a helper to get svm and sdev for pasid iommu/vt-d: Refactor device_to_iommu() helper iommu/vt-d: Disable multiple GPASID-dev bind iommu/vt-d: Warn on out-of-range invalidation address iommu/vt-d: Fix devTLB flush for vSVA iommu/vt-d: Handle non-page aligned address iommu/vt-d: Fix PASID devTLB invalidation iommu/vt-d: Remove global page support in devTLB flush iommu/vt-d: Enforce PASID devTLB field mask iommu: Make some functions static iommu/amd: Remove double zero check ...
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| *---. \ Merge branches 'arm/renesas', 'arm/qcom', 'arm/mediatek', 'arm/omap', ↵Joerg Roedel2020-07-291-3/+0
| |\ \ \ \ | | | | | | | | | | | | | | | | | | 'arm/exynos', 'arm/smmu', 'ppc/pamu', 'x86/vt-d', 'x86/amd' and 'core' into next
| | | | * | arm: Remove dev->archdata.iommu pointerJoerg Roedel2020-06-301-3/+0
| | | |/ / | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are no users left, all drivers have been converted to use the per-device private pointer offered by IOMMU core. Signed-off-by: Joerg Roedel <jroedel@suse.de> Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com> Link: https://lore.kernel.org/r/20200625130836.1916-12-joro@8bytes.org
* | | | | Merge tag 'kbuild-v5.9' of ↵Linus Torvalds2020-08-091-7/+2
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild updates from Masahiro Yamada: - run the checker (e.g. sparse) after the compiler - remove unneeded cc-option tests for old compiler flags - fix tar-pkg to install dtbs - introduce ccflags-remove-y and asflags-remove-y syntax - allow to trace functions in sub-directories of lib/ - introduce hostprogs-always-y and userprogs-always-y syntax - various Makefile cleanups * tag 'kbuild-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: kbuild: stop filtering out $(GCC_PLUGINS_CFLAGS) from cc-option base kbuild: include scripts/Makefile.* only when relevant CONFIG is enabled kbuild: introduce hostprogs-always-y and userprogs-always-y kbuild: sort hostprogs before passing it to ifneq kbuild: move host .so build rules to scripts/gcc-plugins/Makefile kbuild: Replace HTTP links with HTTPS ones kbuild: trace functions in subdirectories of lib/ kbuild: introduce ccflags-remove-y and asflags-remove-y kbuild: do not export LDFLAGS_vmlinux kbuild: always create directories of targets powerpc/boot: add DTB to 'targets' kbuild: buildtar: add dtbs support kbuild: remove cc-option test of -ffreestanding kbuild: remove cc-option test of -fno-stack-protector Revert "kbuild: Create directory for target DTB" kbuild: run the checker after the compiler
| * | | | | kbuild: introduce ccflags-remove-y and asflags-remove-yMasahiro Yamada2020-08-101-5/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | CFLAGS_REMOVE_<file>.o filters out flags when compiling a particular object, but there is no convenient way to do that for every object in a directory. Add ccflags-remove-y and asflags-remove-y to make it easily. Use ccflags-remove-y to clean up some Makefiles. The add/remove order works as follows: [1] KBUILD_CFLAGS specifies compiler flags used globally [2] ccflags-y adds compiler flags for all objects in the current Makefile [3] ccflags-remove-y removes compiler flags for all objects in the current Makefile (New feature) [4] CFLAGS_<file> adds compiler flags per file. [5] CFLAGS_REMOVE_<file> removes compiler flags per file. Having [3] before [4] allows us to remove flags from most (but not all) objects in the current Makefile. For example, kernel/trace/Makefile removes $(CC_FLAGS_FTRACE) from all objects in the directory, then adds it back to trace_selftest_dynamic.o and CFLAGS_trace_kprobe_selftest.o The same applies to lib/livepatch/Makefile. Please note ccflags-remove-y has no effect to the sub-directories. In contrast, the previous notation got rid of compiler flags also from all the sub-directories. The following are not affected because they have no sub-directories: arch/arm/boot/compressed/ arch/powerpc/xmon/ arch/sh/ kernel/trace/ However, lib/ has several sub-directories. To keep the behavior, I added ccflags-remove-y to all Makefiles in subdirectories of lib/, except the following: lib/vdso/Makefile - Kbuild does not descend into this Makefile lib/raid/test/Makefile - This is not used for the kernel build I think commit 2464a609ded0 ("ftrace: do not trace library functions") excluded too much. In the next commit, I will remove ccflags-remove-y from the sub-directories of lib/. Suggested-by: Sami Tolvanen <samitolvanen@google.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) Acked-by: Brendan Higgins <brendanhiggins@google.com> (KUnit) Tested-by: Anders Roxell <anders.roxell@linaro.org>
| * | | | | kbuild: remove cc-option test of -fno-stack-protectorMasahiro Yamada2020-07-071-2/+1
| | |_|/ / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some Makefiles already pass -fno-stack-protector unconditionally. For example, arch/arm64/kernel/vdso/Makefile, arch/x86/xen/Makefile. No problem report so far about hard-coding this option. So, we can assume all supported compilers know -fno-stack-protector. GCC 4.8 and Clang support this option (https://godbolt.org/z/_HDGzN) Get rid of cc-option from -fno-stack-protector. Remove CONFIG_CC_HAS_STACKPROTECTOR_NONE, which is always 'y'. Note: arch/mips/vdso/Makefile adds -fno-stack-protector twice, first unconditionally, and second conditionally. I removed the second one. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Kees Cook <keescook@chromium.org> Acked-by: Ard Biesheuvel <ardb@kernel.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
* | | | | Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfsLinus Torvalds2020-08-091-15/+0
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull regset conversion fix from Al Viro: "Fix a regression from an unnoticed bisect hazard in the regset series. A bunch of old (aout, originally) primitives used by coredumps became dead code after fdpic conversion to regsets. Removal of that dead code had been the first commit in the followups to regset series; unfortunately, it happened to hide the bisect hazard on sh (extern for fpregs_get() had not been updated in the main series when it should have been; followup simply made fpregs_get() static). And without that followup commit this bisect hazard became breakage in the mainline" Tested-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> * 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: kill unused dump_fpu() instances
| * | | | | kill unused dump_fpu() instancesAl Viro2020-07-271-15/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | dump_fpu() is used only on the architectures that support elf and have neither CORE_DUMP_USE_REGSET nor ELF_CORE_COPY_FPREGS defined. Currently that's csky, m68k, microblaze, nds32 and unicore32. The rest of the instances are dead code. NB: THIS MUST GO AFTER ELF_FDPIC CONVERSION Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | | | | | Merge tag 'pinctrl-v5.9-1' of ↵Linus Torvalds2020-08-091-1/+1
|\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl Pull pin control updates from Linus Walleij: "This is the bulk of the pin control changes for the v5.9 kernel series: Core changes: - The GPIO patch "gpiolib: Introduce for_each_requested_gpio_in_range() macro" was put in an immutable branch and merged into the pinctrl tree as well. We see these changes also here. - Improved debug output for pins used as GPIO. New drivers: - Ocelot Sparx5 SoC driver. - Intel Emmitsburg SoC subdriver. - Intel Tiger Lake-H SoC subdriver. - Qualcomm PM660 SoC subdriver. - Renesas SH-PFC R8A774E1 subdriver. Driver improvements: - Linear improvement and cleanups of the Intel drivers for Cherryview, Lynxpoint, Baytrail etc. Improved locking among other things. - Renesas SH-PFC has added support for RPC pins, groups, and functions to r8a77970 and r8a77980. - The newere Freescale (now NXP) i.MX8 pin controllers have been modularized. This is driven by the Google Android GKI initiative I think. - Open drain support for pins on the Qualcomm IPQ4019. - The Ingenic driver can handle both edges IRQ detection. - A big slew of documentation fixes all over the place. - A few irqchip template conversions by yours truly. * tag 'pinctrl-v5.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (107 commits) dt-bindings: pinctrl: add bindings for MediaTek MT6779 SoC pinctrl: stmfx: Use irqchip template pinctrl: amd: Use irqchip template pinctrl: mediatek: fix build for tristate changes pinctrl: samsung: Use bank name as irqchip name pinctrl: core: print gpio in pins debugfs file pinctrl: mediatek: add mt6779 eint support pinctrl: mediatek: add pinctrl support for MT6779 SoC pinctrl: mediatek: avoid virtual gpio trying to set reg pinctrl: mediatek: update pinmux definitions for mt6779 pinctrl: stm32: use the hwspin_lock_timeout_in_atomic() API pinctrl: mcp23s08: Use irqchip template pinctrl: sx150x: Use irqchip template dt-bindings: ingenic,pinctrl: Support pinmux/pinconf nodes pinctrl: intel: Add Intel Emmitsburg pin controller support pinctl: ti: iodelay: Replace HTTP links with HTTPS ones Revert "gpio: omap: handle pin config bias flags" pinctrl: single: Use fallthrough pseudo-keyword pinctrl: qcom: spmi-gpio: Use fallthrough pseudo-keyword pinctrl: baytrail: Use fallthrough pseudo-keyword ...
| * | | | | | ARM: dts: am33xx-l4: change #pinctrl-cells from 1 to 2Drew Fustini2020-07-071-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Increase #pinctrl-cells to 2 so that mux and conf be kept separate. This requires the AM33XX_PADCONF macro in omap.h to also be modified to keep pin conf and pin mux values separate. Signed-off-by: Drew Fustini <drew@beagleboard.org> Acked-by: Tony Lindgren <tony@atomide.com> Acked-by: Haojian Zhuang <haojian.zhuang@linaro.org> Link: https://lore.kernel.org/r/20200701013320.130441-3-drew@beagleboard.org Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| * | | | | | ARM/orion/gpio: Make use of for_each_requested_gpio()Andy Shevchenko2020-06-201-6/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make use of for_each_requested_gpio() instead of home grown analogue. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Andrew Lunn <andrew@lunn.ch> Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Cc: Gregory Clement <gregory.clement@bootlin.com> Link: https://lore.kernel.org/r/20200615150545.87964-3-andriy.shevchenko@linux.intel.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* | | | | | | Merge tag 'media/v5.9-1' of ↵Linus Torvalds2020-08-0712-400/+0
|\ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull media updates from Mauro Carvalho Chehab: - Legacy soc_camera driver was removed from staging - New I2C sensor related drivers: dw9768, ch7322, max9271, rdacm20 - TI vpe driver code was re-organized and had new features added - Added Xilinx MIPI CSI-2 Rx Subsystem driver - Added support for Infrared Toy and IR Droid devices - Lots of random driver fixes, new features and cleanups * tag 'media/v5.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (318 commits) media: camss: fix memory leaks on error handling paths in probe media: davinci: vpif_capture: fix potential double free media: radio: remove redundant assignment to variable retval media: allegro: fix potential null dereference on header media: mtk-mdp: Fix a refcounting bug on error in init media: allegro: fix an error pointer vs NULL check media: meye: fix missing pm_mchip_mode field media: cafe-driver: use generic power management media: saa7164: use generic power management media: v4l2-dev/ioctl: Fix document for VIDIOC_QUERYCAP media: v4l2: Correct kernel-doc inconsistency media: v4l2: Correct kernel-doc inconsistency media: dvbdev.h: keep * together with the type media: v4l2-subdev.h: keep * together with the type media: videobuf2: Print videobuf2 buffer state by name media: colorspaces-details.rst: fix V4L2_COLORSPACE_JPEG description media: tw68: use generic power management media: meye: use generic power management media: cx88: use generic power management media: cx25821: use generic power management ...
| * | | | | | | media: arch/arm/configs: remove obsolete CONFIG_SOC_CAMERA*Hans Verkuil2020-07-046-11/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Drop all configs with the CONFIG_SOC_CAMERA prefix since those have been removed. Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-09 00:42:55 +0000