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Message-Id: <1347671130-22095-4-git-send-email-john.stultz@linaro.org> Date: Fri, 14 Sep 2012 21:05:30 -0400 From: John Stultz <john.stultz@...aro.org> To: linux-kernel@...r.kernel.org Cc: John Stultz <john.stultz@...aro.org>, Catalin Marinas <catalin.marinas@....com>, Arnd Bergmann <arnd@...db.de>, Richard Cochran <richardcochran@...il.com>, Prarit Bhargava <prarit@...hat.com>, Thomas Gleixner <tglx@...utronix.de> Subject: [PATCH 3/3] jiffies: Add register_refined_jiffies() call to every arch This isn't really something I want to submit, but shows what is required to retain the refined jiffies clock calculation. Instead of submitting this, which adds code that really doesn't matter in most cases, I instead propose to not submit this patch, and should anyone notice time quality regressions caused by jiffies clock error, they can add the appropriate changes from this patch. Cc: Catalin Marinas <catalin.marinas@....com> Cc: Arnd Bergmann <arnd@...db.de> Cc: Richard Cochran <richardcochran@...il.com> Cc: Prarit Bhargava <prarit@...hat.com> Cc: Thomas Gleixner <tglx@...utronix.de> Signed-off-by: John Stultz <john.stultz@...aro.org> --- arch/alpha/kernel/setup.c | 3 +++ arch/arm/kernel/setup.c | 2 ++ arch/avr32/kernel/setup.c | 2 ++ arch/blackfin/kernel/setup.c | 2 ++ arch/c6x/kernel/setup.c | 2 ++ arch/cris/kernel/setup.c | 2 ++ arch/h8300/kernel/setup.c | 2 ++ arch/hexagon/kernel/setup.c | 2 ++ arch/ia64/kernel/setup.c | 2 ++ arch/m32r/kernel/setup.c | 2 ++ arch/m68k/kernel/setup_mm.c | 2 ++ arch/m68k/kernel/setup_no.c | 2 ++ arch/microblaze/kernel/setup.c | 2 ++ arch/mips/kernel/setup.c | 2 ++ arch/mn10300/kernel/setup.c | 2 ++ arch/openrisc/kernel/setup.c | 2 ++ arch/parisc/kernel/setup.c | 3 ++- arch/powerpc/kernel/setup_32.c | 2 ++ arch/powerpc/kernel/setup_64.c | 2 ++ arch/s390/kernel/setup.c | 2 ++ arch/score/kernel/setup.c | 2 ++ arch/sh/kernel/setup.c | 2 ++ arch/sparc/kernel/setup_32.c | 2 ++ arch/sparc/kernel/setup_64.c | 2 ++ arch/tile/kernel/setup.c | 2 ++ arch/um/kernel/um_arch.c | 2 ++ arch/unicore32/kernel/setup.c | 2 ++ arch/xtensa/kernel/setup.c | 3 ++- 28 files changed, 57 insertions(+), 2 deletions(-) diff --git a/arch/alpha/kernel/setup.c b/arch/alpha/kernel/setup.c index 9e3107cc5..cec1744 100644 --- a/arch/alpha/kernel/setup.c +++ b/arch/alpha/kernel/setup.c @@ -44,6 +44,7 @@ #include <asm/io.h> #include <linux/log2.h> #include <linux/export.h> +#include <linux/jiffies.h> extern struct atomic_notifier_head panic_notifier_list; static int alpha_panic_event(struct notifier_block *, unsigned long, void *); @@ -747,6 +748,8 @@ setup_arch(char **cmdline_p) setup_smp(); #endif paging_init(); + + register_refined_jiffies(CLOCK_TICK_RATE); } static char sys_unknown[] = "Unknown"; diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c index a81dcec..9b4580c 100644 --- a/arch/arm/kernel/setup.c +++ b/arch/arm/kernel/setup.c @@ -31,6 +31,7 @@ #include <linux/bug.h> #include <linux/compiler.h> #include <linux/sort.h> +#include <linux/jiffies.h> #include <asm/unified.h> #include <asm/cp15.h> @@ -998,6 +999,7 @@ void __init setup_arch(char **cmdline_p) if (mdesc->init_early) mdesc->init_early(); + register_refined_jiffies(CLOCK_TICK_RATE); } diff --git a/arch/avr32/kernel/setup.c b/arch/avr32/kernel/setup.c index b4247f4..141ac85 100644 --- a/arch/avr32/kernel/setup.c +++ b/arch/avr32/kernel/setup.c @@ -19,6 +19,7 @@ #include <linux/root_dev.h> #include <linux/cpu.h> #include <linux/kernel.h> +#include <linux/jiffies.h> #include <asm/sections.h> #include <asm/processor.h> @@ -606,4 +607,5 @@ void __init setup_arch (char **cmdline_p) paging_init(); resource_init(); + register_refined_jiffies(CLOCK_TICK_RATE); } diff --git a/arch/blackfin/kernel/setup.c b/arch/blackfin/kernel/setup.c index fb96e60..71a4c1b 100644 --- a/arch/blackfin/kernel/setup.c +++ b/arch/blackfin/kernel/setup.c @@ -13,6 +13,7 @@ #include <linux/module.h> #include <linux/tty.h> #include <linux/pfn.h> +#include <linux/jiffies.h> #ifdef CONFIG_MTD_UCLINUX #include <linux/mtd/map.h> @@ -1101,6 +1102,7 @@ void __init setup_arch(char **cmdline_p) #endif init_exception_vectors(); bfin_cache_init(); /* Initialize caches for the boot CPU */ + register_refined_jiffies(CLOCK_TICK_RATE); } static int __init topology_init(void) diff --git a/arch/c6x/kernel/setup.c b/arch/c6x/kernel/setup.c index f4e72bd..b95997a 100644 --- a/arch/c6x/kernel/setup.c +++ b/arch/c6x/kernel/setup.c @@ -12,6 +12,7 @@ #include <linux/memblock.h> #include <linux/seq_file.h> #include <linux/bootmem.h> +#include <linux/jiffies.h> #include <linux/clkdev.h> #include <linux/initrd.h> #include <linux/kernel.h> @@ -441,6 +442,7 @@ void __init setup_arch(char **cmdline_p) #if defined(CONFIG_VT) && defined(CONFIG_DUMMY_CONSOLE) conswitchp = &dummy_con; #endif + register_refined_jiffies(CLOCK_TICK_RATE); } #define cpu_to_ptr(n) ((void *)((long)(n)+1)) diff --git a/arch/cris/kernel/setup.c b/arch/cris/kernel/setup.c index 32c3d24..9a18d57 100644 --- a/arch/cris/kernel/setup.c +++ b/arch/cris/kernel/setup.c @@ -19,6 +19,7 @@ #include <linux/utsname.h> #include <linux/pfn.h> #include <linux/cpu.h> +#include <linux/jiffies.h> #include <asm/setup.h> #include <arch/system.h> @@ -163,6 +164,7 @@ void __init setup_arch(char **cmdline_p) /* Setup utsname */ strcpy(init_utsname()->machine, cris_machine_name); + register_refined_jiffies(CLOCK_TICK_RATE); } static void *c_start(struct seq_file *m, loff_t *pos) diff --git a/arch/h8300/kernel/setup.c b/arch/h8300/kernel/setup.c index d0b1607..4da1763 100644 --- a/arch/h8300/kernel/setup.c +++ b/arch/h8300/kernel/setup.c @@ -31,6 +31,7 @@ #include <linux/bootmem.h> #include <linux/seq_file.h> #include <linux/init.h> +#include <linux/jiffies.h> #include <asm/setup.h> #include <asm/irq.h> @@ -187,6 +188,7 @@ void __init setup_arch(char **cmdline_p) *cscr |= (AREABIT(CONFIG_H8300_IDE_BASE) | AREABIT(CONFIG_H8300_IDE_ALT)) | 0x0f; } #endif + register_refined_jiffies(CLOCK_TICK_RATE); #ifdef DEBUG printk(KERN_DEBUG "Done setup_arch\n"); #endif diff --git a/arch/hexagon/kernel/setup.c b/arch/hexagon/kernel/setup.c index 1202f78..d0d5cce 100644 --- a/arch/hexagon/kernel/setup.c +++ b/arch/hexagon/kernel/setup.c @@ -25,6 +25,7 @@ #include <linux/seq_file.h> #include <linux/console.h> #include <linux/of_fdt.h> +#include <linux/jiffies.h> #include <asm/io.h> #include <asm/sections.h> #include <asm/setup.h> @@ -99,6 +100,7 @@ void __init setup_arch(char **cmdline_p) #ifdef CONFIG_SMP smp_start_cpus(); #endif + register_refined_jiffies(CLOCK_TICK_RATE); } /* diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c index aaefd9b..2d6dce2 100644 --- a/arch/ia64/kernel/setup.c +++ b/arch/ia64/kernel/setup.c @@ -45,6 +45,7 @@ #include <linux/cpufreq.h> #include <linux/kexec.h> #include <linux/crash_dump.h> +#include <linux/jiffies.h> #include <asm/machvec.h> #include <asm/mca.h> @@ -626,6 +627,7 @@ setup_arch (char **cmdline_p) check_sal_cache_flush(); #endif paging_init(); + register_refined_jiffies(CLOCK_TICK_RATE); } /* diff --git a/arch/m32r/kernel/setup.c b/arch/m32r/kernel/setup.c index 0392112..f6c5bf3 100644 --- a/arch/m32r/kernel/setup.c +++ b/arch/m32r/kernel/setup.c @@ -25,6 +25,7 @@ #include <linux/cpu.h> #include <linux/nodemask.h> #include <linux/pfn.h> +#include <linux/jiffies.h> #include <asm/processor.h> #include <asm/pgtable.h> @@ -266,6 +267,7 @@ void __init setup_arch(char **cmdline_p) setup_memory(); paging_init(); + register_refined_jiffies(CLOCK_TICK_RATE); } static struct cpu cpu_devices[NR_CPUS]; diff --git a/arch/m68k/kernel/setup_mm.c b/arch/m68k/kernel/setup_mm.c index d872ce4..3521cde 100644 --- a/arch/m68k/kernel/setup_mm.c +++ b/arch/m68k/kernel/setup_mm.c @@ -24,6 +24,7 @@ #include <linux/seq_file.h> #include <linux/module.h> #include <linux/initrd.h> +#include <linux/jiffies.h> #include <asm/bootinfo.h> #include <asm/sections.h> @@ -383,6 +384,7 @@ void __init setup_arch(char **cmdline_p) } #endif #endif + register_refined_jiffies(CLOCK_TICK_RATE); } static int show_cpuinfo(struct seq_file *m, void *v) diff --git a/arch/m68k/kernel/setup_no.c b/arch/m68k/kernel/setup_no.c index 71fb299..055c452 100644 --- a/arch/m68k/kernel/setup_no.c +++ b/arch/m68k/kernel/setup_no.c @@ -32,6 +32,7 @@ #include <linux/initrd.h> #include <linux/root_dev.h> #include <linux/rtc.h> +#include <linux/jiffies.h> #include <asm/setup.h> #include <asm/irq.h> @@ -259,6 +260,7 @@ void __init setup_arch(char **cmdline_p) * Get kmalloc into gear. */ paging_init(); + register_refined_jiffies(CLOCK_TICK_RATE); } /* diff --git a/arch/microblaze/kernel/setup.c b/arch/microblaze/kernel/setup.c index 4da971d..3dbddc7 100644 --- a/arch/microblaze/kernel/setup.c +++ b/arch/microblaze/kernel/setup.c @@ -15,6 +15,7 @@ #include <linux/initrd.h> #include <linux/console.h> #include <linux/debugfs.h> +#include <linux/jiffies.h> #include <asm/setup.h> #include <asm/sections.h> @@ -74,6 +75,7 @@ void __init setup_arch(char **cmdline_p) conswitchp = &dummy_con; #endif #endif + register_refined_jiffies(CLOCK_TICK_RATE); } #ifdef CONFIG_MTD_UCLINUX diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c index a53f8ec..502eb50 100644 --- a/arch/mips/kernel/setup.c +++ b/arch/mips/kernel/setup.c @@ -22,6 +22,7 @@ #include <linux/console.h> #include <linux/pfn.h> #include <linux/debugfs.h> +#include <linux/jiffies.h> #include <asm/addrspace.h> #include <asm/bootinfo.h> @@ -607,6 +608,7 @@ void __init setup_arch(char **cmdline_p) plat_smp_setup(); cpu_cache_init(); + register_refined_jiffies(CLOCK_TICK_RATE); } unsigned long kernelsp[NR_CPUS]; diff --git a/arch/mn10300/kernel/setup.c b/arch/mn10300/kernel/setup.c index 33c3bd1..7e615e0 100644 --- a/arch/mn10300/kernel/setup.c +++ b/arch/mn10300/kernel/setup.c @@ -22,6 +22,7 @@ #include <linux/init.h> #include <linux/bootmem.h> #include <linux/seq_file.h> +#include <linux/jiffies.h> #include <linux/cpu.h> #include <asm/processor.h> #include <linux/console.h> @@ -173,6 +174,7 @@ void __init setup_arch(char **cmdline_p) #endif paging_init(); + register_refined_jiffies(CLOCK_TICK_RATE); } /* diff --git a/arch/openrisc/kernel/setup.c b/arch/openrisc/kernel/setup.c index f4d5bed..1c42ac3 100644 --- a/arch/openrisc/kernel/setup.c +++ b/arch/openrisc/kernel/setup.c @@ -39,6 +39,7 @@ #include <linux/memblock.h> #include <linux/device.h> #include <linux/of_platform.h> +#include <linux/jiffies.h> #include <asm/segment.h> #include <asm/pgtable.h> @@ -318,6 +319,7 @@ void __init setup_arch(char **cmdline_p) *cmdline_p = cmd_line; + register_refined_jiffies(CLOCK_TICK_RATE); printk(KERN_INFO "OpenRISC Linux -- http://openrisc.net\n"); } diff --git a/arch/parisc/kernel/setup.c b/arch/parisc/kernel/setup.c index a3328c2..93af0cf 100644 --- a/arch/parisc/kernel/setup.c +++ b/arch/parisc/kernel/setup.c @@ -36,6 +36,7 @@ #undef PCI_DEBUG #include <linux/proc_fs.h> #include <linux/export.h> +#include <linux/jiffies.h> #include <asm/processor.h> #include <asm/pdc.h> @@ -155,7 +156,7 @@ void __init setup_arch(char **cmdline_p) #if defined(CONFIG_VT) && defined(CONFIG_DUMMY_CONSOLE) conswitchp = &dummy_con; /* we use take_over_console() later ! */ #endif - + register_refined_jiffies(CLOCK_TICK_RATE); } /* diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c index a8f54ec..e9e92c7 100644 --- a/arch/powerpc/kernel/setup_32.c +++ b/arch/powerpc/kernel/setup_32.c @@ -17,6 +17,7 @@ #include <linux/cpu.h> #include <linux/console.h> #include <linux/memblock.h> +#include <linux/jiffies.h> #include <asm/io.h> #include <asm/prom.h> @@ -327,4 +328,5 @@ void __init setup_arch(char **cmdline_p) /* Initialize the MMU context management stuff */ mmu_context_init(); + register_refined_jiffies(CLOCK_TICK_RATE); } diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c index 389bd4f..9d9c3f4 100644 --- a/arch/powerpc/kernel/setup_64.c +++ b/arch/powerpc/kernel/setup_64.c @@ -36,6 +36,7 @@ #include <linux/lockdep.h> #include <linux/memblock.h> #include <linux/hugetlb.h> +#include <linux/jiffies.h> #include <asm/io.h> #include <asm/kdump.h> @@ -599,6 +600,7 @@ void __init setup_arch(char **cmdline_p) kvm_linear_init(); + register_refined_jiffies(CLOCK_TICK_RATE); ppc64_boot_msg(0x15, "Setup Done"); } diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index f86c81e..4f15231 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -45,6 +45,7 @@ #include <linux/crash_dump.h> #include <linux/memory.h> #include <linux/compat.h> +#include <linux/jiffies.h> #include <asm/ipl.h> #include <asm/uaccess.h> @@ -1094,4 +1095,5 @@ void __init setup_arch(char **cmdline_p) /* Setup zfcpdump support */ setup_zfcpdump(console_devno); + register_refined_jiffies(CLOCK_TICK_RATE); } diff --git a/arch/score/kernel/setup.c b/arch/score/kernel/setup.c index b48459a..e68d17b 100644 --- a/arch/score/kernel/setup.c +++ b/arch/score/kernel/setup.c @@ -30,6 +30,7 @@ #include <linux/mm.h> #include <linux/seq_file.h> #include <linux/screen_info.h> +#include <linux/jiffies.h> #include <asm-generic/sections.h> #include <asm/setup.h> @@ -118,6 +119,7 @@ void __init setup_arch(char **cmdline_p) bootmem_init(); paging_init(); resource_init(); + register_refined_jiffies(CLOCK_TICK_RATE); } static int show_cpuinfo(struct seq_file *m, void *v) diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c index ebe7a7d..6ab324d 100644 --- a/arch/sh/kernel/setup.c +++ b/arch/sh/kernel/setup.c @@ -29,6 +29,7 @@ #include <linux/delay.h> #include <linux/platform_device.h> #include <linux/memblock.h> +#include <linux/jiffies.h> #include <asm/uaccess.h> #include <asm/io.h> #include <asm/page.h> @@ -309,6 +310,7 @@ void __init setup_arch(char **cmdline_p) sh_mv.mv_setup(cmdline_p); plat_smp_setup(); + register_refined_jiffies(CLOCK_TICK_RATE); } /* processor boot mode configuration */ diff --git a/arch/sparc/kernel/setup_32.c b/arch/sparc/kernel/setup_32.c index 38bf80a..7f4c87f 100644 --- a/arch/sparc/kernel/setup_32.c +++ b/arch/sparc/kernel/setup_32.c @@ -33,6 +33,7 @@ #include <linux/kdebug.h> #include <linux/export.h> #include <linux/start_kernel.h> +#include <linux/jiffies.h> #include <asm/io.h> #include <asm/processor.h> @@ -379,6 +380,7 @@ void __init setup_arch(char **cmdline_p) paging_init(); smp_setup_cpu_possible_map(); + register_refined_jiffies(CLOCK_TICK_RATE); } extern int stop_a_enabled; diff --git a/arch/sparc/kernel/setup_64.c b/arch/sparc/kernel/setup_64.c index 1414d16..7ec0638 100644 --- a/arch/sparc/kernel/setup_64.c +++ b/arch/sparc/kernel/setup_64.c @@ -30,6 +30,7 @@ #include <linux/cpu.h> #include <linux/initrd.h> #include <linux/module.h> +#include <linux/jiffies.h> #include <asm/io.h> #include <asm/processor.h> @@ -547,6 +548,7 @@ void __init setup_arch(char **cmdline_p) paging_init(); init_sparc64_elf_hwcap(); + register_refined_jiffies(CLOCK_TICK_RATE); } extern int stop_a_enabled; diff --git a/arch/tile/kernel/setup.c b/arch/tile/kernel/setup.c index 6a649a4..f1bc41e 100644 --- a/arch/tile/kernel/setup.c +++ b/arch/tile/kernel/setup.c @@ -31,6 +31,7 @@ #include <linux/timex.h> #include <linux/hugetlb.h> #include <linux/start_kernel.h> +#include <linux/jiffies.h> #include <asm/setup.h> #include <asm/sections.h> #include <asm/cacheflush.h> @@ -1392,6 +1393,7 @@ void __init setup_arch(char **cmdline_p) setup_cpu(1); setup_clock(); load_hv_initrd(); + register_refined_jiffies(CLOCK_TICK_RATE); } diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c index 4db8770..4d988e1 100644 --- a/arch/um/kernel/um_arch.c +++ b/arch/um/kernel/um_arch.c @@ -11,6 +11,7 @@ #include <linux/string.h> #include <linux/utsname.h> #include <linux/sched.h> +#include <linux/jiffies.h> #include <asm/pgtable.h> #include <asm/processor.h> #include <asm/setup.h> @@ -384,6 +385,7 @@ void __init setup_arch(char **cmdline_p) strlcpy(boot_command_line, command_line, COMMAND_LINE_SIZE); *cmdline_p = command_line; setup_hostinfo(host_info, sizeof host_info); + register_refined_jiffies(CLOCK_TICK_RATE); } void __init check_bugs(void) diff --git a/arch/unicore32/kernel/setup.c b/arch/unicore32/kernel/setup.c index 87adbf5..198c647 100644 --- a/arch/unicore32/kernel/setup.c +++ b/arch/unicore32/kernel/setup.c @@ -30,6 +30,7 @@ #include <linux/memblock.h> #include <linux/elf.h> #include <linux/io.h> +#include <linux/jiffies.h> #include <asm/cputype.h> #include <asm/sections.h> @@ -271,6 +272,7 @@ void __init setup_arch(char **cmdline_p) #endif #endif early_trap_init(); + register_refined_jiffies(CLOCK_TICK_RATE); } static struct cpu cpuinfo_unicore; diff --git a/arch/xtensa/kernel/setup.c b/arch/xtensa/kernel/setup.c index 17e746f..1a817ff 100644 --- a/arch/xtensa/kernel/setup.c +++ b/arch/xtensa/kernel/setup.c @@ -21,7 +21,7 @@ #include <linux/screen_info.h> #include <linux/bootmem.h> #include <linux/kernel.h> - +#include <linux/jiffies.h> #if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_DUMMY_CONSOLE) # include <linux/console.h> #endif @@ -304,6 +304,7 @@ void __init setup_arch(char **cmdline_p) #ifdef CONFIG_PCI platform_pcibios_init(); #endif + register_refined_jiffies(CLOCK_TICK_RATE); } void machine_restart(char * cmd) -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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