Messages in this thread Patch in this message | | | From | Nikita Danilov <> | Date | Fri, 14 Feb 2003 20:08:31 +0300 | Subject | [PATCH]: consolidate and cleanup profiling code. |
| |
Hello, Linus,
this patch moves functions from identical per-architecture arch/*/kernel/profile.c into generic kernel/profile.c. Also, identical {x86,parisc,ppc64,sparc64}_profile_hook()'s are all replaced by the single kernel/profile.c:profile_hook(), which is #defined to noop in include/linux/profile.h if CONFIG_PROFILING is not set.
John Levon okked it.
Please apply. Nikita. # This is a BitKeeper generated patch for the following project: # Project Name: Linux kernel tree # This patch format is intended for GNU patch command version 2.5 or higher. # This patch includes the following deltas: # ChangeSet 1.1053 -> 1.1054 # arch/x86_64/kernel/x8664_ksyms.c 1.11 -> 1.12 # arch/i386/kernel/Makefile 1.33 -> 1.34 # arch/sparc64/kernel/Makefile 1.19 -> 1.20 # arch/ppc64/kernel/ppc_ksyms.c 1.21 -> 1.22 # arch/sparc64/kernel/profile.c 1.1 -> (deleted) # arch/parisc/kernel/Makefile 1.9 -> 1.10 # include/asm-parisc/irq.h 1.3 -> 1.4 # arch/parisc/kernel/time.c 1.5 -> 1.6 # arch/parisc/kernel/profile.c 1.1 -> (deleted) # include/linux/profile.h 1.3 -> 1.4 # arch/sparc64/kernel/time.c 1.20 -> 1.21 # arch/ppc64/kernel/profile.c 1.1 -> (deleted) # arch/x86_64/kernel/profile.c 1.2 -> (deleted) # include/asm-sparc64/irq.h 1.11 -> 1.12 # arch/x86_64/kernel/Makefile 1.16 -> 1.17 # arch/sparc64/kernel/sparc64_ksyms.c 1.36 -> 1.37 # arch/i386/kernel/profile.c 1.1 -> (deleted) # arch/ppc64/kernel/time.c 1.16 -> 1.17 # kernel/profile.c 1.3 -> 1.4 # include/asm-x86_64/hw_irq.h 1.4 -> 1.5 # arch/ppc64/kernel/Makefile 1.19 -> 1.20 # include/asm-ppc64/hw_irq.h 1.7 -> 1.8 # include/asm-i386/hw_irq.h 1.19 -> 1.20 # arch/i386/kernel/i386_ksyms.c 1.43 -> 1.44 # arch/parisc/kernel/parisc_ksyms.c 1.7 -> 1.8 # # The following is the BitKeeper ChangeSet Log # -------------------------------------------- # 03/02/14 god@laputa.namesys.com 1.1054 # cleanup and consolidation of the profiling code # -------------------------------------------- # diff -Nru a/arch/i386/kernel/Makefile b/arch/i386/kernel/Makefile --- a/arch/i386/kernel/Makefile Fri Feb 14 20:04:35 2003 +++ b/arch/i386/kernel/Makefile Fri Feb 14 20:04:35 2003 @@ -25,7 +25,6 @@ obj-$(CONFIG_X86_IO_APIC) += io_apic.o obj-$(CONFIG_SOFTWARE_SUSPEND) += suspend.o suspend_asm.o obj-$(CONFIG_X86_NUMAQ) += numaq.o -obj-$(CONFIG_PROFILING) += profile.o obj-$(CONFIG_EDD) += edd.o obj-$(CONFIG_MODULES) += module.o obj-y += sysenter.o diff -Nru a/arch/i386/kernel/i386_ksyms.c b/arch/i386/kernel/i386_ksyms.c --- a/arch/i386/kernel/i386_ksyms.c Fri Feb 14 20:04:35 2003 +++ b/arch/i386/kernel/i386_ksyms.c Fri Feb 14 20:04:35 2003 @@ -182,8 +182,6 @@ EXPORT_SYMBOL(rtc_lock); -EXPORT_SYMBOL_GPL(register_profile_notifier); -EXPORT_SYMBOL_GPL(unregister_profile_notifier); EXPORT_SYMBOL_GPL(set_nmi_callback); EXPORT_SYMBOL_GPL(unset_nmi_callback); diff -Nru a/arch/i386/kernel/profile.c b/arch/i386/kernel/profile.c --- a/arch/i386/kernel/profile.c Fri Feb 14 20:04:35 2003 +++ /dev/null Wed Dec 31 16:00:00 1969 @@ -1,45 +0,0 @@ -/* - * linux/arch/i386/kernel/profile.c - * - * (C) 2002 John Levon <levon@movementarian.org> - * - */ - -#include <linux/profile.h> -#include <linux/spinlock.h> -#include <linux/notifier.h> -#include <linux/irq.h> -#include <asm/hw_irq.h> - -static struct notifier_block * profile_listeners; -static rwlock_t profile_lock = RW_LOCK_UNLOCKED; - -int register_profile_notifier(struct notifier_block * nb) -{ - int err; - write_lock_irq(&profile_lock); - err = notifier_chain_register(&profile_listeners, nb); - write_unlock_irq(&profile_lock); - return err; -} - - -int unregister_profile_notifier(struct notifier_block * nb) -{ - int err; - write_lock_irq(&profile_lock); - err = notifier_chain_unregister(&profile_listeners, nb); - write_unlock_irq(&profile_lock); - return err; -} - - -void x86_profile_hook(struct pt_regs * regs) -{ - /* we would not even need this lock if - * we had a global cli() on register/unregister - */ - read_lock(&profile_lock); - notifier_call_chain(&profile_listeners, 0, regs); - read_unlock(&profile_lock); -} diff -Nru a/arch/parisc/kernel/Makefile b/arch/parisc/kernel/Makefile --- a/arch/parisc/kernel/Makefile Fri Feb 14 20:04:35 2003 +++ b/arch/parisc/kernel/Makefile Fri Feb 14 20:04:35 2003 @@ -16,7 +16,6 @@ processor.o pdc_chassis.o obj-$(CONFIG_SMP) += smp.o -obj-$(CONFIG_PROFILING) += profile.o obj-$(CONFIG_PA11) += pci-dma.o obj-$(CONFIG_PCI) += pci.o obj-$(CONFIG_MODULES) += module.o diff -Nru a/arch/parisc/kernel/parisc_ksyms.c b/arch/parisc/kernel/parisc_ksyms.c --- a/arch/parisc/kernel/parisc_ksyms.c Fri Feb 14 20:04:35 2003 +++ b/arch/parisc/kernel/parisc_ksyms.c Fri Feb 14 20:04:35 2003 @@ -207,10 +207,5 @@ EXPORT_SYMBOL_NOVERS($$dyncall); #endif -#ifdef CONFIG_PROFILING -EXPORT_SYMBOL_GPL(register_profile_notifier); -EXPORT_SYMBOL_GPL(unregister_profile_notifier); -#endif - #include <asm/pgtable.h> EXPORT_SYMBOL_NOVERS(vmalloc_start); diff -Nru a/arch/parisc/kernel/profile.c b/arch/parisc/kernel/profile.c --- a/arch/parisc/kernel/profile.c Fri Feb 14 20:04:35 2003 +++ /dev/null Wed Dec 31 16:00:00 1969 @@ -1,43 +0,0 @@ -/* arch/parisc/kernel/profile.c - * - * Almost entirely copied from ppc64 which is: - * (C) 2002 John Levon <levon@movementarian.org> - */ - -#include <linux/profile.h> -#include <linux/spinlock.h> -#include <linux/notifier.h> -#include <asm/irq.h> - -static struct notifier_block *profile_listeners; -static rwlock_t profile_lock = RW_LOCK_UNLOCKED; - -int register_profile_notifier(struct notifier_block *nb) -{ - int err; - - write_lock_irq(&profile_lock); - err = notifier_chain_register(&profile_listeners, nb); - write_unlock_irq(&profile_lock); - - return err; -} - -int unregister_profile_notifier(struct notifier_block *nb) -{ - int err; - - write_lock_irq(&profile_lock); - err = notifier_chain_unregister(&profile_listeners, nb); - write_unlock_irq(&profile_lock); - - return err; -} - -void parisc_profile_hook(struct pt_regs *regs) -{ - read_lock(&profile_lock); - notifier_call_chain(&profile_listeners, 0, regs); - read_unlock(&profile_lock); -} - diff -Nru a/arch/parisc/kernel/time.c b/arch/parisc/kernel/time.c --- a/arch/parisc/kernel/time.c Fri Feb 14 20:04:35 2003 +++ b/arch/parisc/kernel/time.c Fri Feb 14 20:04:35 2003 @@ -51,11 +51,7 @@ extern unsigned long prof_cpu_mask; extern char _stext; -#ifdef CONFIG_PROFILING - extern void parisc_profile_hook(struct pt_regs *); - - parisc_profile_hook(regs); -#endif + profile_hook(regs); if (user_mode(regs)) return; diff -Nru a/arch/ppc64/kernel/Makefile b/arch/ppc64/kernel/Makefile --- a/arch/ppc64/kernel/Makefile Fri Feb 14 20:04:35 2003 +++ b/arch/ppc64/kernel/Makefile Fri Feb 14 20:04:35 2003 @@ -27,6 +27,5 @@ obj-$(CONFIG_RTAS_FLASH) += rtas_flash.o obj-$(CONFIG_SMP) += smp.o -obj-$(CONFIG_PROFILING) += profile.o obj-$(CONFIG_MODULES) += module.o ppc_ksyms.o obj-$(CONFIG_PPC_RTAS) += rtas-proc.o diff -Nru a/arch/ppc64/kernel/ppc_ksyms.c b/arch/ppc64/kernel/ppc_ksyms.c --- a/arch/ppc64/kernel/ppc_ksyms.c Fri Feb 14 20:04:35 2003 +++ b/arch/ppc64/kernel/ppc_ksyms.c Fri Feb 14 20:04:35 2003 @@ -232,8 +232,3 @@ #endif EXPORT_SYMBOL(tb_ticks_per_usec); - -#ifdef CONFIG_PROFILING -EXPORT_SYMBOL_GPL(register_profile_notifier); -EXPORT_SYMBOL_GPL(unregister_profile_notifier); -#endif diff -Nru a/arch/ppc64/kernel/profile.c b/arch/ppc64/kernel/profile.c --- a/arch/ppc64/kernel/profile.c Fri Feb 14 20:04:35 2003 +++ /dev/null Wed Dec 31 16:00:00 1969 @@ -1,42 +0,0 @@ -/* - * linux/arch/i386/kernel/profile.c - * - * (C) 2002 John Levon <levon@movementarian.org> - * - */ - -#include <linux/profile.h> -#include <linux/spinlock.h> -#include <linux/notifier.h> -#include <linux/irq.h> -#include <asm/hw_irq.h> - -static struct notifier_block * profile_listeners; -static rwlock_t profile_lock = RW_LOCK_UNLOCKED; - -int register_profile_notifier(struct notifier_block * nb) -{ - int err; - write_lock_irq(&profile_lock); - err = notifier_chain_register(&profile_listeners, nb); - write_unlock_irq(&profile_lock); - return err; -} - - -int unregister_profile_notifier(struct notifier_block * nb) -{ - int err; - write_lock_irq(&profile_lock); - err = notifier_chain_unregister(&profile_listeners, nb); - write_unlock_irq(&profile_lock); - return err; -} - - -void ppc64_profile_hook(struct pt_regs * regs) -{ - read_lock(&profile_lock); - notifier_call_chain(&profile_listeners, 0, regs); - read_unlock(&profile_lock); -} diff -Nru a/arch/ppc64/kernel/time.c b/arch/ppc64/kernel/time.c --- a/arch/ppc64/kernel/time.c Fri Feb 14 20:04:35 2003 +++ b/arch/ppc64/kernel/time.c Fri Feb 14 20:04:35 2003 @@ -110,11 +110,8 @@ unsigned long nip; extern unsigned long prof_cpu_mask; extern char _stext; -#ifdef CONFIG_PROFILING - extern void ppc64_profile_hook(struct pt_regs *); - ppc64_profile_hook(regs); -#endif + profile_hook(regs); if (user_mode(regs)) return; diff -Nru a/arch/sparc64/kernel/Makefile b/arch/sparc64/kernel/Makefile --- a/arch/sparc64/kernel/Makefile Fri Feb 14 20:04:35 2003 +++ b/arch/sparc64/kernel/Makefile Fri Feb 14 20:04:35 2003 @@ -15,7 +15,6 @@ obj-$(CONFIG_PCI) += ebus.o isa.o pci_common.o pci_iommu.o \ pci_psycho.o pci_sabre.o pci_schizo.o obj-$(CONFIG_SMP) += smp.o trampoline.o -obj-$(CONFIG_PROFILING) += profile.o obj-$(CONFIG_SPARC32_COMPAT) += sys32.o sys_sparc32.o signal32.o ioctl32.o obj-$(CONFIG_BINFMT_ELF32) += binfmt_elf32.o obj-$(CONFIG_BINFMT_AOUT32) += binfmt_aout32.o diff -Nru a/arch/sparc64/kernel/profile.c b/arch/sparc64/kernel/profile.c --- a/arch/sparc64/kernel/profile.c Fri Feb 14 20:04:35 2003 +++ /dev/null Wed Dec 31 16:00:00 1969 @@ -1,42 +0,0 @@ -/* arch/sparc64/kernel/profile.c - * - * Almost entirely copied from ppc64 which is: - * (C) 2002 John Levon <levon@movementarian.org> - */ - -#include <linux/profile.h> -#include <linux/spinlock.h> -#include <linux/notifier.h> -#include <asm/irq.h> - -static struct notifier_block *profile_listeners; -static rwlock_t profile_lock = RW_LOCK_UNLOCKED; - -int register_profile_notifier(struct notifier_block *nb) -{ - int err; - - write_lock_irq(&profile_lock); - err = notifier_chain_register(&profile_listeners, nb); - write_unlock_irq(&profile_lock); - - return err; -} - -int unregister_profile_notifier(struct notifier_block *nb) -{ - int err; - - write_lock_irq(&profile_lock); - err = notifier_chain_unregister(&profile_listeners, nb); - write_unlock_irq(&profile_lock); - - return err; -} - -void sparc64_profile_hook(struct pt_regs *regs) -{ - read_lock(&profile_lock); - notifier_call_chain(&profile_listeners, 0, regs); - read_unlock(&profile_lock); -} diff -Nru a/arch/sparc64/kernel/sparc64_ksyms.c b/arch/sparc64/kernel/sparc64_ksyms.c --- a/arch/sparc64/kernel/sparc64_ksyms.c Fri Feb 14 20:04:35 2003 +++ b/arch/sparc64/kernel/sparc64_ksyms.c Fri Feb 14 20:04:35 2003 @@ -374,8 +374,3 @@ /* for ns8703 */ EXPORT_SYMBOL(ns87303_lock); - -#ifdef CONFIG_PROFILING -EXPORT_SYMBOL_GPL(register_profile_notifier); -EXPORT_SYMBOL_GPL(unregister_profile_notifier); -#endif diff -Nru a/arch/sparc64/kernel/time.c b/arch/sparc64/kernel/time.c --- a/arch/sparc64/kernel/time.c Fri Feb 14 20:04:35 2003 +++ b/arch/sparc64/kernel/time.c Fri Feb 14 20:04:35 2003 @@ -88,11 +88,8 @@ { unsigned long pc = regs->tpc; unsigned long o7 = regs->u_regs[UREG_RETPC]; -#ifdef CONFIG_PROFILING - extern void sparc64_profile_hook(struct pt_regs *); - sparc64_profile_hook(regs); -#endif + profile_hook(regs); if (user_mode(regs)) return; diff -Nru a/arch/x86_64/kernel/Makefile b/arch/x86_64/kernel/Makefile --- a/arch/x86_64/kernel/Makefile Fri Feb 14 20:04:35 2003 +++ b/arch/x86_64/kernel/Makefile Fri Feb 14 20:04:35 2003 @@ -22,8 +22,6 @@ obj-$(CONFIG_GART_IOMMU) += pci-gart.o aperture.o obj-$(CONFIG_DUMMY_IOMMU) += pci-nommu.o obj-$(CONFIG_MODULES) += module.o -obj-$(CONFIG_PROFILING) += profile.o - $(obj)/bootflag.c: @ln -sf ../../i386/kernel/bootflag.c $(obj)/bootflag.c diff -Nru a/arch/x86_64/kernel/profile.c b/arch/x86_64/kernel/profile.c --- a/arch/x86_64/kernel/profile.c Fri Feb 14 20:04:35 2003 +++ /dev/null Wed Dec 31 16:00:00 1969 @@ -1,45 +0,0 @@ -/* - * linux/arch/x86_64/kernel/profile.c - * - * (C) 2002 John Levon <levon@movementarian.org> - * - */ - -#include <linux/profile.h> -#include <linux/spinlock.h> -#include <linux/notifier.h> -#include <linux/irq.h> -#include <asm/hw_irq.h> - -static struct notifier_block * profile_listeners; -static rwlock_t profile_lock = RW_LOCK_UNLOCKED; - -int register_profile_notifier(struct notifier_block * nb) -{ - int err; - write_lock_irq(&profile_lock); - err = notifier_chain_register(&profile_listeners, nb); - write_unlock_irq(&profile_lock); - return err; -} - - -int unregister_profile_notifier(struct notifier_block * nb) -{ - int err; - write_lock_irq(&profile_lock); - err = notifier_chain_unregister(&profile_listeners, nb); - write_unlock_irq(&profile_lock); - return err; -} - - -void x86_profile_hook(struct pt_regs * regs) -{ - /* we would not even need this lock if - * we had a global cli() on register/unregister - */ - read_lock(&profile_lock); - notifier_call_chain(&profile_listeners, 0, regs); - read_unlock(&profile_lock); -} diff -Nru a/arch/x86_64/kernel/x8664_ksyms.c b/arch/x86_64/kernel/x8664_ksyms.c --- a/arch/x86_64/kernel/x8664_ksyms.c Fri Feb 14 20:04:35 2003 +++ b/arch/x86_64/kernel/x8664_ksyms.c Fri Feb 14 20:04:35 2003 @@ -132,8 +132,6 @@ EXPORT_SYMBOL(rtc_lock); -EXPORT_SYMBOL_GPL(register_profile_notifier); -EXPORT_SYMBOL_GPL(unregister_profile_notifier); EXPORT_SYMBOL_GPL(set_nmi_callback); EXPORT_SYMBOL_GPL(unset_nmi_callback); diff -Nru a/include/asm-i386/hw_irq.h b/include/asm-i386/hw_irq.h --- a/include/asm-i386/hw_irq.h Fri Feb 14 20:04:35 2003 +++ b/include/asm-i386/hw_irq.h Fri Feb 14 20:04:35 2003 @@ -76,11 +76,8 @@ { unsigned long eip; extern unsigned long prof_cpu_mask; -#ifdef CONFIG_PROFILING - extern void x86_profile_hook(struct pt_regs *); - x86_profile_hook(regs); -#endif + profile_hook(regs); if (user_mode(regs)) return; @@ -108,27 +105,6 @@ eip = prof_len-1; atomic_inc((atomic_t *)&prof_buffer[eip]); } - -struct notifier_block; - -#ifdef CONFIG_PROFILING - -int register_profile_notifier(struct notifier_block * nb); -int unregister_profile_notifier(struct notifier_block * nb); - -#else - -static inline int register_profile_notifier(struct notifier_block * nb) -{ - return -ENOSYS; -} - -static inline int unregister_profile_notifier(struct notifier_block * nb) -{ - return -ENOSYS; -} - -#endif /* CONFIG_PROFILING */ #if defined(CONFIG_X86_IO_APIC) && defined(CONFIG_SMP) static inline void hw_resend_irq(struct hw_interrupt_type *h, unsigned int i) diff -Nru a/include/asm-parisc/irq.h b/include/asm-parisc/irq.h --- a/include/asm-parisc/irq.h Fri Feb 14 20:04:35 2003 +++ b/include/asm-parisc/irq.h Fri Feb 14 20:04:35 2003 @@ -95,21 +95,4 @@ /* soft power switch support (power.c) */ extern struct tasklet_struct power_tasklet; -struct notifier_block; - -#ifdef CONFIG_PROFILING -int register_profile_notifier(struct notifier_block *nb); -int unregister_profile_notifier(struct notifier_block *nb); -#else -static inline int register_profile_notifier(struct notifier_block *nb) -{ - return -ENOSYS; -} - -static inline int unregister_profile_notifier(struct notifier_block *nb) -{ - return -ENOSYS; -} -#endif - #endif /* _ASM_PARISC_IRQ_H */ diff -Nru a/include/asm-ppc64/hw_irq.h b/include/asm-ppc64/hw_irq.h --- a/include/asm-ppc64/hw_irq.h Fri Feb 14 20:04:35 2003 +++ b/include/asm-ppc64/hw_irq.h Fri Feb 14 20:04:35 2003 @@ -81,26 +81,5 @@ struct hw_interrupt_type; static inline void hw_resend_irq(struct hw_interrupt_type *h, unsigned int i) {} -struct notifier_block; - -#ifdef CONFIG_PROFILING - -int register_profile_notifier(struct notifier_block * nb); -int unregister_profile_notifier(struct notifier_block * nb); - -#else - -static inline int register_profile_notifier(struct notifier_block * nb) -{ - return -ENOSYS; -} - -static inline int unregister_profile_notifier(struct notifier_block * nb) -{ - return -ENOSYS; -} - -#endif /* CONFIG_PROFILING */ - #endif /* _PPC64_HW_IRQ_H */ #endif /* __KERNEL__ */ diff -Nru a/include/asm-sparc64/irq.h b/include/asm-sparc64/irq.h --- a/include/asm-sparc64/irq.h Fri Feb 14 20:04:35 2003 +++ b/include/asm-sparc64/irq.h Fri Feb 14 20:04:35 2003 @@ -157,25 +157,4 @@ return retval; } -struct notifier_block; - -#ifdef CONFIG_PROFILING - -int register_profile_notifier(struct notifier_block *nb); -int unregister_profile_notifier(struct notifier_block *nb); - -#else - -static inline int register_profile_notifier(struct notifier_block *nb) -{ - return -ENOSYS; -} - -static inline int unregister_profile_notifier(struct notifier_block *nb) -{ - return -ENOSYS; -} - -#endif /* CONFIG_PROFILING */ - #endif diff -Nru a/include/asm-x86_64/hw_irq.h b/include/asm-x86_64/hw_irq.h --- a/include/asm-x86_64/hw_irq.h Fri Feb 14 20:04:35 2003 +++ b/include/asm-x86_64/hw_irq.h Fri Feb 14 20:04:35 2003 @@ -135,11 +135,9 @@ unsigned long rip; extern unsigned long prof_cpu_mask; extern char _stext; -#ifdef CONFIG_PROFILING - extern void x86_profile_hook(struct pt_regs *); - x86_profile_hook(regs); -#endif + profile_hook(regs); + if (user_mode(regs)) return; if (!prof_buffer) @@ -166,26 +164,6 @@ atomic_inc((atomic_t *)&prof_buffer[rip]); } -struct notifier_block; - -#ifdef CONFIG_PROFILING - -int register_profile_notifier(struct notifier_block * nb); -int unregister_profile_notifier(struct notifier_block * nb); - -#else - -static inline int register_profile_notifier(struct notifier_block * nb) -{ - return -ENOSYS; -} - -static inline int unregister_profile_notifier(struct notifier_block * nb) -{ - return -ENOSYS; -} - -#endif /* CONFIG_PROFILING */ #ifdef CONFIG_SMP /*more of this file should probably be ifdefed SMP */ static inline void hw_resend_irq(struct hw_interrupt_type *h, unsigned int i) { if (IO_APIC_IRQ(i)) diff -Nru a/include/linux/profile.h b/include/linux/profile.h --- a/include/linux/profile.h Fri Feb 14 20:04:35 2003 +++ b/include/linux/profile.h Fri Feb 14 20:04:35 2003 @@ -45,6 +45,12 @@ int profile_event_unregister(enum profile_type, struct notifier_block * n); +int register_profile_notifier(struct notifier_block * nb); +int unregister_profile_notifier(struct notifier_block * nb); + +/* profiling hook activated on each timer interrupt */ +void profile_hook(struct pt_regs * regs); + #else static inline int profile_event_register(enum profile_type t, struct notifier_block * n) @@ -60,7 +66,19 @@ #define profile_exit_task(a) do { } while (0) #define profile_exec_unmap(a) do { } while (0) #define profile_exit_mmap(a) do { } while (0) - + +static inline int register_profile_notifier(struct notifier_block * nb) +{ + return -ENOSYS; +} + +static inline int unregister_profile_notifier(struct notifier_block * nb) +{ + return -ENOSYS; +} + +#define profile_hook(regs) do { } while (0) + #endif /* CONFIG_PROFILING */ #endif /* __KERNEL__ */ diff -Nru a/kernel/profile.c b/kernel/profile.c --- a/kernel/profile.c Fri Feb 14 20:04:35 2003 +++ b/kernel/profile.c Fri Feb 14 20:04:35 2003 @@ -119,6 +119,39 @@ return err; } +static struct notifier_block * profile_listeners; +static rwlock_t profile_lock = RW_LOCK_UNLOCKED; + +int register_profile_notifier(struct notifier_block * nb) +{ + int err; + write_lock_irq(&profile_lock); + err = notifier_chain_register(&profile_listeners, nb); + write_unlock_irq(&profile_lock); + return err; +} + + +int unregister_profile_notifier(struct notifier_block * nb) +{ + int err; + write_lock_irq(&profile_lock); + err = notifier_chain_unregister(&profile_listeners, nb); + write_unlock_irq(&profile_lock); + return err; +} + + +void profile_hook(struct pt_regs * regs) +{ + read_lock(&profile_lock); + notifier_call_chain(&profile_listeners, 0, regs); + read_unlock(&profile_lock); +} + +EXPORT_SYMBOL_GPL(register_profile_notifier); +EXPORT_SYMBOL_GPL(unregister_profile_notifier); + #endif /* CONFIG_PROFILING */ EXPORT_SYMBOL_GPL(profile_event_register); - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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