--- linux-2.6.28.perfctr26/CREDITS.~1~ 2008-12-25 15:54:13.000000000 +0100 +++ linux-2.6.28.perfctr26/CREDITS 2008-12-25 16:06:06.000000000 +0100 @@ -2739,6 +2739,7 @@ N: Mikael Pettersson E: mikpe@it.uu.se W: http://user.it.uu.se/~mikpe/linux/ D: Miscellaneous fixes +D: Performance-monitoring counters driver N: Reed H. Petty E: rhp@draper.net --- linux-2.6.28.perfctr26/Documentation/ioctl/ioctl-number.txt.~1~ 2008-12-25 15:54:13.000000000 +0100 +++ linux-2.6.28.perfctr26/Documentation/ioctl/ioctl-number.txt 2008-12-25 16:06:06.000000000 +0100 @@ -193,6 +193,8 @@ Code Seq# Include File Comments 0xB1 00-1F PPPoX 0xCB 00-1F CBM serial IEC bus in development: +0xD0 all performance counters see drivers/perfctr/ + 0xDD 00-3F ZFCP device driver see drivers/s390/scsi/ 0xF3 00-3F video/sisfb.h sisfb (in development) --- linux-2.6.28.perfctr26/MAINTAINERS.~1~ 2008-12-25 15:54:13.000000000 +0100 +++ linux-2.6.28.perfctr26/MAINTAINERS 2008-12-25 16:06:06.000000000 +0100 @@ -3355,6 +3355,12 @@ M: balbir@linux.vnet.ibm.com L: linux-kernel@vger.kernel.org S: Maintained +PERFORMANCE-MONITORING COUNTERS DRIVER +P: Mikael Pettersson +M: mikpe@it.uu.se +W: http://user.it.uu.se/~mikpe/linux/perfctr/ +S: Maintained + PERSONALITY HANDLING P: Christoph Hellwig M: hch@infradead.org --- linux-2.6.28.perfctr26/arch/arm/Kconfig.~1~ 2008-12-25 15:54:13.000000000 +0100 +++ linux-2.6.28.perfctr26/arch/arm/Kconfig 2008-12-25 16:06:06.000000000 +0100 @@ -647,6 +647,10 @@ config IWMMXT Enable support for iWMMXt context switching at run time if running on a CPU that supports it. +if CPU_XSCALE +source drivers/perfctr/Kconfig +endif + # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER config XSCALE_PMU bool --- linux-2.6.28.perfctr26/arch/arm/include/asm/processor.h.~1~ 2008-12-25 15:54:13.000000000 +0100 +++ linux-2.6.28.perfctr26/arch/arm/include/asm/processor.h 2008-12-25 16:06:06.000000000 +0100 @@ -50,6 +50,10 @@ struct thread_struct { unsigned long error_code; /* debugging */ struct debug_info debug; + +#ifdef CONFIG_PERFCTR_VIRTUAL + struct vperfctr *perfctr; /* performance counters */ +#endif }; #define INIT_THREAD { } --- linux-2.6.28.perfctr26/arch/arm/include/asm/system.h.~1~ 2008-12-25 15:54:13.000000000 +0100 +++ linux-2.6.28.perfctr26/arch/arm/include/asm/system.h 2008-12-25 16:06:06.000000000 +0100 @@ -211,7 +211,9 @@ extern struct task_struct *__switch_to(s #define switch_to(prev,next,last) \ do { \ + perfctr_suspend_thread(&(prev)->thread); \ last = __switch_to(prev,task_thread_info(prev), task_thread_info(next)); \ + perfctr_resume_thread(&(current)->thread); \ } while (0) #if defined(CONFIG_CPU_SA1100) || defined(CONFIG_CPU_SA110) --- linux-2.6.28.perfctr26/arch/arm/kernel/process.c.~1~ 2008-12-25 15:54:13.000000000 +0100 +++ linux-2.6.28.perfctr26/arch/arm/kernel/process.c 2008-12-25 16:06:06.000000000 +0100 @@ -26,6 +26,7 @@ #include #include #include +#include #include #include #include @@ -272,6 +273,7 @@ void show_regs(struct pt_regs * regs) */ void exit_thread(void) { + perfctr_exit_thread(¤t->thread); } ATOMIC_NOTIFIER_HEAD(thread_notify_head); @@ -317,6 +319,8 @@ copy_thread(int nr, unsigned long clone_ if (clone_flags & CLONE_SETTLS) thread->tp_value = regs->ARM_r3; + perfctr_copy_task(p, regs); + return 0; } --- linux-2.6.28.perfctr26/arch/powerpc/include/asm/processor.h.~1~ 2008-10-11 10:43:49.000000000 +0200 +++ linux-2.6.28.perfctr26/arch/powerpc/include/asm/processor.h 2008-12-25 16:06:06.000000000 +0100 @@ -199,6 +199,9 @@ struct thread_struct { unsigned long spefscr; /* SPE & eFP status */ int used_spe; /* set if process has used spe */ #endif /* CONFIG_SPE */ +#ifdef CONFIG_PERFCTR_VIRTUAL + struct vperfctr *perfctr; /* performance counters */ +#endif }; #define ARCH_MIN_TASKALIGN 16 --- linux-2.6.28.perfctr26/arch/powerpc/kernel/process.c.~1~ 2008-10-11 10:43:50.000000000 +0200 +++ linux-2.6.28.perfctr26/arch/powerpc/kernel/process.c 2008-12-25 16:06:06.000000000 +0100 @@ -30,6 +30,7 @@ #include #include #include +#include #include #include #include @@ -405,8 +406,10 @@ struct task_struct *__switch_to(struct t * window where the kernel stack SLB and the kernel stack are out * of sync. Hard disable here. */ + perfctr_suspend_thread(&prev->thread); hard_irq_disable(); last = _switch(old_thread, new_thread); + perfctr_resume_thread(¤t->thread); local_irq_restore(flags); @@ -544,6 +547,7 @@ void show_regs(struct pt_regs * regs) void exit_thread(void) { discard_lazy_cpu_state(); + perfctr_exit_thread(¤t->thread); } void flush_thread(void) @@ -670,6 +674,8 @@ int copy_thread(int nr, unsigned long cl kregs->nip = (unsigned long)ret_from_fork; #endif + perfctr_copy_task(p, regs); + return 0; } --- linux-2.6.28.perfctr26/arch/powerpc/platforms/Kconfig.cputype.~1~ 2008-12-25 15:54:14.000000000 +0100 +++ linux-2.6.28.perfctr26/arch/powerpc/platforms/Kconfig.cputype 2008-12-25 16:06:06.000000000 +0100 @@ -256,4 +256,8 @@ config NOT_COHERENT_CACHE config CHECK_CACHE_COHERENCY bool +if PPC32 +source "drivers/perfctr/Kconfig" +endif + endmenu --- linux-2.6.28.perfctr26/arch/x86/Kconfig.~1~ 2008-12-25 15:54:14.000000000 +0100 +++ linux-2.6.28.perfctr26/arch/x86/Kconfig 2008-12-25 16:06:06.000000000 +0100 @@ -1293,6 +1293,8 @@ config CC_STACKPROTECTOR_ALL functions that use large-ish on-stack buffers. By enabling this option, GCC will be asked to do this for ALL functions. +source "drivers/perfctr/Kconfig" + source kernel/Kconfig.hz config KEXEC --- linux-2.6.28.perfctr26/arch/x86/include/asm/irq_vectors.h.~1~ 2008-12-25 15:54:14.000000000 +0100 +++ linux-2.6.28.perfctr26/arch/x86/include/asm/irq_vectors.h 2008-12-25 16:06:06.000000000 +0100 @@ -85,9 +85,10 @@ * sources per level' errata. */ #define LOCAL_TIMER_VECTOR 0xef +#define LOCAL_PERFCTR_VECTOR 0xee /* - * First APIC vector available to drivers: (vectors 0x30-0xee) we + * First APIC vector available to drivers: (vectors 0x30-0xed) we * start at 0x31(0x41) to spread out vectors evenly between priority * levels. (0x80 is the syscall vector) */ --- linux-2.6.28.perfctr26/arch/x86/include/asm/processor.h.~1~ 2008-12-25 15:54:14.000000000 +0100 +++ linux-2.6.28.perfctr26/arch/x86/include/asm/processor.h 2008-12-25 16:06:06.000000000 +0100 @@ -429,6 +429,8 @@ struct thread_struct { unsigned long iopl; /* Max allowed port in the bitmap, in bytes: */ unsigned io_bitmap_max; +/* performance counters */ + struct vperfctr *perfctr; /* MSR_IA32_DEBUGCTLMSR value to switch in if TIF_DEBUGCTLMSR is set. */ unsigned long debugctlmsr; #ifdef CONFIG_X86_DS --- linux-2.6.28.perfctr26/arch/x86/include/asm/system.h.~1~ 2008-12-25 15:54:14.000000000 +0100 +++ linux-2.6.28.perfctr26/arch/x86/include/asm/system.h 2008-12-25 16:06:06.000000000 +0100 @@ -37,6 +37,7 @@ do { \ * __switch_to()) \ */ \ unsigned long ebx, ecx, edx, esi, edi; \ + perfctr_suspend_thread(&(prev)->thread); \ \ asm volatile("pushfl\n\t" /* save flags */ \ "pushl %%ebp\n\t" /* save EBP */ \ @@ -87,7 +88,8 @@ do { \ "r12", "r13", "r14", "r15" /* Save restore flags to clear handle leaking NT */ -#define switch_to(prev, next, last) \ +#define switch_to(prev, next, last) do { \ + perfctr_suspend_thread(&(prev)->thread); \ asm volatile(SAVE_CONTEXT \ "movq %%rsp,%P[threadrsp](%[prev])\n\t" /* save RSP */ \ "movq %P[threadrsp](%[next]),%%rsp\n\t" /* restore RSP */ \ @@ -107,7 +109,8 @@ do { \ [tif_fork] "i" (TIF_FORK), \ [thread_info] "i" (offsetof(struct task_struct, stack)), \ [pda_pcurrent] "i" (offsetof(struct x8664_pda, pcurrent)) \ - : "memory", "cc" __EXTRA_CLOBBER) + : "memory", "cc" __EXTRA_CLOBBER); \ +} while (0) #endif #ifdef __KERNEL__ --- linux-2.6.28.perfctr26/arch/x86/kernel/entry_32.S.~1~ 2008-12-25 15:54:14.000000000 +0100 +++ linux-2.6.28.perfctr26/arch/x86/kernel/entry_32.S 2008-12-25 16:06:06.000000000 +0100 @@ -678,6 +678,23 @@ ENDPROC(name) /* The include is where all of the SMP etc. interrupts come from */ #include "entry_arch.h" +#if defined(CONFIG_X86_LOCAL_APIC) && defined(CONFIG_KPERFCTR) +ENTRY(perfctr_interrupt) + RING0_INT_FRAME + pushl $~(LOCAL_PERFCTR_VECTOR) + CFI_ADJUST_CFA_OFFSET 4 + SAVE_ALL + TRACE_IRQS_OFF + pushl %esp + CFI_ADJUST_CFA_OFFSET 4 + call smp_perfctr_interrupt + addl $4, %esp + CFI_ADJUST_CFA_OFFSET -4 + jmp ret_from_intr + CFI_ENDPROC +ENDPROC(perfctr_interrupt) +#endif + KPROBE_ENTRY(page_fault) RING0_EC_FRAME pushl $do_page_fault --- linux-2.6.28.perfctr26/arch/x86/kernel/entry_64.S.~1~ 2008-12-25 15:54:14.000000000 +0100 +++ linux-2.6.28.perfctr26/arch/x86/kernel/entry_64.S 2008-12-25 16:06:06.000000000 +0100 @@ -870,6 +870,12 @@ ENTRY(spurious_interrupt) apicinterrupt SPURIOUS_APIC_VECTOR,smp_spurious_interrupt END(spurious_interrupt) +#if defined(CONFIG_X86_LOCAL_APIC) && defined(CONFIG_KPERFCTR) +ENTRY(perfctr_interrupt) + apicinterrupt LOCAL_PERFCTR_VECTOR,smp_perfctr_interrupt +END(perfctr_interrupt) +#endif + /* * Exception entry points. */ --- linux-2.6.28.perfctr26/arch/x86/kernel/irqinit_32.c.~1~ 2008-12-25 15:54:14.000000000 +0100 +++ linux-2.6.28.perfctr26/arch/x86/kernel/irqinit_32.c 2008-12-25 16:06:06.000000000 +0100 @@ -20,6 +20,7 @@ #include #include #include +#include @@ -175,6 +176,8 @@ void __init native_init_IRQ(void) */ intr_init_hook(); + perfctr_vector_init(); + /* * External FPU? Set up irq13 if so, for * original braindamaged IBM FERR coupling. --- linux-2.6.28.perfctr26/arch/x86/kernel/irqinit_64.c.~1~ 2008-12-25 15:54:14.000000000 +0100 +++ linux-2.6.28.perfctr26/arch/x86/kernel/irqinit_64.c 2008-12-25 16:06:06.000000000 +0100 @@ -21,6 +21,7 @@ #include #include #include +#include #include /* @@ -224,6 +225,8 @@ void __init native_init_IRQ(void) apic_intr_init(); + perfctr_vector_init(); + if (!acpi_ioapic) setup_irq(2, &irq2); } --- linux-2.6.28.perfctr26/arch/x86/kernel/process_32.c.~1~ 2008-12-25 15:54:14.000000000 +0100 +++ linux-2.6.28.perfctr26/arch/x86/kernel/process_32.c 2008-12-25 16:06:06.000000000 +0100 @@ -28,6 +28,7 @@ #include #include #include +#include #include #include #include @@ -250,6 +251,7 @@ void exit_thread(void) tss->x86_tss.io_bitmap_base = INVALID_IO_BITMAP_OFFSET; put_cpu(); } + perfctr_exit_thread(¤t->thread); #ifdef CONFIG_X86_DS /* Free any DS contexts that have not been properly released. */ if (unlikely(current->thread.ds_ctx)) { @@ -315,6 +317,8 @@ int copy_thread(int nr, unsigned long cl savesegment(gs, p->thread.gs); + perfctr_copy_task(p, regs); + tsk = current; if (unlikely(test_tsk_thread_flag(tsk, TIF_IO_BITMAP))) { p->thread.io_bitmap_ptr = kmemdup(tsk->thread.io_bitmap_ptr, @@ -629,6 +633,8 @@ struct task_struct * __switch_to(struct x86_write_percpu(current_task, next_p); + perfctr_resume_thread(next); + return prev_p; } --- linux-2.6.28.perfctr26/arch/x86/kernel/process_64.c.~1~ 2008-12-25 15:54:14.000000000 +0100 +++ linux-2.6.28.perfctr26/arch/x86/kernel/process_64.c 2008-12-25 16:06:06.000000000 +0100 @@ -31,6 +31,7 @@ #include #include #include +#include #include #include #include @@ -235,6 +236,7 @@ void exit_thread(void) t->io_bitmap_max = 0; put_cpu(); } + perfctr_exit_thread(t); #ifdef CONFIG_X86_DS /* Free any DS contexts that have not been properly released. */ if (unlikely(t->ds_ctx)) { @@ -347,6 +349,8 @@ int copy_thread(int nr, unsigned long cl savesegment(es, p->thread.es); savesegment(ds, p->thread.ds); + perfctr_copy_task(p, regs); + if (unlikely(test_tsk_thread_flag(me, TIF_IO_BITMAP))) { p->thread.io_bitmap_ptr = kmalloc(IO_BITMAP_BYTES, GFP_KERNEL); if (!p->thread.io_bitmap_ptr) { @@ -671,6 +675,9 @@ __switch_to(struct task_struct *prev_p, */ if (tsk_used_math(next_p) && next_p->fpu_counter > 5) math_state_restore(); + + perfctr_resume_thread(next); + return prev_p; } --- linux-2.6.28.perfctr26/drivers/Makefile.~1~ 2008-12-25 15:54:14.000000000 +0100 +++ linux-2.6.28.perfctr26/drivers/Makefile 2008-12-25 16:06:06.000000000 +0100 @@ -89,6 +89,7 @@ obj-$(CONFIG_MEMSTICK) += memstick/ obj-$(CONFIG_NEW_LEDS) += leds/ obj-$(CONFIG_INFINIBAND) += infiniband/ obj-$(CONFIG_SGI_SN) += sn/ +obj-$(CONFIG_KPERFCTR) += perfctr/ obj-y += firmware/ obj-$(CONFIG_CRYPTO) += crypto/ obj-$(CONFIG_SUPERH) += sh/ --- linux-2.6.28.perfctr26/fs/exec.c.~1~ 2008-12-25 15:54:16.000000000 +0100 +++ linux-2.6.28.perfctr26/fs/exec.c 2008-12-25 16:06:06.000000000 +0100 @@ -49,6 +49,7 @@ #include #include #include +#include #include #include @@ -999,6 +1000,7 @@ int flush_old_exec(struct linux_binprm * set_task_comm(current, tcomm); current->flags &= ~PF_RANDOMIZE; + perfctr_flush_thread(¤t->thread); flush_thread(); /* Set the new mm task size. We have to do that late because it may --- linux-2.6.28.perfctr26/kernel/exit.c.~1~ 2008-12-25 15:54:17.000000000 +0100 +++ linux-2.6.28.perfctr26/kernel/exit.c 2008-12-25 16:06:06.000000000 +0100 @@ -30,6 +30,7 @@ #include #include #include +#include #include #include #include @@ -198,6 +199,7 @@ repeat: leader->exit_state = EXIT_DEAD; } + perfctr_release_task(p); write_unlock_irq(&tasklist_lock); release_thread(p); call_rcu(&p->rcu, delayed_put_task_struct); --- linux-2.6.28.perfctr26/kernel/sched.c.~1~ 2008-12-25 15:54:17.000000000 +0100 +++ linux-2.6.28.perfctr26/kernel/sched.c 2008-12-25 16:06:06.000000000 +0100 @@ -54,6 +54,7 @@ #include #include #include +#include #include #include #include @@ -5967,6 +5968,8 @@ int set_cpus_allowed_ptr(struct task_str struct rq *rq; int ret = 0; + perfctr_set_cpus_allowed(p, *new_mask); /* XXX: convert to _ptr */ + rq = task_rq_lock(p, &flags); if (!cpus_intersects(*new_mask, cpu_online_map)) { ret = -EINVAL; --- linux-2.6.28.perfctr26/kernel/timer.c.~1~ 2008-12-25 15:54:17.000000000 +0100 +++ linux-2.6.28.perfctr26/kernel/timer.c 2008-12-25 16:06:06.000000000 +0100 @@ -33,6 +33,7 @@ #include #include #include +#include #include #include #include @@ -1044,6 +1045,7 @@ void update_process_times(int user_tick) /* Note: this timer irq context must be accounted for as well. */ account_process_tick(p, user_tick); + perfctr_sample_thread(&p->thread); run_local_timers(); if (rcu_pending(cpu)) rcu_check_callbacks(cpu, user_tick);