Stephane Eranian <[email protected]> writes:
> @@ -557,6 +561,10 @@ static inline void __switch_to_xtra(stru
> */
> memset(tss->io_bitmap, 0xff, prev->io_bitmap_max);
> }
> +
> + if (test_tsk_thread_flag(next_p, TIF_PERFMON_CTXSW)
> + || test_tsk_thread_flag(prev_p, TIF_PERFMON_CTXSW))
> + pfm_ctxsw(prev_p, next_p);
> }
I thought we had agreed earlier to put this into single "all uncommon
bits" check first?
>
> /*
> @@ -661,7 +669,7 @@ __switch_to(struct task_struct *prev_p,
> * Now maybe reload the debug registers and handle I/O bitmaps
> */
> if (unlikely((task_thread_info(next_p)->flags & _TIF_WORK_CTXSW))
> - || test_tsk_thread_flag(prev_p, TIF_IO_BITMAP))
> + || (task_thread_info(prev_p)->flags & _TIF_WORK_CTXSW))
Similar.
> __switch_to_xtra(prev_p, next_p, tss);
>
> /* If the task has used fpu the last 5 timeslices, just do a full
> diff --exclude=.git -urp linux-2.6.22.base/arch/x86_64/kernel/setup64.c linux-2.6.22/arch/x86_64/kernel/setup64.c
> --- linux-2.6.22.base/arch/x86_64/kernel/setup64.c 2007-05-29 03:17:16.000000000 -0700
> +++ linux-2.6.22/arch/x86_64/kernel/setup64.c 2007-05-29 03:24:14.000000000 -0700
> @@ -11,6 +11,7 @@
> #include <linux/bootmem.h>
> #include <linux/bitops.h>
> #include <linux/module.h>
> +#include <linux/perfmon.h>
> #include <asm/bootsetup.h>
> #include <asm/pda.h>
> #include <asm/pgtable.h>
> @@ -283,4 +284,6 @@ void __cpuinit cpu_init (void)
> fpu_init();
>
> raw_local_save_flags(kernel_eflags);
> +
> + pfm_init_percpu();
Just use a cpu notifier instead. No need to add everybody's per cpu init code here.
> }
> diff --exclude=.git -urp linux-2.6.22.base/arch/x86_64/kernel/signal.c linux-2.6.22/arch/x86_64/kernel/signal.c
> --- linux-2.6.22.base/arch/x86_64/kernel/signal.c 2007-05-29 03:17:16.000000000 -0700
> +++ linux-2.6.22/arch/x86_64/kernel/signal.c 2007-05-29 03:24:14.000000000 -0700
> @@ -21,6 +21,7 @@
> #include <linux/stddef.h>
> #include <linux/personality.h>
> #include <linux/compiler.h>
> +#include <linux/perfmon.h>
> #include <asm/ucontext.h>
> #include <asm/uaccess.h>
> #include <asm/i387.h>
> @@ -472,6 +473,10 @@ do_notify_resume(struct pt_regs *regs, v
> clear_thread_flag(TIF_SINGLESTEP);
> }
>
> + /* process perfmon asynchronous work (e.g. block thread or reset) */
> + if (thread_info_flags & _TIF_PERFMON_WORK)
> + pfm_handle_work(regs);
> +
> /* deal with pending signal delivery */
> if (thread_info_flags & (_TIF_SIGPENDING|_TIF_RESTORE_SIGMASK))
> do_signal(regs);
> diff --exclude=.git -urp linux-2.6.22.base/arch/x86_64/kernel/smpboot.c linux-2.6.22/arch/x86_64/kernel/smpboot.c
> --- linux-2.6.22.base/arch/x86_64/kernel/smpboot.c 2007-05-29 03:17:16.000000000 -0700
> +++ linux-2.6.22/arch/x86_64/kernel/smpboot.c 2007-05-29 03:24:14.000000000 -0700
> @@ -49,6 +49,7 @@
> #include <linux/mc146818rtc.h>
> #include <linux/smp.h>
> #include <linux/kdebug.h>
> +#include <linux/perfmon.h>
>
> #include <asm/mtrr.h>
> #include <asm/pgalloc.h>
> @@ -1043,6 +1044,7 @@ int __cpu_disable(void)
> spin_unlock(&vector_lock);
> remove_cpu_from_maps();
> fixup_irqs(cpu_online_map);
> + pfm_cpu_disable();
Also cpu notifier.
No compat syscalls?
-Andi
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
