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Commit cc867094 authored by Ingo Molnar's avatar Ingo Molnar
Browse files

Merge branch 'perf/urgent' into perf/core, to pick up fixes 



Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parents 496156e3 9d5dcc93

arch/x86/events/intel/core.c

+1 −1
Original line number Diff line number Diff line
@@ -3134,7 +3134,7 @@ static unsigned long intel_pmu_large_pebs_flags(struct perf_event *event) 
		flags &= ~PERF_SAMPLE_TIME;

	if (!event->attr.exclude_kernel)

		flags &= ~PERF_SAMPLE_REGS_USER;

	if (event->attr.sample_regs_user & ~PEBS_REGS)

	if (event->attr.sample_regs_user & ~PEBS_GP_REGS)

		flags &= ~(PERF_SAMPLE_REGS_USER | PERF_SAMPLE_REGS_INTR);

	return flags;

}

arch/x86/events/perf_event.h

+19 −19
Original line number Diff line number Diff line
@@ -95,25 +95,25 @@ struct amd_nb { 
	PERF_SAMPLE_REGS_INTR | PERF_SAMPLE_REGS_USER | \

	PERF_SAMPLE_PERIOD)



#define PEBS_REGS \

	(PERF_REG_X86_AX | \

	 PERF_REG_X86_BX | \

	 PERF_REG_X86_CX | \

	 PERF_REG_X86_DX | \

	 PERF_REG_X86_DI | \

	 PERF_REG_X86_SI | \

	 PERF_REG_X86_SP | \

	 PERF_REG_X86_BP | \

	 PERF_REG_X86_IP | \

	 PERF_REG_X86_FLAGS | \

	 PERF_REG_X86_R8 | \

	 PERF_REG_X86_R9 | \

	 PERF_REG_X86_R10 | \

	 PERF_REG_X86_R11 | \

	 PERF_REG_X86_R12 | \

	 PERF_REG_X86_R13 | \

	 PERF_REG_X86_R14 | \

	 PERF_REG_X86_R15)

#define PEBS_GP_REGS			\

	((1ULL << PERF_REG_X86_AX)    | \

	 (1ULL << PERF_REG_X86_BX)    | \

	 (1ULL << PERF_REG_X86_CX)    | \

	 (1ULL << PERF_REG_X86_DX)    | \

	 (1ULL << PERF_REG_X86_DI)    | \

	 (1ULL << PERF_REG_X86_SI)    | \

	 (1ULL << PERF_REG_X86_SP)    | \

	 (1ULL << PERF_REG_X86_BP)    | \

	 (1ULL << PERF_REG_X86_IP)    | \

	 (1ULL << PERF_REG_X86_FLAGS) | \

	 (1ULL << PERF_REG_X86_R8)    | \

	 (1ULL << PERF_REG_X86_R9)    | \

	 (1ULL << PERF_REG_X86_R10)   | \

	 (1ULL << PERF_REG_X86_R11)   | \

	 (1ULL << PERF_REG_X86_R12)   | \

	 (1ULL << PERF_REG_X86_R13)   | \

	 (1ULL << PERF_REG_X86_R14)   | \

	 (1ULL << PERF_REG_X86_R15))



/*

 * Per register state.

kernel/events/core.c

+21 −16
Original line number Diff line number Diff line
@@ -9077,26 +9077,29 @@ static void perf_event_addr_filters_apply(struct perf_event *event) 
	if (task == TASK_TOMBSTONE)

		return;



	if (!ifh->nr_file_filters)

		return;



	if (ifh->nr_file_filters) {

		mm = get_task_mm(event->ctx->task);

		if (!mm)

			goto restart;



		down_read(&mm->mmap_sem);

	}



	raw_spin_lock_irqsave(&ifh->lock, flags);

	list_for_each_entry(filter, &ifh->list, entry) {

		if (filter->path.dentry) {

			/*

			 * Adjust base offset if the filter is associated to a

			 * binary that needs to be mapped:

			 */

			event->addr_filter_ranges[count].start = 0;

			event->addr_filter_ranges[count].size = 0;



		/*

		 * Adjust base offset if the filter is associated to a binary

		 * that needs to be mapped:

		 */

		if (filter->path.dentry)

			perf_addr_filter_apply(filter, mm, &event->addr_filter_ranges[count]);

		} else {

			event->addr_filter_ranges[count].start = filter->offset;

			event->addr_filter_ranges[count].size  = filter->size;

		}



		count++;

	}
@@ -9104,9 +9107,11 @@ static void perf_event_addr_filters_apply(struct perf_event *event) 
	event->addr_filters_gen++;

	raw_spin_unlock_irqrestore(&ifh->lock, flags);



	if (ifh->nr_file_filters) {

		up_read(&mm->mmap_sem);



		mmput(mm);

	}



restart:

	perf_event_stop(event, 1);

kernel/events/ring_buffer.c

+15 −18
Original line number Diff line number Diff line
@@ -455,7 +455,6 @@ void perf_aux_output_end(struct perf_output_handle *handle, unsigned long size) 
		rb->aux_head += size;

	}



	if (size || handle->aux_flags) {

	/*

	 * Only send RECORD_AUX if we have something useful to communicate

	 *
@@ -468,11 +467,9 @@ void perf_aux_output_end(struct perf_output_handle *handle, unsigned long size) 
	 * offset. So, from now on we don't output AUX records that

	 * have *only* OVERWRITE flag set.

	 */



		if (handle->aux_flags & ~(u64)PERF_AUX_FLAG_OVERWRITE)

	if (size || (handle->aux_flags & ~(u64)PERF_AUX_FLAG_OVERWRITE))

		perf_event_aux_event(handle->event, aux_head, size,

				     handle->aux_flags);

	}



	rb->user_page->aux_head = rb->aux_head;

	if (rb_need_aux_wakeup(rb))

kernel/kprobes.c

+2 −4
Original line number Diff line number Diff line
@@ -709,7 +709,6 @@ static void unoptimize_kprobe(struct kprobe *p, bool force) 
static int reuse_unused_kprobe(struct kprobe *ap)

{

	struct optimized_kprobe *op;

	int ret;



	/*

	 * Unused kprobe MUST be on the way of delayed unoptimizing (means
@@ -720,9 +719,8 @@ static int reuse_unused_kprobe(struct kprobe *ap) 
	/* Enable the probe again */

	ap->flags &= ~KPROBE_FLAG_DISABLED;

	/* Optimize it again (remove from op->list) */

	ret = kprobe_optready(ap);

	if (ret)

		return ret;

	if (!kprobe_optready(ap))

		return -EINVAL;



	optimize_kprobe(ap);

	return 0;