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Commit a32ec9d8 authored by Neil Leeder's avatar Neil Leeder Committed by Gerrit - the friendly Code Review server
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Perf: make debug dir handle exportable 



The perf debug directory is exported so that other
drivers can place nodes there.

Change-Id: I255ff9435a40fbd0f9202ec99b380bd81207d492
Signed-off-by: default avatarNeil Leeder <nleeder@codeaurora.org>
parent dbd2b72e

arch/arm/kernel/perf_event_cpu.c

+11 −4
Original line number Diff line number Diff line
@@ -589,6 +589,15 @@ err_cpu_pm: 
	return err;

}



static struct dentry *perf_debug_dir;



struct dentry *perf_create_debug_dir(void)

{

	if (!perf_debug_dir)

		perf_debug_dir = debugfs_create_dir("msm_perf", NULL);

	return perf_debug_dir;

}



#ifdef CONFIG_PERF_EVENTS_RESET_PMU_DEBUGFS

static void reset_pmu_force(void)

{
@@ -623,15 +632,13 @@ int __init init_pmu_actions(void) 
	struct dentry *file;

	unsigned int value = 1;



	dir = debugfs_create_dir("msm_perf", NULL);

	dir = perf_create_debug_dir();

	if (!dir)

		return -ENOMEM;

	file = debugfs_create_file("resetpmu", 0220, dir,

		&value, &fops_pmuaction);

	if (!file) {

		debugfs_remove(dir);

	if (!file)

		return -ENOMEM;

	}

	return 0;

}

#else

arch/arm/mach-msm/perf_debug.c

+1 −0
Original line number Diff line number Diff line
@@ -53,6 +53,7 @@ static char *descriptions = 
	"28 ARM: dts: msm: add perf-events support for msm8909\n"

	"29 msm: perf: Refine disable/enable in tracecounters\n"

	"30 Perf: reset pmu enables when starting perf\n"

	"31 Perf: make debug dir handle exportable\n"

;



static ssize_t desc_read(struct file *fp, char __user *buf,