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Commit fd7f2d93 authored by Neil Leeder's avatar Neil Leeder Committed by Matt Wagantall
Browse files

Perf: arm64: make debug dir handle exportable 



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

Change-Id: I570f4b61267ce4ef20275852ec769464b7f68827
Signed-off-by: default avatarNeil Leeder <nleeder@codeaurora.org>
parent f17a718c

arch/arm64/kernel/perf_debug.c

+1 −0
Original line number Diff line number Diff line
@@ -34,6 +34,7 @@ static char *descriptions = 
	"12 Perf: arm64: fix disable of pmu irq during hotplug\n"

	"13 Perf: arm64: restore registers after reset\n"

	"14 Perf: arm64: stop counters when going into hotplug\n"

	"15 Perf: arm64: make debug dir handle exportable\n"

;



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

arch/arm64/kernel/perf_event.c

+11 −4
Original line number Diff line number Diff line
@@ -1884,6 +1884,15 @@ unsigned long perf_misc_flags(struct pt_regs *regs) 
	return misc;

}



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 __ref void reset_pmu_force(void)

{
@@ -1929,15 +1938,13 @@ 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