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Commit 83276875 authored by Shreyas K K's avatar Shreyas K K
Browse files

drivers: qcom: boot_marker: Add support to update boot marker 



In cases of system suspend, there is a requirement to update
existing boot marker. Add API to update existing boot marker.

Change-Id: If26249578f4a2594f37f53f3ea819e5032db2b85
Signed-off-by: default avatarShreyas K K <shrekk@codeaurora.org>
parent 8136c468

drivers/soc/qcom/boot_marker.c

+45 −13
Original line number Diff line number Diff line
@@ -44,12 +44,14 @@ struct boot_marker { 
static struct dentry *dent_bkpi, *dent_bkpi_status, *dent_mpm_timer;

static struct boot_marker boot_marker_list;



static void _destroy_boot_marker(const char *name)

/*

 * Caller is expected to hold the list spinlock.

 */

static void delete_boot_marker(const char *name)

{

	struct boot_marker *marker;

	struct boot_marker *temp_addr;



	spin_lock(&boot_marker_list.slock);

	list_for_each_entry_safe(marker, temp_addr, &boot_marker_list.list,

			list) {

		if (strnstr(marker->marker_name, name,
@@ -58,9 +60,11 @@ static void _destroy_boot_marker(const char *name) 
			kfree(marker);

		}

	}

	spin_unlock(&boot_marker_list.slock);

}



/*

 * Caller is expected to hold the list spinlock.

 */

static void _create_boot_marker(const char *name,

		unsigned long long int timer_value)

{
@@ -79,13 +83,39 @@ static void _create_boot_marker(const char *name, 
			sizeof(new_boot_marker->marker_name));

	new_boot_marker->timer_value = timer_value;



	spin_lock(&boot_marker_list.slock);

	list_add_tail(&(new_boot_marker->list), &(boot_marker_list.list));

}



/*

 * Update existing boot marker. Delete existing boot marker and add it

 * to the tail of boot marker list (to keep timestamp in order). Used to

 * avoid duplicate boot markers.

 */

void update_marker(const char *name)

{

	struct boot_marker *marker;

	struct boot_marker *temp_addr;



	unsigned long long timer_value = msm_timer_get_sclk_ticks();



	spin_lock(&boot_marker_list.slock);

	list_for_each_entry_safe(marker, temp_addr, &boot_marker_list.list,

				list) {

		if (strnstr(marker->marker_name, name,

				strlen(marker->marker_name))) {

			delete_boot_marker(marker->marker_name);

			break;

		}

	}



	_create_boot_marker(name, timer_value);

	spin_unlock(&boot_marker_list.slock);

}

EXPORT_SYMBOL(update_marker);



static void set_bootloader_stats(bool hibernation_restore)

{

	spin_lock(&boot_marker_list.slock);

	_create_boot_marker("M - APPSBL Start - ",

		readl_relaxed(&boot_stats->bootloader_start));

	if (!hibernation_restore) {
@@ -107,6 +137,7 @@ static void set_bootloader_stats(bool hibernation_restore) 
	}

	_create_boot_marker("M - APPSBL End - ",

		readl_relaxed(&boot_stats->bootloader_end));

	spin_unlock(&boot_marker_list.slock);

}



static void boot_marker_cleanup(void)
@@ -132,16 +163,12 @@ void place_marker(const char *name) 
		set_bootloader_stats(true);

	}

#endif /* CONFIG_HIBERNATION */

	spin_lock(&boot_marker_list.slock);

	_create_boot_marker((char *)name, msm_timer_get_sclk_ticks());

	spin_unlock(&boot_marker_list.slock);

}

EXPORT_SYMBOL(place_marker);



void destroy_marker(const char *name)

{

	_destroy_boot_marker((char *) name);

}

EXPORT_SYMBOL(destroy_marker);



static inline u64 get_time_in_msec(u64 counter)

{

	counter *= MSEC_PER_SEC;
@@ -163,10 +190,15 @@ void measure_wake_up_time(void) 
			current_time, deep_sleep_exit_time, wake_up_time);

		snprintf(wakeup_marker, sizeof(wakeup_marker),

				"M - STR Wakeup : %llu ms", wake_up_time);

		destroy_marker("M - STR Wakeup");

		spin_lock(&boot_marker_list.slock);

		delete_boot_marker("M - STR Wakeup");

		spin_unlock(&boot_marker_list.slock);

		place_marker(wakeup_marker);

	} else

		destroy_marker("M - STR Wakeup");

	} else {

		spin_lock(&boot_marker_list.slock);

		delete_boot_marker("M - STR Wakeup");

		spin_unlock(&boot_marker_list.slock);

	}

}

EXPORT_SYMBOL(measure_wake_up_time);

include/soc/qcom/boot_stats.h

+2 −2
Original line number Diff line number Diff line
@@ -41,11 +41,11 @@ static inline phys_addr_t msm_timer_get_pa(void) { return 0; } 
#ifdef CONFIG_MSM_BOOT_TIME_MARKER

static inline int boot_marker_enabled(void) { return 1; }

void place_marker(const char *name);

void destroy_marker(const char *name);

void update_marker(const char *name);

void measure_wake_up_time(void);

#else

static inline void place_marker(char *name) { };

static inline void destroy_marker(const char *name) { };

static inline void update_marker(const char *name) { };

static inline int boot_marker_enabled(void) { return 0; }

static inline void measure_wake_up_time(void) { };

#endif