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Commit 15c1c09d authored by Shreyas K K's avatar Shreyas K K
Browse files

soc: qcom: Increase bootmarker read buffer 



There are more users to bootmarker now. Increase bootmarker
read buffer to accommodate for all. Add checks to catch buffer
overflow.

Change-Id: Icc7db4c041d72008b5090685da0db0da7a155efb
Signed-off-by: default avatarShreyas K K <shrekk@codeaurora.org>
parent 821a4366

drivers/soc/qcom/boot_marker.c

+4 −2
Original line number Diff line number Diff line
@@ -32,6 +32,7 @@ 
#define MAX_STRING_LEN 256

#define BOOT_MARKER_MAX_LEN 50

#define MSM_ARCH_TIMER_FREQ     19200000

#define BOOTKPI_BUF_SIZE (2 * PAGE_SIZE)



struct boot_marker {

	char marker_name[BOOT_MARKER_MAX_LEN];
@@ -175,13 +176,14 @@ static ssize_t bootkpi_reader(struct file *fp, char __user *user_buffer, 
	int temp = 0;

	struct boot_marker *marker;



	buf = kmalloc(PAGE_SIZE, GFP_KERNEL);

	buf = kmalloc(BOOTKPI_BUF_SIZE, GFP_KERNEL);

	if (!buf)

		return -ENOMEM;



	spin_lock(&boot_marker_list.slock);

	list_for_each_entry(marker, &boot_marker_list.list, list) {

		temp += scnprintf(buf + temp, PAGE_SIZE - temp,

		WARN_ON((BOOTKPI_BUF_SIZE - temp) <= 0);

		temp += scnprintf(buf + temp, BOOTKPI_BUF_SIZE - temp,

				"%-41s:%llu.%03llu seconds\n",

				marker->marker_name,

				marker->timer_value/TIMER_KHZ,