msm: rtb: Add RTB trace support
Add rtb trace support to support more architectures.
Change-Id: Ic8d42f579f4654db3a4008785fdd7402593a0466
Signed-off-by: Xiaogang Cui <xiaogang@codeaurora.org>
Signed-off-by: Vignesh Radhakrishnan <vigneshr@codeaurora.org>
diff --git a/arch/arm/mach-msm/msm_rtb.c b/arch/arm/mach-msm/msm_rtb.c
index 28b2195..f630d2b 100644
--- a/arch/arm/mach-msm/msm_rtb.c
+++ b/arch/arm/mach-msm/msm_rtb.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2013, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2013-2014, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
@@ -23,7 +23,7 @@
#include <linux/string.h>
#include <linux/atomic.h>
#include <linux/of.h>
-#include <asm/io.h>
+#include <linux/io.h>
#include <asm-generic/sizes.h>
#include <mach/memory.h>
#include <mach/msm_rtb.h>
@@ -36,20 +36,20 @@
#define RTB_COMPAT_STR "qcom,msm-rtb"
/* Write
- * 1) 3 bytes sentinel
+ * 1) 11 bytes sentinel
* 2) 1 bytes of log type
- * 3) 4 bytes of where the caller came from
+ * 3) 8 bytes of where the caller came from
* 4) 4 bytes index
- * 4) 4 bytes extra data from the caller
+ * 4) 8 bytes extra data from the caller
*
- * Total = 16 bytes.
+ * Total = 32 bytes.
*/
struct msm_rtb_layout {
- unsigned char sentinel[3];
+ unsigned char sentinel[11];
unsigned char log_type;
- void *caller;
- unsigned long idx;
- void *data;
+ uint32_t idx;
+ uint64_t caller;
+ uint64_t data;
} __attribute__ ((__packed__));
@@ -70,7 +70,7 @@
static atomic_t msm_rtb_idx;
#endif
-struct msm_rtb_state msm_rtb = {
+static struct msm_rtb_state msm_rtb = {
.filter = 1 << LOGK_LOGBUF,
.enabled = 1,
};
@@ -109,24 +109,24 @@
start->log_type = (char)log_type;
}
-static void msm_rtb_write_caller(void *caller, struct msm_rtb_layout *start)
+static void msm_rtb_write_caller(uint64_t caller, struct msm_rtb_layout *start)
{
start->caller = caller;
}
-static void msm_rtb_write_idx(unsigned long idx,
+static void msm_rtb_write_idx(uint32_t idx,
struct msm_rtb_layout *start)
{
start->idx = idx;
}
-static void msm_rtb_write_data(void *data, struct msm_rtb_layout *start)
+static void msm_rtb_write_data(uint64_t data, struct msm_rtb_layout *start)
{
start->data = data;
}
-static void uncached_logk_pc_idx(enum logk_event_type log_type, void *caller,
- void *data, int idx)
+static void uncached_logk_pc_idx(enum logk_event_type log_type, uint64_t caller,
+ uint64_t data, int idx)
{
struct msm_rtb_layout *start;
@@ -145,13 +145,10 @@
static void uncached_logk_timestamp(int idx)
{
unsigned long long timestamp;
- void *timestamp_upper, *timestamp_lower;
timestamp = sched_clock();
- timestamp_lower = (void *)lower_32_bits(timestamp);
- timestamp_upper = (void *)upper_32_bits(timestamp);
-
- uncached_logk_pc_idx(LOGK_TIMESTAMP|LOGTYPE_NOPC, timestamp_lower,
- timestamp_upper, idx);
+ uncached_logk_pc_idx(LOGK_TIMESTAMP|LOGTYPE_NOPC,
+ (uint64_t)lower_32_bits(timestamp),
+ (uint64_t)upper_32_bits(timestamp), idx);
}
#if defined(CONFIG_MSM_RTB_SEPARATE_CPUS)
@@ -213,7 +210,8 @@
i = msm_rtb_get_idx();
- uncached_logk_pc_idx(log_type, caller, data, i);
+ uncached_logk_pc_idx(log_type, (uint64_t)((unsigned long) caller),
+ (uint64_t)((unsigned long) data), i);
return 1;
}
@@ -225,7 +223,7 @@
}
EXPORT_SYMBOL(uncached_logk);
-int msm_rtb_probe(struct platform_device *pdev)
+static int msm_rtb_probe(struct platform_device *pdev)
{
struct msm_rtb_platform_data *d = pdev->dev.platform_data;
#if defined(CONFIG_MSM_RTB_SEPARATE_CPUS)
@@ -297,7 +295,6 @@
{.compatible = RTB_COMPAT_STR},
{},
};
-EXPORT_COMPAT(RTB_COMPAT_STR);
static struct platform_driver msm_rtb_driver = {
.driver = {