mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-24 03:52:24 +02:00
c5552ad039
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@21952 3c298f89-4303-0410-b956-a3cf2f4a3e73
111 lines
3.0 KiB
C
111 lines
3.0 KiB
C
#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <linux/time.h>
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#include "dbg-trace.h"
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#define TRACE_ARR_LEN 800
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#define STR_LEN 128
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struct trace {
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struct timeval tv;
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char str[STR_LEN];
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unsigned int callback_val1;
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unsigned int callback_val2;
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char valid;
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};
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static unsigned int (*trc_callback1) (unsigned char) = NULL;
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static unsigned int (*trc_callback2) (unsigned char) = NULL;
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static unsigned char trc_param1 = 0;
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static unsigned char trc_param2 = 0;
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struct trace *trc_arr;
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static int trc_index;
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static int trc_active = 0;
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void TRC_START()
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{
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trc_active = 1;
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}
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void TRC_STOP()
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{
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trc_active = 0;
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}
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void TRC_INIT(void *callback1, void *callback2, unsigned char callback1_param, unsigned char callback2_param)
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{
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printk("Marvell debug tracing is on\n");
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trc_arr = (struct trace *)kmalloc(TRACE_ARR_LEN*sizeof(struct trace),GFP_KERNEL);
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if(trc_arr == NULL)
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{
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printk("Can't allocate Debug Trace buffer\n");
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return;
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}
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memset(trc_arr,0,TRACE_ARR_LEN*sizeof(struct trace));
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trc_index = 0;
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trc_callback1 = callback1;
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trc_callback2 = callback2;
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trc_param1 = callback1_param;
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trc_param2 = callback2_param;
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}
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void TRC_REC(char *fmt,...)
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{
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va_list args;
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struct trace *trc = &trc_arr[trc_index];
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if(trc_active == 0)
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return;
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do_gettimeofday(&trc->tv);
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if(trc_callback1)
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trc->callback_val1 = trc_callback1(trc_param1);
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if(trc_callback2)
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trc->callback_val2 = trc_callback2(trc_param2);
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va_start(args, fmt);
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vsprintf(trc->str,fmt,args);
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va_end(args);
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trc->valid = 1;
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if((++trc_index) == TRACE_ARR_LEN) {
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trc_index = 0;
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}
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}
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void TRC_OUTPUT(void)
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{
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int i,j;
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struct trace *p;
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printk("\n\nTrace %d items\n",TRACE_ARR_LEN);
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for(i=0,j=trc_index; i<TRACE_ARR_LEN; i++,j++) {
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if(j == TRACE_ARR_LEN)
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j = 0;
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p = &trc_arr[j];
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if(p->valid) {
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unsigned long uoffs;
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struct trace *plast;
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if(p == &trc_arr[0])
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plast = &trc_arr[TRACE_ARR_LEN-1];
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else
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plast = p-1;
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if(p->tv.tv_sec == ((plast)->tv.tv_sec))
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uoffs = (p->tv.tv_usec - ((plast)->tv.tv_usec));
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else
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uoffs = (1000000 - ((plast)->tv.tv_usec)) +
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((p->tv.tv_sec - ((plast)->tv.tv_sec) - 1) * 1000000) +
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p->tv.tv_usec;
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printk("%03d: [+%ld usec]", j, (unsigned long)uoffs);
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if(trc_callback1)
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printk("[%u]",p->callback_val1);
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if(trc_callback2)
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printk("[%u]",p->callback_val2);
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printk(": %s",p->str);
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}
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p->valid = 0;
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}
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memset(trc_arr,0,TRACE_ARR_LEN*sizeof(struct trace));
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trc_index = 0;
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}
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void TRC_RELEASE(void)
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{
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kfree(trc_arr);
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trc_index = 0;
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}
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