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| author | Robin Getz <robin.getz@analog.com> | 2010-03-12 21:17:44 +0000 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2010-05-21 09:40:19 -0400 |
| commit | d60805ad470aef52465f3dc982212f559d9f661b (patch) | |
| tree | fc84b843f2c0fbbc1eaa09395022b36e151bae7b /arch/blackfin | |
| parent | d28cff4b615c2da274922311cef024d52c839870 (diff) | |
| download | linux-3.10-d60805ad470aef52465f3dc982212f559d9f661b.tar.gz linux-3.10-d60805ad470aef52465f3dc982212f559d9f661b.tar.bz2 linux-3.10-d60805ad470aef52465f3dc982212f559d9f661b.zip | |
Blackfin: print out the faulting insn in the trace output
Print out the faulting instruction so when people send traces as part of
bug reports, we have a better idea of what is going on.
Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'arch/blackfin')
| -rw-r--r-- | arch/blackfin/kernel/trace.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/arch/blackfin/kernel/trace.c b/arch/blackfin/kernel/trace.c index 6e37a8765bc..5aa0d5e4e70 100644 --- a/arch/blackfin/kernel/trace.c +++ b/arch/blackfin/kernel/trace.c @@ -19,6 +19,7 @@ #include <asm/trace.h> #include <asm/fixed_code.h> #include <asm/traps.h> +#include <asm/irq_handler.h> void decode_address(char *buf, unsigned long address) { @@ -260,9 +261,10 @@ static void decode_instruction(unsigned short *address) void dump_bfin_trace_buffer(void) { #ifdef CONFIG_DEBUG_BFIN_HWTRACE_ON - int tflags, i = 0; + int tflags, i = 0, fault = 0; char buf[150]; unsigned short *addr; + unsigned int cpu = raw_smp_processor_id(); #ifdef CONFIG_DEBUG_BFIN_HWTRACE_EXPAND int j, index; #endif @@ -277,8 +279,21 @@ void dump_bfin_trace_buffer(void) if (likely(bfin_read_TBUFSTAT() & TBUFCNT)) { for (; bfin_read_TBUFSTAT() & TBUFCNT; i++) { - decode_address(buf, (unsigned long)bfin_read_TBUF()); + addr = (unsigned short *)bfin_read_TBUF(); + decode_address(buf, (unsigned long)addr); pr_notice("%4i Target : %s\n", i, buf); + /* Normally, the faulting instruction doesn't go into + * the trace buffer, (since it doesn't commit), so + * we print out the fault address here + */ + if (!fault && addr == (unsigned short *)trap && + (cpu_pda[cpu].seqstat & SEQSTAT_EXCAUSE) > VEC_EXCPT15) { + decode_address(buf, cpu_pda[cpu].icplb_fault_addr); + pr_notice(" FAULT : %s ", buf); + decode_instruction((unsigned short *)cpu_pda[cpu].icplb_fault_addr); + pr_cont("\n"); + fault = 1; + } addr = (unsigned short *)bfin_read_TBUF(); decode_address(buf, (unsigned long)addr); pr_notice(" Source : %s ", buf); |