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8d4a862276
Currently xmon needs to get devtree_lock (through rtas_token()) during its invocation (at crash time). If there is a crash while devtree_lock is being held, then xmon tries to get the lock but spins forever and never get into the interactive debugger, as in the following case: int *ptr = NULL; raw_spin_lock_irqsave(&devtree_lock, flags); *ptr = 0xdeadbeef; This patch avoids calling rtas_token(), thus trying to get the same lock, at crash time. This new mechanism proposes getting the token at initialization time (xmon_init()) and just consuming it at crash time. This would allow xmon to be possible invoked independent of devtree_lock being held or not. Signed-off-by: Breno Leitao <leitao@debian.org> Reviewed-by: Thiago Jung Bauermann <bauerman@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> |
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| .. | ||
| ansidecl.h | ||
| dis-asm.h | ||
| Makefile | ||
| nonstdio.c | ||
| nonstdio.h | ||
| ppc-dis.c | ||
| ppc-opc.c | ||
| ppc.h | ||
| spr_access.S | ||
| spu-dis.c | ||
| spu-insns.h | ||
| spu-opc.c | ||
| spu.h | ||
| xmon.c | ||