Kernel - My Linux kernel repository

Age	Commit message (Collapse)	Author
2008-12-03	ftrace: print real return in dumpstack for function graph	Steven Rostedt
	Impact: better dumpstack output I noticed in my crash dumps and even in the stack tracer that a lot of functions listed in the stack trace are simply return_to_handler which is ftrace graphs way to insert its own call into the return of a function. But we lose out where the actually function was called from. This patch adds in hooks to the dumpstack mechanism that detects this and finds the real function to print. Both are printed to let the user know that a hook is still in place. This does give a funny side effect in the stack tracer output: Depth Size Location (80 entries) ----- ---- -------- 0) 4144 48 save_stack_trace+0x2f/0x4d 1) 4096 128 ftrace_call+0x5/0x2b 2) 3968 16 mempool_alloc_slab+0x16/0x18 3) 3952 384 return_to_handler+0x0/0x73 4) 3568 -240 stack_trace_call+0x11d/0x209 5) 3808 144 return_to_handler+0x0/0x73 6) 3664 -128 mempool_alloc+0x4d/0xfe 7) 3792 128 return_to_handler+0x0/0x73 8) 3664 -32 scsi_sg_alloc+0x48/0x4a [scsi_mod] As you can see, the real functions are now negative. This is due to them not being found inside the stack. Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-27	x86: unify appropriate bits from dumpstack_32 and dumpstack_64	Neil Horman
	Impact: cleanup As promised, now that dumpstack_32 and dumpstack_64 have so many bits in common, we should merge the in-sync bits into a common file, to prevent them from diverging again. This patch removes bits which are common between dumpstack_32.c and dumpstack_64.c and places them in a common dumpstack.c which is built for both 32 and 64 bit arches. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Acked-by: Alexander van Heukelum <heukelum@fastmail.fm> Signed-off-by: Ingo Molnar <mingo@elte.hu> Makefile \| 2 arch/x86/kernel/Makefile \| 2 arch/x86/kernel/Makefile \| 2 arch/x86/kernel/Makefile \| 2 arch/x86/kernel/Makefile \| 2 arch/x86/kernel/Makefile \| 2 arch/x86/kernel/dumpstack.c \| 319 +++++++++++++++++++++++++++++++++++++++++ arch/x86/kernel/dumpstack.h \| 39 +++++ arch/x86/kernel/dumpstack_32.c \| 294 ------------------------------------- arch/x86/kernel/dumpstack_64.c \| 285 ------------------------------------ 5 files changed, 363 insertions(+), 576 deletions(-)