https://github.com/torvalds/linux
Revision 503621628b32782a07b2318e4112bd4372aa3401 authored by Russell King on 23 April 2019, 16:09:38 UTC, committed by Russell King on 23 April 2019, 16:28:32 UTC
Naresh Kamboju recently reported that the function-graph tracer crashes on ARM. The function-graph tracer assumes that the kernel is built with frame pointers. We explicitly disabled the function-graph tracer when building Thumb2, since the Thumb2 ABI doesn't have frame pointers. We recently changed the way the unwinder method was selected, which seems to have made it more likely that we can end up with the function- graph tracer enabled but without the kernel built with frame pointers. Fix up the function graph tracer dependencies so the option is not available when we have no possibility of having frame pointers, and adjust the dependencies on the unwinder option to hide the non-frame pointer unwinder options if the function-graph tracer is enabled. Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org> Tested-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
1 parent 9e98c67
Tip revision: 503621628b32782a07b2318e4112bd4372aa3401 authored by Russell King on 23 April 2019, 16:09:38 UTC
ARM: fix function graph tracer and unwinder dependencies
ARM: fix function graph tracer and unwinder dependencies
Tip revision: 5036216
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| .clang-format | -rw-r--r-- | 13.9 KB |
| .cocciconfig | -rw-r--r-- | 59 bytes |
| .get_maintainer.ignore | -rw-r--r-- | 31 bytes |
| .gitattributes | -rw-r--r-- | 30 bytes |
| .gitignore | -rw-r--r-- | 1.5 KB |
| .mailmap | -rw-r--r-- | 10.8 KB |
| COPYING | -rw-r--r-- | 423 bytes |
| CREDITS | -rw-r--r-- | 96.9 KB |
| Kbuild | -rw-r--r-- | 1.5 KB |
| Kconfig | -rw-r--r-- | 563 bytes |
| MAINTAINERS | -rw-r--r-- | 490.8 KB |
| Makefile | -rw-r--r-- | 58.4 KB |
| README | -rw-r--r-- | 727 bytes |
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