f26db9649a
Pull tracing fixes from Steven Rostedt:
"There was some breakage with the changes for jump labels in the 4.11
merge window:
- powerpc broke as jump labels uses the two LSB bits as flags in
initialization.
A check was added to make sure that all jump label entries were 4
bytes aligned, but powerpc didn't work that way for modules. Adding
an alignment in the module linker script appeared to be the best
solution.
- Jump labels also added an anonymous union to access those LSB bits
as a normal long. But because this structure had static
initialization, it broke older compilers that could not statically
initialize anonymous unions without brackets.
- The command line parameter for setting function graph filter broke
the "EMPTY_HASH" descriptor by modifying it instead of creating a
new hash to hold the entries.
- The command line parameter ftrace_graph_max_depth was added to
allow its setting at boot time. It uses existing code and only the
command line hook was added.
This is not really a fix, but as it uses existing code without
affecting anything else, I added it to this release. It was ready
before the merge window closed, but I wanted to let it sit in
linux-next for a couple of days first"
* tag 'trace-v4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
ftrace/graph: Add ftrace_graph_max_depth kernel parameter
tracing: Add #undef to fix compile error
jump_label: Add comment about initialization order for anonymous unions
jump_label: Fix anonymous union initialization
module: set __jump_table alignment to 8
ftrace/graph: Do not modify the EMPTY_HASH for the function_graph filter
tracing: Fix code comment for ftrace_ops_get_func()
28 lines
907 B
Plaintext
28 lines
907 B
Plaintext
/*
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* Common module linker script, always used when linking a module.
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* Archs are free to supply their own linker scripts. ld will
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* combine them automatically.
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*/
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SECTIONS {
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/DISCARD/ : {
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*(.discard)
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*(.discard.*)
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}
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__ksymtab 0 : { *(SORT(___ksymtab+*)) }
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__ksymtab_gpl 0 : { *(SORT(___ksymtab_gpl+*)) }
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__ksymtab_unused 0 : { *(SORT(___ksymtab_unused+*)) }
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__ksymtab_unused_gpl 0 : { *(SORT(___ksymtab_unused_gpl+*)) }
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__ksymtab_gpl_future 0 : { *(SORT(___ksymtab_gpl_future+*)) }
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__kcrctab 0 : { *(SORT(___kcrctab+*)) }
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__kcrctab_gpl 0 : { *(SORT(___kcrctab_gpl+*)) }
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__kcrctab_unused 0 : { *(SORT(___kcrctab_unused+*)) }
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__kcrctab_unused_gpl 0 : { *(SORT(___kcrctab_unused_gpl+*)) }
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__kcrctab_gpl_future 0 : { *(SORT(___kcrctab_gpl_future+*)) }
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. = ALIGN(8);
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.init_array 0 : { *(SORT(.init_array.*)) *(.init_array) }
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__jump_table 0 : ALIGN(8) { KEEP(*(__jump_table)) }
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}
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