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author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-03-07 18:37:28 +0100 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-03-07 18:37:28 +0100 |
commit | f26db9649af36b8eb76850108113d4056f494537 (patch) | |
tree | c465767c8112cf5ebc7eb30ba9f19a770906560c /scripts/module-common.lds | |
parent | Linux 4.11-rc1 (diff) | |
parent | ftrace/graph: Add ftrace_graph_max_depth kernel parameter (diff) | |
download | linux-f26db9649af36b8eb76850108113d4056f494537.tar.xz linux-f26db9649af36b8eb76850108113d4056f494537.zip |
Merge tag 'trace-v4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
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()
Diffstat (limited to 'scripts/module-common.lds')
-rw-r--r-- | scripts/module-common.lds | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/scripts/module-common.lds b/scripts/module-common.lds index cf7e52e4781b..9b6e246a45d0 100644 --- a/scripts/module-common.lds +++ b/scripts/module-common.lds @@ -22,4 +22,6 @@ SECTIONS { . = ALIGN(8); .init_array 0 : { *(SORT(.init_array.*)) *(.init_array) } + + __jump_table 0 : ALIGN(8) { KEEP(*(__jump_table)) } } |