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author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-05-15 16:05:47 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-05-15 16:05:47 -0700 |
commit | d2d8b146043ae7e250aef1fb312971f6f479d487 (patch) | |
tree | 22db8758a5aa0bc850ba8f83fe57b1f679924d0a /kernel/livepatch | |
parent | 2bbacd1a92788ee334c7e92b765ea16ebab68dfe (diff) | |
parent | 693713cbdb3a4bda5a8a678c31f06560bbb14657 (diff) | |
download | lwn-d2d8b146043ae7e250aef1fb312971f6f479d487.tar.gz lwn-d2d8b146043ae7e250aef1fb312971f6f479d487.zip |
Merge tag 'trace-v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing updates from Steven Rostedt:
"The major changes in this tracing update includes:
- Removal of non-DYNAMIC_FTRACE from 32bit x86
- Removal of mcount support from x86
- Emulating a call from int3 on x86_64, fixes live kernel patching
- Consolidated Tracing Error logs file
Minor updates:
- Removal of klp_check_compiler_support()
- kdb ftrace dumping output changes
- Accessing and creating ftrace instances from inside the kernel
- Clean up of #define if macro
- Introduction of TRACE_EVENT_NOP() to disable trace events based on
config options
And other minor fixes and clean ups"
* tag 'trace-v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (44 commits)
x86: Hide the int3_emulate_call/jmp functions from UML
livepatch: Remove klp_check_compiler_support()
ftrace/x86: Remove mcount support
ftrace/x86_32: Remove support for non DYNAMIC_FTRACE
tracing: Simplify "if" macro code
tracing: Fix documentation about disabling options using trace_options
tracing: Replace kzalloc with kcalloc
tracing: Fix partial reading of trace event's id file
tracing: Allow RCU to run between postponed startup tests
tracing: Fix white space issues in parse_pred() function
tracing: Eliminate const char[] auto variables
ring-buffer: Fix mispelling of Calculate
tracing: probeevent: Fix to make the type of $comm string
tracing: probeevent: Do not accumulate on ret variable
tracing: uprobes: Re-enable $comm support for uprobe events
ftrace/x86_64: Emulate call function while updating in breakpoint handler
x86_64: Allow breakpoints to emulate call instructions
x86_64: Add gap to int3 to allow for call emulation
tracing: kdb: Allow ftdump to skip all but the last few entries
tracing: Add trace_total_entries() / trace_total_entries_cpu()
...
Diffstat (limited to 'kernel/livepatch')
-rw-r--r-- | kernel/livepatch/core.c | 8 |
1 files changed, 0 insertions, 8 deletions
diff --git a/kernel/livepatch/core.c b/kernel/livepatch/core.c index f6fbaff10e71..91cd519756d3 100644 --- a/kernel/livepatch/core.c +++ b/kernel/livepatch/core.c @@ -1208,14 +1208,6 @@ void klp_module_going(struct module *mod) static int __init klp_init(void) { - int ret; - - ret = klp_check_compiler_support(); - if (ret) { - pr_info("Your compiler is too old; turning off.\n"); - return -EINVAL; - } - klp_root_kobj = kobject_create_and_add("livepatch", kernel_kobj); if (!klp_root_kobj) return -ENOMEM; |