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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-12-13 14:01:11 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-12-13 14:01:11 -0800 |
| commit | 52bb452558a426ba265a19e6eadc66cf95613014 (patch) | |
| tree | fe1fca1336151e14152c2c71dcb2f8bf50d55982 /arch/x86/kernel | |
| parent | a99abce2d92dd21faffc9439fa35d1519627872b (diff) | |
| parent | aee4e5f3d3abb7a2239dd02f6d8fb173413fd02f (diff) | |
Merge tag 'trace-fixes-v3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt:
"Here's two fixes:
1) Discovered by Fengguang Wu's tests. I changed the parameters to
the function graph x86 prepare_ftrace_return call but forgot to
update the call from entry_32 (i386 version). This patch corrects
that.
2) I was tracing some code and found that the sched_switch tracepoint
was showing tasks in the INTERRUPTIBLE state as RUNNING. This was
due to the updates to convert preempt_count into a per_cpu
variable. The tracepoint logic was made to use the tasks
saved_preempt_count which could hold a stale "PREEMPT_ACTIVE",
instead of using the current preempt_count() call"
* tag 'trace-fixes-v3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing/sched: Check preempt_count() for current when reading task->state
ftrace/x86: Update i386 call to prepare_ftrace_return()
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/entry_32.S | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S index 344b63f18d14..1cf7c97ff175 100644 --- a/arch/x86/kernel/entry_32.S +++ b/arch/x86/kernel/entry_32.S @@ -1191,10 +1191,10 @@ ENTRY(ftrace_graph_caller) pushl %eax pushl %ecx pushl %edx - movl 0xc(%esp), %edx - lea 0x4(%ebp), %eax + movl 0xc(%esp), %eax + lea 0x4(%ebp), %edx movl (%ebp), %ecx - subl $MCOUNT_INSN_SIZE, %edx + subl $MCOUNT_INSN_SIZE, %eax call prepare_ftrace_return popl %edx popl %ecx |