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52bb452558
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. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEbBAABAgAGBQJUi75HAAoJEEjnJuOKh9ldYVoH+LZsoT0m5UVQT8vQmahXABnY A3l19KGUAL3qaWRf4Au50sK2NdBTfGjvt8KGNkskPsvVv5X3z0GoXIIA76SD/MtX ysyLUXGCayNCqb3akuzznGZxE8CNKcU5aj3Hy+hIvRI6tgg2sEDt67QBAYsukIOR MN3us7ezvh0r+8muyPdrpC2OtkwsC1QvX2My1km0UU67CcWxo8zIuzUeeMSe+1+4 6eCjLsVWAznaTo5W9i2DTKpw85hZjfAFgaGn21yRrAHbC+REpaigB9mxZg3Bb1Qb SovdyGSSEspke4/0Pu7bVXW/lx7dlnEsNWqc0RHWY1nd5FINQY+tRfbmgSoPRA== =DMsV -----END PGP SIGNATURE----- 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() |
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