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| author | Suresh Siddha <suresh.b.siddha@intel.com> | 2011-06-23 22:19:29 +0400 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2011-06-28 02:17:13 +0400 |
| commit | 192d8857427dd23707d5f0b86ca990c3af6f2d74 (patch) | |
| tree | 1de33c7a3adbe14863f9bbdaf57a8b76c6144f62 /include | |
| parent | f740e6cd0cb5e7468e46831aeb4d9c30e03d5ebc (diff) | |
| download | linux-192d8857427dd23707d5f0b86ca990c3af6f2d74.tar.xz | |
x86, mtrr: use stop_machine APIs for doing MTRR rendezvous
MTRR rendezvous sequence is not implemened using stop_machine() before, as this
gets called both from the process context aswell as the cpu online paths
(where the cpu has not come online and the interrupts are disabled etc).
Now that we have a new stop_machine_from_inactive_cpu() API, use it for
rendezvous during mtrr init of a logical processor that is coming online.
For the rest (runtime MTRR modification, system boot, resume paths), use
stop_machine() to implement the rendezvous sequence. This will consolidate and
cleanup the code.
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Link: http://lkml.kernel.org/r/20110623182057.076997177@sbsiddha-MOBL3.sc.intel.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/stop_machine.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/include/linux/stop_machine.h b/include/linux/stop_machine.h index e0f2da25d751..4a9d0c7edc65 100644 --- a/include/linux/stop_machine.h +++ b/include/linux/stop_machine.h @@ -27,8 +27,6 @@ struct cpu_stop_work { struct cpu_stop_done *done; }; -extern struct mutex stop_cpus_mutex; - int stop_one_cpu(unsigned int cpu, cpu_stop_fn_t fn, void *arg); void stop_one_cpu_nowait(unsigned int cpu, cpu_stop_fn_t fn, void *arg, struct cpu_stop_work *work_buf); |