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| author |   Heiko Carstens <heiko.carstens@de.ibm.com> | 2008-10-13 23:50:10 +0200 |
|---|---|---|
| committer |   Rusty Russell <rusty@rustcorp.com.au> | 2008-10-22 10:00:26 +1100 |
| commit | c9583e55fa2b08a230c549bd1e3c0bde6c50d9cc (patch) | |
| tree | ec535aced7cdf7390290a4bf61402346b166c07b /init/main.c | |
| parent | workqueue: introduce create_rt_workqueue (diff) | |
| download | linux-dev-c9583e55fa2b08a230c549bd1e3c0bde6c50d9cc.tar.xz linux-dev-c9583e55fa2b08a230c549bd1e3c0bde6c50d9cc.zip | |
stop_machine: use workqueues instead of kernel threads
Convert stop_machine to a workqueue based approach. Instead of using kernel
threads for stop_machine we now use a an rt workqueue to synchronize all
cpus.
This has the advantage that all needed per cpu threads are already created
when stop_machine gets called. And therefore a call to stop_machine won't
fail anymore. This is needed for s390 which needs a mechanism to synchronize
all cpus without allocating any memory.
As Rusty pointed out free_module() needs a non-failing stop_machine interface
as well.
As a side effect the stop_machine code gets simplified.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'init/main.c')
0 files changed, 0 insertions, 0 deletions