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| author | Oleg Nesterov <oleg@tv-sign.ru> | 2008-07-25 10:47:54 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-25 19:53:41 +0200 |
| commit | 8448502cfc915f70e3f8923849ade27d472044cb (patch) | |
| tree | 964522eb36ea5424ece910092da5dce773c1f6cc /arch/x86 | |
| parent | workqueues: schedule_on_each_cpu() can use schedule_work_on() (diff) | |
| download | linux-8448502cfc915f70e3f8923849ade27d472044cb.tar.xz linux-8448502cfc915f70e3f8923849ade27d472044cb.zip | |
workqueues: do CPU_UP_CANCELED if CPU_UP_PREPARE fails
The bug was pointed out by Akinobu Mita <akinobu.mita@gmail.com>, and this
patch is based on his original patch.
workqueue_cpu_callback(CPU_UP_PREPARE) expects that if it returns
NOTIFY_BAD, _cpu_up() will send CPU_UP_CANCELED then.
However, this is not true since
"cpu hotplug: cpu: deliver CPU_UP_CANCELED only to NOTIFY_OKed callbacks with CPU_UP_PREPARE"
commit: a0d8cdb652d35af9319a9e0fb7134de2a276c636
The callback which has returned NOTIFY_BAD will not receive
CPU_UP_CANCELED. Change the code to fulfil the CPU_UP_CANCELED logic if
CPU_UP_PREPARE fails.
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Reported-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/x86')
0 files changed, 0 insertions, 0 deletions