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| author | Nicholas Piggin <npiggin@gmail.com> | 2018-04-01 13:36:13 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-04-03 15:59:09 +0300 |
| commit | 6bed3237624e3faad1592543952907cd01a42c83 (patch) | |
| tree | b3a9aa7ef1247c67ad75b42147e13f35ed528a8f /drivers/oprofile/buffer_sync.c | |
| parent | a2b5e056b75ee6ef0777817644a456b36b96ce38 (diff) | |
| download | linux-6bed3237624e3faad1592543952907cd01a42c83.tar.xz | |
powerpc: use NMI IPI for smp_send_stop
Use the NMI IPI rather than smp_call_function for smp_send_stop.
Have stopped CPUs hard disable interrupts rather than just soft
disable.
This function is used in crash/panic/shutdown paths to bring other
CPUs down as quickly and reliably as possible, and minimizing their
potential to cause trouble.
Avoiding the Linux smp_call_function infrastructure and (if supported)
using true NMI IPIs makes this more robust.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'drivers/oprofile/buffer_sync.c')
0 files changed, 0 insertions, 0 deletions