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| author |   Anton Blanchard <anton@samba.org> | 2010-10-21 00:52:12 +0000 |
|---|---|---|
| committer |   Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2011-02-07 13:06:08 +1100 |
| commit | 57cdfdf829a850a317425ed93c6a576c9ee6329c (patch) | |
| tree | 80e1e9e5f742e2a67ed4e43e6cc2e2823f27e72d /net/unix/af_unix.c | |
| parent | powerpc/numa: Fix bug in unmap_cpu_from_node (diff) | |
| download | wireguard-linux-57cdfdf829a850a317425ed93c6a576c9ee6329c.tar.xz wireguard-linux-57cdfdf829a850a317425ed93c6a576c9ee6329c.zip | |
powerpc: Fix hcall tracepoint recursion
Spinlocks on shared processor partitions use H_YIELD to notify the
hypervisor we are waiting on another virtual CPU. Unfortunately this means
the hcall tracepoints can recurse.
The patch below adds a percpu depth and checks it on both the entry and
exit hcall tracepoints.
Signed-off-by: Anton Blanchard <anton@samba.org>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: stable@kernel.org
Diffstat (limited to 'net/unix/af_unix.c')
0 files changed, 0 insertions, 0 deletions