Revision 57cdfdf829a850a317425ed93c6a576c9ee6329c authored by Anton Blanchard on 21 October 2010, 00:52:12 UTC, committed by Benjamin Herrenschmidt on 07 February 2011, 02:06:08 UTC
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
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| File | Mode | Size |
|---|---|---|
| Kconfig | -rw-r--r-- | 43.3 KB |
| Makefile | -rw-r--r-- | 1.0 KB |
| calibrate.c | -rw-r--r-- | 5.1 KB |
| do_mounts.c | -rw-r--r-- | 10.9 KB |
| do_mounts.h | -rw-r--r-- | 1.4 KB |
| do_mounts_initrd.c | -rw-r--r-- | 3.1 KB |
| do_mounts_md.c | -rw-r--r-- | 7.9 KB |
| do_mounts_rd.c | -rw-r--r-- | 8.1 KB |
| initramfs.c | -rw-r--r-- | 12.6 KB |
| main.c | -rw-r--r-- | 22.0 KB |
| noinitramfs.c | -rw-r--r-- | 1.5 KB |
| version.c | -rw-r--r-- | 1.1 KB |
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