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| author | jkoshy <jkoshy@FreeBSD.org> | 2005-08-22 02:59:51 +0000 |
|---|---|---|
| committer | jkoshy <jkoshy@FreeBSD.org> | 2005-08-22 02:59:51 +0000 |
| commit | b20d294c73d95b02a2b3f726973aac69b368e993 (patch) | |
| tree | 02358819000c4096ba1d8816b5e9abfe4c642fb4 | |
| parent | 71b13ff5f6a5cabc6c58eb9a4635541cf017fce3 (diff) | |
| download | FreeBSD-src-b20d294c73d95b02a2b3f726973aac69b368e993.zip FreeBSD-src-b20d294c73d95b02a2b3f726973aac69b368e993.tar.gz | |
Turn off sampling modes on the AMD64 till the time I can track down
the reason for the double fault seen when sampling under load.
MFC after: 3 days
| -rw-r--r-- | sys/dev/hwpmc/hwpmc_amd.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/sys/dev/hwpmc/hwpmc_amd.c b/sys/dev/hwpmc/hwpmc_amd.c index 6285f7f..280e80a 100644 --- a/sys/dev/hwpmc/hwpmc_amd.c +++ b/sys/dev/hwpmc/hwpmc_amd.c @@ -474,6 +474,11 @@ amd_allocate_pmc(int cpu, int ri, struct pmc *pm, return 0; } +#if __amd64__ + if (pd->pd_caps & PMC_CAP_INTERRUPT) + return EOPNOTSUPP; /* XXX avoid a processor double fault */ +#endif + #if DEBUG KASSERT(pd->pd_class == amd_pmc_class, ("[amd,%d] Unknown PMC class (%d)", __LINE__, pd->pd_class)); |
