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| author | Keir Fraser <keir.fraser@citrix.com> | 2010-02-03 09:35:23 +0000 |
|---|---|---|
| committer | Keir Fraser <keir.fraser@citrix.com> | 2010-02-03 09:35:23 +0000 |
| commit | eddd8e39554e06e792d5fe5bb5dbeed8dbeceaf6 (patch) | |
| tree | efc50c787da85fc095579bd5ebc3d72809ec420a /xen/common/memory.c | |
| parent | 2ca873ab32a1424cc425fc9ee0b3285f22cc8ee0 (diff) | |
| download | xen-eddd8e39554e06e792d5fe5bb5dbeed8dbeceaf6.tar.gz xen-eddd8e39554e06e792d5fe5bb5dbeed8dbeceaf6.tar.bz2 xen-eddd8e39554e06e792d5fe5bb5dbeed8dbeceaf6.zip | |
xentrace: Trace p2m events
Add more tracing to aid in debugging ballooning / PoD:
* Nested page faults for EPT/NPT systems
* set_p2m_enry
* Decrease reservation (for ballooning)
* PoD populate, zero reclaim, superpage splinter
Signed-off-by: George Dunlap <george.dunlap@eu.citrix.com>
Diffstat (limited to 'xen/common/memory.c')
| -rw-r--r-- | xen/common/memory.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/xen/common/memory.c b/xen/common/memory.c index 329483756a..b1db5f5888 100644 --- a/xen/common/memory.c +++ b/xen/common/memory.c @@ -28,6 +28,7 @@ #include <xen/numa.h> #include <public/memory.h> #include <xsm/xsm.h> +#include <xen/trace.h> struct memop_args { /* INPUT */ @@ -222,6 +223,20 @@ static void decrease_reservation(struct memop_args *a) if ( unlikely(__copy_from_guest_offset(&gmfn, a->extent_list, i, 1)) ) goto out; + if ( tb_init_done ) + { + struct { + u64 gfn; + int d:16,order:16; + } t; + + t.gfn = gmfn; + t.d = a->domain->domain_id; + t.order = a->extent_order; + + __trace_var(TRC_MEM_DECREASE_RESERVATION, 0, sizeof(t), (unsigned char *)&t); + } + /* See if populate-on-demand wants to handle this */ if ( is_hvm_domain(a->domain) && p2m_pod_decrease_reservation(a->domain, gmfn, a->extent_order) ) |