oprofile: use timer interrupt mode for now

PATCH Applied Dexuan Cui 2 participants 3 messages Mar 14, 2011

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Dexuan Cui

author

2011-03-14 09:05 UTC #0 lore raw

cover oprofile: use timer interrupt mode for now

From: Dexuan Cui <[email protected]>

Currently oprofile's event based interrupt mode doesn't work(Bug #828) in qemux86 and qemux86-64. We can use timer interrupt mode for now.

With this workaround, oprofile can work in qemux86 and qemux86-64. I tested in Ubuntu 10.04.

With this workaround, we can lower the priority of bug #828 and I'll continue to look into it.

Pull URL: git://git.pokylinux.org/poky-contrib.git
Branch: dcui/master
Browse: http://git.pokylinux.org/cgit.cgi/poky-contrib/log/?h=dcui/master

Thanks,
Dexuan Cui <[email protected]>
---

Dexuan Cui (1):
poky-qemu-internal: force oprofile into using timer interrupt mode

    for qemux86/qemux86-64 for now

 scripts/poky-qemu-internal |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

Signature · 1 line

1.7.2

Dexuan Cui

author

2011-03-14 09:05 UTC #1 lore raw

PATCH 1/1 poky-qemu-internal: force oprofile into using timer interrupt mode for qemux86/qemux86-64 for now

From: Dexuan Cui <[email protected]>

Currently oprofile's event based interrupt mode doesn't work(Bug #828) in qemux86 and qemux86-64. We can use timer interrupt mode for now.

Signed-off-by Dexuan Cui <[email protected]>

---
 scripts/poky-qemu-internal |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

scripts/poky-qemu-internal +6 -0

index 3638a65..046e2b6 100755
@@ -309,6 +309,9 @@ if [ "$MACHINE" = "qemux86" ]; then
         KERNCMDLINE="root=/dev/nfs nfsroot=$NFS_SERVER:$NFS_DIR,$UNFS_OPTS rw $KERNEL_NETWORK_CMD mem=$QEMU_MEMORY"
         QEMUOPTIONS="$QEMU_NETWORK_CMD $QEMU_UI_OPTIONS"
     fi
+    # Currently oprofile's event based interrupt mode doesn't work(Bug #828) in
+    # qemux86 and qemux86-64. We can use timer interrupt mode for now.
+    KERNCMDLINE="$KERNCMDLINE oprofile.timer=1"
 fi
 
 if [ "$MACHINE" = "qemux86-64" ]; then

@@ -330,6 +333,9 @@ if [ "$MACHINE" = "qemux86-64" ]; then
         KERNCMDLINE="root=/dev/nfs nfsroot=$NFS_SERVER:$NFS_DIR,$UNFS_OPTS rw $KERNEL_NETWORK_CMD mem=$QEMU_MEMORY"
         QEMUOPTIONS="$QEMU_NETWORK_CMD $QEMU_UI_OPTIONS"
     fi
+    # Currently oprofile's event based interrupt mode doesn't work(Bug #828) in
+    # qemux86 and qemux86-64. We can use timer interrupt mode for now.
+    KERNCMDLINE="$KERNCMDLINE oprofile.timer=1"
 fi
 
 if [ "$MACHINE" = "spitz" ]; then

Signature · 1 line

1.7.2

Richard Purdie

Applied

2011-03-14 21:11 UTC #2 lore raw

In reply to Dexuan Cui

Quoted 20 lines · Dexuan Cui

From: Dexuan Cui <[email protected]>
Currently oprofile's event based interrupt mode doesn't work(Bug #828) in qemux86 and qemux86-64. We can use timer interrupt mode for now.
With this workaround, oprofile can work in qemux86 and qemux86-64. I tested in Ubuntu 10.04.
With this workaround, we can lower the priority of bug #828 and I'll continue to look into it.
Pull URL: git://git.pokylinux.org/poky-contrib.git
Branch: dcui/master
Browse: http://git.pokylinux.org/cgit.cgi/poky-contrib/log/?h=dcui/master
Thanks,
Dexuan Cui <[email protected]>
---

Quoted 6 lines

Dexuan Cui (1):
poky-qemu-internal: force oprofile into using timer interrupt mode
    for qemux86/qemux86-64 for now
 scripts/poky-qemu-internal |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

Merged into OE-Core and Poky master.

Cheers,

Richard