[DTrace-devel] [PATCH] test: Expect USDT argmap to fail on ARM on older kernels

[Kris Van Hees]

I am holding off on this patch for the moment, just to get a closer look at
the potential cause (and some info on how old the kernel needs to be for this
to fail).  I would expect arg access to be the problem rather than the mapping
because the mapping is simply something that happens in BPF code.  That should
not be kernel-dependent.

On Wed, Mar 19, 2025 at 02:32:29AM -0400, eugene.loh--- via DTrace-devel wrote:
> From: Eugene Loh <eugene.loh at oracle.com>
> 
> Signed-off-by: Eugene Loh <eugene.loh at oracle.com>
> ---
>  test/unittest/usdt/skip_arm_uek6.x            | 25 +++++++++++++++++++
>  .../usdt/tst.argmap-typed-partial.aarch64.x   |  1 +
>  test/unittest/usdt/tst.argmap-typed.aarch64.x |  1 +
>  .../tst.multiprov-dupprobe-fire.aarch64.x     |  1 +
>  .../tst.multiprov-dupprobe-shlibs.aarch64.x   |  1 +
>  .../usdt/tst.multiprovider-fire.aarch64.x     |  1 +
>  6 files changed, 30 insertions(+)
>  create mode 100755 test/unittest/usdt/skip_arm_uek6.x
>  create mode 120000 test/unittest/usdt/tst.argmap-typed-partial.aarch64.x
>  create mode 120000 test/unittest/usdt/tst.argmap-typed.aarch64.x
>  create mode 120000 test/unittest/usdt/tst.multiprov-dupprobe-fire.aarch64.x
>  create mode 120000 test/unittest/usdt/tst.multiprov-dupprobe-shlibs.aarch64.x
>  create mode 120000 test/unittest/usdt/tst.multiprovider-fire.aarch64.x
> 
> diff --git a/test/unittest/usdt/skip_arm_uek6.x b/test/unittest/usdt/skip_arm_uek6.x
> new file mode 100755
> index 000000000..252cbebb5
> --- /dev/null
> +++ b/test/unittest/usdt/skip_arm_uek6.x
> @@ -0,0 +1,25 @@
> +#!/bin/bash
> +# Licensed under the Universal Permissive License v 1.0 as shown at
> +# http://oss.oracle.com/licenses/upl.
> +#
> +# @@skip: not run directly by test harness
> +#
> +# Tests that depend on USDT argument translation fail on ARM for UEK6.
> +# They're fine for UEK7.  It is unclear in exactly which kernel they
> +# start working.
> +
> +if [[ `uname -m` != "aarch64" ]]; then
> +	exit 0
> +fi
> +
> +read MAJOR MINOR <<< `uname -r | grep -Eo '^[0-9]+\.[0-9]+' | tr '.' ' '`
> +
> +if [ $MAJOR -gt 5 ]; then
> +	exit 0
> +fi
> +if [ $MAJOR -eq 5 -a $MINOR -ge 10 ]; then
> +	exit 0
> +fi
> +
> +echo "USDT argmap not working on ARM on older kernels"
> +exit 1
> diff --git a/test/unittest/usdt/tst.argmap-typed-partial.aarch64.x b/test/unittest/usdt/tst.argmap-typed-partial.aarch64.x
> new file mode 120000
> index 000000000..8d462f98f
> --- /dev/null
> +++ b/test/unittest/usdt/tst.argmap-typed-partial.aarch64.x
> @@ -0,0 +1 @@
> +skip_arm_uek6.x
> \ No newline at end of file
> diff --git a/test/unittest/usdt/tst.argmap-typed.aarch64.x b/test/unittest/usdt/tst.argmap-typed.aarch64.x
> new file mode 120000
> index 000000000..8d462f98f
> --- /dev/null
> +++ b/test/unittest/usdt/tst.argmap-typed.aarch64.x
> @@ -0,0 +1 @@
> +skip_arm_uek6.x
> \ No newline at end of file
> diff --git a/test/unittest/usdt/tst.multiprov-dupprobe-fire.aarch64.x b/test/unittest/usdt/tst.multiprov-dupprobe-fire.aarch64.x
> new file mode 120000
> index 000000000..8d462f98f
> --- /dev/null
> +++ b/test/unittest/usdt/tst.multiprov-dupprobe-fire.aarch64.x
> @@ -0,0 +1 @@
> +skip_arm_uek6.x
> \ No newline at end of file
> diff --git a/test/unittest/usdt/tst.multiprov-dupprobe-shlibs.aarch64.x b/test/unittest/usdt/tst.multiprov-dupprobe-shlibs.aarch64.x
> new file mode 120000
> index 000000000..8d462f98f
> --- /dev/null
> +++ b/test/unittest/usdt/tst.multiprov-dupprobe-shlibs.aarch64.x
> @@ -0,0 +1 @@
> +skip_arm_uek6.x
> \ No newline at end of file
> diff --git a/test/unittest/usdt/tst.multiprovider-fire.aarch64.x b/test/unittest/usdt/tst.multiprovider-fire.aarch64.x
> new file mode 120000
> index 000000000..8d462f98f
> --- /dev/null
> +++ b/test/unittest/usdt/tst.multiprovider-fire.aarch64.x
> @@ -0,0 +1 @@
> +skip_arm_uek6.x
> \ No newline at end of file
> -- 
> 2.43.5
> 
> 
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