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* selftests/powerpc: Add a test of counting larx/stcxMichael Ellerman2020-05-151-0/+35
| | | | | | | | | | | | This is based on the count_instructions test. However this one also counts the number of failed stcx's, and in conjunction with knowing the size of the stcx loop, can calculate the total number of instructions executed even in the face of non-deterministic stcx failures. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200426114410.3917383-1-mpe@ellerman.id.au
* treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 191Thomas Gleixner2019-05-301-1/+1
| | | | | | | | | | | | | | | | | | | | | Based on 1 normalized pattern(s): licensed under gplv2 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 99 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Steve Winslow <swinslow@gmail.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190528170027.163048684@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* selftests/powerpc: Fix instruction loop for ABIv2 (LE)Michael Ellerman2014-06-111-38/+35
| | | | | Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* selftests: Add test of PMU instruction counting on powerpcMichael Ellerman2013-08-141-0/+46
This commit adds a test of instruction counting using the PMU on powerpc. Although the bulk of the code is architecture agnostic, the code needs to run a precisely sized loop which is implemented in assembler. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>