linux-arm.git - Russell King's ARM Linux kernel tree

Age	Commit message (Collapse)	Author
2024-11-18	perf: arm-ni: Remove spurious NULL in attribute_group definition	Thomas Weißschuh
	This NULL value is most-likely a copy-paste error from an array definition. So far the NULL didn't have any effect. As there will be a union in struct attribute_group at this location, it will trigger a compiler warning. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Link: https://lore.kernel.org/r/20241118-sysfs-const-attribute_group-fixes-v1-1-48e0b0ad8cba@weissschuh.net Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-09-12	perf: arm-ni: Fix an NULL vs IS_ERR() bug	Dan Carpenter
	The devm_ioremap() function never returns error pointers, it returns a NULL pointer if there is an error. Fixes: 4d5a7680f2b4 ("perf: Add driver for Arm NI-700 interconnect PMU") Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org> Reviewed-by: Robin Murphy <robin.murphy@arm.com> Link: https://lore.kernel.org/r/04d6ccc3-6d31-4f0f-ab0f-7a88342cc09a@stanley.mountain Signed-off-by: Will Deacon <will@kernel.org>
2024-09-06	perf: Add driver for Arm NI-700 interconnect PMU	Robin Murphy
	The Arm NI-700 Network-on-Chip Interconnect has a relatively straightforward design with a hierarchy of voltage, power, and clock domains, where each clock domain then contains a number of interface units and a PMU which can monitor events thereon. As such, it begets a relatively straightforward driver to interface those PMUs with perf. Even more so than with arm-cmn, users will require detailed knowledge of the wider system topology in order to meaningfully analyse anything, since the interconnect itself cannot know what lies beyond the boundary of each inscrutably-numbered interface. Given that, for now they are also expected to refer to the NI-700 documentation for the relevant event IDs to provide as well. An identifier is implemented so we can come back and add jevents if anyone really wants to. Signed-off-by: Robin Murphy <robin.murphy@arm.com> Link: https://lore.kernel.org/r/9933058d0ab8138c78a61cd6852ea5d5ff48e393.1725470837.git.robin.murphy@arm.com Signed-off-by: Will Deacon <will@kernel.org>