Changes in Makefile

2cbb20b0 - tracing: Disable branch profiling in noinstr code

Fri, 21 Mar 2025 19:53:32 +0000

tracing: Disable branch profiling in noinstr codeCONFIG_TRACE_BRANCH_PROFILING inserts a call to ftrace_likely_update()for each use of likely() or unlikely(). That breaks noinstr rules ifthe affected function is annotated as noinstr.Disable branch profiling for files with noinstr functions. In additionto some individual files, this also includes the entire arch/x86subtree, as well as the kernel/entry, drivers/cpuidle, and drivers/idledirectories, all of which are noinstr-heavy.Due to the nature of how sched binaries are built by combining multiple.c files into one, branch profiling is disabled more broadly across thesched code than would otherwise be needed.This fixes many warnings like the following: vmlinux.o: warning: objtool: do_syscall_64+0x40: call to ftrace_likely_update() leaves .noinstr.text section vmlinux.o: warning: objtool: __rdgsbase_inactive+0x33: call to ftrace_likely_update() leaves .noinstr.text section vmlinux.o: warning: objtool: handle_bug.isra.0+0x198: call to ftrace_likely_update() leaves .noinstr.text section ...Reported-by: Ingo Molnar Suggested-by: Steven Rostedt Signed-off-by: Josh Poimboeuf Signed-off-by: Ingo Molnar Acked-by: Thomas Gleixner Cc: Linus Torvalds Link: https://lore.kernel.org/r/fb94fc9303d48a5ed370498f54500cc4c338eb6d.1742586676.git.jpoimboe@kernel.org List of files: /linux-6.15/drivers/idle/Makefile

ec8f24b7 - treewide: Add SPDX license identifier - Makefile/Kconfig

Sun, 19 May 2019 12:07:45 +0000

treewide: Add SPDX license identifier - Makefile/KconfigAdd SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any formThese files fall under the project license, GPL v2 only. The resulting SPDXlicense identifier is: GPL-2.0-onlySigned-off-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/idle/Makefile

b65ce83f - i7300_idle: Remove this driver

Fri, 18 Nov 2016 06:23:17 +0000

i7300_idle: Remove this driverIn preparation for removing the idle_notifier, remove its only user, thei7300_idle driver.i7300_idle was deployed in 2008 to reduce idle memory power on systemsusing the i7300 chipset. The driver worked by throttling thefully-buffered DIMMs during idle periods using the IOAT DMA engine.The driver ran only on the i7300 chip-set, and no other hardware has usedthis mechanism. The driver no longer has a maintainer.Removing this driver will increase idle power on i7300 systems when theyrun the new kernel without the driver.Signed-off-by: Len Brown Acked-by: Ingo Molnar Acked-by: Peter Zijlstra (Intel) Link: http://lkml.kernel.org/r/ad6a044e57cc75f44cc8621abe846e58f7882243.1479449716.git.len.brown@intel.comSigned-off-by: Thomas Gleixner List of files: /linux-6.15/drivers/idle/Makefile

26717172 - intel_idle: native hardware cpuidle driver for latest Intel processors

Mon, 08 Mar 2010 19:07:30 +0000

intel_idle: native hardware cpuidle driver for latest Intel processorsThis EXPERIMENTAL driver supersedes acpi_idle onIntel Atom Processors, Intel Core i3/i5/i7 Processorsand associated Intel Xeon processors.It does not support the Intel Core2 processor or earlier.For kernels configured with ACPI, CONFIG_INTEL_IDLE=yallows intel_idle to probe before the ACPI processor driver.Booting with "intel_idle.max_cstate=0" disables intel_idleand the system will fall back on ACPI's "acpi_idle".Typical Linux distributions load ACPI processor module early,making CONFIG_INTEL_IDLE=m not easily useful on ACPI platforms.intel_idle probes all processors at module_init time.Processors that are hot-added later will be limitedto using C1 in idle.Signed-off-by: Len Brown List of files: /linux-6.15/drivers/idle/Makefile

27471fdb - i7300_idle driver v1.55

Thu, 09 Oct 2008 18:45:22 +0000

i7300_idle driver v1.55The Intel 7300 Memory Controller supports dynamic throttling of memory which canbe used to save power when system is idle. This driver does the memorythrottling when all CPUs are idle on such a system.Refer to "Intel 7300 Memory Controller Hub (MCH)" datasheetfor the config space description.Signed-off-by: Andy Henroid Signed-off-by: Len Brown Signed-off-by: Venkatesh Pallipadi List of files: /linux-6.15/drivers/idle/Makefile