Linux kernel stable tree https://git.rulkc.org/pub/scm/linux/kernel/git/stable/linux.git/atom?h=linux-3.2.y 2017-07-18T17:38:38+00:00 2017-07-18T17:38:38+00:00 Josh Poimboeuf jpoimboe@redhat.com 2017-03-16T13:56:28+00:00 urn:sha1:506c53a21180973ffe74b6c6c1468709d4e953b1 commit 61b79e16c68d703dde58c25d3935d67210b7d71b upstream. Paul Menzel reported a warning: WARNING: CPU: 0 PID: 774 at /build/linux-ROBWaj/linux-4.9.13/kernel/trace/trace_functions_graph.c:233 ftrace_return_to_handler+0x1aa/0x1e0 Bad frame pointer: expected f6919d98, received f6919db0 from func acpi_pm_device_sleep_wake return to c43b6f9d The warning means that function graph tracing is broken for the acpi_pm_device_sleep_wake() function. That's because the ACPI Makefile unconditionally sets the '-Os' gcc flag to optimize for size. That's an issue because mcount-based function graph tracing is incompatible with '-Os' on x86, thanks to the following gcc bug: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=42109 I have another patch pending which will ensure that mcount-based function graph tracing is never used with CONFIG_CC_OPTIMIZE_FOR_SIZE on x86. But this patch is needed in addition to that one because the ACPI Makefile overrides that config option for no apparent reason. It has had this flag since the beginning of git history, and there's no related comment, so I don't know why it's there. As far as I can tell, there's no reason for it to be there. The appropriate behavior is for it to honor CONFIG_CC_OPTIMIZE_FOR_{SIZE,PERFORMANCE} like the rest of the kernel. Reported-by: Paul Menzel <pmenzel@molgen.mpg.de> Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> 2011-05-29T18:19:16+00:00 Linus Torvalds torvalds@linux-foundation.org 2011-05-29T18:19:16+00:00 urn:sha1:daa94222b638bfe34f745d0982de7a165ce7f67c * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: ACPI EC: remove redundant code ACPI: Add D3 cold state ACPI: processor: fix processor_physically_present in UP kernel ACPI: Split out custom_method functionality into an own driver ACPI: Cleanup custom_method debug stuff ACPI EC: enable MSI workaround for Quanta laptops ACPICA: Update to version 20110413 ACPICA: Execute an orphan _REG method under the EC device ACPICA: Move ACPI_NUM_PREDEFINED_REGIONS to a more appropriate place ACPICA: Update internal address SpaceID for DataTable regions ACPICA: Add more methods eligible for NULL package element removal ACPICA: Split all internal Global Lock functions to new file - evglock ACPI: EC: add another DMI check for ASUS hardware ACPI EC: remove dead code ACPICA: Fix code divergence of global lock handling ACPICA: Use acpi_os_create_lock interface ACPI: osl, add acpi_os_create_lock interface ACPI:Fix goto flows in thermal-sys 2011-05-29T05:50:40+00:00 Thomas Renninger trenn@suse.de 2011-05-26T10:26:24+00:00 urn:sha1:526b4af47f44148c9d665e57723ed9f86634c6e3 With /sys/kernel/debug/acpi/custom_method root can write to arbitrary memory and increase his priveleges, even if these are restricted. -> Make this an own debug .config option and warn about the security issue in the config description. -> Still keep acpi/debugfs.c which now only creates an empty /sys/kernel/debug/acpi directory. There might be other users of it later. Signed-off-by: Thomas Renninger <trenn@suse.de> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: rui.zhang@intel.com Signed-off-by: Len Brown <len.brown@intel.com> 2011-05-25T18:43:32+00:00 Jean Delvare khali@linux-fr.org 2011-05-25T18:43:32+00:00 urn:sha1:7d0333653840b0c692f55f1aaaa71d626fb00870 As discussed earlier, the ACPI power meter driver would better live in drivers/hwmon, as its only purpose is to create hwmon-style interfaces for ACPI 4.0 power meter devices. Users are more likely to look for it there, and less likely to accidentally hide it by unselecting its dependencies. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: "Darrick J. Wong" <djwong@us.ibm.com> Acked-by: Guenter Roeck <guenter.roeck@ericsson.com> Cc: Len Brown <lenb@kernel.org> 2011-01-12T10:03:13+00:00 Len Brown len.brown@intel.com 2011-01-12T10:03:13+00:00 urn:sha1:4b63bd35eb4e7959b0f7be17634689d34311524b 2011-01-07T05:36:55+00:00 Rafael J. Wysocki rjw@sisk.pl 2011-01-07T00:43:44+00:00 urn:sha1:976513dbfc1547c7b1822566923058655f0c32fd The saving of the ACPI NVS area during hibernation and suspend and restoring it during the subsequent resume is entirely specific to ACPI, so move it to drivers/acpi and drop the CONFIG_SUSPEND_NVS configuration option which is redundant. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com> 2010-12-14T05:22:14+00:00 Zhao Yakui yakui.zhao@intel.com 2010-12-08T02:10:18+00:00 urn:sha1:e92b297cc72ade7a58eaec7e01c906d856f8ab6e ACPI 4.0 spec adds the ACPI IPMI opregion, which means that the ACPI AML code can also communicate with the BMC controller. This is to install the ACPI IPMI opregion and enable the ACPI to access the BMC controller through the IPMI message. It will create IPMI user interface for every IPMI device detected in ACPI namespace and install the corresponding IPMI opregion space handler. Then it can enable ACPI to access the BMC controller through the IPMI message. The following describes how to process the IPMI request in IPMI space handler: 1. format the IPMI message based on the request in AML code. IPMI system address. Now the address type is SYSTEM_INTERFACE_ADDR_TYPE IPMI net function & command IPMI message payload 2. send the IPMI message by using the function of ipmi_request_settime 3. wait for the completion of IPMI message. It can be done in different routes: One is in handled in IPMI user recv callback function. Another is handled in timeout function. 4. format the IPMI response and return it to ACPI AML code. At the same time it also addes the module dependency. The ACPI IPMI opregion will depend on the IPMI subsystem. Signed-off-by: Zhao Yakui <yakui.zhao@intel.com> cc: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Corey Minyard <cminyard@mvista.com> Signed-off-by: Len Brown <len.brown@intel.com> 2010-08-15T05:06:31+00:00 Len Brown len.brown@intel.com 2010-08-15T05:06:31+00:00 urn:sha1:95ee46aa8698f2000647dfb362400fadbb5807cf Conflicts: drivers/acpi/debug.c Signed-off-by: Len Brown <len.brown@intel.com> 2010-08-15T04:27:51+00:00 Zhang Rui rui.zhang@intel.com 2010-07-15T02:46:33+00:00 urn:sha1:47f5c892b06797336a34f1096b4b617623aa1960 Rmove deprecated ACPI procfs I/F, including /proc/acpi/debug_layer /proc/acpi/debug_level /proc/acpi/info /proc/acpi/dsdt /proc/acpi/fadt /proc/acpi/sleep because the sysfs I/F is already available and has been working well for years. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com> 2010-08-15T04:26:30+00:00 Zhang Rui rui.zhang@intel.com 2010-07-15T02:46:30+00:00 urn:sha1:1c8fce27e275fd7c6b75bc6455745f02d3903ee6 Introduce drivers/acpi/sysfs.c. code for ACPI sysfs I/F, including #ifdef ACPI_DEBUG /sys/module/acpi/parameters/debug_layer /sys/module/acpi/parameters/debug_level /sys/module/acpi/parameters/trace_method_name /sys/module/acpi/parameters/trace_debug_layer /sys/module/acpi/parameters/trace_debug_level /sys/module/acpi/parameters/trace_state #endif /sys/module/acpi/parameters/acpica_version /sys/firmware/acpi/tables/ /sys/firmware/acpi/interrupts/ is moved to this file. No function change in this patch. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>