# tools/power/acpi/Makefile.rules - ACPI tool Makefile # # Copyright (c) 2015, Intel Corporation # Author: Lv Zheng # # This program is free software; you can redistribute it and/or # modify it under the terms of the GNU General Public License # as published by the Free Software Foundation; version 2 # of the License. objdir := $(OUTPUT)tools/$(TOOL)/ toolobjs := $(addprefix $(objdir),$(TOOL_OBJS)) $(OUTPUT)$(TOOL): $(toolobjs) FORCE $(ECHO) " LD " $(subst $(OUTPUT),,$@) $(QUIET) $(LD) $(CFLAGS) $(LDFLAGS) $(toolobjs) -L$(OUTPUT) -o $@ $(ECHO) " STRIP " $(subst $(OUTPUT),,$@) $(QUIET) $(STRIPCMD) $@ $(KERNEL_INCLUDE): $(ECHO) " MKDIR " $(subst $(OUTPUT),,$@) $(QUIET) mkdir -p $(KERNEL_INCLUDE) $(ECHO) " CP " $(subst $(OUTPUT),,$@) $(QUIET) cp -rf $(srctree)/../../../include/acpi $(KERNEL_INCLUDE)/ $(objdir)%.o: %.c $(KERNEL_INCLUDE) $(ECHO) " CC " $(subst $(OUTPUT),,$@) $(QUIET) $(CC) -c $(CFLAGS) -o $@ $< all: $(OUTPUT)$(TOOL) clean: $(ECHO) " RMOBJ " $(subst $(OUTPUT),,$(objdir)) $(QUIET) find $(objdir) \( -not -type d \)\ -and \( -name '*~' -o -name '*.[oas]' \)\ -type f -print | xargs rm -f $(ECHO) " RM " $(TOOL) $(QUIET) rm -f $(OUTPUT)$(TOOL) $(ECHO) " RMINC " $(subst $(OUTPUT),,$(KERNEL_INCLUDE)) $(QUIET) rm -rf $(KERNEL_INCLUDE) install-tools: $(ECHO) " INST " $(TOOL) $(QUIET) $(INSTALL) -d $(DESTDIR)$(sbindir) $(QUIET) $(INSTALL_PROGRAM) $(OUTPUT)$(TOOL) $(DESTDIR)$(sbindir) uninstall-tools: $(ECHO) " UNINST " $(TOOL) $(QUIET) rm -f $(DESTDIR)$(sbindir)/$(TOOL) install: all install-tools $(EXTRA_INSTALL) uninstall: uninstall-tools $(EXTRA_UNINSTALL) .PHONY: FORCE 26b7a37184dd3d2172394e23d585d6'>refslogtreecommitdiff
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authorAndrei Vagin <avagin@openvz.org>2017-01-04 19:28:14 -0800
committerEric W. Biederman <ebiederm@xmission.com>2017-01-10 13:34:56 +1300
commitadd7c65ca426b7a37184dd3d2172394e23d585d6 (patch)
tree28b08b519540041b06ed0ab0b1c005076b932e8e /tools/laptop/freefall
parent75422726b0f717d67db3283c2eb5bc14fa2619c5 (diff)
pid: fix lockdep deadlock warning due to ucount_lock
========================================================= [ INFO: possible irq lock inversion dependency detected ] 4.10.0-rc2-00024-g4aecec9-dirty #118 Tainted: G W --------------------------------------------------------- swapper/1/0 just changed the state of lock: (&(&sighand->siglock)->rlock){-.....}, at: [<ffffffffbd0a1bc6>] __lock_task_sighand+0xb6/0x2c0 but this lock took another, HARDIRQ-unsafe lock in the past: (ucounts_lock){+.+...} and interrupts could create inverse lock ordering between them. other info that might help us debug this: Chain exists of: &(&sighand->siglock)->rlock --> &(&tty->ctrl_lock)->rlock --> ucounts_lock Possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- lock(ucounts_lock); local_irq_disable(); lock(&(&sighand->siglock)->rlock); lock(&(&tty->ctrl_lock)->rlock); <Interrupt> lock(&(&sighand->siglock)->rlock); *** DEADLOCK *** This patch removes a dependency between rlock and ucount_lock. Fixes: f333c700c610 ("pidns: Add a limit on the number of pid namespaces") Cc: stable@vger.kernel.org Signed-off-by: Andrei Vagin <avagin@openvz.org> Acked-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Diffstat (limited to 'tools/laptop/freefall')