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path: root/tools/build/Makefile
blob: aaf7ed329a453a87b91a38f73b6cc25c27764c82 (plain)
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ifeq ($(srctree),)
srctree := $(patsubst %/,%,$(dir $(CURDIR)))
srctree := $(patsubst %/,%,$(dir $(srctree)))
endif

include $(srctree)/tools//scripts/Makefile.include

define allow-override
  $(if $(or $(findstring environment,$(origin $(1))),\
            $(findstring command line,$(origin $(1)))),,\
    $(eval $(1) = $(2)))
endef

$(call allow-override,CC,$(CROSS_COMPILE)gcc)
$(call allow-override,LD,$(CROSS_COMPILE)ld)

HOSTCC ?= gcc
HOSTLD ?= ld
HOSTAR ?= ar

export HOSTCC HOSTLD HOSTAR

ifeq ($(V),1)
  Q =
else
  Q = @
endif

export Q srctree CC LD

MAKEFLAGS := --no-print-directory
build     := -f $(srctree)/tools/build/Makefile.build dir=. obj

all: $(OUTPUT)fixdep

clean:
	$(call QUIET_CLEAN, fixdep)
	$(Q)find . -name '*.o' -delete -o -name '\.*.cmd' -delete -o -name '\.*.d' -delete
	$(Q)rm -f fixdep

$(OUTPUT)fixdep-in.o: FORCE
	$(Q)$(MAKE) $(build)=fixdep

$(OUTPUT)fixdep: $(OUTPUT)fixdep-in.o
	$(QUIET_LINK)$(HOSTCC) $(LDFLAGS) -o $@ $<

FORCE:

.PHONY: FORCE
/isp1760-if.c?h=nds-private-remove&id=79c6f448c8b79c321e4a1f31f98194e4f6b6cae7&id2=0c744ea4f77d72b3dcebb7a8f2684633ec79be88'>diff)
tracing: Fix hwlat kthread migration
The hwlat tracer creates a kernel thread at start of the tracer. It is pinned to a single CPU and will move to the next CPU after each period of running. If the user modifies the migration thread's affinity, it will not change after that happens. The original code created the thread at the first instance it was called, but later was changed to destroy the thread after the tracer was finished, and would not be created until the next instance of the tracer was established. The code that initialized the affinity was only called on the initial instantiation of the tracer. After that, it was not initialized, and the previous affinity did not match the current newly created one, making it appear that the user modified the thread's affinity when it did not, and the thread failed to migrate again. Cc: stable@vger.kernel.org Fixes: 0330f7aa8ee6 ("tracing: Have hwlat trace migrate across tracing_cpumask CPUs") Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'drivers/usb/isp1760/isp1760-if.c')