Re: [PATCH 10/10] Add sample notification program [ver #3]
From: Eugeniu Rosca <hidden>
Date: 2019-06-06 21:21:58
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keyrings, linux-block, linux-fsdevel, linux-security-module, lkml
Hi David, On Thu, Jun 06, 2019 at 10:43:33AM +0100, David Howells wrote: [..]
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diff --git a/samples/watch_queue/Makefile b/samples/watch_queue/Makefile new file mode 100644 index 000000000000..42b694430d0f --- /dev/null +++ b/samples/watch_queue/Makefile@@ -0,0 +1,9 @@ +# List of programs to build +hostprogs-y := watch_test + +# Tell kbuild to always build the programs +always := $(hostprogs-y) + +HOSTCFLAGS_watch_test.o += -I$(objtree)/usr/include
How about arm64? Do you intend to enable cross-compilation?
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+ +HOSTLOADLIBES_watch_test += -lkeyutilsdiff --git a/samples/watch_queue/watch_test.c b/samples/watch_queue/watch_test.c new file mode 100644 index 000000000000..893a5380f792 --- /dev/null +++ b/samples/watch_queue/watch_test.c
[..]
+ asm ("lfence" : : : "memory" );[..]
+ asm("mfence" ::: "memory");FWIW, trying to cross-compile it returned: aarch64-linux-gnu-gcc -I../../usr/include -I../../include watch_test.c -o watch_test /tmp/ccDXYynm.s: Assembler messages: /tmp/ccDXYynm.s:471: Error: unknown mnemonic `lfence' -- `lfence' /tmp/ccDXYynm.s:568: Error: unknown mnemonic `mfence' -- `mfence' <builtin>: recipe for target 'watch_test' failed make: *** [watch_test] Error 1 -- Best Regards, Eugeniu.