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| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2024-09-02 21:17:22 +0200 |
|---|---|---|
| committer | Jason A. Donenfeld <Jason@zx2c4.com> | 2024-09-13 17:28:36 +0200 |
| commit | 8072b39c3a75b63bc08737a74b24c263b7909ba0 (patch) | |
| tree | 3bea24a4f90f378ab2bd82b916a47700c15771c4 /arch/powerpc/kernel/vdso/Makefile | |
| parent | powerpc/vdso: Wire up getrandom() vDSO implementation on VDSO32 (diff) | |
| download | linux-8072b39c3a75b63bc08737a74b24c263b7909ba0.tar.xz linux-8072b39c3a75b63bc08737a74b24c263b7909ba0.zip | |
powerpc/vdso: Wire up getrandom() vDSO implementation on VDSO64
Extend getrandom() vDSO implementation to VDSO64.
Tested on QEMU on both ppc64_defconfig and ppc64le_defconfig.
Results from a Power9 (PowerNV):
~ # ./vdso_test_getrandom bench-single
vdso: 25000000 times in 0.787943615 seconds
libc: 25000000 times in 14.101887252 seconds
syscall: 25000000 times in 14.047475082 seconds
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Tested-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Diffstat (limited to 'arch/powerpc/kernel/vdso/Makefile')
| -rw-r--r-- | arch/powerpc/kernel/vdso/Makefile | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/vdso/Makefile b/arch/powerpc/kernel/vdso/Makefile index 7a4a935406d8..56fb1633529a 100644 --- a/arch/powerpc/kernel/vdso/Makefile +++ b/arch/powerpc/kernel/vdso/Makefile @@ -9,6 +9,7 @@ obj-vdso32 = sigtramp32-32.o gettimeofday-32.o datapage-32.o cacheflush-32.o not obj-vdso64 = sigtramp64-64.o gettimeofday-64.o datapage-64.o cacheflush-64.o note-64.o getcpu-64.o obj-vdso32 += getrandom-32.o vgetrandom-chacha-32.o +obj-vdso64 += getrandom-64.o vgetrandom-chacha-64.o ifneq ($(c-gettimeofday-y),) CFLAGS_vgettimeofday-32.o += -include $(c-gettimeofday-y) @@ -21,6 +22,7 @@ endif ifneq ($(c-getrandom-y),) CFLAGS_vgetrandom-32.o += -include $(c-getrandom-y) + CFLAGS_vgetrandom-64.o += -include $(c-getrandom-y) $(call cc-option, -ffixed-r30) endif # Build rules @@ -34,7 +36,7 @@ endif targets := $(obj-vdso32) vdso32.so.dbg vgettimeofday-32.o vgetrandom-32.o targets += crtsavres-32.o obj-vdso32 := $(addprefix $(obj)/, $(obj-vdso32)) -targets += $(obj-vdso64) vdso64.so.dbg vgettimeofday-64.o +targets += $(obj-vdso64) vdso64.so.dbg vgettimeofday-64.o vgetrandom-64.o obj-vdso64 := $(addprefix $(obj)/, $(obj-vdso64)) ccflags-y := -fno-common -fno-builtin -DBUILD_VDSO @@ -71,7 +73,7 @@ CPPFLAGS_vdso64.lds += -P -C # link rule for the .so file, .lds has to be first $(obj)/vdso32.so.dbg: $(obj)/vdso32.lds $(obj-vdso32) $(obj)/vgettimeofday-32.o $(obj)/vgetrandom-32.o $(obj)/crtsavres-32.o FORCE $(call if_changed,vdso32ld_and_check) -$(obj)/vdso64.so.dbg: $(obj)/vdso64.lds $(obj-vdso64) $(obj)/vgettimeofday-64.o FORCE +$(obj)/vdso64.so.dbg: $(obj)/vdso64.lds $(obj-vdso64) $(obj)/vgettimeofday-64.o $(obj)/vgetrandom-64.o FORCE $(call if_changed,vdso64ld_and_check) # assembly rules for the .S files @@ -87,6 +89,8 @@ $(obj-vdso64): %-64.o: %.S FORCE $(call if_changed_dep,vdso64as) $(obj)/vgettimeofday-64.o: %-64.o: %.c FORCE $(call if_changed_dep,cc_o_c) +$(obj)/vgetrandom-64.o: %-64.o: %.c FORCE + $(call if_changed_dep,cc_o_c) # Generate VDSO offsets using helper script gen-vdso32sym := $(src)/gen_vdso32_offsets.sh |