AcoSail/kernel_optimize_test
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70927d02d4
kernel_optimize_test/arch/arm64
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Mark Rutland 70927d02d4 arm64: ftrace: fix ifdeffery 
When I tweaked the ftrace entry assembly in commit:

  3b23e4991f ("arm64: implement ftrace with regs")

... my ifdeffery tweaks left ftrace_graph_caller undefined for
CONFIG_DYNAMIC_FTRACE && CONFIG_FUNCTION_GRAPH_TRACER when ftrace is
based on mcount.

The kbuild test robot reported that this issue is detected at link time:

| arch/arm64/kernel/entry-ftrace.o: In function `skip_ftrace_call':
| arch/arm64/kernel/entry-ftrace.S:238: undefined reference to `ftrace_graph_caller'
| arch/arm64/kernel/entry-ftrace.S:238:(.text+0x3c): relocation truncated to fit: R_AARCH64_CONDBR19 against undefined symbol
| `ftrace_graph_caller'
| arch/arm64/kernel/entry-ftrace.S:243: undefined reference to `ftrace_graph_caller'
| arch/arm64/kernel/entry-ftrace.S:243:(.text+0x54): relocation truncated to fit: R_AARCH64_CONDBR19 against undefined symbol
| `ftrace_graph_caller'

This patch fixes the ifdeffery so that the mcount version of
ftrace_graph_caller doesn't depend on CONFIG_DYNAMIC_FTRACE. At the same
time, a redundant #else is removed from the ifdeffery for the
patchable-function-entry version of ftrace_graph_caller.

Fixes: 3b23e4991f ("arm64: implement ftrace with regs")
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Amit Daniel Kachhap <amit.kachhap@arm.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Torsten Duwe <duwe@lst.de>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2019-12-06 13:25:14 +00:00
..
boot ARM: dts: sunxi: Revert phy-names removal for ECHI and OHCI 2019-10-04 14:37:03 +02:00
configs arm64/ARM: configs: Change CONFIG_REMOTEPROC from m to y 2019-09-30 11:48:00 -07:00
crypto crypto: arm64/aes-neonbs - implement ciphertext stealing for XTS 2019-09-09 17:35:39 +10:00
include arm64: KVM: Invoke compute_layout() before alternatives are applied 2019-12-06 12:14:45 +00:00
kernel arm64: ftrace: fix ifdeffery 2019-12-06 13:25:14 +00:00
kvm arm64: KVM: Invoke compute_layout() before alternatives are applied 2019-12-06 12:14:45 +00:00
lib Merge branch 'for-next/atomics' into for-next/core 2019-08-30 12:55:39 +01:00
mm arm64: mm: Fix column alignment for UXN in kernel_page_tables 2019-12-04 11:44:29 +00:00
net arm64: bpf: optimize modulo operation 2019-09-03 15:44:40 +02:00
xen xen/efi: have a common runtime setup function 2019-10-02 10:31:07 -04:00
Kbuild arm64: add arch/arm64/Kbuild 2019-08-21 18:47:15 +01:00
Kconfig arm64: Kconfig: add a choice for endianness 2019-11-14 14:39:03 +00:00
Kconfig.debug
Kconfig.platforms arm64: exynos: Enable exynos-chipid driver 2019-09-04 22:43:26 +02:00
Makefile arm64: implement ftrace with regs 2019-11-06 14:17:35 +00:00