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ANDROID: tracing: Add generic flag for register tracing disable

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Instead of using __KVM_NVHE_HYPERVISOR__ flag from NVHE, add generic
flag(__DISABLE_TRACE_MMIO__) for disabling register read/write tracing.
This helps to disable the tracing for a specific driver to avoid flooding
of register read/write operation logging.

For example - CFLAGS_msm_geni_serial.o := -D__DISABLE_TRACE_MMIO__

Bug: 190629271
Change-Id: Ic8e84eb84a485058d6a37cc2b495f5584c7d2b43
Signed-off-by: Prasad Sodagudi <psodagud@codeaurora.org>
This commit is contained in:
Prasad Sodagudi
2021-06-09 13:48:47 -07:00
committed by Will Deacon
parent c9b8fa644f
commit 4373261be0
2 changed files with 3 additions and 3 deletions
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2
arch/arm64/kvm/hyp/nvhe/Makefile
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@@ -4,7 +4,7 @@
#
asflags-y := -D__KVM_NVHE_HYPERVISOR__ -D__DISABLE_EXPORTS
ccflags-y := -D__KVM_NVHE_HYPERVISOR__ -D__DISABLE_EXPORTS
ccflags-y := -D__KVM_NVHE_HYPERVISOR__ -D__DISABLE_EXPORTS -D__DISABLE_TRACE_MMIO__
hostprogs := gen-hyprel
HOST_EXTRACFLAGS += -I$(objtree)/include

4
include/linux/log_mmiorw.h
View File

@@ -13,9 +13,9 @@
* TODO - io.h is included in NVHE files and these tracepoints are getting
* enabled for NVHE too. To avoid these tracepoints enabling in NHVE below
* condition is introduced.
* !(defined(__KVM_NVHE_HYPERVISOR__))
* !(defined(__DISABLE_TRACE_MMIO__))
*/
#if IS_ENABLED(CONFIG_TRACE_MMIO_ACCESS) && !(defined(__KVM_NVHE_HYPERVISOR__))
#if IS_ENABLED(CONFIG_TRACE_MMIO_ACCESS) && !(defined(__DISABLE_TRACE_MMIO__))
DECLARE_TRACEPOINT(rwmmio_write);
DECLARE_TRACEPOINT(rwmmio_read);
DECLARE_TRACEPOINT(rwmmio_post_read);