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2e38eb04c9
linux/arch/riscv
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Naveen N. Rao 2e38eb04c9 kprobes: Do not increment probe miss count in the fault handler 
Kprobes has a counter 'nmissed', that is used to count the number of
times a probe handler was not called. This generally happens when we hit
a kprobe while handling another kprobe.

However, if one of the probe handlers causes a fault, we are currently
incrementing 'nmissed'. The comment in fault handler indicates that this
can be used to account faults taken by the probe handlers. But, this has
never been the intention as is evident from the comment above 'nmissed'
in 'struct kprobe':

	/*count the number of times this probe was temporarily disarmed */
	unsigned long nmissed;

Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Link: https://lkml.kernel.org/r/20210601120150.672652-1-naveen.n.rao@linux.vnet.ibm.com
2021-06-03 15:47:26 +02:00
..
boot RISC-V Patches for the 5.13 Merge Window, Part 1 2021-05-06 09:24:18 -07:00
configs RISC-V: Enable Microchip PolarFire ICICLE SoC 2021-04-26 08:31:32 -07:00
errata riscv: sifive: Apply errata "cip-1200" patch 2021-04-26 08:24:58 -07:00
include riscv: Consistify protect_kernel_linear_mapping_text_rodata() use 2021-05-06 09:40:15 -07:00
kernel kprobes: Do not increment probe miss count in the fault handler 2021-06-03 15:47:26 +02:00
lib riscv: Add support for function error injection 2021-01-14 15:09:09 -08:00
mm riscv: Consistify protect_kernel_linear_mapping_text_rodata() use 2021-05-06 09:40:15 -07:00
net riscv: bpf: Avoid breaking W^X 2021-04-26 08:25:14 -07:00
Kbuild riscv: Allow device trees to be built into the kernel 2020-05-18 11:38:05 -07:00
Kconfig RISC-V Patches for the 5.13 Merge Window, Part 1 2021-05-06 09:24:18 -07:00
Kconfig.debug RISC-V: Remove EARLY_PRINTK support 2018-12-17 10:23:46 -08:00
Kconfig.erratas riscv: enable SiFive errata CIP-453 and CIP-1200 Kconfig only if CONFIG_64BIT=y 2021-05-06 09:40:13 -07:00
Kconfig.socs RISC-V Patches for the 5.13 Merge Window, Part 1 2021-05-06 09:24:18 -07:00
Makefile RISC-V: enable XIP 2021-04-26 08:31:28 -07:00