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| author | Stafford Horne <shorne@gmail.com> | 2017-07-24 21:44:35 +0900 |
|---|---|---|
| committer | Stafford Horne <shorne@gmail.com> | 2017-11-03 14:01:15 +0900 |
| commit | eecac38b0423a69715073ecbde581dafd1abb28b (patch) | |
| tree | 6c675e769ef8a5f0fb81b4ea2dd7596be9c5aebd /arch/openrisc/Kconfig | |
| parent | 306e5e50a32140452849fff42fca104511fd6668 (diff) | |
| download | lwn-eecac38b0423a69715073ecbde581dafd1abb28b.tar.gz lwn-eecac38b0423a69715073ecbde581dafd1abb28b.zip | |
openrisc: support framepointers and STACKTRACE_SUPPORT
For lockdep support a reliable stack trace mechanism is needed. This
patch adds support in OpenRISC for the stacktrace framework, implemented
by a simple unwinder api. The unwinder api supports both framepointer
and basic stack tracing.
The unwinder is now used to replace the stack_dump() implementation as
well. The new traces are inline with other architectures trace format:
Call trace:
[<c0004448>] show_stack+0x3c/0x58
[<c031c940>] dump_stack+0xa8/0xe4
[<c0008104>] __cpu_up+0x64/0x130
[<c000d268>] bringup_cpu+0x3c/0x178
[<c000d038>] cpuhp_invoke_callback+0xa8/0x1fc
[<c000d680>] cpuhp_up_callbacks+0x44/0x14c
[<c000e400>] cpu_up+0x14c/0x1bc
[<c041da60>] smp_init+0x104/0x15c
[<c033843c>] ? kernel_init+0x0/0x140
[<c0415e04>] kernel_init_freeable+0xbc/0x25c
[<c033843c>] ? kernel_init+0x0/0x140
[<c0338458>] kernel_init+0x1c/0x140
[<c003a174>] ? schedule_tail+0x18/0xa0
[<c0006b80>] ret_from_fork+0x1c/0x9c
Signed-off-by: Stafford Horne <shorne@gmail.com>
Diffstat (limited to 'arch/openrisc/Kconfig')
| -rw-r--r-- | arch/openrisc/Kconfig | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/openrisc/Kconfig b/arch/openrisc/Kconfig index bfff04ae7f7d..399f55e82dcb 100644 --- a/arch/openrisc/Kconfig +++ b/arch/openrisc/Kconfig @@ -33,6 +33,7 @@ config OPENRISC select ARCH_USE_QUEUED_SPINLOCKS select ARCH_USE_QUEUED_RWLOCKS select OMPIC if SMP + select ARCH_WANT_FRAME_POINTERS config CPU_BIG_ENDIAN def_bool y @@ -60,6 +61,9 @@ config TRACE_IRQFLAGS_SUPPORT config GENERIC_CSUM def_bool y +config STACKTRACE_SUPPORT + def_bool y + source "init/Kconfig" source "kernel/Kconfig.freezer" |