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| author | Tiezhu Yang <yangtiezhu@loongson.cn> | 2021-02-04 11:35:22 +0800 |
|---|---|---|
| committer | Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 2021-02-04 21:55:45 +0100 |
| commit | 1ddc96bd42daeeb58f66c9515e506f245ccb00c6 (patch) | |
| tree | b3f0028730f0feb0f47e209d84f53739baa16a1a /arch/mips/Kconfig | |
| parent | c87bc737220adc4627f191a5e4ed5068aabc24a1 (diff) | |
| download | linux-1ddc96bd42daeeb58f66c9515e506f245ccb00c6.tar.bz2 | |
MIPS: kernel: Support extracting off-line stack traces from user-space with perf
Add perf_event_mips_regs/perf_reg_value/perf_reg_validate to support
features HAVE_PERF_REGS/HAVE_PERF_USER_STACK_DUMP in kernel.
[ayan@wavecomp.com: Repick this patch for unwinding userstack backtrace
by perf and libunwind on MIPS based CPU.]
[ralf@linux-mips.org: Add perf_get_regs_user() which is required after
'commit 88a7c26af8da ("perf: Move task_pt_regs sampling into arch code")'.]
[yangtiezhu@loongson.cn: Fix build error about perf_get_regs_user() after
commit 76a4efa80900 ("perf/arch: Remove perf_sample_data::regs_user_copy"),
and also separate the original patches into two parts (MIPS kernel and perf
tools) to merge easily.]
The original patches:
https://lore.kernel.org/patchwork/patch/1126521/
https://lore.kernel.org/patchwork/patch/1126520/
Signed-off-by: David Daney <david.daney@cavium.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Archer Yan <ayan@wavecomp.com>
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Diffstat (limited to 'arch/mips/Kconfig')
| -rw-r--r-- | arch/mips/Kconfig | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 71df230d9c54..57b06798706c 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -77,6 +77,8 @@ config MIPS select HAVE_NMI select HAVE_OPROFILE select HAVE_PERF_EVENTS + select HAVE_PERF_REGS + select HAVE_PERF_USER_STACK_DUMP select HAVE_REGS_AND_STACK_ACCESS_API select HAVE_RSEQ select HAVE_SPARSE_SYSCALL_NR |