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SubjectRe: [PATCHv3 0/8] hw_breakpoint: Breakpoint modification fixes and new modify ioctl

* Jiri Olsa <jolsa@kernel.org> wrote:

> Jiri Olsa (7):
> hw_breakpoint: Pass bp_type directly as find_slot_idx argument
> hw_breakpoint: Pass bp_type argument to __reserve_bp_slot|__release_bp_slot
> hw_breakpoint: Add modify_bp_slot function
> hw_breakpoint: Factor out __modify_user_hw_breakpoint function
> hw_breakpoint: Add perf_event_attr fields check in __modify_user_hw_breakpoint
> perf/core: Move perf_event_attr::sample_max_stack into perf_copy_attr
> perf tests: Add breakpoint accounting/modify test
>
> Milind Chabbi (1):
> perf/core: fast breakpoint modification via _IOC_MODIFY_ATTRIBUTES.
>
> include/linux/hw_breakpoint.h | 7 +++++
> include/uapi/linux/perf_event.h | 23 ++++++++-------
> kernel/events/core.c | 54 ++++++++++++++++++++++++++++++++--
> kernel/events/hw_breakpoint.c | 115 +++++++++++++++++++++++++++++++++++++++++++++++++++---------------------
> tools/include/uapi/linux/perf_event.h | 23 ++++++++-------
> tools/perf/tests/Build | 1 +
> tools/perf/tests/bp_account.c | 195 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> tools/perf/tests/builtin-test.c | 4 +++
> tools/perf/tests/tests.h | 1 +
> 9 files changed, 365 insertions(+), 58 deletions(-)
> create mode 100644 tools/perf/tests/bp_account.c

Note, there's a new PARISC build failure:

home/mingo/tip/kernel/events/core.c:2858:2: error: implicit declaration of function 'modify_user_hw_breakpoint_check' [-Werror=implicit-function-declaration]
err = modify_user_hw_breakpoint_check(bp, attr, true);

will only be able to push it out to -next once this is fixed.

Thanks,

Ingo

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