diff options
| author | Rob Herring (Arm) <[email protected]> | 2024-07-31 10:51:24 -0600 |
|---|---|---|
| committer | Will Deacon <[email protected]> | 2024-08-16 13:09:12 +0100 |
| commit | d8226d8cfbaf5eb9771af8ad8b4e58697e2ffb74 (patch) | |
| tree | dd53139085c19105c854dcdd188291e4c6baf1d8 /scripts/gdb/linux/lists.py | |
| parent | 2f62701fa5b0ee94c68d2fcfc470d08aef195441 (diff) | |
perf: arm_pmuv3: Add support for Armv9.4 PMU instruction counter
Armv9.4/8.9 PMU adds optional support for a fixed instruction counter
similar to the fixed cycle counter. Support for the feature is indicated
in the ID_AA64DFR1_EL1 register PMICNTR field. The counter is not
accessible in AArch32.
Existing userspace using direct counter access won't know how to handle
the fixed instruction counter, so we have to avoid using the counter
when user access is requested.
Acked-by: Mark Rutland <[email protected]>
Signed-off-by: Rob Herring (Arm) <[email protected]>
Tested-by: James Clark <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Will Deacon <[email protected]>
Diffstat (limited to 'scripts/gdb/linux/lists.py')
0 files changed, 0 insertions, 0 deletions