diff options
| author | Dhananjay Ugwekar <dhananjay.ugwekar@amd.com> | 2025-01-29 11:05:14 +0300 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2025-02-08 17:47:25 +0300 |
| commit | 469c76a83bb9f6b2c7b2989c46617c4fe01fee79 (patch) | |
| tree | 39c774334fda0c5dff7105c3f557f87116d6d6cc /scripts/extract-fwblobs | |
| parent | 2014c95afecee3e76ca4a56956a936e23283f05b (diff) | |
| download | linux-469c76a83bb9f6b2c7b2989c46617c4fe01fee79.tar.xz | |
perf/x86/rapl: Fix the error checking order
After the commit b4943b8bfc41 ("perf/x86/rapl: Add core energy counter
support for AMD CPUs"), the default "perf record"/"perf top" command is
broken in systems where there isn't a PMU registered for type
PERF_TYPE_RAW.
This is due to the change in order of error checks in rapl_pmu_event_init()
Due to which we return -EINVAL instead of -ENOENT, when we reach here from
the fallback loop in perf_init_event().
Move the "PMU and event type match" back to the beginning of the function
so that we return -ENOENT early on.
Closes: https://lore.kernel.org/all/uv7mz6vew2bzgre5jdpmwldxljp5djzmuiksqdcdwipfm4zm7w@ribobcretidk/
Fixes: b4943b8bfc41 ("perf/x86/rapl: Add core energy counter support for AMD CPUs")
Reported-by: Koichiro Den <koichiro.den@canonical.com>
Signed-off-by: Dhananjay Ugwekar <dhananjay.ugwekar@amd.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20250129080513.30353-1-dhananjay.ugwekar@amd.com
Diffstat (limited to 'scripts/extract-fwblobs')
0 files changed, 0 insertions, 0 deletions