aboutsummaryrefslogtreecommitdiff
path: root/kernel/trace
diff options
context:
space:
mode:
authorLinus Torvalds2020-06-01 13:23:59 -0700
committerLinus Torvalds2020-06-01 13:23:59 -0700
commita7092c82042b4ba3000cf7b369d1032161c5d4c9 (patch)
tree240c3b73ac4b25fcca218871f109383ed95fd52a /kernel/trace
parent69fc06f70f4569c9969f99fe25bdc9a6bb537b43 (diff)
parent5cde265384cad739b162cf08afba6da8857778bd (diff)
Merge tag 'perf-core-2020-06-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf updates from Ingo Molnar: "Kernel side changes: - Add AMD Fam17h RAPL support - Introduce CAP_PERFMON to kernel and user space - Add Zhaoxin CPU support - Misc fixes and cleanups Tooling changes: - perf record: Introduce '--switch-output-event' to use arbitrary events to be setup and read from a side band thread and, when they take place a signal be sent to the main 'perf record' thread, reusing the core for '--switch-output' to take perf.data snapshots from the ring buffer used for '--overwrite', e.g.: # perf record --overwrite -e sched:* \ --switch-output-event syscalls:*connect* \ workload will take perf.data.YYYYMMDDHHMMSS snapshots up to around the connect syscalls. Add '--num-synthesize-threads' option to control degree of parallelism of the synthesize_mmap() code which is scanning /proc/PID/task/PID/maps and can be time consuming. This mimics pre-existing behaviour in 'perf top'. - perf bench: Add a multi-threaded synthesize benchmark and kallsyms parsing benchmark. - Intel PT support: Stitch LBR records from multiple samples to get deeper backtraces, there are caveats, see the csets for details. Allow using Intel PT to synthesize callchains for regular events. Add support for synthesizing branch stacks for regular events (cycles, instructions, etc) from Intel PT data. Misc changes: - Updated perf vendor events for power9 and Coresight. - Add flamegraph.py script via 'perf flamegraph' - Misc other changes, fixes and cleanups - see the Git log for details Also, since over the last couple of years perf tooling has matured and decoupled from the kernel perf changes to a large degree, going forward Arnaldo is going to send perf tooling changes via direct pull requests" * tag 'perf-core-2020-06-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (163 commits) perf/x86/rapl: Add AMD Fam17h RAPL support perf/x86/rapl: Make perf_probe_msr() more robust and flexible perf/x86/rapl: Flip logic on default events visibility perf/x86/rapl: Refactor to share the RAPL code between Intel and AMD CPUs perf/x86/rapl: Move RAPL support to common x86 code perf/core: Replace zero-length array with flexible-array perf/x86: Replace zero-length array with flexible-array perf/x86/intel: Add more available bits for OFFCORE_RESPONSE of Intel Tremont perf/x86/rapl: Add Ice Lake RAPL support perf flamegraph: Use /bin/bash for report and record scripts perf cs-etm: Move definition of 'traceid_list' global variable from header file libsymbols kallsyms: Move hex2u64 out of header libsymbols kallsyms: Parse using io api perf bench: Add kallsyms parsing perf: cs-etm: Update to build with latest opencsd version. perf symbol: Fix kernel symbol address display perf inject: Rename perf_evsel__*() operating on 'struct evsel *' to evsel__*() perf annotate: Rename perf_evsel__*() operating on 'struct evsel *' to evsel__*() perf trace: Rename perf_evsel__*() operating on 'struct evsel *' to evsel__*() perf script: Rename perf_evsel__*() operating on 'struct evsel *' to evsel__*() ...
Diffstat (limited to 'kernel/trace')
-rw-r--r--kernel/trace/bpf_trace.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c
index a010edc37ee0..92ba69b716dc 100644
--- a/kernel/trace/bpf_trace.c
+++ b/kernel/trace/bpf_trace.c
@@ -1500,7 +1500,7 @@ int perf_event_query_prog_array(struct perf_event *event, void __user *info)
u32 *ids, prog_cnt, ids_len;
int ret;
- if (!capable(CAP_SYS_ADMIN))
+ if (!perfmon_capable())
return -EPERM;
if (event->attr.type != PERF_TYPE_TRACEPOINT)
return -EINVAL;