From 30093056f7b2f759ff180d3a86d29f68315e469b Mon Sep 17 00:00:00 2001 From: Ravi Bangoria Date: Tue, 15 Nov 2022 15:09:04 +0530 Subject: [PATCH] perf/amd/ibs: Make IBS a core pmu So far, only one pmu was allowed to be registered as core pmu and thus IBS pmus were being registered as uncore. However, with the event context rewrite, that limitation no longer exists and thus IBS pmus can also be registered as core pmu. This makes IBS much more usable, for ex, user will be able to do per-process precise monitoring on AMD: Before patch: $ sudo perf record -e cycles:pp ls Error: Invalid event (cycles:pp) in per-thread mode, enable system wide with '-a' After patch: $ sudo perf record -e cycles:pp ls [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.017 MB perf.data (33 samples) ] Signed-off-by: Ravi Bangoria Signed-off-by: Peter Zijlstra (Intel) Acked-by: Ian Rogers Link: https://lkml.kernel.org/r/20221115093904.1799-1-ravi.bangoria@amd.com --- arch/x86/events/amd/ibs.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/events/amd/ibs.c b/arch/x86/events/amd/ibs.c index 3271735f00702..fbc2ce86f4b81 100644 --- a/arch/x86/events/amd/ibs.c +++ b/arch/x86/events/amd/ibs.c @@ -631,7 +631,7 @@ static const struct attribute_group *op_attr_update[] = { static struct perf_ibs perf_ibs_fetch = { .pmu = { - .task_ctx_nr = perf_invalid_context, + .task_ctx_nr = perf_hw_context, .event_init = perf_ibs_init, .add = perf_ibs_add, @@ -655,7 +655,7 @@ static struct perf_ibs perf_ibs_fetch = { static struct perf_ibs perf_ibs_op = { .pmu = { - .task_ctx_nr = perf_invalid_context, + .task_ctx_nr = perf_hw_context, .event_init = perf_ibs_init, .add = perf_ibs_add, -- 2.30.2