From: Steven Rostedt <rostedt@kernel.org>
To: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org,
bpf@vger.kernel.org, x86@kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Josh Poimboeuf <jpoimboe@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@kernel.org>, Jiri Olsa <jolsa@kernel.org>,
Namhyung Kim <namhyung@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Andrii Nakryiko <andrii@kernel.org>,
Indu Bhagat <indu.bhagat@oracle.com>,
"Jose E. Marchesi" <jemarch@gnu.org>,
Beau Belgrave <beaub@linux.microsoft.com>,
Jens Remus <jremus@linux.ibm.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
Jens Axboe <axboe@kernel.dk>, Florian Weimer <fweimer@redhat.com>,
Sam James <sam@gentoo.org>
Subject: [PATCH v13 00/11] perf: Support the deferred unwinding infrastructure
Date: Mon, 07 Jul 2025 22:00:03 -0400 [thread overview]
Message-ID: <20250708020003.565862284@kernel.org> (raw)
This is based on top of the deferred unwind core patch series:
https://lore.kernel.org/linux-trace-kernel/20250708012239.268642741@kernel.org/
git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace.git
unwind/core
This series implements the perf interface to use deferred user space stack
tracing.
The code for this series is located here:
git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace.git
unwind/perf
Changes since v12: https://lore.kernel.org/linux-trace-kernel/20250701180410.755491417@goodmis.org/
- Also check against PF_USER_WORKER as io workers do not have PF_KTHREAD
set.
- Removed deferred_request_nmi() and have NMIs just use the normal
deferred_request() function. As Peter Zijlstra has stated, in_nmi() can
nest because some exceptions set in_nmi() and another NMI could come in.
- Removed use of timestamp. The deferred unwind has gone back to using
cookies, and perf doesn't use the cookie. This means the
struct perf_callchain_deferred_event is not modified.
Head SHA1: 3d88d03d533ede8d2d513942e768607aa9279c4b
Josh Poimboeuf (5):
perf: Remove get_perf_callchain() init_nr argument
perf: Have get_perf_callchain() return NULL if crosstask and user are set
perf: Simplify get_perf_callchain() user logic
perf: Skip user unwind if the task is a kernel thread
perf: Support deferred user callchains
Namhyung Kim (4):
perf tools: Minimal CALLCHAIN_DEFERRED support
perf record: Enable defer_callchain for user callchains
perf script: Display PERF_RECORD_CALLCHAIN_DEFERRED
perf tools: Merge deferred user callchains
Steven Rostedt (2):
perf: Use current->flags & PF_KTHREAD|PF_USER_WORKER instead of current->mm == NULL
perf: Support deferred user callchains for per CPU events
----
include/linux/perf_event.h | 13 +-
include/uapi/linux/perf_event.h | 19 +-
kernel/bpf/stackmap.c | 8 +-
kernel/events/callchain.c | 49 ++--
kernel/events/core.c | 407 +++++++++++++++++++++++++++++-
tools/include/uapi/linux/perf_event.h | 19 +-
tools/lib/perf/include/perf/event.h | 7 +
tools/perf/Documentation/perf-script.txt | 5 +
tools/perf/builtin-script.c | 92 +++++++
tools/perf/util/callchain.c | 24 ++
tools/perf/util/callchain.h | 3 +
tools/perf/util/event.c | 1 +
tools/perf/util/evlist.c | 1 +
tools/perf/util/evlist.h | 1 +
tools/perf/util/evsel.c | 39 +++
tools/perf/util/evsel.h | 1 +
tools/perf/util/machine.c | 1 +
tools/perf/util/perf_event_attr_fprintf.c | 1 +
tools/perf/util/sample.h | 3 +-
tools/perf/util/session.c | 78 ++++++
tools/perf/util/tool.c | 2 +
tools/perf/util/tool.h | 4 +-
22 files changed, 742 insertions(+), 36 deletions(-)
next reply other threads:[~2025-07-08 2:00 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-08 2:00 Steven Rostedt [this message]
2025-07-08 2:00 ` [PATCH v13 01/11] perf: Remove get_perf_callchain() init_nr argument Steven Rostedt
2025-07-08 2:00 ` [PATCH v13 02/11] perf: Have get_perf_callchain() return NULL if crosstask and user are set Steven Rostedt
2025-07-08 2:00 ` [PATCH v13 03/11] perf: Use current->flags & PF_KTHREAD|PF_USER_WORKER instead of current->mm == NULL Steven Rostedt
2025-07-08 2:00 ` [PATCH v13 04/11] perf: Simplify get_perf_callchain() user logic Steven Rostedt
2025-07-08 2:00 ` [PATCH v13 05/11] perf: Skip user unwind if the task is a kernel thread Steven Rostedt
2025-07-08 2:00 ` [PATCH v13 06/11] perf: Support deferred user callchains Steven Rostedt
2025-07-08 2:00 ` [PATCH v13 07/11] perf: Support deferred user callchains for per CPU events Steven Rostedt
2025-07-08 2:00 ` [PATCH v13 08/11] perf tools: Minimal CALLCHAIN_DEFERRED support Steven Rostedt
2025-07-08 2:00 ` [PATCH v13 09/11] perf record: Enable defer_callchain for user callchains Steven Rostedt
2025-07-08 2:00 ` [PATCH v13 10/11] perf script: Display PERF_RECORD_CALLCHAIN_DEFERRED Steven Rostedt
2025-07-08 2:00 ` [PATCH v13 11/11] perf tools: Merge deferred user callchains Steven Rostedt
2025-07-11 20:26 ` [PATCH v13 00/11] perf: Support the deferred unwinding infrastructure Namhyung Kim
2025-07-11 20:56 ` Steven Rostedt
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