perf tp_pmu: Add event APIs

2025-07-26T23:31:43+00:00

Add event APIs for the tracepoint PMU allowing things like perf list to function using it. For perf list add the tracepoint format in the long description (shown with -v). $ sudo perf list -v tracepoint List of pre-defined events (to be used in -e or -M): alarmtimer:alarmtimer_cancel [Tracepoint event] [name: alarmtimer_cancel ID: 416 format: field:unsigned short common_type; offset:0; size:2; signed:0; field:unsigned char common_flags; offset:2; size:1; signed:0; field:unsigned char common_preempt_count; offset:3; size:1; signed:0; field:int common_pid; offset:4; size:4; signed:1; field:void * alarm; offset:8; size:8; signed:0; field:unsigned char alarm_type; offset:16; size:1; signed:0; field:s64 expires; offset:24; size:8; signed:1; field:s64 now; offset:32; size:8; signed:1; print fmt: "alarmtimer:%p type:%s expires:%llu now:%llu",REC->alarm,__print_flags((1 << REC->alarm_type)," | ",{ 1 << 0, "REALTIME" },{ 1 << 1,"BOOTTIME" },{ 1 << 3,"REALTIME Freezer" },{ 1 << 4,"BOOTTIME Freezer" }),REC->expires,REC->now . Unit: tracepoint] alarmtimer:alarmtimer_fired [Tracepoint event] [name: alarmtimer_fired ID: 418 ... Signed-off-by: Ian Rogers Tested-by: Arnaldo Carvalho de Melo Link: https://lore.kernel.org/r/20250725185202.68671-6-irogers@google.com Signed-off-by: Namhyung Kim

perf tp_pmu: Factor existing tracepoint logic to new file

2025-07-26T23:31:43+00:00

Start the creation of a tracepoint PMU abstraction. Tracepoint events don't follow the regular sysfs perf conventions. Eventually the new PMU abstraction will bridge the gap so tracepoint events look more like regular perf ones. Signed-off-by: Ian Rogers Tested-by: Arnaldo Carvalho de Melo Link: https://lore.kernel.org/r/20250725185202.68671-5-irogers@google.com Signed-off-by: Namhyung Kim

starfive-tech/linux.git/tools/perf/util/tp_pmu.c, branch visionfive

perf tp_pmu: Add event APIs

perf tp_pmu: Factor existing tracepoint logic to new file