Menglong Dong f1b56b3cbd bpf: use the least significant byte for the nr_args in trampoline ...

For now, ((u64 *)ctx)[-1] is used to store the nr_args in the trampoline.
However, 1 byte is enough to store such information. Therefore, we use
only the least significant byte of ((u64 *)ctx)[-1] to store the nr_args,
and reserve the rest for other usages.

Signed-off-by: Menglong Dong <dongml2@chinatelecom.cn>
Link: https://lore.kernel.org/r/20260124062008.8657-3-dongml2@chinatelecom.cn
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

2026-01-24 18:49:35 -08:00

..

rv

rv: Convert to use __free

2025-12-02 07:28:32 +01:00

blktrace.c

Merge tag 'trace-v6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

2025-12-05 09:51:37 -08:00

bpf_trace.c

bpf: use the least significant byte for the nr_args in trampoline

2026-01-24 18:49:35 -08:00

bpf_trace.h

tracing/treewide: Remove second parameter of __assign_str()

2024-05-22 20:14:47 -04:00

error_report-traces.c

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fgraph.c

tracing: Fix typo in fpgraph.c

2025-12-05 15:43:39 -05:00

fprobe.c

Merge tag 'trace-v6.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

2025-12-06 13:49:40 -08:00

ftrace_internal.h

function_graph: Make fgraph_update_pid_func() a stub for !DYNAMIC_FTRACE

2024-06-10 18:08:23 -04:00

ftrace.c

ftrace: Fix address for jmp mode in t_show()

2025-12-17 17:53:59 -05:00

Kconfig

Merge tag 'trace-v6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

2025-12-05 09:51:37 -08:00

kprobe_event_gen_test.c

tracing: Fix wrong return in kprobe_event_gen_test.c

2023-03-19 12:20:48 -04:00

Makefile

ftrace: Allow tracing of some of the tracing code

2025-11-26 15:13:30 -05:00

pid_list.c

trace/pid_list: optimize pid_list->lock contention

2025-11-13 15:15:54 -05:00

pid_list.h

trace/pid_list: optimize pid_list->lock contention

2025-11-13 15:15:54 -05:00

power-traces.c

PM: cpufreq: powernv/tracing: Move powernv_throttle trace event

2025-07-21 16:40:56 -04:00

preemptirq_delay_test.c

kernel: trace: preemptirq_delay_test: use offstack cpu mask

2025-07-08 18:17:38 -04:00

rethook.c

rethook: honor CONFIG_FTRACE_VALIDATE_RCU_IS_WATCHING in rethook_try_get()

2024-05-01 23:18:48 +09:00

ring_buffer_benchmark.c

tracing: Fix typo in ring_buffer_benchmark.c

2025-12-05 15:43:40 -05:00

ring_buffer.c

ring-buffer: Avoid softlockup in ring_buffer_resize() during memory free

2026-01-07 14:52:22 -05:00

rpm-traces.c

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synth_event_gen_test.c

tracing / synthetic: Disable events after testing in synth_event_gen_test_init()

2023-12-21 10:04:45 -05:00

trace_benchmark.c

tracing: Improve benchmark test performance by using do_div()

2024-05-13 20:00:57 -04:00

trace_benchmark.h

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trace_boot.c

tracing: Allow creating instances with specified system events

2023-12-18 23:14:16 -05:00

trace_branch.c

tracing: branch: Use trace_tracing_is_on_cpu() instead of "disabled" field

2025-05-09 15:19:10 -04:00

trace_btf.c

tracing/probes: Fix to search structure fields correctly

2024-02-17 21:25:42 +09:00

trace_btf.h

tracing/probes: Add a function to search a member of a struct/union

2023-08-23 09:40:16 +09:00

trace_clock.c

tracing: Use atomic64_inc_return() in trace_clock_counter()

2024-10-09 19:59:49 -04:00

trace_dynevent.c

tracing: Report wrong dynamic event command

2025-11-10 19:26:14 -05:00

trace_dynevent.h

tracing: probes: Fix a possible race in trace_probe_log APIs

2025-05-13 22:23:34 +09:00

trace_entries.h

function_graph: Enable funcgraph-args and funcgraph-retaddr to work simultaneously

2025-11-26 15:13:30 -05:00

trace_eprobe.c

Merge tag 'probes-v6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

2025-12-05 10:55:47 -08:00

trace_event_perf.c

perf: Remove unnecessary parameter of security check

2025-02-26 14:13:58 -05:00

trace_events_filter_test.h

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trace_events_filter.c

tracing: Fix typo in trace_events_filter.c

2025-12-05 15:43:40 -05:00

trace_events_hist.c

tracing: Fix typo in trace_events_hist.c

2025-12-05 15:43:40 -05:00

trace_events_inject.c

tracing: Have format file honor EVENT_FILE_FL_FREED

2024-08-07 18:12:46 -04:00

trace_events_synth.c

tracing: Fix fixed array of synthetic event

2025-12-05 15:38:10 -05:00

trace_events_trigger.c

tracing: Fix typo in trace_events_trigger.c

2025-12-05 15:43:41 -05:00

trace_events_user.c

tracing: Fix multiple typos in trace_events_user.c

2025-12-05 15:43:41 -05:00

trace_events.c

tracing: Drop unneeded assignment to soft_mode

2026-01-07 14:52:22 -05:00

trace_export.c

tracing: Add back FORTIFY_SOURCE logic to kernel_stack event structure

2023-07-30 18:11:44 -04:00

trace_fprobe.c

Merge tag 'trace-v6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

2025-12-05 09:51:37 -08:00

trace_functions_graph.c

Merge tag 'ftrace-v6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

2025-12-05 10:13:04 -08:00

trace_functions.c

tracing: Have function tracer define options per instance

2025-11-12 09:59:54 -05:00

trace_hwlat.c

tracing: Replace opencoded cpumask_next_wrap() in move_to_next_cpu()

2025-07-08 18:17:29 -04:00

trace_irqsoff.c

tracing: Allow tracer to add more than 32 options

2025-11-04 21:44:00 +09:00

trace_kdb.c

tracing: Allow tracer to add more than 32 options

2025-11-04 21:44:00 +09:00

trace_kprobe_selftest.c

tracing: arm64: Avoid missing-prototype warnings

2023-07-12 12:06:04 -04:00

trace_kprobe_selftest.h

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trace_kprobe.c

tracing: Allow tracer to add more than 32 options

2025-11-04 21:44:00 +09:00

trace_mmiotrace.c

tracing/mmiotrace: Remove reference to unused per CPU data pointer

2025-05-08 09:36:09 -04:00

trace_nop.c

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trace_osnoise.c

tracing: Fix multiple typos in trace_osnoise.c

2025-12-05 15:43:41 -05:00

trace_output.c

Merge tag 'trace-v6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

2025-12-05 09:51:37 -08:00

trace_output.h

tracing: Allow tracer to add more than 32 options

2025-11-04 21:44:00 +09:00

trace_preemptirq.c

tracing: Fix archs that still call tracepoints without RCU watching

2024-12-05 09:28:58 -05:00

trace_printk.c

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trace_probe_kernel.h

tracing/probes: Fix to record 0-length data_loc in fetch_store_string*() if fails

2023-07-14 17:04:58 +09:00

trace_probe_tmpl.h

tracing/fprobe: Enable fprobe events with CONFIG_DYNAMIC_FTRACE_WITH_ARGS

2024-12-26 10:50:04 -05:00

trace_probe.c

Merge tag 'trace-v6.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

2025-12-06 13:49:40 -08:00

trace_probe.h

tracing: probes: Use __free() for trace_probe_log

2025-11-01 01:10:28 +09:00

trace_recursion_record.c

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trace_sched_switch.c

tracing: Ensure optimized hashing works

2025-09-30 17:27:58 -04:00

trace_sched_wakeup.c

tracing: Allow tracer to add more than 32 options

2025-11-04 21:44:00 +09:00

trace_selftest_dynamic.c

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trace_selftest.c

fgraph: Pass ftrace_regs to retfunc

2024-12-26 10:50:03 -05:00

trace_seq.c

tracing: Fix typo in trace_seq.c

2025-12-05 15:43:41 -05:00

trace_stack.c

Merge tag 'trace-v6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

2025-05-29 21:04:36 -07:00

trace_stat.c

tracing: Switch trace_stat.c code over to use guard()

2024-12-26 10:38:37 -05:00

trace_stat.h

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trace_synth.h

tracing: Allow synthetic events to pass around stacktraces

2023-01-25 10:31:24 -05:00

trace_syscalls.c

tracing: Hide __NR_utimensat and _NR_mq_timedsend when not defined

2025-11-10 14:23:53 -05:00

trace_uprobe.c

tracing: uprobe: eprobes: Allocate traceprobe_parse_context per probe

2025-11-01 01:10:29 +09:00

trace.c

trace: ftrace_dump_on_oops[] is not exported, make it static

2026-01-07 14:52:22 -05:00

trace.h

Merge tag 'ftrace-v6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

2025-12-05 10:13:04 -08:00

tracing_map.c

tracing: Use vmalloc_array() to improve code

2025-09-23 09:31:58 -04:00

tracing_map.h

tracing: Remove unused extern declaration tracing_map_set_field_descr()

2023-07-23 11:08:14 -04:00