linux/include
Kumar Kartikeya Dwivedi 14c950ac2b bpf: Track verifier instruction stats for each subprogram
The verifier currently records one instruction count for the main program
and each global subprogram checked independently. Static subprograms are
explored within callers, so their verification cost cannot be reported
separately.

Track both self and inclusive instruction counts for every subprogram.
Charge each processed instruction as self work to the current subprogram and
to a path-local subtotal in its function frame. When a function returns, add
the callee subtotal to its inclusive count and to its parent subtotal. Fold
any remaining frames when a path terminates or is pruned.

Instruction subtotals are accounting state, not semantic verifier state.
Clear them when a verifier state is copied so work before a path fork is
charged once, rather than again when a saved branch is explored. If copying
a saved state fails before all frames are allocated, skip missing frames
while folding the current path.

This generic frame accounting also records self and inclusive totals when an
asynchronous callback starts as a fresh frame-zero state. It does not yet
charge that independently explored callback path back to the main or global
exploration root which scheduled it. That will be done in subsequent
changes.

This does not change the verification statistics output format. It only
prepares the counters for per-subprogram reporting.

Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://patch.msgid.link/20260812221925.3358041-2-memxor@gmail.com
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
2026-08-12 17:45:07 -07:00
..
acpi ACPI: CPPC: Check all controls for fast switching 2026-07-22 15:09:14 +02:00
asm-generic mm.git review status for mm-hotfixes-stable..mm-nonmm-stable 2026-06-21 13:20:19 -07:00
clocksource
crypto Networking changes for 7.2. 2026-06-17 08:17:00 +01:00
cxl cxl/region: Introduce devm_cxl_probe_mem() 2026-06-12 13:47:30 -07:00
drm drm-misc-fixes for v7.2-rc5: 2026-07-24 18:30:29 +10:00
dt-bindings SoC fixes for 7.2 2026-07-17 08:52:09 -07:00
hyperv mshv: fix hv_input_get_system_property struct 2026-07-22 21:58:21 +00:00
keys keys: Pin request_key_auth payload in instantiate paths 2026-06-15 15:19:13 +03:00
kunit linux_kselftest-kunit-7.2-rc1 2026-06-16 16:33:57 +05:30
kvm KVM: arm64: vgic: Fix race between LPI release and re-registration 2026-07-23 09:56:57 +01:00
linux bpf: Track verifier instruction stats for each subprogram 2026-08-12 17:45:07 -07:00
math-emu
media
memory
misc
net net/sched: reject overly deep qdisc hierarchies 2026-08-06 15:24:44 +02:00
pcmcia Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (headers) 2026-07-03 07:38:16 +02:00
ras
rdma RDMA v7.2 merge window 2026-06-18 08:16:21 -07:00
rv
scsi SCSI fixes on 20260802 2026-08-02 09:32:07 -07:00
soc soc/tegra: pmc: Fixes for v7.2 2026-07-10 14:40:52 +02:00
sound ASoC/soundwire: Intel: reset the PCMSyCM registers in hda_sdw_bpt_close 2026-07-31 13:23:10 +01:00
target
trace for-7.2-rc6-fixup-worker-tag 2026-08-06 13:29:15 -07:00
uapi Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf 7.2-rc5 2026-07-24 21:54:42 -07:00
ufs Merge branch 7.1/scsi-fixes into 7.2/scsi-staging 2026-06-15 21:01:30 -04:00
vdso
video
xen xen: Replace __ASSEMBLY__ with __ASSEMBLER__ in header files 2026-07-01 09:49:52 +02:00
Kbuild