mirror/libbpf
1
0
Fork 0
mirror of https://github.com/netdata/libbpf.git synced 2026-09-07 12:07:20 +08:00
Code Issues Packages Projects Releases Wiki Activity
2,523 Commits 29 Branches 44 Tags
09b9e83102eb8ab9e540d36b4559c55f3bcdb95d
Commit Graph
4 Commits
This Branch
This Branch
All Branches
Author SHA1 Message Date
Viktor Malik dd589c3b31 libbpf: support "module: Function" syntax for tracing programs 
In some situations, it is useful to explicitly specify a kernel module
to search for a tracing program target (e.g. when a function of the same
name exists in multiple modules or in vmlinux).

This patch enables that by allowing the "module:function" syntax for the
find_kernel_btf_id function. Thanks to this, the syntax can be used both
from a SEC macro (i.e. `SEC(fentry/module:function)`) and via the
bpf_program__set_attach_target API call.

Signed-off-by: Viktor Malik <vmalik@redhat.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/9085a8cb9a552de98e554deb22ff7e977d025440.1714469650.git.vmalik@redhat.com
 2024-05-01 15:20:15 -07:00
Viktor Malik 87695e9723 libbpf: Cleanup linker_append_elf_relos 
Clang Static Analyser (scan-build) reports some unused symbols and dead
assignments in the linker_append_elf_relos function. Clean these up.

Signed-off-by: Viktor Malik <vmalik@redhat.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/c5c8fe9f411b69afada8399d23bb048ef2a70535.1677658777.git.vmalik@redhat.com
Signed-off-by: Daniel Müller <deso@posteo.net>
 2023-03-06 09:47:37 -08:00
Viktor Malik 3706449b1b libbpf: Remove several dead assignments 
Clang Static Analyzer (scan-build) reports several dead assignments in
libbpf where the assigned value is unconditionally overridden by another
value before it is read. Remove these assignments.

Signed-off-by: Viktor Malik <vmalik@redhat.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/5503d18966583e55158471ebbb2f67374b11bf5e.1677658777.git.vmalik@redhat.com
Signed-off-by: Daniel Müller <deso@posteo.net>
 2023-03-06 09:47:37 -08:00
Viktor Malik 4c75268933 libbpf: Remove unnecessary ternary operator 
Coverity reports that the first check of 'err' in bpf_object__init_maps
is always false as 'err' is initialized to 0 at that point. Remove the
unnecessary ternary operator.

Signed-off-by: Viktor Malik <vmalik@redhat.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/78a3702f2ea9f32a84faaae9b674c56269d330a7.1677658777.git.vmalik@redhat.com
Signed-off-by: Daniel Müller <deso@posteo.net>
 2023-03-06 09:47:37 -08:00