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| author |   Thorsten Blum <thorsten.blum@linux.dev> | 2025-04-13 12:41:09 +0200 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2025-04-13 21:05:50 +0200 |
| commit | 5c3627b6f0595f1ec27e6f5df903bd072e9b9136 (patch) | |
| tree | b6077062e310ba46150e5aee35f2895fd7c4d7f9 | |
| parent | perf/arch: Record sample last_period before updating on the x86 and PowerPC platforms (diff) | |
| download | wireguard-linux-5c3627b6f0595f1ec27e6f5df903bd072e9b9136.tar.xz wireguard-linux-5c3627b6f0595f1ec27e6f5df903bd072e9b9136.zip | |
perf/x86/intel/bts: Replace offsetof() with struct_size()
Use struct_size() to calculate the number of bytes to allocate for a new
bts_buffer. Compared to offsetof(), struct_size() provides additional
compile-time checks (e.g., __must_be_array()).
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20250413104108.49142-2-thorsten.blum@linux.dev
| -rw-r--r-- | arch/x86/events/intel/bts.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/events/intel/bts.c b/arch/x86/events/intel/bts.c index da03f53bfa18..16bc89c8023b 100644 --- a/arch/x86/events/intel/bts.c +++ b/arch/x86/events/intel/bts.c @@ -101,7 +101,7 @@ bts_buffer_setup_aux(struct perf_event *event, void **pages, if (overwrite && nr_buf > 1) return NULL; - bb = kzalloc_node(offsetof(struct bts_buffer, buf[nr_buf]), GFP_KERNEL, node); + bb = kzalloc_node(struct_size(bb, buf, nr_buf), GFP_KERNEL, node); if (!bb) return NULL; |