Messages in this thread | | | Date | Mon, 1 Aug 2016 08:09:57 -0700 | From | Alexei Starovoitov <> | Subject | Re: [PATCH v2] bpf: silence warnings when building kernel/bpf/core.c with W=1 |
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On Mon, Aug 01, 2016 at 01:18:43AM -0400, Valdis.Kletnieks@vt.edu wrote: > On Sun, 31 Jul 2016 21:42:22 -0700, Alexei Starovoitov said: > > > and at least 2 other such patches for other files... > > Is there a single warning where -Woverride-init was useful? > > May be worth disabling this warning for the whole build? > > There's a few other cases that *aren't* the "define the array to zero > and then build the entries from a list" form. > > In particular, there's still 3 odd complaints: > > drivers/ata/ahci.c: > drivers/ata/ahci.h:393:16: warning: initialized field overwritten [-Woverride-in > it] > .can_queue = AHCI_MAX_CMDS - 1, > > drivers/block/drbd/drbd_main.c: > drivers/block/drbd/drbd_main.c:3767:22: warning: initialized field overwritten [ > -Woverride-init] > [P_RETRY_WRITE] = "retry_write", > > arch/x86/kernel/cpu/common.c: > ./arch/x86/include/asm/page_64_types.h:22:21: warning: initialized field overwri > tten [-Woverride-init] > #define DEBUG_STKSZ (PAGE_SIZE << DEBUG_STACK_ORDER) > > The point of these patches is to make -Woverride-init *useful* - you'll never > spot 3 warnings in a flood of over 9,000 understood-and-ignored warnings. > > Get rid of the 9,000 understood-and-ignored warnings, and then things that > probably *should* be looked at can be noticed.
I don't think it makes sense to play kernel whack-a-warning in a hope that particular warning will find something useful. Please show few cases where it actually found a real issue, otherwise just disable it for all.
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