Re: [PATCH 03/12] mce-severity: cleanup severity table

Borislav Petkov
2011-05-27T06:46:52Z

On Fri, May 27, 2011 at 01:05:14PM +0900, Hidetoshi Seto wrote:
> Current format of item in this table is:
> condition(param, ..., level, message [, condition2 ...])
>
> So we have to check both of head and tail of the item to know
> conditions to match the item.
>
> Make them in straight forward form:
> item(level, message, condition [, condition2 ...])
>
> Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
> ---
> arch/x86/kernel/cpu/mcheck/mce-severity.c | 127 +++++++++++++----------------
> 1 files changed, 58 insertions(+), 69 deletions(-)
>
> diff --git a/arch/x86/kernel/cpu/mcheck/mce-severity.c b/arch/x86/kernel/cpu/mcheck/mce-severity.c
> index eaf5a43..b797913 100644
> --- a/arch/x86/kernel/cpu/mcheck/mce-severity.c
> +++ b/arch/x86/kernel/cpu/mcheck/mce-severity.c
> @@ -43,116 +43,105 @@ static struct severity {
> unsigned char covered;
> char *msg;
> } severities[] = {
> -#define KERNEL .context = IN_KERNEL
> -#define USER .context = IN_USER
> -#define SER .ser = SER_REQUIRED
> -#define NOSER .ser = NO_SER
> -#define SEV(s) .sev = MCE_ ## s ## _SEVERITY
> -#define BITCLR(x, s, m, r...) { .mask = x, .result = 0, SEV(s), .msg = m, ## r }
> -#define BITSET(x, s, m, r...) { .mask = x, .result = x, SEV(s), .msg = m, ## r }
> -#define MCGMASK(x, res, s, m, r...) \
> - { .mcgmask = x, .mcgres = res, SEV(s), .msg = m, ## r }
> -#define MASK(x, y, s, m, r...) \
> - { .mask = x, .result = y, SEV(s), .msg = m, ## r }
> +#define MCESEV(s, m, c...) { .sev = MCE_ ## s ## _SEVERITY, .msg = m, ## c }
> +#define KERNEL .context = IN_KERNEL
> +#define USER .context = IN_USER
> +#define SER .ser = SER_REQUIRED
> +#define NOSER .ser = NO_SER
> +#define BITCLR(x) .mask = x, .result = 0
> +#define BITSET(x) .mask = x, .result = x
> +#define MCGMASK(x, y) .mcgmask = x, .mcgres = y
> +#define MASK(x, y) .mask = x, .result = y
> #define MCI_UC_S (MCI_STATUS_UC|MCI_STATUS_S)
> #define MCI_UC_SAR (MCI_STATUS_UC|MCI_STATUS_S|MCI_STATUS_AR)
> #define MCACOD 0xffff
>
> - BITCLR(
> - MCI_STATUS_VAL,
> - NO, "Invalid"
> + MCESEV(
> + NO, "Invalid",
> + BITCLR(MCI_STATUS_VAL)
> ),
> - BITCLR(
> - MCI_STATUS_EN,
> - NO, "Not enabled"
> + MCESEV(
> + NO, "Not enabled",
> + BITCLR(MCI_STATUS_EN)
> ),
> - BITSET(
> - MCI_STATUS_PCC,
> - PANIC, "Processor context corrupt"
> + MCESEV(
> + PANIC, "Processor context corrupt",
> + BITSET(MCI_STATUS_PCC)
> ),

I'm still wondering whether using the gcc struct assignment syntax could
make those much more readable instead of changing the macro inclusion:

{
.sev = MCE_PANIC_SEVERITY,
.msg = "Processor context corrupt",
.mask = MCI_STATUS_PCC,
.result = MCI_STATUS_PCC,
},
...

I dunno, I have to say, I can read those better instead of eyeballing
the macros all the time to wonder which was it, was it a bitset or a
bitclr, or a mcg mask...

> /* When MCIP is not set something is very confused */
> - MCGMASK(
> - MCG_STATUS_MCIP, 0,
> - PANIC, "MCIP not set in MCA handler"
> + MCESEV(
> + PANIC, "MCIP not set in MCA handler",
> + MCGMASK(MCG_STATUS_MCIP, 0)
> ),
> /* Neither return not error IP -- no chance to recover -> PANIC */
> - MCGMASK(
> - MCG_STATUS_RIPV|MCG_STATUS_EIPV, 0,
> - PANIC, "Neither restart nor error IP"
> + MCESEV(
> + PANIC, "Neither restart nor error IP",
> + MCGMASK(MCG_STATUS_RIPV|MCG_STATUS_EIPV, 0)
> ),
> - MCGMASK(
> - MCG_STATUS_RIPV, 0,
> + MCESEV(
> PANIC, "In kernel and no restart IP",
> - KERNEL
> + KERNEL, MCGMASK(MCG_STATUS_RIPV, 0)
> ),
> - BITCLR(
> - MCI_STATUS_UC,
> + MCESEV(
> KEEP, "Corrected error",
> - NOSER
> + NOSER, BITCLR(MCI_STATUS_UC)
> ),
>
> /* ignore OVER for UCNA */
> - MASK(
> - MCI_UC_SAR, MCI_STATUS_UC,
> + MCESEV(
> KEEP, "Uncorrected no action required",
> - SER
> + SER, MASK(MCI_UC_SAR, MCI_STATUS_UC)
> ),
> - MASK(
> - MCI_STATUS_OVER|MCI_UC_SAR, MCI_STATUS_UC|MCI_STATUS_AR,
> + MCESEV(
> PANIC, "Illegal combination (UCNA with AR=1)",
> - SER
> + SER,
> + MASK(MCI_STATUS_OVER|MCI_UC_SAR, MCI_STATUS_UC|MCI_STATUS_AR)
> ),
> - MASK(
> - MCI_STATUS_S, 0,
> + MCESEV(
> KEEP, "Non signalled machine check",
> - SER
> + SER, MASK(MCI_STATUS_S, 0)
> ),
>
> /* AR add known MCACODs here */
> - MASK(
> - MCI_STATUS_OVER|MCI_UC_SAR, MCI_STATUS_OVER|MCI_UC_SAR,
> + MCESEV(
> PANIC, "Action required with lost events",
> - SER
> + SER,
> + MASK(MCI_STATUS_OVER|MCI_UC_SAR, MCI_STATUS_OVER|MCI_UC_SAR)
> ),
> - MASK(
> - MCI_STATUS_OVER|MCI_UC_SAR, MCI_UC_SAR,
> + MCESEV(
> PANIC, "Action required; unknown MCACOD",
> - SER
> + SER, MASK(MCI_STATUS_OVER|MCI_UC_SAR, MCI_UC_SAR)
> ),
>
> /* known AO MCACODs: */
> - MASK(
> - MCI_UC_SAR|MCI_STATUS_OVER|0xfff0, MCI_UC_S|0xc0,
> + MCESEV(
> AO, "Action optional: memory scrubbing error",
> - SER
> + SER, MASK(MCI_STATUS_OVER|MCI_UC_SAR|0xfff0, MCI_UC_S|0xc0)
> ),
> - MASK(
> - MCI_UC_SAR|MCI_STATUS_OVER|MCACOD, MCI_UC_S|0x17a,
> + MCESEV(
> AO, "Action optional: last level cache writeback error",
> - SER
> + SER, MASK(MCI_STATUS_OVER|MCI_UC_SAR|MCACOD, MCI_UC_S|0x17a)
> ),
> -
> - MASK(
> - MCI_STATUS_OVER|MCI_UC_SAR, MCI_UC_S,
> + MCESEV(
> SOME, "Action optional unknown MCACOD",
> - SER
> + SER, MASK(MCI_STATUS_OVER|MCI_UC_SAR, MCI_UC_S)
> ),
> - MASK(
> - MCI_STATUS_OVER|MCI_UC_SAR, MCI_UC_S|MCI_STATUS_OVER,
> + MCESEV(
> SOME, "Action optional with lost events",
> - SER
> + SER, MASK(MCI_STATUS_OVER|MCI_UC_SAR, MCI_UC_S|MCI_STATUS_OVER)
> ),
> - BITSET(
> - MCI_STATUS_UC|MCI_STATUS_OVER,
> - PANIC, "Overflowed uncorrected"
> +
> + MCESEV(
> + PANIC, "Overflowed uncorrected",
> + BITSET(MCI_STATUS_OVER|MCI_STATUS_UC)
> ),
> - BITSET(
> - MCI_STATUS_UC,
> - UC, "Uncorrected"
> + MCESEV(
> + UC, "Uncorrected",
> + BITSET(MCI_STATUS_UC)
> ),
> - BITSET(
> - 0,
> - SOME, "No match"
> + MCESEV(
> + SOME, "No match",
> + BITSET(0)
> ) /* always matches. keep at end */
> };
>
> --
> 1.7.1
>
>
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--
Regards/Gruss,
Boris.