在 2020年08月18日 14:46, HAGIO KAZUHITO(萩尾 一仁) 写道:
> On kernels that contain commit 9df872faa7e1 ("genirq: Move field
> 'affinity' from irq_data into irq_common_data"), without the patch,
> the "irq -a" option cannot work with the message "irq: -a option not
> supported or applicable on this architecture or kernel".
>
> Signed-off-by: Kazuhito Hagio <k-hagio...@nec.com>
> ---
> defs.h | 3 +++
> kernel.c | 18 +++++++++++++-----
> symbols.c | 5 +++++
> 3 files changed, 21 insertions(+), 5 deletions(-)
>
> diff --git a/defs.h b/defs.h
> index 17e98763362b..ad91bfe184fc 100644
> --- a/defs.h
> +++ b/defs.h
> @@ -2089,6 +2089,8 @@ struct offset_table { /* stash of
> commonly-used offsets */
> long size_class_size;
> long gendisk_private_data;
> long zram_table_entry;
> + long irq_common_data_affinity;
> + long irq_desc_irq_common_data;
> };
>
> struct size_table { /* stash of commonly-used sizes */
> @@ -2247,6 +2249,7 @@ struct size_table { /* stash of commonly-used
> sizes */
> long xarray;
> long xa_node;
> long zram_table_entry;
> + long irq_common_data;
> };
>
> struct array_table {
> diff --git a/kernel.c b/kernel.c
> index 5ed602108b87..15f9ab4b8449 100644
> --- a/kernel.c
> +++ b/kernel.c
> @@ -550,6 +550,12 @@ kernel_init()
> MEMBER_OFFSET_INIT(irq_desc_irq_data, "irq_desc", "irq_data");
> }
>
> + STRUCT_SIZE_INIT(irq_common_data, "irq_common_data");
> + if (VALID_STRUCT(irq_common_data)) {
> + MEMBER_OFFSET_INIT(irq_common_data_affinity, "irq_common_data",
> "affinity");
> + MEMBER_OFFSET_INIT(irq_desc_irq_common_data, "irq_desc",
> "irq_common_data");
> + }
> +
> STRUCT_SIZE_INIT(irq_cpustat_t, "irq_cpustat_t");
> MEMBER_OFFSET_INIT(irq_cpustat_t___softirq_active,
> "irq_cpustat_t", "__softirq_active");
> @@ -6331,10 +6337,9 @@ cmd_irq(void)
> if (!machdep->get_irq_affinity)
> option_not_supported(c);
>
> - if (VALID_STRUCT(irq_data)) {
> - if (INVALID_MEMBER(irq_data_affinity))
> - option_not_supported(c);
> - } else if (INVALID_MEMBER(irq_desc_t_affinity))
> + if (INVALID_MEMBER(irq_data_affinity) &&
> + INVALID_MEMBER(irq_common_data_affinity) &&
> + INVALID_MEMBER(irq_desc_t_affinity))
> option_not_supported(c);
>
> if ((nr_irqs = machdep->nr_irqs) == 0)
> @@ -7096,7 +7101,10 @@ generic_get_irq_affinity(int irq)
> len = DIV_ROUND_UP(kt->cpus, BITS_PER_LONG) * sizeof(ulong);
>
> affinity = (ulong *)GETBUF(len);
> - if (VALID_STRUCT(irq_data))
> + if (VALID_MEMBER(irq_common_data_affinity))
> + tmp_addr = irq_desc_addr + OFFSET(irq_desc_irq_common_data)
> + + OFFSET(irq_common_data_affinity);
> + else if (VALID_MEMBER(irq_data_affinity))
> tmp_addr = irq_desc_addr + \
> OFFSET(irq_data_affinity);
> else
> diff --git a/symbols.c b/symbols.c
> index 2fecaee093a2..d18c88f2f3b0 100644
> --- a/symbols.c
> +++ b/symbols.c
> @@ -9310,8 +9310,12 @@ dump_offset_table(char *spec, ulong makestruct)
> OFFSET(irq_data_chip));
> fprintf(fp, " irq_data_affinity: %ld\n",
> OFFSET(irq_data_affinity));
> + fprintf(fp, " irq_common_data_affinity: %ld\n",
> + OFFSET(irq_common_data_affinity));
> fprintf(fp, " irq_desc_irq_data: %ld\n",
> OFFSET(irq_desc_irq_data));
> + fprintf(fp, " irq_desc_irq_common_data: %ld\n",
> + OFFSET(irq_desc_irq_common_data));
> fprintf(fp, " kernel_stat_irqs: %ld\n",
> OFFSET(kernel_stat_irqs));
>
> @@ -10663,6 +10667,7 @@ dump_offset_table(char *spec, ulong makestruct)
> fprintf(fp, " runqueue: %ld\n", SIZE(runqueue));
> fprintf(fp, " irq_desc_t: %ld\n", SIZE(irq_desc_t));
> fprintf(fp, " irq_data: %ld\n", SIZE(irq_data));
> + fprintf(fp, " irq_common_data: %ld\n",
> SIZE(irq_common_data));
> fprintf(fp, " task_union: %ld\n", SIZE(task_union));
> fprintf(fp, " thread_union: %ld\n",
> SIZE(thread_union));
> fprintf(fp, " prio_array: %ld\n", SIZE(prio_array));
>
It looks good to me. Thank you for the patch.
Acked-by: Lianbo Jiang <liji...@redhat.com>
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