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| author |   John Garry <john.garry@huawei.com> | 2019-02-08 00:14:21 +0800 |
|---|---|---|
| committer |   Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2019-02-07 23:16:08 +0100 |
| commit | 6cafe700b08cfd261a279b9e5ed99f3a346fe3b0 (patch) | |
| tree | 92b7e05bac5867fe4e71df7bfaf835dffba8dbf1 /drivers/acpi/pptt.c | |
| parent | ACPI / tables: table override from built-in initrd (diff) | |
| download | linux-dev-6cafe700b08cfd261a279b9e5ed99f3a346fe3b0.tar.xz linux-dev-6cafe700b08cfd261a279b9e5ed99f3a346fe3b0.zip | |
ACPI/PPTT: Add acpi_pptt_warn_missing() to consolidate logs
For a system using ACPI-based FW without a PPTT, we may get many warnings
about the lack of a PPTT, as shown:
root@(none)$ dmesg | grep -i pptt
[ 0.010125] ACPI PPTT: No PPTT table found, cpu topology may be inaccurate
[ 7.138339] ACPI PPTT: No PPTT table found, cache topology may be inaccurate
[ 7.145368] ACPI PPTT: No PPTT table found, cache topology may be inaccurate
These logs are generated with pr_warn_once(), so the intention was for a
single log, but the logs overlap, so consolidate them.
Signed-off-by: John Garry <john.garry@huawei.com>
Reviewed-by: Jeremy Linton <jeremy.linton@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/pptt.c')
| -rw-r--r-- | drivers/acpi/pptt.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/acpi/pptt.c b/drivers/acpi/pptt.c index da031b1df6f5..ad31c50de3be 100644 --- a/drivers/acpi/pptt.c +++ b/drivers/acpi/pptt.c @@ -451,6 +451,11 @@ static struct acpi_pptt_processor *acpi_find_processor_package_id(struct acpi_ta return cpu; } +static void acpi_pptt_warn_missing(void) +{ + pr_warn_once("No PPTT table found, cpu and cache topology may be inaccurate\n"); +} + /** * topology_get_acpi_cpu_tag() - Find a unique topology value for a feature * @table: Pointer to the head of the PPTT table @@ -498,7 +503,7 @@ static int find_acpi_cpu_topology_tag(unsigned int cpu, int level, int flag) status = acpi_get_table(ACPI_SIG_PPTT, 0, &table); if (ACPI_FAILURE(status)) { - pr_warn_once("No PPTT table found, cpu topology may be inaccurate\n"); + acpi_pptt_warn_missing(); return -ENOENT; } retval = topology_get_acpi_cpu_tag(table, cpu, level, flag); @@ -531,7 +536,7 @@ int acpi_find_last_cache_level(unsigned int cpu) acpi_cpu_id = get_acpi_id_for_cpu(cpu); status = acpi_get_table(ACPI_SIG_PPTT, 0, &table); if (ACPI_FAILURE(status)) { - pr_warn_once("No PPTT table found, cache topology may be inaccurate\n"); + acpi_pptt_warn_missing(); } else { number_of_levels = acpi_find_cache_levels(table, acpi_cpu_id); acpi_put_table(table); @@ -563,7 +568,7 @@ int cache_setup_acpi(unsigned int cpu) status = acpi_get_table(ACPI_SIG_PPTT, 0, &table); if (ACPI_FAILURE(status)) { - pr_warn_once("No PPTT table found, cache topology may be inaccurate\n"); + acpi_pptt_warn_missing(); return -ENOENT; } @@ -617,7 +622,7 @@ int find_acpi_cpu_cache_topology(unsigned int cpu, int level) status = acpi_get_table(ACPI_SIG_PPTT, 0, &table); if (ACPI_FAILURE(status)) { - pr_warn_once("No PPTT table found, topology may be inaccurate\n"); + acpi_pptt_warn_missing(); return -ENOENT; } |