From e147133a42cb9df6cbc99503fdf58d0e6388bf2a Mon Sep 17 00:00:00 2001 From: James Morse Date: Tue, 29 Jan 2019 18:48:40 +0000 Subject: ACPI / APEI: Make hest.c manage the estatus memory pool ghes.c has a memory pool it uses for the estatus cache and the estatus queue. The cache is initialised when registering the platform driver. For the queue, an NMI-like notification has to grow/shrink the pool as it is registered and unregistered. This is all pretty noisy when adding new NMI-like notifications, it would be better to replace this with a static pool size based on the number of users. As a precursor, move the call that creates the pool from ghes_init(), into hest.c. Later this will take the number of ghes entries and consolidate the queue allocations. Remove ghes_estatus_pool_exit() as hest.c doesn't have anywhere to put this. The pool is now initialised as part of ACPI's subsys_initcall(): (acpi_init(), acpi_scan_init(), acpi_pci_root_init(), acpi_hest_init()) Before this patch it happened later as a GHES specific device_initcall(). Signed-off-by: James Morse Reviewed-by: Borislav Petkov Signed-off-by: Rafael J. Wysocki --- drivers/acpi/apei/ghes.c | 33 ++++++--------------------------- drivers/acpi/apei/hest.c | 10 +++++++++- 2 files changed, 15 insertions(+), 28 deletions(-) (limited to 'drivers/acpi/apei') diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c index ee9206d5e119..4150c72c78cb 100644 --- a/drivers/acpi/apei/ghes.c +++ b/drivers/acpi/apei/ghes.c @@ -162,26 +162,16 @@ static void ghes_iounmap_irq(void) clear_fixmap(FIX_APEI_GHES_IRQ); } -static int ghes_estatus_pool_init(void) +static int ghes_estatus_pool_expand(unsigned long len); //temporary + +int ghes_estatus_pool_init(void) { ghes_estatus_pool = gen_pool_create(GHES_ESTATUS_POOL_MIN_ALLOC_ORDER, -1); if (!ghes_estatus_pool) return -ENOMEM; - return 0; -} -static void ghes_estatus_pool_free_chunk(struct gen_pool *pool, - struct gen_pool_chunk *chunk, - void *data) -{ - vfree((void *)chunk->start_addr); -} - -static void ghes_estatus_pool_exit(void) -{ - gen_pool_for_each_chunk(ghes_estatus_pool, - ghes_estatus_pool_free_chunk, NULL); - gen_pool_destroy(ghes_estatus_pool); + return ghes_estatus_pool_expand(GHES_ESTATUS_CACHE_AVG_SIZE * + GHES_ESTATUS_CACHE_ALLOCED_MAX); } static int ghes_estatus_pool_expand(unsigned long len) @@ -1227,18 +1217,9 @@ static int __init ghes_init(void) ghes_nmi_init_cxt(); - rc = ghes_estatus_pool_init(); - if (rc) - goto err; - - rc = ghes_estatus_pool_expand(GHES_ESTATUS_CACHE_AVG_SIZE * - GHES_ESTATUS_CACHE_ALLOCED_MAX); - if (rc) - goto err_pool_exit; - rc = platform_driver_register(&ghes_platform_driver); if (rc) - goto err_pool_exit; + goto err; rc = apei_osc_setup(); if (rc == 0 && osc_sb_apei_support_acked) @@ -1251,8 +1232,6 @@ static int __init ghes_init(void) pr_info(GHES_PFX "Failed to enable APEI firmware first mode.\n"); return 0; -err_pool_exit: - ghes_estatus_pool_exit(); err: return rc; } diff --git a/drivers/acpi/apei/hest.c b/drivers/acpi/apei/hest.c index 0935a0ef37e5..e33bfd9d256c 100644 --- a/drivers/acpi/apei/hest.c +++ b/drivers/acpi/apei/hest.c @@ -32,6 +32,7 @@ #include #include #include +#include #include "apei-internal.h" @@ -209,6 +210,11 @@ static int __init hest_ghes_dev_register(unsigned int ghes_count) rc = apei_hest_parse(hest_parse_ghes, &ghes_arr); if (rc) goto err; + + rc = ghes_estatus_pool_init(); + if (rc) + goto err; + out: kfree(ghes_arr.ghes_devs); return rc; @@ -257,7 +263,9 @@ void __init acpi_hest_init(void) rc = apei_hest_parse(hest_parse_ghes_count, &ghes_count); if (rc) goto err; - rc = hest_ghes_dev_register(ghes_count); + + if (ghes_count) + rc = hest_ghes_dev_register(ghes_count); if (rc) goto err; } -- cgit v1.2.3