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b=On4DAleEvzEblzRF0MfZsJJfDsA5lc6a6VvbWctwBhhMaR7JRPPqOwfKLyoKtTl2T aONJzcB/oXaoUjqOxrTAojdkxjdwWOULDFXcC0Mw2KmVFLKWiaVV+sca6oTM+BBY+N Q1XYQYzacmH6KI9j8AB3l1VApf6Vm+oeQ3bMs73ZGkkXbyhFJFeWa5bWFg+5dHH4N3 vcNSrxC6u6TGv+CPF5bTImH82jucZWOUcycziOI6/d6BSuHxXT3MmP2P/sIrLEarVW 719+xYSRV+31RrlCvNdc9mNSoJsJAuvrJqCUWkbAdJWDBZHEAMjnOcmnvoWXxHVqia zZXP712hKTrtQ== From: SeongJae Park To: Andrew Morton Cc: SeongJae Park , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 4/7] mm/damon/core: remove damon_set_region_biggest_system_ram_default() Date: Tue, 28 Apr 2026 21:12:26 -0700 Message-ID: <20260429041232.90257-5-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260429041232.90257-1-sj@kernel.org> References: <20260429041232.90257-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Stat-Signature: 8as5jzu8usx5iwkff8to6uqypmdzmunb X-Rspam-User: X-Rspamd-Queue-Id: 56C5A1C0008 X-Rspamd-Server: rspam07 X-HE-Tag: 1777435959-33496 X-HE-Meta: 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 llqaXGcO jB/h+99BfquMCKENw4zBtPG5CF8YCTj586bXwGDxMznSUi06ySJau8LawCHhnYPaKZGtb//5/TF59olcFp1rFRdTzbIIAxAXjTI7Q+F9kpHWaJrFqKDl38EKVNo5uILM9JKNw0omxHk1smEVNbnvyDbDCbakr48+PO99ECygvRRNfzPomi3wZ/hWLpY1uLbgJyM8xHEmgJgNjU2ZJ40NjYkjsDPDNzZzJ89Onkk+AsFJ2H8xGdKTg0vj0Ag== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Now nobody is using damon_set_region_biggest_system_ram_default(). Remove it. Signed-off-by: SeongJae Park --- include/linux/damon.h | 5 ---- mm/damon/core.c | 64 ------------------------------------------- 2 files changed, 69 deletions(-) diff --git a/include/linux/damon.h b/include/linux/damon.h index f656908b2d389..c7a31572689be 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -1015,11 +1015,6 @@ int damon_set_region_system_rams_default(struct damon_target *t, unsigned long addr_unit, unsigned long min_region_sz); -int damon_set_region_biggest_system_ram_default(struct damon_target *t, - unsigned long *start, unsigned long *end, - unsigned long addr_unit, - unsigned long min_region_sz); - #endif /* CONFIG_DAMON */ #endif /* _DAMON_H */ diff --git a/mm/damon/core.c b/mm/damon/core.c index 980a31cd3498e..9f38deddcb30e 100644 --- a/mm/damon/core.c +++ b/mm/damon/core.c @@ -3408,70 +3408,6 @@ int damon_set_region_system_rams_default(struct damon_target *t, return damon_set_regions(t, &addr_range, 1, min_region_sz); } -static int walk_system_ram(struct resource *res, void *arg) -{ - struct resource *a = arg; - - if (resource_size(a) < resource_size(res)) { - a->start = res->start; - a->end = res->end; - } - return 0; -} - -/* - * Find biggest 'System RAM' resource and store its start and end address in - * @start and @end, respectively. If no System RAM is found, returns false. - */ -static bool damon_find_biggest_system_ram(unsigned long *start, - unsigned long *end, unsigned long addr_unit) - -{ - struct resource res = {}; - - walk_system_ram_res(0, -1, &res, walk_system_ram); - *start = damon_res_to_core_addr(res.start, addr_unit); - *end = damon_res_to_core_addr(res.end + 1, addr_unit); - if (*end <= *start) - return false; - return true; -} - -/** - * damon_set_region_biggest_system_ram_default() - Set the region of the given - * monitoring target as requested, or biggest 'System RAM'. - * @t: The monitoring target to set the region. - * @start: The pointer to the start address of the region. - * @end: The pointer to the end address of the region. - * @addr_unit: The address unit for the damon_ctx of @t. - * @min_region_sz: Minimum region size. - * - * This function sets the region of @t as requested by @start and @end. If the - * values of @start and @end are zero, however, this function finds the biggest - * 'System RAM' resource and sets the region to cover the resource. In the - * latter case, this function saves the start and end addresses of the resource - * in @start and @end, respectively. - * - * Return: 0 on success, negative error code otherwise. - */ -int damon_set_region_biggest_system_ram_default(struct damon_target *t, - unsigned long *start, unsigned long *end, - unsigned long addr_unit, unsigned long min_region_sz) -{ - struct damon_addr_range addr_range; - - if (*start > *end) - return -EINVAL; - - if (!*start && !*end && - !damon_find_biggest_system_ram(start, end, addr_unit)) - return -EINVAL; - - addr_range.start = *start; - addr_range.end = *end; - return damon_set_regions(t, &addr_range, 1, min_region_sz); -} - /* * damon_moving_sum() - Calculate an inferred moving sum value. * @mvsum: Inferred sum of the last @len_window values. -- 2.47.3